ASTM A572/A572M A572 Grade 42 Type 2 Introduce
Steel is one of the oldest and most common materials used in construction and engineering. Its strength and durability make it an ideal choice for projects that require structural stability. ASTM A572/A572M A572 Grade 42 Type 2 steel is one type of steel that has been developed to meet modern construction requirements. It is a low-alloy, high-strength steel and has excellent thermal properties.
Smelting temperature:1753°C - 1317°C
Application:Technical specification for high strength low alloy cobalt vanadium structural steel
ASTM A572/A572M A572 Grade 42 Type 2 Material Chemical Composition
The chemical composition of the ASTM A572/A572M A572 Grade 42 Type 2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| (V+Nb) | 0.0200 | 0.1500 |
| Vanadium (V) | 0.0100 | 0.1500 |
| Silicon (Si) | - | 0.4000 |
| Sulfur (S) | - | 0.0500 |
| PhOsphorus (P) | - | 0.0400 |
| Niobium (Nb) | 0.0050 | 0.0500 |
| Manganese (Mn) | - | 1.3500 |
| Copper (Cu) | 0.2000 | - |
| Carbon (C) | - | 0.2100 |
ASTM A572/A572M A572 Grade 42 Type 2 Material Mechanical Properties
ASTM A572/A572M A572 Grade 42 Type 2 steel is an alloy of iron, carbon, manganese, silicon, phosphorous, and sulfur that has many beneficial mechanical properties. Its yield and tensile strength, Brinell hardness, and ductility are all above average and make this steel suitable for a variety of construction applications. Additionally, its excellent weldability makes it easy to weld using a number of methods. Therefore, ASTM A572/A572M A572 Grade 42 Type 2 steel is a popular choice for many designs and construction projects.
The mechanical properties of the ASTM A572/A572M A572 Grade 42 Type 2 steel are as follows:
| YieldRp0.2 | ≤ 433 (MPa) |
| TeileRm | ≤ 873 (MPa) |
| ImpactKV/Ku | 31(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 21% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 234 |
ASTM A572/A572M A572 Grade 42 Type 2 Material Thermal Properties
The thermal performance parameters of the ASTM A572/A572M A572 Grade 42 Type 2 steel are as follows:
| Temperature (°C) | 14 | 717 | 361 |
| Modulus of elasticity (GPa) | - | 673 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 44.2 |
| Specific thermal capacity (J/kg·°C) | - | 331 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 431 |
| Poisson’s coefficient, ν | - | - | 224 |
ASTM A572/A572M A572 Grade 42 Type 2 Material Machining Technology
One of the main advantages of ASTM A572/A572M A572 Grade 42 Type 2 steel is its excellent weldability. This steel can be welded using a variety of welding processes, including shielded metal arc welding (SMAW), gas tungsten arc welding (GTAW), and flux-cored arc welding (FCAW). Additionally, this steel is relatively easy to weld, as it only requires preheating for highly restrained joints. The mechanical properties of the welds are also good due to the low carbon and manganese content of this steel.