18Ni140 mold steel

规格：

齐全

价格：

合理

材料：

保证

Characteristics of materials
- Steel belongs to low carbon maraging steel and age hardening plastic mold steel. The yield strength of steel is
-, abbreviated as
- grade, which corresponds to foreign
- grade. The mass fraction of maraging steel is very low (about
3
-), and the purpose is to improve the toughness of the steel. This steel has the advantages of high yield-to-strength ratio, good processability and weldability, and simple heat treatment process. However, due to the high content of precious metal elements such as
- and
-, they are expensive and are rarely used in China.
- The alloying elements that play the role of age hardening in maraging steel are titanium, aluminum, cobalt, and molybdenum. The main function of adding a large amount of nickel to
- is first to ensure that a single martensite can be obtained after quenching the solid solution, and secondly to form an aging strengthening ratio
3< br/>,
- The mass fraction of nickel above
can also increase the fracture heat of maraging steel.
- Chemical composition
- The main chemical composition (mass fraction) of the steel:
~
-,
~
-,
3. ~3
-,
~
-,
~
-.
- Heat treatment specifications
- Solution treatment temperature (
-
-) ℃, solution time
-, air cooling, aging temperature (
- < br/> - )℃, aging time
- , air cooling.
- Mechanical properties: Yield strength
3~
-, Tensile strength
~
-, Elongation
~
-, Area shrinkage
~
-, hardness
~
-.
- Typical application examples
-) Mainly used for precision forging dies.
-) Make high-precision, super-mirror-surface, complex cavity, large-section, mass-produced plastic molds.