GB2186594A - Steel alloys - Google Patents
Steel alloys Download PDFInfo
- Publication number
- GB2186594A GB2186594A GB08700647A GB8700647A GB2186594A GB 2186594 A GB2186594 A GB 2186594A GB 08700647 A GB08700647 A GB 08700647A GB 8700647 A GB8700647 A GB 8700647A GB 2186594 A GB2186594 A GB 2186594A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alloy
- boron
- sulphur
- carbon
- chromium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000851 Alloy steel Inorganic materials 0.000 title description 3
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 27
- 239000000956 alloy Substances 0.000 claims abstract description 27
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000005864 Sulphur Substances 0.000 claims abstract description 15
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052796 boron Inorganic materials 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004411 aluminium Substances 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 13
- 239000011651 chromium Substances 0.000 claims abstract description 13
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 12
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 12
- 239000011733 molybdenum Substances 0.000 claims abstract description 12
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 12
- 239000010955 niobium Substances 0.000 claims abstract description 12
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 12
- 239000011574 phosphorus Substances 0.000 claims abstract description 12
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 12
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 239000011572 manganese Substances 0.000 claims abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 239000010936 titanium Substances 0.000 claims abstract description 11
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 11
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims abstract description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 238000005242 forging Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005275 alloying Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
A low carbon steel alloy particularly but not exclusively for making forged tubular elements such as oilfield pipe connectors comprises (by weight): carbon 0.05 - 0.25% silicon 0.01 - 0.35% manganese 1.15 - 0.65% phosphorus up to - 0.015% sulphur up to - 0.015% chromium 0.15 - 0.75% molybdenum 0.30 - 0.65% nickel 0.15 - 0.75% copper 0.10 - 0.50% vanadium 0.015 - 0.10 niobium 0.015 - 0.10% boron 0.0005 - 0.005% titanium 0.001 - 0.05% zirconium 0.001 - 0.05% aluminium 0.04 - 0.15% nitrogen 0.001 - 0.15% the balance being iron and unavoidable impurities.
Description
SPECIFICATION
Steel alloys
This invention is concerned with low carbon steel alloys which are suitable for use, inter alia, for forgings and roll forged tubular elements used in the manufacture of tubular metal components, such as oilfield connectors.
Particularly demanding requirements are placed on materials for such uses; suitable steels should have a combination of very high yield strength, high notch ductility at sub-zero temperatures, particularly in heavy wall thicknesses, be weldable and machinable, but yet be economical to manufacture.
Forged alloy steels having relatively high carbon, nickel, chromium and molybdenum contents (up to 0.45%, 1.8%, 1.1% and 0.35% respectively) are conventionally employed for such uses.
Such steels have high yield strength, but are expensive to manufacture and have relatively poor notch ductility, particularly at sub-zero temperatures, and poor weldability.
We have now developed a range of steel alloys which largely overcome the limitations of such conventional alloys. The alloys of the present invention make use of other alloying elements, particularly manganese, vanadium, niobium, zirconium, boron and copper, to replace the greater proportion of the nickel and chromium in the conventional steels, have reduced carbon, phosphorus and sulphur contents, and may be calcium treated. The resulting alloys have high yield strength, greatly improved sub-zero notch ductility and weldability, and excellent machining properties.
According to the present invention, there is provided a low carbon steel alloy, which comprises (by weight): carbon 0.05 - 0.25% silicon 0.01 - 0.35% manganese 1.15 - 1.65% phosphorus up to 0.015% sulphur up to 0.015% chromium 0.15 - 0.75% molybdenum 0.30 - 0.65% nickel 0.15 - 0.75% copper 0.10 - 0.50% vanadium 0.015 - 0.10% niobium 0.015 - 0.10% boron 0.0005 - 0.005% titanium 0.001 - 0.05% zirconium 0.001 - 0.10% aluminium 0.04 - 0.15% nitrogen 0.001 - 0.15% the balance being iron and unavoidable impurities.
The alloy may, depending on the sulphur content, be calcium treated during production.
It has been found that the preferred composition of the alloy for use in manufacturing forged tubular elements, such as pipes and pipe connectors, is dependent on the wall thickness of the forging.
