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AWS ER90S-B9 vs. EN 1.4903 Stainless Steel

Both AWS ER90S-B9 and EN 1.4903 stainless steel are iron alloys. They have a very high 99% 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 AWS ER90S-B9 and the bottom bar is EN 1.4903 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
20 to 21
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
75
Tensile Strength: Ultimate (UTS), MPa 690
670 to 680
Tensile Strength: Yield (Proof), MPa 470
500

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 25
26
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
4.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
7.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
2.6
Embodied Energy, MJ/kg 37
36
Embodied Water, L/kg 91
88

Common Calculations

PREN (Pitting Resistance) 13
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 570
650
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
24
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 6.9
7.0
Thermal Shock Resistance, points 19
23

Alloy Composition

Aluminum (Al), % 0 to 0.040
0 to 0.040
Carbon (C), % 0.070 to 0.13
0.080 to 0.12
Chromium (Cr), % 8.0 to 10.5
8.0 to 9.5
Copper (Cu), % 0 to 0.2
0 to 0.3
Iron (Fe), % 84.4 to 90.7
87.1 to 90.5
Manganese (Mn), % 0 to 1.2
0.3 to 0.6
Molybdenum (Mo), % 0.85 to 1.2
0.85 to 1.1
Nickel (Ni), % 0 to 0.8
0 to 0.4
Niobium (Nb), % 0.020 to 0.1
0.060 to 0.1
Nitrogen (N), % 0.030 to 0.070
0.030 to 0.070
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0.15 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.015
Vanadium (V), % 0.15 to 0.3
0.18 to 0.25
Residuals, % 0 to 0.5
0