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SAE-AISI M2 Steel vs. ASTM Grade HC Steel

Both SAE-AISI M2 steel and ASTM grade HC steel are iron alloys. They have 73% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M2 steel and the bottom bar is ASTM grade HC steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
430

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1610
1410
Melting Onset (Solidus), °C 1570
1370
Specific Heat Capacity, J/kg-K 440
490
Thermal Conductivity, W/m-K 22
17
Thermal Expansion, µm/m-K 10
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
14
Density, g/cm3 8.4
7.6
Embodied Carbon, kg CO2/kg material 8.8
2.8
Embodied Energy, MJ/kg 130
40
Embodied Water, L/kg 98
170

Common Calculations

PREN (Pitting Resistance) 31
29
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 25 to 71
16
Strength to Weight: Bending, points 22 to 44
16
Thermal Diffusivity, mm2/s 5.9
4.5
Thermal Shock Resistance, points 27 to 76
14

Alloy Composition

Carbon (C), % 0.78 to 1.1
0 to 0.5
Chromium (Cr), % 3.8 to 4.5
26 to 30
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 78.5 to 83.4
61.9 to 74
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 4.5 to 5.5
0 to 0.5
Nickel (Ni), % 0 to 0.3
0 to 4.0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0