Similar Grade: A8, 1.2631
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 Process: EF, EF/EAF+LF+VD, EF/EAF+ESR
Delivery condition:
Annealed , Quenched + Tempered
Surface state:
Black, Grinded, Peeled, Polished, Rough turned.
Feature:
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 |
W |
Mo |
| 0.50-0.60 |
0.20-0.50 |
0.030max |
0.030max |
0.75-1.10 |
4.75-5.50 |
1.00-1.50 |
1.15-1.65 |
Ultrasonic Test: Material will be ultrasonically tested at appropriate stages of the manufacture to ensure the quality, as agreed between seller and purchaser.
Heat treatment
Hardness :Annealed(+A) max: 241BHN
Tool steel A8 when heat-treatment the preheat Temperature need reach 788°C, and the temperature may be ± 14 °C .
Tool steel A8 when austenitizing ,should keep 5-15 minutes long. If is the salt bath ,temperature should keep in the 996 °C, and shall be ± 5.6 °C. Or is the controlled atmosphere furnaces, temperature should keep in the 1010 °C, and shall be ± 5.6 °C.
Quenching: Tool steel A8 Hardening quenching using air cooling, and it's hardness min is 56 RC.
Tempering: Tool steel A8 general tempering temperature is 510°C. Double tempering of Double tempering of tool steel A8 is recommended.
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