ASTM A684/A684M 1040 Introduce
ASTM A684/A684M 1040 is a kind of high-strength, low-alloy structural steel plate which is readily weldable, machinable and can be formed. It is a highly alloyed and low carbon steel. ASTM A684/A684M 1040 is used in applications ranging from transportation to construction, oil and gas and manufacturing, chemical and power plants.
Smelting temperature:1187°C - 1198°C
Application:Cold rolled high carbon steel strip
ASTM A684/A684M 1040 Material Chemical Composition
The chemical composition of the ASTM A684/A684M 1040 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | 0.3700 | 0.4400 |
| Manganese (Mn) | 0.6000 | 0.9000 |
| 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 1040 Material Mechanical Properties
ASTM A684/A684M 1040 steel is an alloy of iron, carbon, and other elements. It is typically used in the construction of bridges and other infrastructure. This steel is known for its strength and durability in various environments. It also has excellent chemical properties, making it a popular choice for various applications.
The mechanical properties of the ASTM A684/A684M 1040 steel are as follows:
| YieldRp0.2 | ≤ 124 (MPa) |
| TeileRm | ≤ 472 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 223 |
ASTM A684/A684M 1040 Material Thermal Properties
The thermal performance parameters of the ASTM A684/A684M 1040 steel are as follows:
| Temperature (°C) | 32 | 258 | 664 |
| Modulus of elasticity (GPa) | - | 377 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 14 |
| Thermal conductivity (W/m·°C) | - | 24.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 313 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 124 |
| Poisson’s coefficient, ν | - | - | 441 |
ASTM A684/A684M 1040 Material Machining Technology
ASTM A684/A684M 1040 steel has good mechanical properties, allowing it to be tough, ductile, and machinable and it can be used in a variety of applications. The ultimate tensile strength of the steel is 696MPa, with a yield strength of 485MPa and an elongation of 21%. The steel has a respectable tensile strength which is important for any application where the steel needs to be able to resist a large amount of force. The yield strength of the steel is also good and gives it the ability to resist deformation, while being able to return to its original shape after the force has been applied. The elongation of the steel is also good and allows it to deform without breaking and return to its original shape afterwards.