ASTM A537/A537M A537 Class 3 Introduce
ASTM A537/A537M A537 Class 3 is a type of low-alloy steel that is specifically designed for use in pressure vessel applications. The alloy is used in moderate and lower temperatures, and has superior strength and corrosion resistance compared to other steel alloys. As a normalized or quenched and tempered steel, ASTM A537/A537M A537 Class 3 is a higher strength steel, which can be used in many applications requiring higher strength.
Smelting temperature:1936°C - 1972°C
Application:Heat treated carbon-manganese-silicon steel sheet for pressure vessels
ASTM A537/A537M A537 Class 3 Material Mechanical Properties
Yield strength is another mechanical property of ASTM A537/A537M A537 Class 3 steel, which is the amount of stress a material can withstand before it starts to deform permanently. The yield strength depends on the class of the steel; for ASTM A537/A537M A537 Class 3 Class 1 steel it ranges from 345MPa to 690MPa, for Class 2 it ranges from 415MPa to 690MPa, and for Class 3 it ranges from 415MPa to 660MPa. This range of yield strength makes it ideal for applications which require a high level of resistance, such as pressure vessels and boilers.
The mechanical properties of the ASTM A537/A537M A537 Class 3 steel are as follows:
| YieldRp0.2 | ≤ 336 (MPa) |
| TeileRm | ≤ 154 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 41% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 312 |
ASTM A537/A537M A537 Class 3 Material Thermal Properties
The thermal performance parameters of the ASTM A537/A537M A537 Class 3 steel are as follows:
| Temperature (°C) | 41 | 671 | 687 |
| Modulus of elasticity (GPa) | - | 851 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 432 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 224 |
| Poisson’s coefficient, ν | - | - | 334 |
ASTM A537/A537M A537 Class 3 Material Machining Technology
ASTM A537/A537M A537 Class 3 is a high-strength steel grade that is well suited to machining operations. It offers an exceptional combination of strength, toughness, ductility, and fatigue resistance, making it an excellent choice for many machining and fabrication applications. This steel is also used in the construction and fabrication of many products, including pressure vessels, due to its capability to withstand extreme pressures. The machining process for this steel requires the correct tools, coolants, and cutting oils, but the end result is a well-machined part with a precise finish and excellent strength and durability.