Claims
- 1. Steel material for hot work tools, characterised in that it has an alloy composition that in weight-% essentially consists of:0.3-0.4 C 0.2-0.8 Mn 4-6 Cr 1.8-2.5 Mo 0.4-0.6 V balance iron and unavoidable metallic and non-metallic impurities, said metallic impurities comprising titanium, zirconium and niobium, which may be present in the following maximum amounts: max 0.01 Ti max 0.02 Zr max 0.02 Nb and said non-metallic impurities comprising silicon, nitrogen, oxygen, phosphor and sulphur, which may be present in the following maximum amounts: max. 0.25 Si max. 0.010 N max. 10 ppm O max. 0.010 P max 0.010 S.
- 2. Steel material in accordance with claim 1, characterised in that it contains max. 0.20 Si.
- 3. Steel material in accordance with claim 1, characterised in that it contains max. 0.0010 S.
- 4. Steel material in accordance with claim 1, characterised in that it contains:0.33-0.37 C 0.4-0.6 Mn, and 4.5-5.5 Cr.
- 5. Steel material in accordance with claim 4, characterised in that it contains 4.85-5.15 Cr and 2.2-2.4 Mo.
- 6. Steel material in accordance with claim 1, characterised in that it contains max. 0.008 N.
- 7. Steel material in accordance with claim 1, characterised in that it contains max. 8 ppm O.
- 8. Steel material in accordance with claim 1, characterised in that it contains max. 0.008 P.
- 9. Steel material in accordance with claim 1, characterised in that it contains max. 0.0008 S.
- 10. Steel material in accordance with claim 1, characterised in that it contains 0.35 C, max. 0.15 Si, 0.5 Mn, max. 0.0008 S, 5 Cr, 2.3 Mo, 0.55 V, max. 0.008 N, max. 8 ppm O.
- 11. Steel material in accordance with claim 1, characterised in that it contains max. 0.008 Ti, max. 0.016 Zr, and max. 0.010 Nb.
- 12. Steel material in accordance with claim 1, characterised in that it contains 0.5-0.6 V.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9801044 |
Mar 1998 |
SE |
|
Parent Case Info
This application is a 371 of PCT/SE99/00217 filed Feb. 18, 1999.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/SE99/00217 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO99/50468 |
10/7/1999 |
WO |
A |
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5622674 |
Bourrat |
Apr 1997 |
A |