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  • Product Name: L6/1.2713/ SKT4 Hot Work Tool Steel bar/plate/forgings/sheet for cuttings/mold
  • Product ID: 1203
  • 上架时间: 2017-09-05
  • Views : 807

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Chemical Composition(%)

Standard

Grades

C

Si

Mn

P

S

Cr

Mo

V

W

Other

DIN

1.2713

0.50-0.60

0.10-0.40

0.65-0.95

0.030

0.030

0.60-0.80

0.25-0.35

0.07-0.12

 

Ni 1.50-1.80

ASTM

L6

0.65-0.75

0.10-0.50

0.25-0.80

0.030

0.030

0.60-1.20

≤0.50

 

 

Ni 1.25-2.00

GB

5CrNiMo

0.50-0.60

≤0.40

0.50-0.80

0.030

0.030

0.50-0.80

0.15-0.30

 

 

Ni 1.40-1.80

Specification

Round bar

Diameter

Length

-

Forged round bar:φ50~450

2000~6000

-

 Rolled round barφ10~80

 2000~6000

-

Flat bar

Thickness(mm)

Width(mm)

Length(mm)

Forged plate20~300

50~710

2000~6000

Rolled plate10~65

155~610

2000~6000

Characteristics:

1.High Toughness, Intensity and Abrasion resistance

2.High hardenability

Application:

For making large and medium type forging dies

 

Delivery condition: annealed, hardness is below 241HB

 

Heat Treatment  

Soft Annealing(℃)

Cooling

Hardness(HB)

Hardening()

In

Hardness(HRC)

650-710

Furnace

Max.240

830-870

Oil

58 HRC

 

 Quenching Technique

 

Quenching Temperature

Cooling

 

Hardness HRC

Medium

Temperature

Continuation

830-860

 

Oil

20-60

Tempering after 150-180℃

53-58

 

 Forging Technique

Heating Temperature

Initial Forging Temperature

Final Forging Temperature

Cooling

1100-1150

 

1050-1100

850-800

slow cooling(sand/hole)

 

/Tempering Process

Plan

Tempering Purpose

Heating Temperature

Heat  treatment equipment

Hardness HRC

 

 

Eliminate stress, stabilize structure and dimension                              Small type forging dies   Medium type forging dies   Large type forging dies

490-510

520-540

560-580

 

Gas furnace or Electric furnace

44-47

38-42

34-37

 

 

 

Dovetail Tempering

Medium type forging dies

Small type forging dies

620-640   640-660

Gas furnace or Electric furnace

34-37

30-35

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