In the manufacture of forgings having a wall thickness of up to 60 mm, it is preferred that the alloy comprises (by weight): carbon 0.10 - 0.20% silicon 0.15 - 0.35% manganese 1.15 - 1.45% phosphorus up to 0.015% sulphur up to 0.015% chromium 0.15 - 0.50% molybdenum 0.30 - 0.55% nickel 0.15 - 0.50% copper 0.10 - 0.50% vanadium 0.015 - 0.035% niobium 0.015 - 0.035% boron 0.002 - 0.005% titanium 0.001 - 0.05% zirconium 0.001 - 0.05% aluminium 0.085 - 0.12% nitrogen 0.001 - 0.010% the balance being iron and unavoidable impurities.
To further improve the weldability of the alloy for forgings which are required to be welded and have a wall thickness up to 60 mm, the boron and aluminium contents are advantageously adjusted to provide an alloy comprising (by weight): carbon 0.10 - 0.20% silicon 0.15 - 0.35% manganese 1.15 - 1.45% phosphorus up to 0.015% sulphur up to 0.015% chromium 0.15 - 0.50% molybdenum 0.30 - 0.55% nickel 0.15 - 0.50% copper 0.10 - 0.50% vanadium 0.015 - 0.035% niobium 0.015 - 0.035% boron 0.0005 - 0.002% titanium 0.001 - 0.05% zirconium 0.001 - 0.05% aluminium 0.04 - 0.06% nitrogen 0.001 - 0.010% the balance being iron and unavoidable impurities.
For forgings having a wall thickness of greater than 60 mm, it is preferred that the alloy comprises (by weight): carbon 0.15 - 0.25% silicon 0.15 - 0.35% manganese 1.25 - 1.55% phosphorus up to 0.015% sulphur up to 0.015% chromium 0.15 - 0.75% molybdenum 0.30 - 0.65% nickel 0.15 - 0.75% copper 0.10 - 0.50% vanadium 0.015 - 0.035% niobium 0.015 - 0.035% boron 0.002 - 0.005% titanium 0.001 - 0.05% zirconium 0.001 - 0.10% aluminium 0.085 - 0.12% nitrogen 0.001 - 0.010% the balance being iron and unavoidable impurities.
To further improve the weldability of the alloy for forgings which are required to be welded and have a wall thickness greater than 60 mm, the boron and aluminium contents are advantageously adjusted to provide an alloy comprising (by weight): carbon 0.15 - 0.25% silicon 0.15 - 0.35% manganese 1.25 - 1.55% phosphorus up to 0.015% sulphur up to 0.015% chromium 0.15 - 0.75% molybdenum 0.30 - 0.65% nickel 0.15 - 0.75% copper 0.10 - 0.50% vanadium 0.015 - 0.035% niobium 0.015 - 0.035% boron 0.0005 - 0.002% titanium 0.001 - 0.05% zirconium 0.001 - 0.10% aluminium 0.04 - 0.06% nitrogen 0.001 - 0.010% the balance being iron and unavoidable impurities.
The alloys of the present invention are fully killed, fine grained, may, depending on the sulphur content, be calcium treated, and have a low sulphur content. They can be produced by any of the more modern steel making processes and may be forged from ingot or from continuously cast stock. Depending on the range and specific mechanical properties required, the alloys may, after forging, be normalised or quenched with oil or water and then tempered, preferably at a temperature above 600 C.
When forged, quenched, and tempered, the mechanical properties of the alloys both before and after welding are typically as follows: yield strength (0.2% PS) - not less than
700 N/mm2 ultimate tensile strength - not less than
860 n/mm2 % elongation - not less than 15 % reduction in area - not less than 40 impact strength (Kv, and KV1) at-55C - not less than 27
joules.
The alloys have good weldability and excellent machinability.
By way of specific example, typical values for a steel having mechanical properties which fall within the ranges given above are as follows: yield strength (0.2% PS) - 871 N/mm2 ultimate tensile strength - 914 N/mm2 % elongation 22 22 % reduction in area - 64
Charpy Vee notch impact value at- 55"C
K - 71 78 )joules 66 Kvi - 71 64 )joules 70
Claims (7)
1. A low carbon steel alloy comprising (by weight): carbon 0.05 - 0.25% silicon 0.01 - 0.35% manganese 1.15 - 1.65% phosphorus up to 0.015% sulphur up to 0.015% chromium 0.15 - 0.75% molybdenum 0.30 - 0.65% nickel 0.15 - 0.75% copper 0.10 - 0.50% vanadium 0.015 - 0.10% niobium 0.015 - 0.10% boron 0.0005 - 0.005% titanium 0.001 - 0.05% zirconium 0.001 - 0.10% aluminium 0.04 - 0.15% nitrogen 0.001 - 0.15% the balance being iron and unavoidable impurities.
