S1 1.2550 60WCrV8 Cold Work Tool Steel
- Model
- 1.2550
Item specifics
- steel grade
- 1.2550
- Type
- Steel Bar
- Group
- Cold Work Tool Steel
Review
Description
1.2550
Introduction:
1.2550 Cold work steel with very good toughness, dimensionally stable, impact resistant, high hardening capacity. Similar with AISI S1.
Applications:
Typical applications include mandrel bars for drawing steel tubes, swaging, also punching, piercing, trimming dies and shear blades, forming and gripper dies.
Quality Standard:
BS-EN-ISO-4957 Tool Steel
C |
Si |
Mn | P |
S |
0.55-0.65 |
0.7-1.0 |
0.15-0.45 | 0.030 Max |
0.030 Max |
Cr |
V |
W | ||
0.9-1.2 |
0.10-0.20 |
1.7-2.0 |
HEAT TREATMENT:
ANNEALING:
Heat the component slowly and uniformly to 800-810°C. Soak thoroughly for two to three hours and cool slowly in the furnace.
STRESS RELIEVING:
If the machining operations have been severe, we recommend stabilising just before the tool components are finish machined to relieve machining strains. Heat slowly to a temparature of 700°C, allow to cool in air.
HARDENING:
Preheat at 650°C followed by rapid increase of temperature to 900-950°C. Quench in oil. Tempering of this grade is always recommended after hardening.
TEMPERING:
Heat slowly to the required tempering temperature, soak thoroughly for two hours per 25mm section and allow to cool in air. For hot work applications, a minimum tempering temperature of 550°C should be used.
