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US 12,338,517 B2Granted
Stainless steel and a cutting tool body made of the stainless steel
AssigneeUddeholms AB
InventorsStaffan Gunnarsson, Magnus Tidesten
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Abstract
The invention relates to a stainless steel intended for cutting tool bodies or holders for cutting tools and a cutting tool body made of the stainless steel. The stainless steel includes the following, in weight %: C 0.14-0.25, N 0.06-0.15, Si 0.7-1.2, Mn 0.3-1.0, Cr 12-15, Ni 0.3-0.8, Mo 0.05-0.4, V 0.05-0.4, Al 0.001-0.3, and optional components and balance Fe apart from impurities.
Claims10
A cutting tool holder for indexable inserts, wherein the cutting tool holder consists of a pre-hardened stainless steel consisting of, in weight % (wt. %):
- C 0.14-0.25
- N 0.06-0.15
- Si 0.7-1.2
- Mn 0.3-1.0
- Cr 12-15
- Ni 0.3-0.8
- Mo 0.05-0.4
- V 0.22-0.4
- Al 0.001-0.3
- S≤0.005
- optionally
- P≤0.05
- Cu≤3
- Co≤5
- W≤0.5
- Nb≤0.1
- Ti≤0.1
- Zr≤0.1
- Ta≤0.1
- B≤0.01
- Be≤0.2
- Se≤0.3
- Ca 0.0003-0.009
- O 0.003-0.01
- Mg≤0.01
- REM≤0.2, and
- balance Fe apart from impurities,
- wherein the pre-hardened stainless steel contains a content of residual austenite that is less than 15 volume %, and
- wherein the cutting tool holder has a hardness of 40-52 HRC.
26 more elements
Dependencies are inferred from the claim text.