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EN 1.4971 Stainless Steel vs. AWS E120C-K4

Both EN 1.4971 stainless steel and AWS E120C-K4 are iron alloys. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is AWS E120C-K4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
17
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 800
950
Tensile Strength: Yield (Proof), MPa 340
840

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
41
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
3.5
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
1.7
Embodied Energy, MJ/kg 110
23
Embodied Water, L/kg 300
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
160
Resilience: Unit (Modulus of Resilience), kJ/m3 280
1880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
34
Strength to Weight: Bending, points 23
27
Thermal Diffusivity, mm2/s 3.4
11
Thermal Shock Resistance, points 19
28

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.15
Chromium (Cr), % 20 to 22.5
0.15 to 0.65
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 24.3 to 37.1
92.1 to 98.4
Manganese (Mn), % 0 to 2.0
0.75 to 2.3
Molybdenum (Mo), % 2.5 to 3.5
0.25 to 0.65
Nickel (Ni), % 19 to 21
0.5 to 2.5
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 2.0 to 3.0
0
Vanadium (V), % 0
0 to 0.030
Residuals, % 0
0 to 0.5