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AISI W2 Steel vs. ACI-ASTM CA6NM Steel

Both AISI W2 steel and ACI-ASTM CA6NM steel are iron alloys. They have 83% of their average alloy composition in common. There are 23 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 AISI W2 steel and the bottom bar is ACI-ASTM CA6NM steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Tensile Strength: Ultimate (UTS), MPa 580 to 2400
850

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
25
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.5
Embodied Energy, MJ/kg 29
34
Embodied Water, L/kg 48
110

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 86
30
Strength to Weight: Bending, points 20 to 51
26
Thermal Diffusivity, mm2/s 12
6.7
Thermal Shock Resistance, points 19 to 80
31

Alloy Composition

Carbon (C), % 0.85 to 1.5
0 to 0.060
Chromium (Cr), % 0 to 0.15
11.5 to 14
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 96.2 to 98.6
78.4 to 84.6
Manganese (Mn), % 0.35 to 0.74
0 to 1.0
Molybdenum (Mo), % 0 to 0.1
0.4 to 1.0
Nickel (Ni), % 0 to 0.2
3.5 to 4.5
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 0.15 to 0.35
0