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SAE-AISI M47 Steel vs. SAE-AISI O1 Steel

Both SAE-AISI M47 steel and SAE-AISI O1 steel are iron alloys. They have 85% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M47 steel and the bottom bar is SAE-AISI O1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
640 to 2060

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1540
1460
Melting Onset (Solidus), °C 1500
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 23
43
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 26
3.4
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 7.4
1.9
Embodied Energy, MJ/kg 100
27
Embodied Water, L/kg 120
51

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 79
23 to 73
Strength to Weight: Bending, points 24 to 48
21 to 46
Thermal Diffusivity, mm2/s 6.3
12
Thermal Shock Resistance, points 27 to 77
21 to 68

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.85 to 1.0
Chromium (Cr), % 3.5 to 4.0
0.4 to 0.6
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 78.7 to 85
95 to 97.4
Manganese (Mn), % 0.15 to 0.4
1.0 to 1.4
Molybdenum (Mo), % 9.3 to 10
0
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.3 to 1.8
0.4 to 0.6
Vanadium (V), % 1.2 to 1.4
0 to 0.3

Comparable Variants