S1 1.2550 60WCrV8 Cold Work Tool Steel
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.