ASTM A29/A29M 1038 Introduce
ASTM A29/A29M 1038 steel is a popular material choice among machine manufacturers due to its relative strength and ductility. It is an alloy of carbon and iron, and it has been used in machinery such as transmissions, gears, and bearings for many years. As with all metals, the mechanical properties of ASTM A29/A29M 1038 steel depend on various factors, including composition, heat treatment, and other environmental conditions.
Smelting temperature:1488°C - 1939°C
Application:Hot forged and cold worked carbon steel and alloy steel rods
ASTM A29/A29M 1038 Material Chemical Composition
The chemical composition of the ASTM A29/A29M 1038 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Sulfur (S) | - | 0.0500 |
| PhOsphorus (P) | - | 0.0400 |
| Manganese (Mn) | 0.6000 | 0.9000 |
| Copper (Cu) | 0.2000 | - |
| Carbon (C) | 0.3500 | 0.4200 |
ASTM A29/A29M 1038 Material Mechanical Properties
ASTM A29/A29M 1038 steel also has good corrosion resistance. This corrosion resistance is due to the alloy's chromium content, which helps to form a thin protective layer on the steel's surface. This layer helps to prevent corrosion and can increase the life of the steel.
The mechanical properties of the ASTM A29/A29M 1038 steel are as follows:
| YieldRp0.2 | ≤ 212 (MPa) |
| TeileRm | ≤ 657 (MPa) |
| ImpactKV/Ku | 21(J) |
| ElongationA | 42% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 212 |
ASTM A29/A29M 1038 Material Thermal Properties
The thermal performance parameters of the ASTM A29/A29M 1038 steel are as follows:
| Temperature (°C) | 14 | 345 | 574 |
| Modulus of elasticity (GPa) | - | 276 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 23.3 | 13.2 |
| Specific thermal capacity (J/kg·°C) | - | 132 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 334 |
| Poisson’s coefficient, ν | - | - | 211 |
ASTM A29/A29M 1038 Material Machining Technology
When machining ASTM A29/A29M 1038 steel, the cutting parameters must be set correctly in order to ensure satisfactory results. The cutting speed is usually between 20 to 50 meters/minute (760 to 1,967 feet/minute). The feed rate should usually be between 0.05 and 0.2 millimeters/revolution (0.002 to 0.007 in/rev). The cutting depth will depend on the tool being used, but typically ranges between 2 to 5 millimeters (0.078 to 0.19 in).