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AWS E3155 vs. AISI 431 Stainless Steel

Both AWS E3155 and AISI 431 stainless steel are iron alloys. They have 49% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AWS E3155 and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
15 to 17
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 770
890 to 1380

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Melting Completion (Liquidus), °C 1460
1510
Melting Onset (Solidus), °C 1410
1450
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
26
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
9.0
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.7
2.2
Embodied Energy, MJ/kg 110
31
Embodied Water, L/kg 300
120

Common Calculations

PREN (Pitting Resistance) 35
16
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
32 to 50
Strength to Weight: Bending, points 22
27 to 36
Thermal Diffusivity, mm2/s 3.3
7.0
Thermal Shock Resistance, points 20
28 to 43

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.2
Chromium (Cr), % 20 to 22.5
15 to 17
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 23.3 to 36.3
78.2 to 83.8
Manganese (Mn), % 1.0 to 2.5
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
1.3 to 2.5
Niobium (Nb), % 0.75 to 1.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 2.0 to 3.0
0