US1968966A - High speed steel - Google Patents
High speed steel Download PDFInfo
- Publication number
- US1968966A US1968966A US556325A US55632531A US1968966A US 1968966 A US1968966 A US 1968966A US 556325 A US556325 A US 556325A US 55632531 A US55632531 A US 55632531A US 1968966 A US1968966 A US 1968966A
- Authority
- US
- United States
- Prior art keywords
- high speed
- speed steel
- steel
- beryllium
- tungsten
- 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
Links
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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
Definitions
- Standard high-speed steels of today consist of ironalloys with carbon varying from 0.2% to 0.7%, tungsten, from about 12% to 22% (with whole 'or partial replacement by molybdenum, a weight unit of tungsten being replaceable by half a weight unit of molybdenum), chromium up to 7% and, .optionally, a vanadium content up to 2%.
- These are in addition to the usual steel constituents and contaminants-silicon, manganese, sulphur, etc.-
- high-speed steel, as used in this application is to be considered as representing compositions included in the analyses, above, and is to be so under stood in the claim.
- I -claini1'- A high speed steel comprising carbon from about 0.2% to about 0.7%, tungsten from about 12% to 22%, chromium from a substantial irac- 70 tion of,1% up to about 7%, beryllium from about 0.2% to about 5%, and the balance iron with J. KENT SW.
Description
Patented Aug. 7, 1934 PATENT OFFICE messes HIGH SPEED STEEL Joseph Kent Smith, Detroit, Mich assign" a The Beryllium Corporation, New York, N. Y a corporation of Delaware No Drawing. Application August 10, 1931-. Serial No. 556,325
1 Claim. (01. 75-1 This invention relates to a series of compositions of steel, classifiable as "high-speed steel", and characterized by the presence, among other alloying elements, of metallic beryllium.
Standard high-speed steels of today consist of ironalloys with carbon varying from 0.2% to 0.7%, tungsten, from about 12% to 22% (with whole 'or partial replacement by molybdenum, a weight unit of tungsten being replaceable by half a weight unit of molybdenum), chromium up to 7% and, .optionally, a vanadium content up to 2%. These are in addition to the usual steel constituents and contaminants-silicon, manganese, sulphur, etc.- The term high-speed steel, as used in this application, is to be considered as representing compositions included in the analyses, above, and is to be so under stood in the claim. Y
its common contaminants.
I have found that the addition-of beryllium, in quantities'not more than 5% of the total, and over 0.2% is of great benefit to high speed steels of this type. Particularly valuable is the increasing of the red hardness of the steelwhich the beryllium confers. Because of this greater hardness', the life of the steel is materially increased under operating conditions, and, as a corollary, greater cutting power is conferred upon tools made from steel'of such composition.
I -claini1'- A high speed steel comprising carbon from about 0.2% to about 0.7%, tungsten from about 12% to 22%, chromium from a substantial irac- 70 tion of,1% up to about 7%, beryllium from about 0.2% to about 5%, and the balance iron with J. KENT SW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US556325A US1968966A (en) | 1931-08-10 | 1931-08-10 | High speed steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US556325A US1968966A (en) | 1931-08-10 | 1931-08-10 | High speed steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1968966A true US1968966A (en) | 1934-08-07 |
Family
ID=24220862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US556325A Expired - Lifetime US1968966A (en) | 1931-08-10 | 1931-08-10 | High speed steel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1968966A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3425392A (en) * | 1966-05-25 | 1969-02-04 | Ames Co B C | Shock protected needle mount for gauges |
-
1931
- 1931-08-10 US US556325A patent/US1968966A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3425392A (en) * | 1966-05-25 | 1969-02-04 | Ames Co B C | Shock protected needle mount for gauges |
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