# ASTM A588 HSLA Steel

ASTM A588 steel is an alloy steel formulated for primary forming into wrought products. It can have a moderately low base cost among the wrought alloy steels in the same category in the database.

The properties of ASTM A588 steel include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare ASTM A588 steel to: wrought alloy steels in the same category (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

170

Elastic (Young's, Tensile) Modulus

190 *GPa* 27 *x 10 ^{6} psi*

Elongation at Break

22 *%*

Fatigue Strength

270 *MPa* 40 *x 10 ^{3} psi*

Poisson's Ratio

0.29

Shear Modulus

73 *GPa* 11 *x 10 ^{6} psi*

Shear Strength

350 *MPa* 51 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

550 *MPa* 80 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

390 *MPa* 56 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

250 to 260 *J/g*

Maximum Temperature: Mechanical

410 *°C* 770 *°F*

Melting Completion (Liquidus)

1460 *°C* 2650 to 2660 *°F*

Melting Onset (Solidus)

1410 to 1420 *°C* 2580 *°F*

Specific Heat Capacity

470 *J/kg-K* 0.11 *BTU/lb-°F*

Thermal Conductivity

43 to 44 *W/m-K* 25 *BTU/h-ft-°F*

Thermal Expansion

13 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

7.4 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

8.5 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

2.3 to 2.5 *% relative*

Density

7.8 *g/cm ^{3}* 490

*lb/ft*

^{3}Embodied Carbon

1.5 to 1.6 *kg CO _{2}/kg material*

Embodied Energy

20 to 22 *MJ/kg* 8.5 to 9.3 *x 10 ^{3} BTU/lb*

Embodied Water

50 to 51 *L/kg* 6.0 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

110 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

400 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

24 *points*

Strength to Weight: Axial

20 *points*

Strength to Weight: Bending

19 *points*

Thermal Diffusivity

12 *mm ^{2}/s*

Thermal Shock Resistance

16 *points*

## Followup Questions

## Further Reading

ASTM A588: Standard Specification for High-Strength Low-Alloy Structural Steel, up to 50 ksi [345 MPa] Minimum Yield Point, with Atmospheric Corrosion Resistance

ASTM A588: Standard Specification for High-Strength Low-Alloy Structural Steel with 50 ksi (345 MPa) Minimum Yield Point to 4 in (100 mm) Thick

Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993

Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005

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

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