1.2550 60WCrV8 AISI S1 cold work steel
1. Applications:
Highly stressed applications, blanking dies for cutting sheets up to 12 mm thickness, heavy duty cold piercing punches, cutting, punching and blanking tools for heavy plates, cold forming tools, tablet compression tools, shear blades for cold and hot works, woodworking tools, chipping knives, shank tools for pneumatic equipment, deburring and coining tools, hot work tools for low thermal stresses, ejectors, chopping blades and milling cutters, upsetting tools, flash trimming and splitting dies, industrial knives, hot swaging dies, pneumatic chisels, solid embossing dies, cold and hot punching tools.
2. Chemical analysis:
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C
|
Si
|
Mn
|
Cr
|
V
|
P/S
|
W
|
|
0.55~0.65
|
0.70-1.00
|
0.15-0.45
|
0.90 ~1.20
|
0.10~0.20
|
0.030
|
1.70-2.20
|
3. Mechanical properties:
Oil hardenable, medium carbon with tungsten alloyed shock resistant cold work tool steel, high resistant to impacts with excellent toughness and wear resistance, high fatigue strength, good edge-holding ability, high hardenability, dimensional stability.
4. Compared grades：
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EN ISO
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German
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American
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Japanese
|
|
4957
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DIN
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AISI
|
JIS
|
|
60WCrV8
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1.2550
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S1
|
-
|
5. Delivery condition:
Annealing to Max. 225 HB
6. Available sizes:
Round Bar: Φ 6-410mm
Flat: 8-160*205-710mm
Mould: 200*200-1200*1000mm
Length: 3000-6000mm
Mill deliver conditions, or sawing or cutting for customer request.
7. Physical properties:
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Thermal expansion coefficient
|
10-6 m
|
100°C
|
200°C
|
300°C
|
500°C
|
|
m K
|
11.0
|
12.5
|
13.0
|
14.0
|
|
|
Thermal conductivity
|
W
|
20°C
|
Density
|
||
|
m K
|
25
|
8.00kg/dm3
|
|||
8. Heat treatment:
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Annealing
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Temperature
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Cooling
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Hardness
|
|
710 - 750°C
|
furnace
|
max. 225 HB
|
|
|
|
|||
|
Stress relief annealing
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Temperature
|
Cooling
|
|
|
650°C
|
furnace
|
|
|
|
|
|||
|
Hardening
|
Temperature
|
Quenching media
|
Tempering
|
|
870 - 910°C
|
Oil
|
see tempering
diagram
|
|
Hardness after quenching : 58 - 62 HRC
Hardness after tempering :
100 °C 200 °C 300 °C 400 °C
60 HRC 59 HRC 56 HRC 53 HRC
