US1404908A - Method of treating steel alloys which contain chromium and nickel - Google Patents
Method of treating steel alloys which contain chromium and nickel Download PDFInfo
- Publication number
- US1404908A US1404908A US846169A US1914846169A US1404908A US 1404908 A US1404908 A US 1404908A US 846169 A US846169 A US 846169A US 1914846169 A US1914846169 A US 1914846169A US 1404908 A US1404908 A US 1404908A
- Authority
- US
- United States
- Prior art keywords
- nickel
- steel alloys
- treating steel
- alloys
- contain 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
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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
Definitions
- This invention relates to a method of treating steel alloys, which contain more than 6% chromium, from to nickel and not over 1% carbon and which possess a hardness below 350 Brinell scale in the forged state.
- said steel from 8% to chromium are either slig tly magnetic or else entirely non-magnetic, are heated to a temperature situated between 1100 and 1200 C. and thereupon (quickly or slowly) u cool.
- Method of treating steel alloys contain ing 8% to 25% chromium, 20% to 1 ⁇ % nickel and not over "1% carbon and having a hardness below 350 (Brinnel scale) in the forged. state, saidmethod consisting in heating the alloys to a temperature from 1100 to 1200 C. and subsequently cooling them quickly, whereby the alloys are made tough and unmagnetic.
Description
BENIN?!) ST moths.
USS, 01E BREDENEY, GERMANY.
METHOD 01E TREATING STEEL ALLOYS WHICH CONTAIN CHROMIUM AND NICKEL.
Specification of Letters Patent. Pmtqgntgfl Jam, 31, 11922.,
No Drawing; @riginel application filed June 25, 1913, Serial No. 775,765. Divided and this application filed Jane-19, 1914.
fierial No. 848,169.
(GRANTED UNDER THE PEOVISIGNS 01" THE ACT 0F MARCH 3, 1921;, 41 STAT. L, 1313.
This application is a division of my appli-' cation filed June 25, 1913, Ser al No. 775,765.
This invention 'relates to a method of treating steel alloys, which contain more than 6% chromium, from to nickel and not over 1% carbon and which possess a hardness below 350 Brinell scale in the forged state.
According to this invention said steel from 8% to chromium are either slig tly magnetic or else entirely non-magnetic, are heated to a temperature situated between 1100 and 1200 C. and thereupon (quickly or slowly) u cool.
By means of this heating treatment said alloys will obtain a very great toughness and are made easy to work. The slightly magnetic alloys will become in addition unmagnetic, when quickly cooled.
I claim:
1.. Method of treating steel alloys containing at least 8% chromium, 20% to $72. nickel and not over 1% carbon and having a hardness below 350 (Brinell scale) in the forged state, said method consisting inheating the alloys to a temperature from 1100 to 1200 C. and subsequently cooling them, whereby the alloys obtain great toughness.
2. Method of treating steel alloys contain ing 8% to 25% chromium, 20% to 1}% nickel and not over "1% carbon and having a hardness below 350 (Brinnel scale) in the forged. state, saidmethod consisting in heating the alloys to a temperature from 1100 to 1200 C. and subsequently cooling them quickly, whereby the alloys are made tough and unmagnetic.
In testimony whereof the foregoing speci- -fication is signed in the presence of two witnsses.
- BENNO STRAUSS. [Ls] Witnesses:
ALBERT NUFER,
,FRANOES Nurse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US846169A US1404908A (en) | 1913-06-25 | 1914-06-19 | Method of treating steel alloys which contain chromium and nickel |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US775765A US1404907A (en) | 1913-06-25 | 1913-06-25 | Heat treatment of nickel-chrome steel |
| US846169A US1404908A (en) | 1913-06-25 | 1914-06-19 | Method of treating steel alloys which contain chromium and nickel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1404908A true US1404908A (en) | 1922-01-31 |
Family
ID=27119093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US846169A Expired - Lifetime US1404908A (en) | 1913-06-25 | 1914-06-19 | Method of treating steel alloys which contain chromium and nickel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1404908A (en) |
-
1914
- 1914-06-19 US US846169A patent/US1404908A/en not_active Expired - Lifetime
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