Alloy
AssigneeNippon Steel Corporation
InventorsKiyoko Takeda, Shunichi Otsuka
Life of this patent
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Abstract
Provided is an alloy having a high strength and a low thermal expansion coefficient. The alloy according to the present disclosure includes a chemical composition containing, in mass %: C: 0.10% or less, Si: 0.50% or less, Mn: 0.15 to 0.60%, P: 0.015% or less, 5: 0.0030% or less, Ni: 30.0 to 40.0%, Cr: 0.50% or less, Mo: 0.50% or less, Co: 0.250% or less, Al: 0.0150% or less, Ca: 0.0050% or less, Mg: 0.0300% or less, N: 0.0100% or less, O: 0.0300% or less, Pb: 0.0040% or less, and Zn: 0.020% or less, one or more elements selected from the group consisting of Nb: 0 to less than 0.145%, Ti: 0 to less than 0.145%, and. V: 0 to less than 0.145%: 0.015 to less than 0.145% in total, with the balance being Fe and impurities, and satisfying Formula (1). (Nb+3×Ti+V)/(C+N)≤6.00 (1)
Claims4
An alloy having a chemical composition consisting of:
- in mass %,
- C:
- 0.02 to 0.10%,
- Si:
- 0.50% or less,
- Mn:
- 0.15 to 0.60%,
- P:
- 0.015% or less,
- S:
- 0.0030% or less,
- Ni:
- 30.0 to 40.0%,
- Cr:
- 0.50% or less,
- Mo:
- 0.50% or less,
- Co:
- 0.250% or less,
- Al:
- 0.0150% or less,
- Ca:
- 0.0050% or less,
- Mg:
- 0.0300% or less,
- N:
- 0.0100% or less,
- O:
- 0.0300% or less,
- Pb:
- 0.0040% or less,
- Zn:
- 0.020% or less,
- a total of one or more elements selected from the group consisting of Nb:
- 0 to less than 0.145%, Ti:
- 0 to less than 0.145%, and V:
- 0 to less than 0.145%:
- 0.015 to less than 0.145%,
- Cu:
- 0 to 0.300%,
- Sn:
- 0 to 0.100%,
- W:
- 0 to 0.200%, and
- B:
- 0 to 0.0040%,
- with the balance being Fe and impurities, and
- satisfying Formula (1):
- (Nb+3×Ti+V)/(C+N)≤5.20 (1)
- where symbols of elements in Formula (1) are to be substituted by contents of the elements in the chemical composition of the alloy, in mass %.
Dependencies are inferred from the claim text.