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ASTM A283 Grade A Carbon Steel

ASTM A283 grade A is a type of ASTM A283 carbon steel. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. It has the lowest strength and highest ductility compared to the other variants of ASTM A283 carbon steel.

The graph bars on the material properties cards below compare ASTM A283 grade A to: wrought carbon or non-alloy steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Brinell Hardness

110

Elastic (Young's, Tensile) Modulus

190 GPa 27 x 106 psi

Elongation at Break

34 %

Fatigue Strength

150 MPa 21 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

73 GPa 11 x 106 psi

Shear Strength

240 MPa 35 x 103 psi

Tensile Strength: Ultimate (UTS)

360 MPa 53 x 103 psi

Tensile Strength: Yield (Proof)

180 MPa 27 x 103 psi

Thermal Properties

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

400 °C 750 °F

Melting Completion (Liquidus)

1460 °C 2670 °F

Melting Onset (Solidus)

1420 °C 2590 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

53 W/m-K 31 BTU/h-ft-°F

Thermal Expansion

12 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.1 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.1 % IACS

Otherwise Unclassified Properties

Base Metal Price

1.8 % relative

Density

7.9 g/cm3 490 lb/ft3

Embodied Carbon

1.4 kg CO2/kg material

Embodied Energy

18 MJ/kg 7.9 x 103 BTU/lb

Embodied Water

46 L/kg 5.4 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

100 MJ/m3

Resilience: Unit (Modulus of Resilience)

91 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

13 points

Strength to Weight: Bending

14 points

Thermal Diffusivity

14 mm2/s

Thermal Shock Resistance

11 points

Alloy Composition

Iron (Fe)Fe 98.3 to 100
Manganese (Mn)Mn 0 to 0.9
Silicon (Si)Si 0 to 0.4
Copper (Cu)Cu 0 to 0.2
Carbon (C)C 0 to 0.14
Sulfur (S)S 0 to 0.040
Phosphorus (P)P 0 to 0.035

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM A283: Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates

Carbon Steel Handbook, D. Gandy, 2007

ASM Specialty Handbook: Carbon and Alloy Steels, J. R. Davis (editor), 1996

Ferrous Materials: Steel and Cast Iron, Hans Berns and Werner Theisen, 2008

Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015