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AISI W1 Steel vs. EN 1.4640 Stainless Steel

Both AISI W1 steel and EN 1.4640 stainless steel are iron alloys. They have 72% 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 W1 steel and the bottom bar is EN 1.4640 stainless 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
77
Tensile Strength: Ultimate (UTS), MPa 590 to 2320
620 to 650

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 48
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
2.8
Embodied Energy, MJ/kg 21
40
Embodied Water, L/kg 47
150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 83
22 to 23
Strength to Weight: Bending, points 20 to 50
21
Thermal Diffusivity, mm2/s 13
4.0
Thermal Shock Resistance, points 22 to 85
14 to 15

Alloy Composition

Carbon (C), % 0.7 to 1.5
0.030 to 0.080
Chromium (Cr), % 0 to 0.15
18 to 19
Copper (Cu), % 0 to 0.2
1.3 to 2.0
Iron (Fe), % 96.4 to 98.9
67.4 to 73.6
Manganese (Mn), % 0.35 to 0.73
1.5 to 4.0
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.2
5.5 to 6.9
Nitrogen (N), % 0
0.030 to 0.11
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0.1 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.015
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 0 to 0.1
0