Cold Work Tool Steel bar A8/T30108 – GMTC

A8

  • T30108

SpecificationASTM A681

AISI A8 is premium medium carbon high Cr, Mo, V alloy tool steel. When compared to D2 with a high carbon and chromium content, A8 has higher toughness. It also has better wear resistance than shock-resisting steel, such as S7 so that it is the best choice for the applications that require high strength and high mold no.

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Introduction

Product properties

˙Good cutting ability

˙High hardenability

˙High surface strength

˙Easy to repair and weld

Industrial Applications

˙Stamping mold

˙Punch

˙Forming roll

Specifications

Chemical composition (wt. %)

Element
C
Si
Mn
P
S
Cr
Mo
W
Min.
0.50
0.75
0.20
-
-
4.75
1.15
1.00
Max.
0.60
1.10
0.50
0.030
0.030
5.50
1.65
1.50

Physical Property

Density (g/cm^3)
7.85

Modulus of elasticity

Temperature (℃)
Gpa
20
200

Thermal Expansion Coefficient

Temperature (℃)
10^-6/℃
70-800
6.65

Mechanical Property

Items
Specification Values
Annealing Hardness (HBW)
241 max.
Quenching & Tempering Hardness (HRC)
56 min.

Size Ranges

Products
Diameter (mm)
Length (mm)
Rolled bar
10~95
3,000~5,700
Forged bar
95.2~440
3,000~5,700
Billet
130x130, 140x140, 150x150, 160x160
7,000 max

Heat Treatment Conditions

Heat Treatment Conditions
1010℃ Air Cooling +510℃ Air Cooling

Related Application

Click any of application links below to view their detailed introduction

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