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Hot work die steel
The similar grades of foreign countries

China
4Cr5MoSiV1

America
H13

Japan
SKD61

German
X40CrMoV51
(1.2344)

Bohler
W302

Chemical component (%)

Standard

C

Mn

Si

Cr

P

S

Mo

V

GB/T1299-2000

0.32-0.45

0.20
/0.50

0.80
/1.20

4.75
/5.50

<=0.030

<=0.030

1.10
/1.75

0.80
/1.20

Specialty

Harden and air cooling steel, 600`C work, high rigidity, high endurance, anti-heating, anti-cracking, electric sediment and middle-melting steel, compact structure, refined in electric cooker, quality of steel is pure, owned good character of equal direction

 

Use

Extrusion mold of aluminum and magnesium, die-casting mold, especially adapt to the mold in large and complicated form.

Extrusion mold of copper alloy, die-casting mold

Hot pressing machine mold

 

Heat treatment

Quench:1000-1040`C via 600`C and 850`C, preheating oil or wind cooling

Temper temperature and rigidity HBC(reference)

quench hardening

108-300`C

450-500`C

550-5700`C

53-55

51-52

53-54

50-52

Temper temperature should be higher than working temperature in order to stabilize the working size of mold

Heat up to 650`C of average temperature in order to eliminate the machined stress, 500`C air cooling after electric cooker cooling

Tempering, 800-850`C,slow cooling after diathermia

Dimension(mm)

Round: ¦Õ60-¦Õ400 Flat :20-80*40-800 80-300*500-800

The state of leaving factory

HBS<=235

Hot work die steel
The similar grades of foreign countries

China
3Cr2W8V

America
H21

Japan
SKD5

German

Bohler

Chemical component (%)

Standard

C

Mn

Si

Cr

P

S

W

V

GB/T1299-2000

0.30
/0.40

<=0.40

<=0.40

2.20
/2.70

<=0.030

<=0.030

7.50
/9.00

0.20
/0.50

Specialty

Better performance of high temperature and mechanics, better permanence

Use

Pressing machine die-casting mold, hot extruding dies, heading die, cutting die, die-casting mold

 

Heat treatment

Quench:1050-1150`C,oil cooling, rigidity is 40-50HRC

Temper temperature:550-650`C, temper two times, every time two hours, temper rigidity 40-50HRC

Annealing: anneal in isothermal temperature and heating temperature 840-880`C, isothermal temperature720-740`C,anneal rigidity<=241HB

Dimension(mm)

Round:¦Õ50-¦Õ280 Flat:20-300*40-610

The state of leaving factory

HBS255-207

Hot work die steel
The similar grades of foreign countries

China
5CrNiMo

America
L6

Japan
SKT4

German
1.2713

Bohler

Chemical component (%)

Standard

C

Mn

Si

Cr

P

S

Ni

Mo

GB/T1299-2000

0.50
/0.60

0.50
/0.80

<=0.40

0.50
/0.80

<=0.030

<=0.030

1.40
/1.80

0.15
/0.30

Specialty

high rigidity, high endurance, a certain endurance, good penetration

Use

Swage in small and middle size, length of side<=300mm,working temperature<500`C

Heat treatment

Quench:820-860`C,HRC38-42

Temper:520-540`C,HRC38-42

Dimension(mm)

Round:¦Õ100-¦Õ400 Flat:20-300*40-800

The state of leaving factory

HBS241-197

Hot work die steel
The similar grades of foreign countries

China
5CrMnMo

America
6G

Japan
SKT5

German

Bohler

Chemical component (%)

Standard

C

Mn

Si

Cr

P

S

Mo

GB/T1299-2000

0.50
/0.60

1.20
/1.60

0.25
/0.60

0.60
/0.90

<=0.030

<=0.030

0.15
/0.30

Specialty

high rigidity, high endurance, a certain endurance, good penetration

Use

Swage in small and middle size, hot extruding dies

Heat treatment

Quench:820-860`C,oil cooling

Temper: HRC62

Dimension(mm)

Round:¦Õ100-¦Õ400 Flat:20-300*40-800

The state of leaving factory

Spheroidal anneal HBS210

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