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EN 1.4557 Stainless Steel vs. AWS ER90S-B9

Both EN 1.4557 stainless steel and AWS ER90S-B9 are iron alloys. They have 65% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4557 stainless steel and the bottom bar is AWS ER90S-B9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
18
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
75
Tensile Strength: Ultimate (UTS), MPa 560
690
Tensile Strength: Yield (Proof), MPa 300
470

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 29
7.0
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.6
2.6
Embodied Energy, MJ/kg 76
37
Embodied Water, L/kg 190
91

Common Calculations

PREN (Pitting Resistance) 45
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
110
Resilience: Unit (Modulus of Resilience), kJ/m3 210
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
25
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 4.0
6.9
Thermal Shock Resistance, points 12
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.020
0.070 to 0.13
Chromium (Cr), % 19.5 to 20.5
8.0 to 10.5
Copper (Cu), % 0.5 to 1.0
0 to 0.2
Iron (Fe), % 49.5 to 56.3
84.4 to 90.7
Manganese (Mn), % 0 to 1.2
0 to 1.2
Molybdenum (Mo), % 6.0 to 7.0
0.85 to 1.2
Nickel (Ni), % 17.5 to 19.5
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0.18 to 0.24
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0 to 1.0
0.15 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.010
Vanadium (V), % 0
0.15 to 0.3
Residuals, % 0
0 to 0.5