SKD61 STEEL
SKD61 STEEL
Chi tiết sản phẩm1 Product charateristics
- Exceptional toughness and red hardness
- Heat crack and wear resitance
- Anti-heat treatment transformation
- Suitable for hot die casting molds with its high vanadium content
- Suitable for aluminum and magnesium
2 Chemical Composition (JIS G4404)
|
Standard |
Chemical Composition Rate ( Wt, % ) |
|||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
|
|
SKD61 |
0.35 |
0.8 |
0.25 |
|
|
4.8 |
1 |
0.8 |
|
0.42 |
1.2 |
0.5 |
0.03 |
0.02 |
5.5 |
1.5 |
1.15 |
|
3. Physical properties
- Thermal expension co-efficient: 12.5 ( 25~200˚C )
- Specifice gravity: 7.8g/cm3
- Heat Conductivity (W/mK): 24(20˚C)
- Young's Modulus (GPa): 205
4. Heat treatment conditions
- A temperature is set higher (+25 to 50˚C) than the operative temperature
- When the temperature of solid solution rises, its hardness increases as well. The 2nd hardening occurs in the range from 400 to 530˚C
5. Heat treatment process
|
Steel |
Annealing |
Quenching |
Tempering |
Hardness |
||
|
Temperature |
Temperature |
|
Nhiệt độ |
|
( HRC) |
|
|
( °C) |
( °C) |
( °C) |
|
|||
|
SKD61 |
820~870 |
1000~1050 |
Air |
550~650 |
Air |
50~55 |
6. Heat treament method
|
Steel |
Method |
|||
|
vacuum heat treatment |
QT |
Nitriding |
Carburizing |
|
|
SKD61 |
MAX: |
MAX: |
MAX: |
NO |
|
52-54 HRC |
52-54 HRC |
700-800 HV |
||
7. Apllications
- Molds for manucfacturing materials in hot state
- Used for hot die casting and extrusion molds
- Suitable for Aluminum and magnesium pressing dies
