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ASTM Grade HI Steel vs. SAE-AISI M6 Steel

Both ASTM grade HI steel and SAE-AISI M6 steel are iron alloys. They have 59% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HI steel and the bottom bar is SAE-AISI M6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 550
840 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1400
1560
Melting Onset (Solidus), °C 1350
1510
Specific Heat Capacity, J/kg-K 490
440
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 23
39
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 4.1
8.0
Embodied Energy, MJ/kg 59
120
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 29
28
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 20
28 to 73
Strength to Weight: Bending, points 19
24 to 45
Thermal Diffusivity, mm2/s 3.9
4.7
Thermal Shock Resistance, points 12
26 to 68

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.75 to 0.85
Chromium (Cr), % 26 to 30
3.8 to 4.5
Cobalt (Co), % 0
11 to 13
Iron (Fe), % 46.9 to 59.8
68.8 to 74.6
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0 to 0.5
4.5 to 5.5
Nickel (Ni), % 14 to 18
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.2 to 0.45
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
3.8 to 4.8
Vanadium (V), % 0
1.3 to 1.7