1.SKD11 2.Vacuum degassing refining steel, pure endoplasm 3.Good mechanical processing 4.Good harden ability AND toughness
SKD11
High wear-resistant cold working die steel
Specialty:
1. Vacuum degassing refining steel, pure endoplasm
2. Good mechanical processing (increase 20% than SKD1 in machinability)
3. Good harden ability (difficult to appear the quenching crack)
4. Excellent abrasion resistance (apply to the blanking die of stainless steel and high hardness materials)
5. Good toughness
Chemical composition:
Grade | Chemical composition(%)(less than or equal to expect C,Cr,Mo,V) | |||||||||
C | Si | Mn | P | S | Cu | Ni | Cr | Mo | V | |
SKD11 | 1.4~1.6 | 0.4 | 0.6 | 0.03 | 0.03 | 0.25 | 0.5 | 11~13 | 0.8~1.2 | 0.2~0.5 |
Conditions of heat treatment:
Forging(°C) | Heat treatment(°C) | Hardness | Transition point(°C) | |||||
Annealing | Quenching ( note )
| Tempering
| Annealing(HB) | Quenching(HRC) | Tempering(HRC) | Ac | Ar | |
1100~900 | 830~880Slow cooling | 1000~1050Air cooling | 150~250Air cooling | less than or equal to 255 | - | more than or equal to 58 | 815~875 | 765~705 |
1020~1050Air cooling | 500~530Air cooling | |||||||
Uses:
Uses
| Hardness
| Use
| Hardness
|
Blanking die | HRC58-62 | Senior gauge | HRC60-65 |
Forming rolls | HRC58-63 | Screw roller | HRC60-63 |
Cross recessed screw forming die | HRC57-62 | Cold extrusion molding press with the original mold | HRC58-65 |
Tensile modulus | HRC58-63 | Cold upsetting die | HRC58-62 |
Scissors | HRC50-65 | Thermosetting resin forming mold | HRC56-61 |
Specifications:
Varieties | Specifications(mm) | Condition of delivery |
Line cutting plate punch material | (4-80mm)×(200-300mm)×(200-300mm) | Two sides grinded,HRC58-61 |
Flat steel | (10-90mm)×(100-600mm) | Black
|
Round bar | Φ8-200mm | Black
|
SKD11 Cold Work Die Steel,Pre-hardened steel sheet,alloy
