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SAE-AISI M43 Steel vs. SAE-AISI O6 Steel

Both SAE-AISI M43 steel and SAE-AISI O6 steel are iron alloys. They have 76% 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 M43 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 0.29
0.29
Shear Modulus, GPa 77
71
Tensile Strength: Ultimate (UTS), MPa 810 to 2290
670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1550
1430
Melting Onset (Solidus), °C 1500
1390
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 19
43
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 33
2.3
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 8.5
1.5
Embodied Energy, MJ/kg 120
21
Embodied Water, L/kg 140
47

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 77
24 to 74
Strength to Weight: Bending, points 24 to 47
22 to 47
Thermal Diffusivity, mm2/s 5.3
12
Thermal Shock Resistance, points 25 to 71
22 to 69

Alloy Composition

Carbon (C), % 1.2 to 1.3
1.3 to 1.6
Chromium (Cr), % 3.5 to 4.3
0 to 0.3
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 70.8 to 76
94.6 to 97.7
Manganese (Mn), % 0.2 to 0.4
0.3 to 1.1
Molybdenum (Mo), % 7.5 to 8.5
0.2 to 0.3
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.65
0.55 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 2.3 to 3.0
0
Vanadium (V), % 1.5 to 1.8
0

Comparable Variants