1.3207 HS10 4 3 10 JIS SKH57 High Speed tool Steels
1. Applications:
Universally applicable all types of heavy duty cutting tools for very hard materials, highly stressed milling cutters and cold work tools, turning and milling tools for roughing and finishing works where maximum tool life is required, tools for high cutting speeds, woodworking tools, turning tools for austenitic and other materials, profile blades, automatic lathe working tools, tool bits.
2. Chemical composition：
|
Grade
|
Standard
|
C
|
Si
|
Mn
|
Cr
|
Mo
|
V
|
W
|
P、S≤
|
Co
|
|
1.3207
|
DIN
|
1.20-1.35
|
≤0.45
|
≤0.40
|
3.80-4.50
|
3.20-3.90
|
3.00-3.50
|
9.00-10.00
|
0.030
|
9.50-10.50
|
3. Mechanical properties:
High speed steel with maximum performance properties due to its compositon, contains high tunstgen and cobalt alloys,optimum cutting properties, high wear resistance and red hardness, high temperature strength and toughness, edge holding ability, fine grain size and carbide particle size.
4. Conditions of delivery：
EAF/ESR，forged/hot rolled，black/turned(milled), annealed
Soft annealed to max. 300 HB
5. Available sizes:
Round Bar: Φ 6-410mm
Flat: 8-160*205-710mm
Mould: 200*200-1200*1000mm
Length: 3000-6000mm
6. Physical properties:
|
Temperature [oC]
|
100
|
200
|
300
|
500
|
|
Thermal expansion [10-6.K-1]
|
9.6
|
10.0
|
10.1
|
10.5
|
|
Temperature [oC]
|
20
|
Density
|
||
|
Heat conductivity [W.m-1.K-1]
|
19
|
8.30kg/dm3
|
||
7. Heat treatment:
|
Soft annealing:
|
Temperature [oC]
|
Cooling
|
Hardness
|
|
|
770-840
|
Furnace
|
max. 300 HB
|
||
|
Stress relief annealing
|
Temperature [oC]
|
Cooling
|
|
|
|
600-650
|
Furnace
|
|
|
|
|
Hardening and tempering:
|
Temperature [oC]
|
Quenching media
|
Tempering
|
|
|
1200-1240
|
oil, Salt bath, Vacuum 500 - 550°C
|
see tempering
diagram
|
||
Tempering: 540 - 570 °C
Hardness after tempering: 65 - 67 HRC
