ASTM A572 GRADE 55 TYPE 2 ASTM A572/A572M
Low-Alloy High-Strength plate steel Product Introduction
ASTM A572 Grade 55 Type 2 ASTM A572/A572M steel is used in a variety of applications, including bridges, buildings, construction equipment, and other structural applications. ASTM A572 Grade 55 Type 2 ASTM A572/A572M steel is also used in road vehicles, railways, cranes, and pressure vessels.
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Application: Technical specification for high strength low alloy cobalt vanadium structural steel.
Heat treated: 1597°C - 1951°C.
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ASTM A572 Grade 55 Type 2 ASTM A572/A572M Chemical Element
The ASTM A572/A572M standard specifies the chemical composition of the steel, including carbon, manganese, phosphorus, sulphur, silicon, chromium, copper, nickel, molybdenum, and other trace elements. The specific chemical composition of the steel will depend on the grade chosen.
What is the chemical composition of ASTM A572 Grade 55 Type 2 ASTM A572/A572M? For ASTM A572 Grade 55 Type 2 ASTM A572/A572M element content, please contact us.
| Element | Min | Max | Similar |
|---|---|---|---|
| V | 0.0100 | 0.1500 | - |
| Si | - | 0.4000 | - |
| S | - | 0.0500 | - |
| P | - | 0.0400 | - |
| Mn | - | 1.3500 | - |
| Cu | 0.2000 | - | - |
| C | - | 0.2500 | - |
ASTM A572 Grade 55 Type 2 ASTM A572/A572M Mechanical Properties
One of the main advantages of ASTM A572 Grade 55 Type 2 ASTM A572/A572M steel is its strength. This steel has a relatively high yield strength and a relatively low weight-to-strength ratio. This makes it ideal for use in a variety of construction applications. In addition, ASTM A572 Grade 55 Type 2 ASTM A572/A572M steel is relatively easy to form and weld.
The yield refers to the transition of ASTM A572 Grade 55 Type 2 ASTM A572/A572M from non-uniform elastic state to elastic-plastic state after reaching a certain deformation stress. It marks the beginning of macro-plastic deformation.
Tensile strength(Rm) refers to the maximum stress that ASTM A572 Grade 55 Type 2 ASTM A572/A572M bears before breaking. When the steel yields to a certain extent, its resistance to deformation increases again due to the rearrangement of internal grains. At this time, although the deformation develops rapidly, it can only increase with the increase of stress until the maximum stress is reached. Thereafter, the ASTM A572 Grade 55 Type 2 ASTM A572/A572M is ability to resist deformation is obviously reduced, and a large plastic deformation occurs at the weakest point, where the section of the specimen shrinks rapidly, leading to necking until fracture. The maximum stress value of ASTM A572 Grade 55 Type 2 ASTM A572/A572M before tensile fracture is called strength limit or tensile strength.
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 185 (≥) | 483 (≥) | 32 | 12 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 133 |
ASTM A572 Grade 55 Type 2 ASTM A572/A572M Physical Properties
Physical properties of ASTM A572 Grade 55 Type 2 ASTM A572/A572M are mainly indicated by modulus of elasticity, thermal conductivity, specific thermal capacity, electrical resistance value, coefficient of thermal expansion, density, poisson's ratio, etc.
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 14 | - | - | 0.34 | - | |||
| 491 | 623 | - | 22.3 | 211 | - | ||
| 875 | - | 33 | 32.2 | 223 | 331 |
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