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EN 1.4640 Stainless Steel vs. AWS ERNiCrMo-3

EN 1.4640 stainless steel belongs to the iron alloys classification, while AWS ERNiCrMo-3 belongs to the nickel alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4640 stainless steel and the bottom bar is AWS ERNiCrMo-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
34
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 620 to 650
870

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Melting Completion (Liquidus), °C 1420
1480
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 14
80
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 2.8
14
Embodied Energy, MJ/kg 40
190
Embodied Water, L/kg 150
290

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 22 to 23
28
Strength to Weight: Bending, points 21
24
Thermal Diffusivity, mm2/s 4.0
2.8
Thermal Shock Resistance, points 14 to 15
25

Alloy Composition

Aluminum (Al), % 0
0 to 0.4
Carbon (C), % 0.030 to 0.080
0 to 0.010
Chromium (Cr), % 18 to 19
20 to 23
Copper (Cu), % 1.3 to 2.0
0 to 0.5
Iron (Fe), % 67.4 to 73.6
0 to 5.0
Manganese (Mn), % 1.5 to 4.0
0 to 0.5
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 5.5 to 6.9
58 to 68.9
Niobium (Nb), % 0
3.2 to 4.2
Nitrogen (N), % 0.030 to 0.11
0
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
0 to 0.4
Residuals, % 0
0 to 0.5