2. An alloy as claimed in claim 1, wherein the alloy is calcium treated.
3. A forged tubular element made from an alloy as claimed in either claim 1 or claim 2.
4. A tubular element having a wall thickness of up to 60 mm made from an alloy which comprises (by weight): carbon 0.10 - 0.20% silicon 0.15 - 0.35% manganese 1.15 - 1.45% phosphorus up to 0.015% sulphur up to 0.015% chromium 0.15 - 0.50% molybdenum 0.30 - 0.55% nickel 0.15 - 0.50% copper 0.10 - 0.50% vanadium 0.015 - 0.035% niobium 0.015 - 0.035% boron 0.002 - 0.005% titanium 0.001 - 0.05% zirconium 0.001 - 0.05% aluminium 0.085 - 0.12% nitrogen 0.001 - 0.010% the balance being iron and unavoidable impurities.
5. A tubular element having a wall thickness of up to 60 mm made from an alloy which comprises (by weight): carbon 0.10 - 0.20% silicon 0.15 - 0.35% manganese 1.15 - 1.45% phosphorus up to 0.015% sulphur up to 0.015% chromium 0.15 - 0.50% molybdenum 0.30 - 0.55% nickel 0.15 - 0.50% copper 0.10 - 0.50% vanadium 0.015 - 0.035% niobium 0.015 - 0.035% boron 0.0005 - 0.002% titanium 0.001 - 0.05% zirconium 0.001 - 0.05% aluminium 0.04 - 0.06% nitrogen 0.001 - 0.010% the balance being iron and unavoidable impurities.
6. A tubular element having a wall thickness greater than 60 mm made from an alloy which comprises (by weight): carbon 0.15 - 0.25% silicon 0.15 - 0.35% manganese 1.25 - 1.55% phosphorus up to 0.015% sulphur up to 0.015% chromium 0.15 - 0.75% molybdenum 0.30 - 0.65% nickel 0.15 - 0.75% copper 0.10 - 0.50% vanadium 0.015 - 0.035 niobium 0.015 - 0.035% boron 0.002 - 0.005% titanium 0.001 - 0.05% zirconium 0.001 - 0.10% aluminium 0.085 - 0.12% nitrogen 0.001 - 0.010% the balance being iron and unavoidable impurities.
7. A tubular element having a wall thickness greater than 60 mm made from an alloy which comprises (by weight): carbon 0.15 - 0.25% silicon 0.15 - 0.35% manganese 1.25 - 1.55% phosphorus up to 0.015% sulphur up to 0.0150 chromium 0.15 - 0.75% molybdenum 0.30 - 0.65% nickel 0.15 - 0.75% copper 0.10 - 0.50% vanadium 0.015 - 0.035% niobium 0.015 - 0.035% boron 0.0005 - 0.002% titanium 0.001 - 0.05% zirconium 0.001 - 0.10% aluminium 0.04 - 0.06to nitrogen 0.001 - 0.010% the balance being iron and unavoidable impurities.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB868603500A GB8603500D0 (en) | 1986-02-13 | 1986-02-13 | Steel alloys |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8700647D0 GB8700647D0 (en) | 1987-02-18 |
| GB2186594A true GB2186594A (en) | 1987-08-19 |
| GB2186594B GB2186594B (en) | 1989-11-08 |
Family
ID=10592963
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB868603500A Pending GB8603500D0 (en) | 1986-02-13 | 1986-02-13 | Steel alloys |
| GB8700647A Expired GB2186594B (en) | 1986-02-13 | 1987-01-13 | Steel alloys |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB868603500A Pending GB8603500D0 (en) | 1986-02-13 | 1986-02-13 | Steel alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB8603500D0 (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0460591A1 (en) * | 1990-06-05 | 1991-12-11 | The Ferrous Wheel Group, Inc. | High performance high strength low alloy steel |
| WO1993016208A1 (en) * | 1992-02-14 | 1993-08-19 | Nauchno-Proizvodstvennoe Predpriyatie 'salma' | Cold-resistant cast steel |
| EP0709481A1 (en) * | 1994-10-31 | 1996-05-01 | CREUSOT LOIRE INDUSTRIE (Société Anonyme) | Low alloy steel for the manufacture of moulds for plastic materials or for rubber articles |
| EP0775756A1 (en) * | 1995-11-27 | 1997-05-28 | ASCOMETAL (Société anonyme) | Steel for the production of forgings with bainitic structure, and production process of forged parts |
