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ASTM Grade HC Steel vs. SAE-AISI S2 Steel

Both ASTM grade HC steel and SAE-AISI S2 steel are iron alloys. They have 70% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HC steel and the bottom bar is SAE-AISI S2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 430
670 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 17
44
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.6
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.1
Embodied Energy, MJ/kg 40
30
Embodied Water, L/kg 170
49

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 16
24 to 69
Strength to Weight: Bending, points 16
22 to 44
Thermal Diffusivity, mm2/s 4.5
12
Thermal Shock Resistance, points 14
23 to 68

Alloy Composition

Carbon (C), % 0 to 0.5
0.4 to 0.55
Chromium (Cr), % 26 to 30
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 61.9 to 74
96 to 98.1
Manganese (Mn), % 0 to 1.0
0.3 to 0.5
Molybdenum (Mo), % 0 to 0.5
0.3 to 0.6
Nickel (Ni), % 0 to 4.0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.9 to 1.2
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0 to 0.5