ASTM A29/A29M A29 4137 Introduce
ASTM A29/A29M A29 4137 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:1659°C - 1229°C
Application:Hot forged and cold worked carbon steel and alloy steel rods
ASTM A29/A29M A29 4137 Material Chemical Composition
The chemical composition of the ASTM A29/A29M A29 4137 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Molybdenum (Mo) | 0.1500 | 0.2500 |
| Chromium (Cr) | 0.8000 | 1.1000 |
| PhOsphorus (P) | - | 0.0350 |
| Sulfur (S) | - | 0.0400 |
| Manganese (Mn) | 0.7000 | 0.9000 |
| Silicon (Si) | 0.1500 | 0.3500 |
| Carbon (C) | 0.3500 | 0.4000 |
| Silicon (Si) | 0.1500 | 0.3500 |
| Nickel (Ni) | - | 0.2500 |
| Copper (Cu) | - | 0.3500 |
ASTM A29/A29M A29 4137 Material Mechanical Properties
Tensile strength is the maximum stress that a material can withstand without failure or permanent deformation. ASTM A29/A29M A29 4137 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 4137 steel are as follows:
| YieldRp0.2 | ≤ 797 (MPa) |
| TeileRm | ≤ 788 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 41% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 333 |
ASTM A29/A29M A29 4137 Material Thermal Properties
The thermal performance parameters of the ASTM A29/A29M A29 4137 steel are as follows:
| Temperature (°C) | 31 | 341 | 427 |
| Modulus of elasticity (GPa) | - | 335 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 44.2 |
| Specific thermal capacity (J/kg·°C) | - | 214 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 342 |
| Poisson’s coefficient, ν | - | - | 434 |
ASTM A29/A29M A29 4137 Material Machining Technology
ASTM A29/A29M A29 4137 steel is a versatile, heat-treatable alloy steel that is used in a variety of industries for many different applications. The machining of ASTM A29/A29M A29 4137 steel requires the use of the correct tools and cutting strategies to ensure that the part meets the customer's requirements. High speed steel and cobalt steel tools with TiAlN coating are generally the best choice for machining ASTM A29/A29M A29 4137 steel. The cutting parameters should be set within the recommended range to minimize wear, cutting forces, and heat generation in the cutting zone. The correct use of cutting fluid can further improve machining performance and tool life.