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ASTM A242 HSLA Steel vs. SAE-AISI 1095 Steel

Both ASTM A242 HSLA steel and SAE-AISI 1095 steel are iron alloys. Their average alloy composition is basically identical. 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 ASTM A242 HSLA steel and the bottom bar is SAE-AISI 1095 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200 to 270
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
10 to 11
Fatigue Strength, MPa 230
310 to 370
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Shear Strength, MPa 310
400 to 540
Tensile Strength: Ultimate (UTS), MPa 490
680 to 900
Tensile Strength: Yield (Proof), MPa 330
500 to 590

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
47
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
9.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
11

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
19
Embodied Water, L/kg 46
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
63 to 84
Resilience: Unit (Modulus of Resilience), kJ/m3 290
660 to 930
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
24 to 32
Strength to Weight: Bending, points 17
22 to 26
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 14
22 to 29

Alloy Composition

Carbon (C), % 0 to 0.15
0.9 to 1.0
Copper (Cu), % 0.2 to 0.45
0
Iron (Fe), % 98.2 to 99.8
98.4 to 98.8
Manganese (Mn), % 0 to 1.0
0.3 to 0.5
Phosphorus (P), % 0 to 0.15
0 to 0.040
Sulfur (S), % 0 to 0.050
0 to 0.050