| FR2748037A1 (en) * | 1996-04-29 | 1997-10-31 | Creusot Loire | WELD REPAIRABLE STEEL FOR THE MANUFACTURING OF MOLDS FOR PLASTIC MATERIALS |
| FR2756298A1 (en) * | 1996-11-26 | 1998-05-29 | Ascometal Sa | STEEL AND PROCESS FOR THE MANUFACTURE OF A MECHANICAL PART HAVING A BATH STRUCTURE |
| EP0851038A1 (en) * | 1996-12-31 | 1998-07-01 | Ascometal | Steel and process for forming a steel article by cold plastic working |
| EP1081245A1 (en) * | 1999-08-31 | 2001-03-07 | Sumitomo Metal Industries, Ltd. | Heat resistant Cr-Mo alloy steel |
| RU2217520C2 (en) * | 2002-02-08 | 2003-11-27 | Открытое акционерное общество специального машиностроения и металлургии "Мотовилихинские заводы" | Steel |
| FR2847592A1 (en) * | 2002-11-27 | 2004-05-28 | Ispat Unimetal | Steel for the fabrication of high performance precision mechanical components by either hot or cold deformation processes, has a bainitic structure |
| RU2243288C1 (en) * | 2003-12-03 | 2004-12-27 | Открытое акционерное общество "Северсталь" | Steel |
| RU2249625C1 (en) * | 2003-12-26 | 2005-04-10 | Общество с ограниченной ответственностью "Интелмет НТ" | Round-profiled rolled iron from low-alloyed steel for cold die forging of high-strength fastening members |
| GB2412178B (en) * | 2002-09-20 | 2007-05-02 | Enventure Global Technology | Pipe formability evaluation for expandable tubulars |
| FR2931166A1 (en) * | 2008-05-15 | 2009-11-20 | Arcelormittal Gandrange Sa | HOT FORGED STEEL WITH HIGH MECHANICAL CHARACTERISTICS OF THE PARTS PRODUCED |
| RU2414521C1 (en) * | 2009-10-06 | 2011-03-20 | Общество с ограниченной ответственностью "Самарский инженерно-технический центр" | Corrosion resistant steel for flow and casing strings |
| CN102071367A (en) * | 2010-11-24 | 2011-05-25 | 南京迪威尔重型锻造股份有限公司 | Steel forging manufacturing process for deep-sea Christmas tree equipment connectors |
| CN102181793A (en) * | 2011-04-02 | 2011-09-14 | 南京迪威尔重型锻造股份有限公司 | Process for manufacturing steel forge piece of vertical conveying pipe of deep sea oil extraction equipment |
| CN102312173A (en) * | 2010-06-29 | 2012-01-11 | 鞍钢股份有限公司 | Steel for large heat input welded structure with tensile strength of 700MPa and its manufacturing method |
| DE10143073B4 (en) | 2000-09-01 | 2022-06-09 | Nippon Steel & Sumitomo Metal Corporation | Low carbon steel and method of making structural steel tube with high cold temperature toughness |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104357752B (en) * | 2014-10-21 | 2016-11-23 | 盐城奥克阀门有限公司 | A kind of alloy material for valve casting and process technique thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1034859A (en) * | 1963-03-02 | 1966-07-06 | Ishikawajima Harima Heavy Ind | Alloy |
| GB1083466A (en) * | 1963-12-05 | 1967-09-13 | Ishikawajima Harima Heavy Ind | Method of manufacturing steel with improved mechanical properties |
| GB1473934A (en) * | 1973-07-31 | 1977-05-18 | Nippon Steel Corp | Steel making |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2155035B (en) * | 1984-02-29 | 1988-07-27 | Skf Steel Eng Ab | Steel ring |
-
1986
- 1986-02-13 GB GB868603500A patent/GB8603500D0/en active Pending
-
1987
- 1987-01-13 GB GB8700647A patent/GB2186594B/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1034859A (en) * | 1963-03-02 | 1966-07-06 | Ishikawajima Harima Heavy Ind | Alloy |
| GB1083466A (en) * | 1963-12-05 | 1967-09-13 | Ishikawajima Harima Heavy Ind | Method of manufacturing steel with improved mechanical properties |
| GB1473934A (en) * | 1973-07-31 | 1977-05-18 | Nippon Steel Corp | Steel making |
Cited By (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0460591A1 (en) * | 1990-06-05 | 1991-12-11 | The Ferrous Wheel Group, Inc. | High performance high strength low alloy steel |
