Shape: Round, Flat, Square.
Size Range:
| |
Diameter(mm) |
Thickness (mm) |
Width (mm) |
Length(mm) |
| Round |
50-420 |
- |
- |
2000-5800 |
| Square |
50-420 |
- |
- |
2000-5800 |
| flat |
- |
20-50 |
80-600 |
2000-5800 |
Steel-making Condition: EF, EF/EAF+LF+VD, EF/EAF+ESR
Delivery Condition:
Annealed , Quenched + Tempered
Surface Condition:
Black, Grinded, Peeled, Rough turned, Polished
Features:
1.Competitive price
2.Immediate delivery
3.Premium quality
4.Reliable service
5.MOQ: 1 Ton
| Packing details |
In seaworthy packing, as your requirement. |
| Delivery details |
within 30-50 days |
Chemical Composition:
| C |
Mn |
P |
S |
Si |
Cr |
Mo |
| 0.95-1.05 |
1.80-2.20 |
0.030max |
0.030max |
0.10-0.70 |
0.90-2.20 |
0.90-1.40 |
Heat treatment:
Hardness :Annealed(+A) max: 241 BHN
Tool steel A4 when heat-treatment the preheat Temperature need reach 677°C, and the temperature may be ± 14 °C .
Tool steel A4 when austenitizing ,should keep 5-15 minutes long. If is the salt bath ,temperature should keep in the 843 °C, and shall be ± 5.6 °C. Or is the controlled atmosphere furnaces, temperature should keep in the 857 °C, and shall be ± 5.6 °C.
Quenching: Tool steel A4 Hardening quenching using air cooling, and it's hardness min is 61 RC.
Tempering: Tool steel A4 general tempering temperature is 204°C. Double tempering of Double tempering of tool steel A4 is recommended.
Ultrasonic Test:Material will be ultrasonically tested at appropriate stages of the manufacture to ensure the quality, as agreed between seller and purchaser.
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