JPS6456856A - Low-expansion steel - Google Patents
Low-expansion steelInfo
- Publication number
- JPS6456856A JPS6456856A JP21491387A JP21491387A JPS6456856A JP S6456856 A JPS6456856 A JP S6456856A JP 21491387 A JP21491387 A JP 21491387A JP 21491387 A JP21491387 A JP 21491387A JP S6456856 A JPS6456856 A JP S6456856A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- low
- expansion coefficient
- content
- thermal expansion
- 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
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
PURPOSE:To develop a steel having high anneal hardness and low thermal expansion coefficient, by maintaining Cr content in a steel at a specific value, reducing Mn content, and controlling C and Si contents to specific values, respectively. CONSTITUTION:As a low-expansion steel most suitable used for precision electronic equipment member, a steel having a composition containing, by weight, 0.1-0.3% C, <1.0% Si, <1.5% Mn, 6.0-12.0% Cr, and, as impurities, <0.04% P, <0.04% S, and <0.2% Ni is used. By this method, the low-expansion steel in which Cr sharply reduced thermal expansion coefficient is incorporated by relatively large amounts and the content of Mn increasing thermal expansion coefficient but improving hardenability is controlled to a low value and, further, steel strength is improved by regulating respective contents of C and Si to specific ranges and which has an average linear expansion coefficient at 35-100 deg.C as low as <=11.5X10<-6>/ deg.C and also has 75-100 anneal hardness HRB after cold working can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62214913A JP2515125B2 (en) | 1987-08-28 | 1987-08-28 | Low expansion steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62214913A JP2515125B2 (en) | 1987-08-28 | 1987-08-28 | Low expansion steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6456856A true JPS6456856A (en) | 1989-03-03 |
| JP2515125B2 JP2515125B2 (en) | 1996-07-10 |
Family
ID=16663650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62214913A Expired - Lifetime JP2515125B2 (en) | 1987-08-28 | 1987-08-28 | Low expansion steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2515125B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50104716A (en) * | 1974-01-28 | 1975-08-19 | ||
| JPS6244526A (en) * | 1985-08-20 | 1987-02-26 | Nippon Mining Co Ltd | Manufacture of alloy for sealing glass |
-
1987
- 1987-08-28 JP JP62214913A patent/JP2515125B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50104716A (en) * | 1974-01-28 | 1975-08-19 | ||
| JPS6244526A (en) * | 1985-08-20 | 1987-02-26 | Nippon Mining Co Ltd | Manufacture of alloy for sealing glass |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2515125B2 (en) | 1996-07-10 |
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