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ASTM A588 Grade A (K11430) HSLA Steel

Alloy Steels

OverviewChemical CompositionMechanical PropertiesPhysical PropertiesOther Properties

Property Overview

Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength550MPa
Yield Strength390MPa
Brinell Hardness170HB
Maximum Service Temperature410°C
Weight Calculator

Chemical Composition

C
0 to 0.19%
CR
0.4 to 0.65%
NI
0 to 0.4%
MN
0.8 to 1.5%
SI
0.3 to 0.65%
P
0 to 0.040%
S
0 to 0.050%
CU
0.25 to 0.4%
V
0.020 to 0.1%
FE
96 to 98.2%

Mechanical

Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
22 %
Fatigue Strength
270 MPa
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Shear Strength
350 MPa
Tensile Strength: Ultimate (UTS)
550 MPa
Tensile Strength: Yield (Proof)
390 MPa

Hardness

Brinell Hardness
170

Physical

Density
7.8 g/cm 3

Thermal

Latent Heat of Fusion
260 J/g
Maximum Temperature: Mechanical
410 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
44 W/m-K
Thermal Diffusivity
12 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
16 points

Electrical

Electrical Conductivity: Equal Volume
7.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.5 % IACS

Calculated

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

Environmental

Base Metal Price
2.3 % relative
Embodied Carbon
1.6 kg CO 2 /kg material
Embodied Energy
22 MJ/kg
Embodied Energy
22 MJ/kg 9.3 x 10 3 BTU/lb
Embodied Water
51 L/kg
Embodied Water
51 L/kg 6.0 gal/lb
Registered Designations & Aliases
ASTM A588 Grade A (K11430) HSLA SteelK11430
Standards

ASTM A588 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

ASTM A588 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 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