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US 11,377,718 B2Granted
Steel for mold
AssigneeDaido Steel Co., Ltd.
InventorMasamichi Kawano
Life of this patent
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Abstract
The present invention relates to a steel for a mold, having a composition containing, in mass %, 0.045≤C≤0.090, 0.01≤Si≤0.50, 0.10≤Mn≤0.60, 0.80≤Ni≤1.10, 6.60≤Cr≤8.60, 0.01≤Mo≤0.70, 0.001≤V≤0.200, 0.007≤Al≤0.150, and 0.0002≤N≤0.0500, with the balance being Fe and unavoidable impurities.
Claims32
A steel having a composition comprising, in mass %:
- 0.045≤Ca≤0.090,
- 0.01≤Si≤0.50,
- 0.10≤Mn≤0.60,
- 0.80≤Ni≤1.10,
- 6.60≤Cr≤8.60,
- 0.01≤Mo≤0.70,
- 0.001≤V≤0.200,
- 0.050≤Al≤0.094, and
- 0.0002≤N≤0.0500,
- with the balance being Fe and unavoidable impurities, and having an impact value exceeding 50 J/cm2, wherein the steel has a hardness 32 HRC to 44 HRC.
7 more elements
Dependencies are inferred from the claim text.