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  • Product Name: D3/1.2080/SKD1Cold work tool steel for cuttings/blades/saws/tools
  • Product ID: 2017000
  • 上架时间: 2017-12-04
  • Views : 5717

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D3 tool steel is a high-carbon, high-chromium, oil-hardening tool steel that is characterized by a relatively high attainable hardness and numerous, large, chromium-rich alloy carbides in the microstructure. These carbides provide good resistance to wear from sliding contact with other metals and abrasive materials.

D3 exhibits excellent stability in heat treatment, holding size almost as well as the air-hardening, high-carbon, high-chromium die steels such as D2.

Chemical Composition%

Standard

Grade

C

Si

Mn

P≤

S≤

Cr

Mo

V

W

DIN

1.2080

1.90-2.20

0.10-0.40

0.15-0.45

0.030

0.030

11.0-12.0

-

-

-

ASTM

D3

2.00-2.35

0.10-0.60

0.20-0.60

0.030

0.030

11.0-13.5

-

≤1.0

≤1.0

GB

Cr12

2.00-2.30

≤0.40

≤0.40

0.030

0.030

11.5-13.0

-

-

- 

Specification

Round bar

Diameter

Length

-

Forged round barφ50~280

2000~5800

-

 Rolled round barφ10~80

 2000~5800

-

Flat bar

Thickness(mm)

Width(mm)

Length(mm)

Forged plate20~300

50~710

2000~5800

Rolled plate10~65

155~610

2000~5800

 Heat treatment

 Isothermal annealing after forging:(850870℃×34h,furnace cooling≤30℃/h; 740760℃×45h, furnace cooling≤30℃/h500600℃Air cooling.hardness≤269HB.

 Forging technology

Heating temperature

Start-forging temperature

Finish-forging temperature

Cooling

1120-1140

1080-1100

920-880

  Slow cooling

 

/Quenching Process

Quenching temperature

Cooling medium

Hardness HRC

950-980

Oil

59-63

 

Tempering Process

Purpose

Heating temperature

Tempering time (H)

Times of tempering

Hardness HRC

Elimination of stress and stability of structure

 

180-200

2

1

60-62

Elimination of stress and decrease of hardness

320-350

2

1

57-58

Application

1.Commonly used for manufacturing cold work moulds of excellent abrasion resistance with light shock loads, punch heads, cold cutting scissors, drill bushes, gauges, wire drawing dies, stamping dies, wire drawing sheets, drawing dies, thread rolling dies, etc.

2.Making cutting tools which is used for machiningmaterial of low hardness.

3.Used as plastic mould with good abrasion resistance and long service life.

Delivery condition

Annealed, Black surface, machined surface, peeled surface and other customized surface.

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