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AWS ER90S-B9 vs. AISI 441 Stainless Steel

Both AWS ER90S-B9 and AISI 441 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AWS ER90S-B9 and the bottom bar is AISI 441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 18
23
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 690
470
Tensile Strength: Yield (Proof), MPa 470
270

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 25
23
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 37
41
Embodied Water, L/kg 91
130

Common Calculations

PREN (Pitting Resistance) 13
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
92
Resilience: Unit (Modulus of Resilience), kJ/m3 570
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
17
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 6.9
6.1
Thermal Shock Resistance, points 19
16

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.070 to 0.13
0 to 0.030
Chromium (Cr), % 8.0 to 10.5
17.5 to 19.5
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 84.4 to 90.7
76 to 82.2
Manganese (Mn), % 0 to 1.2
0 to 1.0
Molybdenum (Mo), % 0.85 to 1.2
0
Nickel (Ni), % 0 to 0.8
0 to 1.0
Niobium (Nb), % 0.020 to 0.1
0.3 to 0.9
Nitrogen (N), % 0.030 to 0.070
0 to 0.030
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0.15 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0
0.1 to 0.5
Vanadium (V), % 0.15 to 0.3
0
Residuals, % 0 to 0.5
0