SAE J403 AISI 11L18 Introduce
SAE J403 AISI 11L18 steel is an alloy containing carbon and a wide range of other elements, primarily iron and manganese. It is typically used in automotive and aerospace applications and is renowned for its strength and durability. SAE J403 AISI 11L18 steel has a density of 7.87 g/cm3, a melting point of 1450°C, and a tensile strength of 440-590 MPa. It is known for its high yield strength, which allows it to be machined, welded, and formed easily. SAE J403 AISI 11L18 steel also exhibits good ductility, making it an excellent choice for highly-stressed applications where impact loads are a concern.
Smelting temperature:1531°C - 1839°C
Application:Chemical Compositions of SAE Carbon Steels
SAE J403 AISI 11L18 Material Mechanical Properties
The low alloy content creates a material with moderate strength and a relatively low carbon content. This makes SAE J403 AISI 11L18 typical steel relatively easy to work with and resistant to corrosion. Heat treatment is an important process for SAE J403 AISI 11L18 steel. Through the use of heat treatment, the microstructure and properties of the material can be altered to suit specific applications.
The mechanical properties of the SAE J403 AISI 11L18 steel are as follows:
| YieldRp0.2 | ≤ 971 (MPa) |
| TeileRm | ≤ 874 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 42% |
| Reduction in cross section on fractureZ | 31% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 132 |
SAE J403 AISI 11L18 Material Thermal Properties
The thermal performance parameters of the SAE J403 AISI 11L18 steel are as follows:
| Temperature (°C) | 34 | 373 | 197 |
| Modulus of elasticity (GPa) | - | 453 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 31.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 411 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 444 |
| Poisson’s coefficient, ν | - | - | 124 |
SAE J403 AISI 11L18 Material Machining Technology
The chemical composition of SAE J403 AISI 11L18 steel makes it ideal for machining. This type of steel is known for its high strength and hardness, making it resistant to wear and impact. Additionally, it has good machinability, meaning that it is easy to cut and form using tools and machines. SAE J403 AISI 11L18 steel also has an excellent balance between ductility and strength, allowing for a wide range of fabrication processes and finishes.