ASTM A517/A517M A517 Grade S Introduce
ASTM A517/A517M A517 Grade S steel is particularly well suited for use in low temperature environments, such as cryogenic applications. It offers high strength and improved toughness in these low temperatures. Compared to other high strength low alloy steels (HSLA), ASTM A517/A517M A517 Grade S steel has superior weldability, which makes it well suited for use in pressure vessels and boilers. This steel is also resistant to sulfuric acid and other corrosive environments, making it useful in applications such as chemical processing and petrochemical plants.
Smelting temperature:1217°C - 1745°C
Application:Tempered and quenched high-strength alloy steel sheets for pressure vessels
ASTM A517/A517M A517 Grade S Material Mechanical Properties
ASTM A517/A517M A517 Grade S steel has excellent mechanical properties due to its combination of specified chemical composition and processing controls used during hot-forming and cold-working. The tensile strength of the material is in the range of 115-135 ksi, and its yield strength is in the range of 75-100 ksi. The material also exhibits excellent ductility, with an elongation range of 16-25%, and a reduction of area of 45-55%.
The mechanical properties of the ASTM A517/A517M A517 Grade S steel are as follows:
| YieldRp0.2 | ≤ 179 (MPa) |
| TeileRm | ≤ 785 (MPa) |
| ImpactKV/Ku | 23(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 32% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 321 |
ASTM A517/A517M A517 Grade S Material Thermal Properties
The thermal performance parameters of the ASTM A517/A517M A517 Grade S steel are as follows:
| Temperature (°C) | 44 | 986 | 697 |
| Modulus of elasticity (GPa) | - | 258 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 11 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 431 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 344 |
| Poisson’s coefficient, ν | - | - | 412 |
ASTM A517/A517M A517 Grade S Material Machining Technology
Machining of ASTM A517/A517M A517 Grade S steel can be done with conventional machining methods, but may require greater tooling forces and cutting speeds than those used for conventional grades due to its high hardness. The material is quite difficult to machine and may require multiple clicks and chip breakers.