ASTM A684/A684M 1074 Introduce
ASTM A684/A684M 1074 steel is an alloy of iron, carbon, and other elements. It has excellent chemical properties, including corrosion resistance, high weldability, and good heat treatment properties. It is used in a variety of industries, including construction, automotive, aerospace, and energy.
Smelting temperature:1721°C - 1438°C
Application:Cold rolled high carbon steel strip
ASTM A684/A684M 1074 Material Chemical Composition
The chemical composition of the ASTM A684/A684M 1074 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | 0.7000 | 0.8000 |
| 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 1074 Material Mechanical Properties
One of the major advantages of ASTM A684/A684M 1074 steel is its corrosion resistance. Increased chromium and molybdenum contents make the steel more resistant to corrosion in different environments, including salt water and certain acidic solutions. Chromium forms a protective oxide layer on the surface of the steel, which helps to prevent further corrosion. The nickel content also improves corrosion resistance, making it a great choice for marine applications.
The mechanical properties of the ASTM A684/A684M 1074 steel are as follows:
| YieldRp0.2 | ≤ 326 (MPa) |
| TeileRm | ≤ 395 (MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 12% |
| Reduction in cross section on fractureZ | 42% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 111 |
ASTM A684/A684M 1074 Material Thermal Properties
The thermal performance parameters of the ASTM A684/A684M 1074 steel are as follows:
| Temperature (°C) | 11 | 628 | 262 |
| Modulus of elasticity (GPa) | - | 584 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 42 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 21.2 |
| Specific thermal capacity (J/kg·°C) | - | 131 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.22 | - | - |
| Deity (kg/dm³) | - | - | 443 |
| Poisson’s coefficient, ν | - | - | 213 |
ASTM A684/A684M 1074 Material Machining Technology
Machining is when the shape, size and finish of a material is changed by the application of cutting tools and other manipulations. It is one of the most important processes in modern manufacturing, and at the same time one of the most complex. ASTM A684/A684M 1074 is a type of steel – and more specifically, a carbon steel alloy – that is widely used in many different industries such as automotive, medical and aerospace.