| WO1993016208A1 (en) * | 1992-02-14 | 1993-08-19 | Nauchno-Proizvodstvennoe Predpriyatie 'salma' | Cold-resistant cast steel |
| EP0709481A1 (en) * | 1994-10-31 | 1996-05-01 | CREUSOT LOIRE INDUSTRIE (Société Anonyme) | Low alloy steel for the manufacture of moulds for plastic materials or for rubber articles |
| FR2726287A1 (en) * | 1994-10-31 | 1996-05-03 | Creusot Loire | LOW-ALLOY STEEL FOR THE MANUFACTURE OF MOLDS FOR PLASTICS OR RUBBER |
| US5645794A (en) * | 1994-10-31 | 1997-07-08 | Creusot Loire Inudstrie | Low alloy steel for the manufacture of molds for plastics and for rubber |
| US5762725A (en) * | 1995-11-27 | 1998-06-09 | Ascometal | Steel for the manufacture of forging having a bainitic structure and process for manufacturing a forging |
| EP0775756A1 (en) * | 1995-11-27 | 1997-05-28 | ASCOMETAL (Société anonyme) | Steel for the production of forgings with bainitic structure, and production process of forged parts |
| FR2741632A1 (en) * | 1995-11-27 | 1997-05-30 | Ascometal Sa | STEEL FOR MANUFACTURING A FORGED PIECE HAVING A BAINITIQUE STRUCTURE AND METHOD FOR MANUFACTURING A PIECE |
| EP0805221A1 (en) * | 1996-04-29 | 1997-11-05 | CREUSOT LOIRE INDUSTRIE (Société Anonyme) | Steel, repairable by welding, for the manufacture of moulds for the plastics industry |
| US5855846A (en) * | 1996-04-29 | 1999-01-05 | Creusot Loire Industrie | Steel repairable by welding for the manufacture of molds for plastics |
| FR2748037A1 (en) * | 1996-04-29 | 1997-10-31 | Creusot Loire | WELD REPAIRABLE STEEL FOR THE MANUFACTURING OF MOLDS FOR PLASTIC MATERIALS |
| CN1073642C (en) * | 1996-04-29 | 2001-10-24 | 克罗索·洛利工业责任有限公司 | Steel repairable by welding for manufacture of moulds for plastics |
| FR2756298A1 (en) * | 1996-11-26 | 1998-05-29 | Ascometal Sa | STEEL AND PROCESS FOR THE MANUFACTURE OF A MECHANICAL PART HAVING A BATH STRUCTURE |
| EP0845544A1 (en) * | 1996-11-26 | 1998-06-03 | Ascometal | Steel product made from bainitic steel and process for making the steel product |
| RU2201468C2 (en) * | 1996-12-31 | 2003-03-27 | Аскометаль | Steel for manufacture of part by cold plastic deformation and method of manufacture of such part |
| EP0851038A1 (en) * | 1996-12-31 | 1998-07-01 | Ascometal | Steel and process for forming a steel article by cold plastic working |
| FR2757877A1 (en) * | 1996-12-31 | 1998-07-03 | Ascometal Sa | STEEL AND PROCESS FOR THE MANUFACTURE OF A STEEL PART SHAPED BY COLD PLASTIC DEFORMATION |
| US5919415A (en) * | 1996-12-31 | 1999-07-06 | Ascometal | Steel and process for the manufacture of a steel component formed by cold plastic deformation |
| EP1081245A1 (en) * | 1999-08-31 | 2001-03-07 | Sumitomo Metal Industries, Ltd. | Heat resistant Cr-Mo alloy steel |
| US6358336B1 (en) | 1999-08-31 | 2002-03-19 | Sumitomo Metal Industries, Ltd. | Heat resistance Cr-Mo alloy steel |
| DE10143073B4 (en) | 2000-09-01 | 2022-06-09 | Nippon Steel & Sumitomo Metal Corporation | Low carbon steel and method of making structural steel tube with high cold temperature toughness |
| RU2217520C2 (en) * | 2002-02-08 | 2003-11-27 | Открытое акционерное общество специального машиностроения и металлургии "Мотовилихинские заводы" | Steel |
| GB2412178B (en) * | 2002-09-20 | 2007-05-02 | Enventure Global Technology | Pipe formability evaluation for expandable tubulars |
| FR2847592A1 (en) * | 2002-11-27 | 2004-05-28 | Ispat Unimetal | Steel for the fabrication of high performance precision mechanical components by either hot or cold deformation processes, has a bainitic structure |
| WO2004050935A1 (en) * | 2002-11-27 | 2004-06-17 | Mittal Steel Gandrange | Ready-use low-carbon steel mechanical component for plastic deformation and method for making same |
