ASTM A684/A684M 1064 Introduce
ASTM A684/A684M 1064 is a high-strength, low-alloy steel plate which is popularly used in applications ranging from transportation to construction, oil and gas, manufacturing, chemical and power plants. This steel plate has excellent mechanical properties, making it ideal for the oil and gas, automotive and aerospace industries. It is also easy to form and weld and offers excellent resistance to abrasion. It should be noted that proper welding and/or heat treatment process should be used when working with ASTM A684/A684M 1064 and approved welding procedures should be used.
Smelting temperature:1142°C - 1737°C
Application:Cold rolled high carbon steel strip
ASTM A684/A684M 1064 Material Chemical Composition
The chemical composition of the ASTM A684/A684M 1064 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | 0.5900 | 0.7000 |
| Manganese (Mn) | 0.5000 | 0.8000 |
| PhOsphorus (P) | - | 0.0300 |
| Sulfur (S) | - | 0.0350 |
| Silicon (Si) | 0.1500 | 0.3000 |
| Nickel (Ni) | - | 0.3000 |
| Chromium (Cr) | - | 0.2500 |
| Molybdenum (Mo) | - | 0.1000 |
| Copper (Cu) | - | 0.3000 |
| (Cr+Ni+Cu+Mo) | - | 0.8000 |
| Silicon (Si) | 0.1500 | 0.3000 |
| Nickel (Ni) | - | 0.3000 |
| Molybdenum (Mo) | - | 0.1000 |
| Copper (Cu) | - | 0.3000 |
| Chromium (Cr) | - | 0.2500 |
ASTM A684/A684M 1064 Material Mechanical Properties
ASTM A684/A684M 1064 steel is highly weldable, which means it can be joined easily with other pieces of steel to make strong and durable connections. Its weldability is mainly attributed to its low carbon content, as carbon is known to reduce weldability. The steel is also resistant to cracking and has excellent tensile strength, making it a great choice for welded structures.
The mechanical properties of the ASTM A684/A684M 1064 steel are as follows:
| YieldRp0.2 | ≤ 747 (MPa) |
| TeileRm | ≤ 162 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 311 |
ASTM A684/A684M 1064 Material Thermal Properties
The thermal performance parameters of the ASTM A684/A684M 1064 steel are as follows:
| Temperature (°C) | 33 | 796 | 776 |
| Modulus of elasticity (GPa) | - | 766 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 14 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 32.2 |
| Specific thermal capacity (J/kg·°C) | - | 141 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.43 | - | - |
| Deity (kg/dm³) | - | - | 434 |
| Poisson’s coefficient, ν | - | - | 322 |
ASTM A684/A684M 1064 Material Machining Technology
Due to its combination of excellent mechanical properties, ASTM A684/A684M 1064 steel is often used in applications where strength, formability, and machinability are essential. The steel is often used in bridge components, such as girders and beams, vehicle frames, guardrails, and crane booms. The steel is also often used in tilting chassis, used in applications such as forklifts and cranes, due to its high strength and formability. The steel also has good machinability, allowing it to be efficiently cut and drilled for fabrication.