Cold Work Tool Steel bar S7/1.2355 – GMTC

S7

  • 1.2355, T41907

SpecificationASTM A681

This steel product has a special property combination of high impact resistance and toughness. It can be easily processed and heat treated. It has good softening resistance at medium temperatures and often used in the shock resisting applications.

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Introduction

Product properties

˙High impact resistance

˙Good wear resistance

˙Good toughness with high strength

˙High hardenability

˙Softening resistance

Industrial Applications

˙Punch

˙Forged mold

˙Hammer

˙Chipper

˙Fixture mold

˙Cutting tool

˙Firing pin"

Specifications

Chemical composition (wt. %)

Element
C
Si
Mn
P
S
Cr
Mo
V
Ni+Cu
Min.
0.45
0.20
0.20
-
-
3.00
1.30
-
-
Max.
0.55
1.00
0.90
0.030
0.030
3.50
1.80
0.35
0.75

Physical Property

Density (g/cm^3)
7.76

Modulus of elasticity

Temperature (℃)
Gpa
20
210

Thermal Expansion Coefficient

Temperature (℃)
10^-6/℃
400
13.8
500
14.1

Thermal Conductivity

Temperature (℃)
W/m·K
20
28.5

Mechanical Property

Items
Specification Values
Annealing Hardness (HBW)
229 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
Flat bar
80x80 (min.)
Based on the customer needs

Heat Treatment Conditions

Heat Treatment Conditions
954℃ Air Cooling +204℃ Air Cooling

Related Application

Click any of application links below to view their detailed introduction

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