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AWS ERNiCrFe-6 vs. AISI 444 Stainless Steel

AWS ERNiCrFe-6 belongs to the nickel alloys classification, while AISI 444 stainless steel belongs to the iron alloys. They have a modest 21% 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 (10, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiCrFe-6 and the bottom bar is AISI 444 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 34
23
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 630
470

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Melting Completion (Liquidus), °C 1370
1460
Melting Onset (Solidus), °C 1320
1420
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 13
23
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 55
15
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 9.8
3.4
Embodied Energy, MJ/kg 140
47
Embodied Water, L/kg 260
130

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 21
17
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 3.3
6.2
Thermal Shock Resistance, points 19
16

Alloy Composition


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Carbon (C), % 0 to 0.080
0 to 0.025
Chromium (Cr), % 14 to 17
17.5 to 19.5
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 8.0
73.3 to 80.8
Manganese (Mn), % 2.0 to 2.7
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 67 to 81.5
0 to 1.0
Niobium (Nb), % 0
0.2 to 0.8
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.5 to 3.5
0.2 to 0.8
Residuals, % 0 to 0.5
0