1. Main application:
Standard material for hot forming tools, extrusion tools, forging dies, pressure casting tools, hot shear knives, tools for plastic industry. Also available in EFS and ESR condition where better properties are required.
2. Manufacturers:
Tai Steel, Fusteel
3. Delivery conditions:
Conventional or ESR, hot rolling or forging, black surface or milling
Hardness: annealed to HB=<229
4. General
ESR steel, high cleanliness, homogeneous microstructure, better heat resistance and toughness good resistance to high temperature metal abrasion, better high tempering resistance, hardness steady working under 600.Low dimensional distortion. good heat checking resistance, and cold/heat fatigue resistance
5. Chemical analysis:
|
C
|
Si
|
Mn
|
Cr
|
V
|
Mo
|
|
0.32~0.45
|
0.80~1.20
|
0.20~0.50
|
4.75~5.50
|
0.80~1.20
|
1.10~1.75
|
6. Mechanical properties:
High strength at elevated temperatures, high hot wear resistance, good toughness, thermal conductivity and resistant to hot cracking, limited water cooling possible. Similar to JIS SKD61, DIN 1.2344.
7. Available sizes:
Round Bar: Φ 6-410mm
Flat: 8-160*205-710mm
Mould: 200*200-1200*1000mm
Length: 3000-12000mm
Mill deliver conditions, or sawing or cutting for customer request.
8. Compared grades, based on usage:
|
Chinese
|
American
|
German
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Swedish
|
Japanese
|
EN
|
|
GB
|
AISI
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DIN
|
ASSAB
|
JIS
|
ISO 4957
|
|
4Cr5MoSiV1
|
H13
|
1.2344
|
8407
|
SKD61
|
X40CrMoV5-1
|
|
Grade
|
Standard
|
C
|
Si
|
Mn
|
Cr
|
Mo
|
V
|
PćS≤
|
|
H13
|
ASTM
|
0.32-0.45
|
0.80-1.20
|
0.20-0.50
|
4.75-5.50
|
1.10-1.75
|
0.80-1.20
|
0.030
|
|
1.2344
|
DIN
|
0.35-0.42
|
0.80-1.20
|
0.25-0.50
|
4.80-5.50
|
1.20-1.50
|
0.85-1.15
|
0.03ć0.02
|
|
4Cr5MoSiV1
|
GB
|
0.32-0.42
|
0.80-1.20
|
0.20-0.50
|
4.75-5.50
|
1.10-1.75
|
0.80-1.20
|
0.030
|
|
SKD61
|
JIS
|
0.35-0.42
|
0.80-1.20
|
0.25-0.50
|
4.80-5.50
|
1.00-1.50
|
0.80-1.15
|
0.03ć0.02
|
9. Heat treatment ,for reference:
|
Quenching centigrade degree
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Tempering centigrade degree/ HRC
|
||||||||||
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1010~1060
centigrade degree
|
100
|
200
|
300
|
400
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500
|
550
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600
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650
|
700
|
||
|
Air/oil or salt bath
|
52
|
52
|
52
|
54
|
54
|
54
|
50
|
42
|
32
|
||
|
Physical features:
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Temperature [oC]
|
20-100
|
20-300
|
20-500
|
20-700
|
|
Thermal expansion[10-6.K-1]
|
10.8
|
12.3
|
13.0
|
13.5
|
|
|
Temperature [oC]
|
20
|
350
|
700
|
|
|
|
Heat conductivity[W.m-1.K-1]
|
25.6
|
28.4
|
29.4
|
|
Recommended temperatures for heat processing:
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Soft annealing:
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Temperature [oC]
|
Cooling
|
|
750-800
|
Furnace
|
|
|
Annealing after decreasing stress:
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Temperature [oC]
|
Cooling
|
|
600-650
|
Furnace
|
|
|
Hardening and tempering:
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Temperature [oC]
|
Hardening
|
|
1020-1060
|
oil, pressure gas (N2),
air or hot bath
500 - 550°C
|