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US 2016/0355909 A1Published application
Stainless steel for a plastic mould and a mould made of the stainless steel
OwnerMagnus TIDESTEN, Lena RAHLENinventors
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Abstract
The invention relates to a martensitic stainless steel for plastic forming moulds requiring a high hardness and a good corrosion resistance. The stainless steel consists of in weight % (wt. %): C 0.56-0.82, N 0.08-0.25, C+N 0.60-1.0, Si 1.05-2.0, Mn 0.2-1.0, Cr 12-16, Mo 0.1-0.8, V 0.10-0.45, Al≦0.3, P≦0.05, S≦0.5, optional elements, and balance Fe impurities.
Claims18
A stainless steel for a plastic mould consisting of in weight % (wt. %):
- C 0.56-0.82
- N 0.08-0.25
- C+N 0.64-1.0
- Si 1.05-2.0
- Mn 0.2-1.0
- Cr 12-16
- Mo 0.1-0.8
- V 0.10-0.45
- Al≦0.3
- P≦0.05
- S≦0.5
- optionally
- Ni≦1
- Cu≦3
- Co≦3
- W≦0.8
- Nb≦0.1
- Ti≦0.1
- Zr≦0.1
- Ta≦0.1
- B≦0.01
- Be≦0.2
- Se≦0.3
- Ca0.0003-0.009
- O 003-0.01
- Mg≦0.01
- REM≦0.2
- balance Fe apart from impurities.
25 more elements
Dependencies are inferred from the claim text.