[go: up one dir, main page]

US1375255A - Steel - Google Patents

Steel Download PDF

Info

Publication number
US1375255A
US1375255A US254693A US25469318A US1375255A US 1375255 A US1375255 A US 1375255A US 254693 A US254693 A US 254693A US 25469318 A US25469318 A US 25469318A US 1375255 A US1375255 A US 1375255A
Authority
US
United States
Prior art keywords
steel
per cent
metals
composition
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.)
Expired - Lifetime
Application number
US254693A
Inventor
Macgregor Peter
Balfour Arthur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US254693A priority Critical patent/US1375255A/en
Application granted granted Critical
Publication of US1375255A publication Critical patent/US1375255A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/60Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur

Definitions

  • PETER MAGGREGOR of Atterclifi'e Forge and Rolling Mills, Sheffield, England, manufacturer
  • ARTHUR BALFOUR of Dannemora Steel Works, Sheffield, England, steel manufacturer
  • This invention relates to the manufacture of steel and has for its object to provide a steel composition particularly suitable for making, cutting and milling tools, and as a substitute forhigh speed steel.
  • a steel made in accordance with our invention may therefore be defined as containing from 1 to/7% per cent. of nickel, from Specification of Letters Patent.
  • a sample of the new and improved steel made in accordance with our invention has the following approximate composition.
  • An improved steel suitable for cutting and milling tools and as a substitute for high speed steel containing from 1 to 6 per cent. of nickel, from 1 to 3.5 per cent. of carbon, from 7% to 20 per cent. of chromium, and from 0.25 to 1 per cent. of manganese.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Description

UNITED STATES PATENT OFFICE.
STEEL.
No Drawing.
To all whomit may concern:
Be it known that we, PETER MAGGREGOR, of Atterclifi'e Forge and Rolling Mills, Sheffield, England, manufacturer, and ARTHUR BALFOUR, of Dannemora Steel Works, Sheffield, England, steel manufacturer, have invented a certain new and Improved Steel, of which the following is a specification.
This invention relates to the manufacture of steel and has for its object to provide a steel composition particularly suitable for making, cutting and milling tools, and as a substitute forhigh speed steel.
Heretofore, it has been proposed to manufacture self hardening steel alloys and steel suitable for the manu acture of armor plates, projectiles, and the like articles requiring ve great toughness, containing 1 per cent. or l ess of carbon together with nickel and a. comparatively low percentage of chromium, for instance 5 per cent. or less.
The percentage composition of these chrome-nickel steels has varied considerably according to the purpose for which the steel was required, but we have not found any heretofore known composition of chromenickel steel altogether suitable for our purpose referred to above. We have therefore made an original investigation of this subject de 91.0020 and have methodically carried out a series of experiments with various compositions and grades of steel, in order to determine, within definable limits, a composition which imparts the desirable qualities to cutting and milling tools, and can be used with advantage as a substitute for high speed steel.
As a result of our investigation and experiments we have found that a chrome-carbon steel containing comparatively high percentages of carbon and chromium, from 1 to 6 per cent of nickel, and a small amount of manganese is the best suited for the said purpose.
A steel made in accordance with our invention may therefore be defined as containing from 1 to/7% per cent. of nickel, from Specification of Letters Patent.
Patented Apr. 19, 1921.
Application filed September 18, 1918. Serial No. 254,888.
1 to 3.5 per cent. of carbon, cent. of chromium, of manganese.
A sample of the new and improved steel made in accordance with our invention has the following approximate composition.
from 6 to 20 per and a small percentage Small quantities of one or more of the following metals, viz., tantalum, molybdenum, tungsten, vanadium, zirconium and uranium, may be added to the ingredients used in making our improved steel. For the purposes of this steel these metals are substantially equivalent. Another suitable metal is cobalt. As no generic term including these several metals is known, we will designate them rarer non-ferrous metals, which term will be understood as covering the metals thus specified, which have in common the quality of alloying with the described nickel-chromium-manganese highspeed steel to vary but not diminish its stated properties. For instance, anything up to about 2 per cent. of any of the above metals may be added, except that in the case of cobalt, we prefer to use only about 0.9 per cent. or less.
What we claim and desire to secure by Letters Patent is 1. An improved steel suitable for cutting and milling tools and as a substitute for high speed steel, containing from 1 to 6 per cent. of nickel, from 1 to 3.5 per cent. of carbon, from 7% to 20 per cent. of chromium, and from 0.25 to 1 per cent. of manganese.
2. A steel of the composition of claim 1 plus not over about 2 per cent. of one of the. specified rarer non-ferrous metals.
3. An improved steel for the purposes set forth containing approximately, carbon, 1.45 5 per cent., silicon, 0.40 per cent., manganese,
0.25 per cent., sulfur, 0.03 pet cent., phosphorus, 0.03 er cent, chromium, 12.50 per cent., and nic e1, 3.50 per cent 4. A steel of the composition of claim 3 plus not over about 2 per cent. of one of 10 the specified rarer non-ferrous metals.
In testimony whereof we have signed our names to this specification.
PETER MACGREGOR. ARTHUR BALFOUR.
US254693A 1918-09-18 1918-09-18 Steel Expired - Lifetime US1375255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US254693A US1375255A (en) 1918-09-18 1918-09-18 Steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US254693A US1375255A (en) 1918-09-18 1918-09-18 Steel

Publications (1)

Publication Number Publication Date
US1375255A true US1375255A (en) 1921-04-19

Family

ID=22965212

Family Applications (1)

Application Number Title Priority Date Filing Date
US254693A Expired - Lifetime US1375255A (en) 1918-09-18 1918-09-18 Steel

Country Status (1)

Country Link
US (1) US1375255A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576782A (en) * 1948-08-31 1951-11-27 Nat Tube Co Method of making hot mill tools
US9458743B2 (en) 2013-07-31 2016-10-04 L.E. Jones Company Iron-based alloys and methods of making and use thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576782A (en) * 1948-08-31 1951-11-27 Nat Tube Co Method of making hot mill tools
US9458743B2 (en) 2013-07-31 2016-10-04 L.E. Jones Company Iron-based alloys and methods of making and use thereof
US10138766B2 (en) 2013-07-31 2018-11-27 L.E. Jones Company Iron-based alloys and methods of making and use thereof

Similar Documents

Publication Publication Date Title
US3615365A (en) Austenitic stainless steel
US1375255A (en) Steel
US2289449A (en) Die steel for hot working
US2413602A (en) Bearing steels
US1391215A (en) High-carbon steel-iron alloy
US2147119A (en) Alloy compositions
US1998957A (en) Ferrous alloy
US2708159A (en) Heat treated, hardened alloy steel elements
US2575217A (en) Ferrous alloys and abrasive-resistant articles made therefrom
US3163525A (en) Ferrous alloys and articles made therefrom
US2339357A (en) Tool alloy
US2297687A (en) Alloy and cutting tool
US1998953A (en) Ferrous alloy
US2598714A (en) Machinable high cobalt low carbon alloys for die-casting molds
US1593924A (en) Alloy steel
US1955529A (en) High speed steel
JP3416868B2 (en) High-strength, low-ductility non-heat treated steel with excellent machinability
US1211826A (en) Iron alloy.
US3518080A (en) High-strength weldable constructional steel with high manganese
US2908565A (en) High temperature alloy
US2301082A (en) Tool alloy
US1233862A (en) A cobpobation ob
US2102283A (en) Alloy steel
US2198476A (en) Alloy compositions and articles made therefrom
US1358831A (en) Case-harbenxhg steel