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ASTM Grade HC Steel vs. SAE-AISI O6 Steel

Both ASTM grade HC steel and SAE-AISI O6 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 O6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
71
Tensile Strength: Ultimate (UTS), MPa 430
670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
43
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.3
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.8
1.5
Embodied Energy, MJ/kg 40
21
Embodied Water, L/kg 170
47

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 16
24 to 74
Strength to Weight: Bending, points 16
22 to 47
Thermal Diffusivity, mm2/s 4.5
12
Thermal Shock Resistance, points 14
22 to 69

Alloy Composition

Carbon (C), % 0 to 0.5
1.3 to 1.6
Chromium (Cr), % 26 to 30
0 to 0.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 61.9 to 74
94.6 to 97.7
Manganese (Mn), % 0 to 1.0
0.3 to 1.1
Molybdenum (Mo), % 0 to 0.5
0.2 to 0.3
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
0.55 to 1.5
Sulfur (S), % 0 to 0.040
0 to 0.030