D7/T30407 | Cold Work Tool Steel

D7

SpecificationASTM A681

Tool steel D7 is a widely used material. When compared to other materials, such as carbon steel and stainless steel, it has high strength, wear resistance, and corrosion resistance, and can be used to manufacture cutting tools and die forging parts in several applications.

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Introduction
Specifications

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Introduction

Product properties

˙ Wear resistance

˙ Thermal resistance

˙ High strength

˙ Good wear resistance

Industrial Applications

˙ Mold

˙ Metal cutting tool

˙ Brick mold lining

˙ Leveling roll

Specifications

Chemical composition (wt. %)

Element

Ni+Cu

Min.

2.15

0.10

11.50

0.70

3.80

Max.

2.50

0.60

0.030

13.50

1.20

4.40

0.75

Physical Property

Density (g/cm^3)

7.6

Modulus of elasticity

Temperature (℃)

Gpa

190

Thermal Expansion Coefficient

Temperature (℃)

10^-6/℃

Thermal Conductivity

Temperature (℃)

W/m·K

Mechanical Property

Items

Specification Values

Annealing Hardness

262 HBW max.

Quenching & Tempering Hardness

63 HRC 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

816℃ Preheating + 1066℃ Air Cooling + 204℃ Air Cooling

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Cold Work Tool Steel bar D7/T30407 – GMTC

D7

Product properties

Industrial Applications

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