Austenite stainless steel
AssigneeNippon Yakin Kogyo Co., Ltd.
InventorsYutaka Kobayashi, Takeya Toge, Yoshito Fujiwara
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Abstract
Disclosed is an austenite stainless steel comprising: no more than 0.05% by weight of C; no more than 0.25% by weight of Si; no more than 0.40% by weight of Mn; no more than 0.040% by weight of P; no more than 0.003% by weight of S; 30.0 to 40.0% by weight of Ni; 20.0 to 26.0% by weight of Cr; 5.0 to 8.0% by weight of Mo; no more than 0.1% by weight of Al; 0.001 to 0.010% by weight of B; 0.15 to 0.30% by weight of N; and balance of Fe and inevitable impurity. The austenite stainless steel satisfying formula (1) and (2) mentioned below (wherein "Cr", "Mo", "N", "Si" and "Mn" mean content of each element). Cr+3.3Mo+20N.gtoreq.51 (1) 5Si+Mn<32-(Cr+Mo) (2)
Claims9
An austenite stainless steel comprising:
- no more than 0.05% by weight of C;
- no more than 0.25% by weight of Si;
- no more than 0.40% by weight of Mn;
- no more than 0.040% by weight of P;
- no more than 0.003% by weight of S;
- 30.0 to 40.0% by weight of Ni;
- 20.0 to 26.0% by weight of Cr;
- 5.0 to 8.0% by weight of Mo;
- no more than 0.1% by weight of Al;
- 0.001 to 0.010% by weight of B;
- 0.15 to 0.30% by weight of N;
- and balance being Fe and inevitable impurities;
- said austenite stainless steel satisfying formulas (1) and (2):
- Cr+3.3Mo+20N.gtoreq.51(1)
- 5Si+Mn<32-(Cr+Mo) (2)
Dependencies are inferred from the claim text.