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SAE-AISI 1144 Steel vs. ASTM A242 HSLA Steel

Both SAE-AISI 1144 steel and ASTM A242 HSLA steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1144 steel and the bottom bar is ASTM A242 HSLA steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
22
Fatigue Strength, MPa 280 to 430
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 460 to 510
310
Tensile Strength: Ultimate (UTS), MPa 750 to 840
490
Tensile Strength: Yield (Proof), MPa 420 to 690
330

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.9
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
18
Embodied Water, L/kg 47
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 110
95
Resilience: Unit (Modulus of Resilience), kJ/m3 480 to 1290
290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 30
17
Strength to Weight: Bending, points 23 to 25
17
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 22 to 24
14

Alloy Composition

Carbon (C), % 0.4 to 0.48
0 to 0.15
Copper (Cu), % 0
0.2 to 0.45
Iron (Fe), % 97.5 to 98
98.2 to 99.8
Manganese (Mn), % 1.4 to 1.7
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.15
Sulfur (S), % 0.24 to 0.33
0 to 0.050