ASTM A709 Steel Properties

The below table outlines the material properties for ASTM A709 material including the young's modulus, yield strength, ultimate strength and other relevant mechanical properties required for structural and mechanical design.

Grade 50

Standard
Thickness ≤ 100 mm
High-strength Low Alloy Steel (HSLA), ≤ 50 mm

Grade 50W

Thickness ≤ 100 mm

Grade 100

Thickness ≤ 64 mm
64mm < Thickness < 100mm

Grade 100W

Thickness ≤ 64 mm
64mm < Thickness < 100mm

Grade 36

Carbon steel bar, Diameter ≤ 200 mm
Carbon steel bar, Diameter > 200 mm
Carbon steel plate > 200mm wide
Carbon steel shapes (634 kg\m)
Carbon steel shapes (≤ 634 kg\m)

ASTM A709 Young's Modulus

The Young's Modulus of ASTM A709 is 29,700 ksi.

ASTM A709 Ultimate Strength

The Ultimate Strength of ASTM A709 ranges between 58 and 120 ksi.

ASTM A709 Yield Strength

The Yield Strength of ASTM A709 ranges between 32 and 100 ksi depending on the material grade. See the below tables to get your specific material grade material strength.

Grade 50 Steel Properties

Standard Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,800 kg/m³	450 MPa	345 MPa	12 1/°C	0.29
Imperial	29,700 ksi	487 lb/ft³	65 ksi	50 ksi	6.67 1/°F	0.29

Thickness ≤ 100 mm Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,850 kg/m³	451 MPa	345 MPa	12 1/°C	0.29
Imperial	29,700 ksi	491 lb/ft³	65 ksi	50 ksi	6.67 1/°F	0.29

High-strength Low Alloy Steel (HSLA), ≤ 50 mm Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,800 kg/m³	450 MPa	345 MPa	12 1/°C	0.29
Imperial	29,700 ksi	487 lb/ft³	65 ksi	50 ksi	6.67 1/°F	0.29

Grade 50W Steel Properties

Thickness ≤ 100 mm Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,850 kg/m³	485 MPa	345 MPa	12 1/°C	0.29
Imperial	29,700 ksi	491 lb/ft³	70 ksi	50 ksi	6.67 1/°F	0.29

Grade 100 Steel Properties

Thickness ≤ 64 mm Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,850 kg/m³	828 MPa	690 MPa	12 1/°C	0.29
Imperial	29,700 ksi	491 lb/ft³	120 ksi	100 ksi	6.67 1/°F	0.29

64mm < Thickness < 100mm Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,850 kg/m³	793 MPa	620 MPa	12 1/°C	0.29
Imperial	29,700 ksi	491 lb/ft³	115 ksi	90 ksi	6.67 1/°F	0.29

Grade 100W Steel Properties

Thickness ≤ 64 mm Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,850 kg/m³	828 MPa	690 MPa	12 1/°C	0.29
Imperial	29,700 ksi	491 lb/ft³	120 ksi	100 ksi	6.67 1/°F	0.29

64mm < Thickness < 100mm Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,850 kg/m³	793 MPa	620 MPa	12 1/°C	0.29
Imperial	29,700 ksi	491 lb/ft³	115 ksi	90 ksi	6.67 1/°F	0.29

Grade 36 Steel Properties

Carbon steel bar, Diameter ≤ 200 mm Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,800 kg/m³	475 MPa	250 MPa	12 1/°C	0.29
Imperial	29,700 ksi	487 lb/ft³	69 ksi	36 ksi	6.67 1/°F	0.29

Carbon steel bar, Diameter > 200 mm Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,800 kg/m³	400 MPa	220 MPa	12 1/°C	0.29
Imperial	29,700 ksi	487 lb/ft³	58 ksi	32 ksi	6.67 1/°F	0.29

Carbon steel plate > 200mm wide Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,800 kg/m³	475 MPa	250 MPa	12 1/°C	0.29
Imperial	29,700 ksi	487 lb/ft³	69 ksi	36 ksi	6.67 1/°F	0.29

Carbon steel shapes (634 kg\m) Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,800 kg/m³	400 MPa	250 MPa	12 1/°C	0.29
Imperial	29,700 ksi	487 lb/ft³	58 ksi	36 ksi	6.67 1/°F	0.29

Carbon steel shapes (≤ 634 kg\m) Material Properties

Unit System	Young's Modulus, E	Density, ρ	Ultimate Strength, F_u	Yield Strength, F_y	Thermal Expansion Coef., α	Poisson's Ratio, ν
Metric	205,000 MPa	7,800 kg/m³	475 MPa	250 MPa	12 1/°C	0.29
Imperial	29,700 ksi	487 lb/ft³	69 ksi	36 ksi	6.67 1/°F	0.29

ASTM A709 Grade 50W Equivalent Material Table

Equivalent Material	European	Germany	Italy	France	Japan
ASTM A709 Grade 50W	S355J0W S355J2W S355K2W	WTST52-3	FE355W	E36W-B3

ASTM A699 Steel Properties ASTM A710 Steel Properties