Claims
- 1. A high strength stainless steel essentially consisting of not more than 0.10% C, more than 1.5% and not more than 2.95% Si, less than 0.5% Mn, not less than 4.0% and not more than 8.0% Ni, not less than 12.0% and not more than 18.0% Cr, not less than 0.5% and not more than 3.5% Cu, not more than 0.15% N and not more than 0.004% S, wherein the total content of C and N is not less than 0.10% the balance being Fe and incidental impurities including up to 0.020% Al and up to 0.020% Ti, and the A' value (%) as defined below is not less than 42 and the Md(N) as defined below is 35-95 ##EQU6##
- 2. The high strength stainless steel as claimed in claim 1, wherein the C content is not more than 0.08%, the Si content is not less than 1.5% and not more than 2.95%, the Mn content is less than 0.45%, the Ni content is not less than 4.5% and not more than 7.5%, the Cr content is not less than 14.0% and not more than 17.0%, the Cu content is not less than 0.8% and not more than 3.0%, the N content is not more than 0.13% and the S content is not more than 0.0035%.
- 3. The high strength stainless steel as claimed in claim 2, wherein the C content is not more than 0.075%, the Si content is not less than 1.5% and not more than 2.95%, the Mn content is less than 0.42%, the Ni content is not less than 5.50% and not more than 7.30%, the Cr content is not less than 14.5% and not more than 16.5%, the Cu content is not less than 1.00% and not more than 2.65%, the N content is not more than 0.125% and the S content is not more than 0.0030%.
CROSS REFERENCE TO THE RELATED APPLICATION
This is a continuation-in-part application of Application Ser. No. 870,824 filed on June 5, 1986, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3785787 |
Yokota et al. |
Jan 1974 |
|
4378246 |
Hoshino et al. |
Mar 1983 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
2453109 |
May 1975 |
DEX |
56-77364 |
Jun 1981 |
JPX |
62-50442 |
Mar 1987 |
JPX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
870824 |
Jun 1986 |
|