| RU2243288C1 (en) * | 2003-12-03 | 2004-12-27 | Открытое акционерное общество "Северсталь" | Steel |
| RU2249625C1 (en) * | 2003-12-26 | 2005-04-10 | Общество с ограниченной ответственностью "Интелмет НТ" | Round-profiled rolled iron from low-alloyed steel for cold die forging of high-strength fastening members |
| WO2009138586A3 (en) * | 2008-05-15 | 2010-01-07 | Arcelormittal Gandrange | Micro-alloyed steel for hot forging parts having high mechanical characteristics |
| FR2931166A1 (en) * | 2008-05-15 | 2009-11-20 | Arcelormittal Gandrange Sa | HOT FORGED STEEL WITH HIGH MECHANICAL CHARACTERISTICS OF THE PARTS PRODUCED |
| RU2414521C1 (en) * | 2009-10-06 | 2011-03-20 | Общество с ограниченной ответственностью "Самарский инженерно-технический центр" | Corrosion resistant steel for flow and casing strings |
| CN102312173A (en) * | 2010-06-29 | 2012-01-11 | 鞍钢股份有限公司 | Steel for large heat input welded structure with tensile strength of 700MPa and its manufacturing method |
| CN102071367A (en) * | 2010-11-24 | 2011-05-25 | 南京迪威尔重型锻造股份有限公司 | Steel forging manufacturing process for deep-sea Christmas tree equipment connectors |
| CN102071367B (en) * | 2010-11-24 | 2012-04-04 | 南京迪威尔重型锻造股份有限公司 | Steel forging manufacturing process for deep-sea Christmas tree equipment connectors |
| CN102181793A (en) * | 2011-04-02 | 2011-09-14 | 南京迪威尔重型锻造股份有限公司 | Process for manufacturing steel forge piece of vertical conveying pipe of deep sea oil extraction equipment |
| CN102181793B (en) * | 2011-04-02 | 2012-05-30 | 南京迪威尔重型锻造股份有限公司 | Process for manufacturing steel forge piece of vertical conveying pipe of deep sea oil extraction equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2186594B (en) | 1989-11-08 |
| GB8700647D0 (en) | 1987-02-18 |
| GB8603500D0 (en) | 1986-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2186594A (en) | Steel alloys | |
| US3254991A (en) | Steel alloy and method of making same | |
| JPS6411105B2 (en) | ||
| US6743305B2 (en) | High-strength high-toughness precipitation-hardened steel | |
| US3110798A (en) | Submerged arc weld metal composition | |
| US2532117A (en) | Nickel steel alloys | |
| US3658513A (en) | Precipitation-hardenable stainless steel | |
| EP0183536B1 (en) | Non-magnetic steel having high corrosion resistance and high strength for use as material of drill collar, and drill collar made of the steel | |
| US6299833B1 (en) | Steel composition | |
| US3554734A (en) | Steel alloy containing low chromium and copper | |
| US4643767A (en) | Nuclear grade steels | |
| EP0816523B1 (en) | Low-Cr ferritic steels and low-Cr ferritic cast steels having excellent high-temperature strength and weldability | |
| US3928088A (en) | Ferritic stainless steel | |
| US5030297A (en) | Process for the manufacture of seamless pressure vessels and its named product | |
| KR900000688B1 (en) | High strength stainless steel with excellent intergranular corrosion cracking and workability | |
| GB2166158A (en) | Steel alloys | |
| US3719476A (en) | Precipitation-hardenable stainless steel | |
| JP3572152B2 (en) | Low Cr ferritic cast steel with excellent high temperature strength and weldability | |
| SU1759944A1 (en) | Structural steel | |
| US7662246B2 (en) | Steel for components of chemical installations | |
| US3373015A (en) | Stainless steel and product | |
| US4022586A (en) | Austenitic chromium-nickel-copper stainless steel and articles | |
| US3676108A (en) | Low carbon high yield strength alloy steel | |
| JPH05179378A (en) | Ni-based alloy with excellent room temperature and high temperature strength | |
| SU863707A1 (en) | Steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19970113 |