AISI A8

AISI A8



Product Description

1.2631 / A8 Cold Work Tool Steel

Standards

DIN

AISI

JIS

ГОСТ

X50CrMoW9-1-1

1.2631

A8

 

 

 

Chemical composition (typical analysis in %)

C

Si

Mn

P

S

Cr

Mo

W

0.50-0.60

0.75-1.10

0.20-0.50

≤0.030

≤0.030

4.75-5.50

1.15-1.65

1.00-1.50

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Steel properties :

A medium carbon, air-hardening tool steel that is characterized by a combination of very good toughness, intermediate wear resistance, and excellent dimensional stability in heat treatment. Has been used for punches that operate in the 55 to 60 Rockwell C hardness range. More toughness than A-2 or D-2, More wear resistance than S-7, very stable in heat treatment.

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Applications :

 

Punches, drift pins, pneumatic tools, forming dies, blanking dies, chuck jaws, hammers, hot rolls, and hot and cold shear knives.

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Size range :

Diameter (mm)

Thickness (mm)

Width (mm)

8 - 450

8 - 400

Max 810

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Delivery condition :

Soft annealed to max. 240 HB

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Heat Treatment:

Soft annealing

Temperature(°C)

Cooling

Hardness

830 - 850

furnace

max. 240 HB

 

Forging

Temperature(°C)

Cooling

 

 

1090 - 1150

furnace

 

 

Hardening

Temperature(°C)

Cooling

Tempering

 

995 - 1010

oil or air or hot bath

see tempering diagram

usually 150 - 590°C

 

 

 

Remarks: All technicial information is for reference only.

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