Stainless cast steel having good heat resistance and good machinability
AssigneeDaido Steel Co., Ltd.
InventorsShuji Hamano, Michio Okabe
Life of this patent
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Abstract
Disclosed is an austenitic stainless cast steel which has such a good heat resistance as can be used at a high temperature higher than 950° C. and a good machinability. The stainless cast steel consists essentially of, by weight %, C: 0.2-0.4%, Si: 0.5-2.0%, Mn: 0.5-2.0%, P: up to 0.10%, S: 0.04-0.2%, Ni: 8.0-42.0%, Cr: 15.0-28.0%, W: 0.5-7.0%, Nb: 0.5-2.0%, Al: up to 0.02%, Ti: up to 0.05%, N: up to 0.15%, Se: 0.001-0.50% and the balance of Fe and inevitable impurities.
Claims4
A stainless cast steel having good heat resistance and good machinability, which consists essentially of, by weight %, C:
- 0.2-0.4%, Si:
- 0.5-2.0%, Mn:
- 0.5-2.0%, P:
- up to 0.10%, S:
- 0.04-0.2%, Ni:
- 8.0-42.0%, Cr:
- 15.0-28.0%, W:
- 0.5-7.0%, Nb:
- 0.6-2.0%, Al:
- up to 0.02%, Ti:
- up to 0.05%, N:
- up to 0.15%, Se:
- 0.001-0.50% and the balance of Fe and inevitable impurities.
A stainless cast steel having good heat resistance and good machinability, which consists essentially of, by weight %, C:
- 0.2-0.4%, Si:
- 0.5-2.0%, Mn:
- 0.5-2.0%, P:
- up to 0.10%, S:
- 0.04-0.2%, Ni:
- 8.0-42.0%, Cr:
- 15.0-28.0%, W:
- 0.5-7.0%, Nb:
- 0.6-2.0%, Al:
- up to 0.02%, Ti:
- up to 0.05%, N:
- up to 0.15%, Se:
- 0.001-0.50% and further, one or more of Mo:
- up to 2.0%, Zr:
- up to 0.05%, B:
- up to 0.10% and Co:
- up to 10.0%, and the balance of Fe and inevitable impurities.
A stainless cast steel having good heat resistance and good machinability, which consists essentially of, by weight %, C:
- 0.2-0.4%, Si:
- 0.5-2.0%, Mn:
- 0.5-2.0%, P:
- up to 0.10%, S:
- 0.04-0.2%, Ni:
- 8.0-42.0%, Cr:
- 15.0-28.0%, W:
- 0.5-7.0%, Nb:
- 0.6-2.0%, Al:
- up to 0.02%, Ti:
- up to 0.05%, N:
- up to 0.15%, Se:
- 0.001-0.50% and further, one or both of Ca:
- up to 0.10% and REM:
- up to 0.50%, and the balance of Fe and inevitable impurities.
A stainless cast steel having good heat resistance and good machinability, which consists essentially of, by weight %, C:
- 0.2-0.4%, Si:
- 0.5-2.0%, Mn:
- 0.5-2.0%, P:
- up to 0.10%, S:
- 0.04-0.2%, Ni:
- 8.0-42.0%, Cr:
- 15.0-28.0%, W:
- 0.5-7.0%, Nb:
- 0.6-2.0%, Al:
- up to 0.02%, Ti:
- up to 0.05%, N:
- up to 0.15%, Se:
- 0.001-0.50%;
- and further, one or more of Mo:
- up to 2.0%, Zr:
- up to 0.05%, B:
- up to 0.10% and Co:
- up to 10.0%;
- and still further, one or both of Ca:
- up to 0.10% and REM:
- up to 0.50%;
- and the balance of Fe and inevitable impurities.
Dependencies are inferred from the claim text.