ASTM A29/A29M A29 1215 Introduce
ASTM A29/A29M A29 1215 is a steel specification that covers both alloy and carbon steel grade bars. It is one of the oldest and most preeminent standards for steel bar quality and is widely accepted worldwide in many different industries. The ASTM A29/A29M standard embodies the best of alloy steel qualities, and its detailed, testing and documentation requirements ensure that quality is maintained across the spectrum of usage.
Smelting temperature:1477°C - 1957°C
Application:Hot forged and cold worked carbon steel and alloy steel rods
ASTM A29/A29M A29 1215 Material Mechanical Properties
Tensile strength is the maximum stress that a material can withstand without failure or permanent deformation. ASTM A29/A29M A29 1215 steel typically has a tensile strength between 400 and 600 MPa, depending on the grade of steel and the heat treatment.
The mechanical properties of the ASTM A29/A29M A29 1215 steel are as follows:
| YieldRp0.2 | ≤ 851 (MPa) |
| TeileRm | ≤ 433 (MPa) |
| ImpactKV/Ku | 13(J) |
| ElongationA | 42% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 413 |
ASTM A29/A29M A29 1215 Material Thermal Properties
The thermal performance parameters of the ASTM A29/A29M A29 1215 steel are as follows:
| Temperature (°C) | 32 | 921 | 939 |
| Modulus of elasticity (GPa) | - | 362 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 14 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 42.2 |
| Specific thermal capacity (J/kg·°C) | - | 332 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.23 | - | - |
| Deity (kg/dm³) | - | - | 431 |
| Poisson’s coefficient, ν | - | - | 422 |
ASTM A29/A29M A29 1215 Material Machining Technology
When machining ASTM A29/A29M A29 1215 steel, it is important to select the correct tooling for the job. High speed steel (HSS) and cobalt steel tools are the most commonly used for these materials. HSS tools that have been coated with titanium aluminum nitride (TiAlN) offer the best combination of cutting performance and tool wear resistance. For some operations, special-purpose cutting tools may be necessary in order to obtain the desired machining performance.