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AISI W1 Steel vs. SAE-AISI O6 Steel

Both AISI W1 steel and SAE-AISI O6 steel are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is AISI W1 steel and the bottom bar is SAE-AISI O6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
71
Tensile Strength: Ultimate (UTS), MPa 590 to 2320
670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 48
43
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
2.3
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.6
1.5
Embodied Energy, MJ/kg 21
21
Embodied Water, L/kg 47
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 83
24 to 74
Strength to Weight: Bending, points 20 to 50
22 to 47
Thermal Diffusivity, mm2/s 13
12
Thermal Shock Resistance, points 22 to 85
22 to 69

Alloy Composition

Carbon (C), % 0.7 to 1.5
1.3 to 1.6
Chromium (Cr), % 0 to 0.15
0 to 0.3
Copper (Cu), % 0 to 0.2
0 to 0.25
Iron (Fe), % 96.4 to 98.9
94.6 to 97.7
Manganese (Mn), % 0.35 to 0.73
0.3 to 1.1
Molybdenum (Mo), % 0 to 0.1
0.2 to 0.3
Nickel (Ni), % 0 to 0.2
0 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.1 to 0.4
0.55 to 1.5
Sulfur (S), % 0 to 0.025
0 to 0.030
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 0 to 0.1
0

Comparable Variants