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AWS ERNi-1 vs. EN 1.4458 Stainless Steel

AWS ERNi-1 belongs to the nickel alloys classification, while EN 1.4458 stainless steel belongs to the iron alloys. They have a modest 30% 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 AWS ERNi-1 and the bottom bar is EN 1.4458 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 22
34
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 69
78
Tensile Strength: Ultimate (UTS), MPa 470
510

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Melting Completion (Liquidus), °C 1360
1420
Melting Onset (Solidus), °C 1310
1370
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 73
16
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 19
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 19
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 60
30
Density, g/cm3 8.7
8.0
Embodied Carbon, kg CO2/kg material 11
5.4
Embodied Energy, MJ/kg 150
75
Embodied Water, L/kg 230
200

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 15
17
Strength to Weight: Bending, points 15
18
Thermal Diffusivity, mm2/s 19
4.2
Thermal Shock Resistance, points 17
12

Alloy Composition

Aluminum (Al), % 0 to 1.5
0
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 0
19 to 22
Copper (Cu), % 0 to 0.25
0 to 2.0
Iron (Fe), % 0 to 1.0
40.2 to 53
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 93 to 98
26 to 30
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.025
Titanium (Ti), % 2.0 to 3.5
0
Residuals, % 0 to 0.5
0