12Cr2Ni4 mold steel

规格：

齐全

价格：

合理

材料：

保证

Characteristics of materials
- Steel is high-hardenability high-nickel steel and high-alloy high-quality carburized steel. This steel has high strength, toughness and good hardenability. After carburization and quenching, the surface hardness and wear resistance are very high, and the core has high toughness.
- The steel has average processability, medium cold deformation plasticity, white spot sensitivity and temper brittleness, and poor weldability. It needs to be preheated before welding, and it is also suitable for use in the quenched and tempered state.
- This steel can be made into molds using both cold extrusion forming and cutting methods. Carburizing or carbonitriding followed by quenching can improve the hardness and wear resistance of the mold surface.
- Chemical composition
- According to the standard
B/3~
-, the chemical composition (mass fraction) of the steel:
~
-,< br/>~.3
- ,
3~
- ,
~
- ,
3.~3
- ,< br/> -
3
-,
-
3
-.
- Reference corresponding grades
- Japan
- Standard grades
-, United States
- Standard grades
-, France
- Standard grades< br/>-, China
- standard grade
-, UK
- standard grade
-, International Organization for Standardization (
-) standard grade
- .
- Critical point temperature (approximate value)

- ℃,
3
- ℃,
r
- ℃,
r3
- ℃
- Thermal processing specifications
- Heating temperature
- ℃, starting temperature
~
- ℃, ending temperature
~
-℃, slow cooling after hot processing.
- Annealing specifications
- Annealing temperature
~
- ℃, furnace cooling, hardness
-.
- Normalizing specifications
- Normalizing temperature
~
- ℃, air cooling after exiting the furnace.
- High Temperature Tempering Specifications
- Tempering Temperature
~
- ℃, air cooling.
- Quenching and tempering temperature
- Quenching temperature
~
- ℃, oil cooling, tempering temperature as required
~
- ℃.
- Specifications for carburizing, quenching and tempering
- Carburizing temperature
~
- ℃ (cooling in the tank), carburizing time depends on the thickness of the carburized layer.
- Quenching heating temperature
~
- ℃, oil cooling, hardness
-.
- Tempering temperature
~
- ℃, air cooling, surface hardness
-.
- Carbonitriding, quenching and tempering specifications
- Carbonitriding temperature
~
- ℃, oil quenching directly after coming out of the furnace, hardness
-. Tempering temperature
~
- ℃, air cooling, hardness
-.
- Typical application examples
- Suitable for making large neutral plastic molds.