1. Applications:
Highly stressed cutting and punching tools for thin sheets, profile rolls, drawing and deep drawing tools, stone processing tools, knives for paper and plastics, shear knives for thin sheets.
2. Steel properties:
Ledeburitic 12% chrome steel, very high wear resistance against abrasive and adhesive wear due to the high volume of hard carbides in the steel matrix, medium toughness, dimensionally stable, high compressive strength, not secondary hardenable. Similar to AISI D3.
3. Chemical composition: (Typical analysis in %)
|
C |
Si |
Mn |
Cr |
S P |
|
1.90~2.20 |
0.10-0.60 |
0.20-0.60 |
11.00-13.00 |
=<0.030 |
4. Condition of delivery:
Soft annealed to max. 248 HB
5. Available sizes:
Round Bar: Φ 6-410mm
Flat: 8-160*205-710mm
Mould: 200*200-1200*1000mm
Length: 3000-6000mm
Mill deliver conditions, or sawing or cutting for customer request.
6. Physical properties:
|
Thermal expansion coefficient |
10 |
20 |
20 |
20 |
20 |
|
m K |
10.8 |
11.6 |
12.3 |
12.5 |
|
|
Thermal conductivity |
W |
|
|
|
|
|
m K |
16.7 |
20.5 |
24.1 |
|
7. Heat treatment:
|
Soft annealing |
Temperature |
Cooling |
Hardness |
|
800 - |
furnace |
max. 248 HB |
|
|
|
|||
|
Stress relief annealing |
Temperature |
Cooling |
|
|
600 - |
furnace |
|
|
|
|
|||
|
Hardening |
Temperature |
Cooling |
Tempering |
|
950 - |
oil, pressure gas (N2), air or hot bath 500 - |
see tempering diagram |
|
