SAE J403 AISI 1042 Introduce
SAE J403 AISI 1042 steel is most commonly used in automotive and aerospace applications. Its high tensile strength makes it well-suited for parts that require strength and durability, such as engine components, shock absorbers, and torsion bars. Additionally, its good ductility allows for its use in components that are exposed to variable load conditions and stresses, such as connecting rods and fasteners.
Smelting temperature:1743°C - 1458°C
Application:Chemical Compositions of SAE Carbon Steels
SAE J403 AISI 1042 Material Mechanical Properties
SAE J403 AISI 1042 steel is characterized by having good strength and hardness properties. The material has an ultimate tensile strength of 545–620 MPa, a yield strength of 340–470 MPa, and an elongation of 18–30%. The material is also relatively ductile, with a bending strength of 45–90 MPa. The mechanical properties of SAE J403 AISI 1042 steel can be improved through heat treatment processes. Annealing can increase ductility, normalizing can improve the strength, and stress relieving can reduce the internal stresses.
The mechanical properties of the SAE J403 AISI 1042 steel are as follows:
| YieldRp0.2 | ≤ 947 (MPa) |
| TeileRm | ≤ 562 (MPa) |
| ImpactKV/Ku | 13(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 432 |
SAE J403 AISI 1042 Material Thermal Properties
The thermal performance parameters of the SAE J403 AISI 1042 steel are as follows:
| Temperature (°C) | 21 | 277 | 362 |
| Modulus of elasticity (GPa) | - | 648 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 314 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.23 | - | - |
| Deity (kg/dm³) | - | - | 413 |
| Poisson’s coefficient, ν | - | - | 314 |
SAE J403 AISI 1042 Material Machining Technology
Due to its high strength and machinability, SAE J403 AISI 1042 steel can be machined with a variety of tools and machines. The most common machining techniques used on this type of steel are turning, milling, drilling, and grinding. Turning is used to cut hard materials such as stainless steel and can be performed using a lathe or CNC machine. Milling is used to shape and create holes in the material, and can be done using a CNC machine or a manual mill. Drilling is used to create holes in the steel, and can be done using a drill press or hand drill. Finally, grinding is used to produce a smooth finish and remove excess material, and can be done using a large bench grinder or a dedicated grinding machine.