ASTM A678 Steel Properties

The below table outlines the material properties for ASTM A678 material including the young's modulus, yield strength, ultimate strength and other relevant mechanical properties required for structural and mechanical design.

Grade A

Standard

Grade B

Standard

Grade C

Standard
Plate Thickness 19-38mm
Plate thickness 38-51mm

Grade D

Standard

ASTM A678 Young's Modulus

The Young's Modulus of ASTM A678 is 200,000 MPa.

ASTM A678 Ultimate Strength

The Ultimate Strength of ASTM A678 ranges between 553 and 690 MPa.

ASTM A678 Yield Strength

The Yield Strength of ASTM A678 ranges between 345 and 515 MPa depending on the material grade. See the below tables to get your specific material grade material strength.

Grade A 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	200,000 MPa	7,800 kg/m³	553 MPa	345 MPa	12 1/°C	0.29
Imperial	29,000 ksi	487 lb/ft³	80 ksi	50 ksi	6.67 1/°F	0.29

Grade B 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	200,000 MPa	7,800 kg/m³	620 MPa	415 MPa	12 1/°C	0.29
Imperial	29,000 ksi	487 lb/ft³	90 ksi	60 ksi	6.67 1/°F	0.29

Grade C 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	200,000 MPa	7,800 kg/m³	689 MPa	450 MPa	12 1/°C	0.29
Imperial	29,000 ksi	487 lb/ft³	100 ksi	65 ksi	6.67 1/°F	0.29

Plate Thickness 19-38mm 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	200,000 MPa	7,800 kg/m³	690 MPa	485 MPa	12 1/°C	0.29
Imperial	29,000 ksi	487 lb/ft³	100 ksi	70 ksi	6.67 1/°F	0.29

Plate thickness 38-51mm 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	200,000 MPa	7,800 kg/m³	655 MPa	450 MPa	12 1/°C	0.29
Imperial	29,000 ksi	487 lb/ft³	95 ksi	65 ksi	6.67 1/°F	0.29

Grade D 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	200,000 MPa	7,800 kg/m³	690 MPa	515 MPa	12 1/°C	0.29
Imperial	29,000 ksi	487 lb/ft³	100 ksi	75 ksi	6.67 1/°F	0.29

ASTM A662 Steel Properties ASTM A699 Steel Properties