ASTM SA-36

ASTM SA-36 Grade Introduction:

ASTM SA-36 is the most commonly used mild and hot-rolled steel. It has excellent welding properties and is suitable for grinding, punching, tapping, drilling, and machining processes. The yield strength of ASTM SA36 is less than that of cold roll C1018, thus enabling ASTM SA36 to bend more readily than C1018. Normally, larger diameters in ASTM SA36 are not produced since C1018 hot roll rounds are used.

ASTM SA-36 Grade Application:

  • It is used in bolted, riveted or welded construction of bridges, buildings and oil rigs.
  • It is used in forming tanks, bins, bearing plates, fixtures, rings, templates, jigs, sprockets, cams, gears, base plates, forgings, ornamental works, stakes, brackets, automotive and agricultural equipment, frames, machinery parts.
  • It is used for various parts obtained by flame cutting such as in parking garages, walkways, boat landing ramps and trenches.

ASTM SA-36 Equivalent Grades:

Internal Standard IS 2062 GR E250 E350 E410 AND E450 A / B / BO / BR A36

ASTM SA-36 Chemical Composition:

Elements C Cu Fe Mn P Si S
Content (%) 0.25-0.29 0.20 98.0 1.03 0.040 0.280 0.050

Mechanical Properties:

Property Metric Imperial
Tensile Strength, Ultimate 400 – 550 MPa 58000 – 79800 psi
Tensile Strength, Yield 250 MPa 36300 psi
Elongation at Break (in 200 mm) 20.0 % 20.0 %
Elongation at Break (in 50 mm) 23.0 % 23.0 %
Modulus of Elasticity 200 GPa 29000 ksi
Bulk Modulus (typical for steel) 140 GPa 20300 ksi
Poisson's Ratio 0.260 0.260
Shear Modulus 79.3 GPa 11500 ksi

Physical Properties:

Property Metric Imperial
Density 7.85 g/cm³ 0.284 lb/in³

Thermal Properties:

Property Metric
Thermal Conductivity 50 – 42 W/m·K
Thermal Expansion 11 to 13 µm/m-K

Forging Properties:

Preheat slowly, then increase the temperature more rapidly to forging temperature. Then cool slowly

Stress Relieving:

Stress relieving at 677°C – 927°C(1250°F-1700°F)

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