ASTM A314 Grade 309S Introduce

ASTM A314 Grade 309S is a type of stainless steel that is commonly used for making piping systems, tubes, and plates for use in liquid service applications. It is an austenitic stainless steel grade which provides good welding properties and is easilycorroded and formed. Additionally, the grade is also resistant to oxidation and scaling, as well as possessing good strength and hardness properties. ASTM A314 Grade 309S is a non-magnetic steel that can be heat treated for better formability and strength. It may also be cold worked, annealed, and polished to achieve a desired workability. The grade is also readily machinable and can be cut, drilled, and stamped easily. It can also be arc welded with a suitable filler material for applications that require high strength and toughness.

Smelting temperature:1481°C - 1219°C

Application:Specification for stainless steel and steel rods for forging and heat

ASTM A314 Grade 309S Material Mechanical Properties

The mechanical properties of the ASTM A314 Grade 309S steel are as follows:

YieldRp0.2 ≤ 148 (MPa)
TeileRm≤ 449 (MPa)
ImpactKV/Ku33(J)
ElongationA22%
Reduction in cross section on fractureZ34%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)421

ASTM A314 Grade 309S Material Thermal Properties

The thermal performance parameters of the ASTM A314 Grade 309S steel are as follows:

Temperature (°C)43346789
Modulus of elasticity (GPa)-784-
Mean coefficient of thermal expaion ×10-6/(°C)--31
Thermal conductivity (W/m·°C)-32.334.2
Specific thermal capacity (J/kg·°C)-243-
Specific electrical resistivity (Ω mm²/m)0.13--
Deity (kg/dm³)--342
Poisson’s coefficient, ν--123