ASTM A656/A656M Type3 Grade 60 Introduce
ASTM A656/A656M is available in four grades: 50, 60, 70 and 80 (most popular) and 100 with the construction industry often using the materials for structural applications. The symbol A denotes that the material is structural steel. Following it, the number marks the yield strength of the material. A typical application for the ASTM A656/A656M Type3 Grade 60 is in bridges, buildings, and other construction structures where weight savings and improved formability is critical. It is also used for food processing and handling equipment, marine equipment, and other industrial applications.
Smelting temperature:1826°C - 1696°C
Application:High-strength low-alloy hot-rolled structural steel plate with improved forgeability
ASTM A656/A656M Type3 Grade 60 Material Chemical Composition
The chemical composition of the ASTM A656/A656M Type3 Grade 60 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | - | 0.1800 |
| Manganese (Mn) | - | 1.6500 |
| PhOsphorus (P) | - | 0.0250 |
| Sulfur (S) | - | 0.0300 |
| Silicon (Si) | - | 0.6000 |
| Vanadium (V) | - | 0.0800 |
| Nitrogen (N) | - | 0.0300 |
| Niobium (Nb) | 0.0080 | 0.1000 |
| Sulfur (S) | - | 0.0350 |
ASTM A656/A656M Type3 Grade 60 Material Mechanical Properties
Yield strength is an indication of a material's ability to resist deformation when subject to an applied stress. Yield strength, measured in ksi, is one of the most important properties of ASTM A656/A656M Type3 Grade 60 steel. It is the stress at which a piece of the material will no longer continue to elongate in length but will instead deform irreversibly. The minimum specified yield strength for ASTM A656/A656M Type3 Grade 60 steel is 50 ksi.
The mechanical properties of the ASTM A656/A656M Type3 Grade 60 steel are as follows:
| YieldRp0.2 | ≤ 472 (MPa) |
| TeileRm | ≤ 545 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 333 |
ASTM A656/A656M Type3 Grade 60 Material Thermal Properties
The thermal performance parameters of the ASTM A656/A656M Type3 Grade 60 steel are as follows:
| Temperature (°C) | 42 | 621 | 281 |
| Modulus of elasticity (GPa) | - | 592 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 13.2 |
| Specific thermal capacity (J/kg·°C) | - | 331 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.33 | - | - |
| Deity (kg/dm³) | - | - | 432 |
| Poisson’s coefficient, ν | - | - | 113 |
ASTM A656/A656M Type3 Grade 60 Material Machining Technology
The cutting parameters for machining ASTM A656/A656M Type3 Grade 60 steel should be optimized for the specific application, based on the tool material and geometry being used. Generally, cutting speed should be kept between 30 and 100 m/min, and feed rate should range from 0.05 to 0.4 mm/tooth. These parameters should be adjusted depending on the type of operation being performed.