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AWS ER80S-B6 vs. S21904 Stainless Steel

Both AWS ER80S-B6 and S21904 stainless steel are iron alloys. They have 70% 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 ER80S-B6 and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
17 to 51
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 620
700 to 1000
Tensile Strength: Yield (Proof), MPa 540
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
14
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 4.7
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.8
3.0
Embodied Energy, MJ/kg 24
43
Embodied Water, L/kg 71
160

Common Calculations

PREN (Pitting Resistance) 7.1
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 750
380 to 2070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
25 to 36
Strength to Weight: Bending, points 21
23 to 29
Thermal Diffusivity, mm2/s 11
3.8
Thermal Shock Resistance, points 18
15 to 21

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.040
Chromium (Cr), % 4.5 to 6.0
19 to 21.5
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 90.6 to 94.7
59.5 to 67.4
Manganese (Mn), % 0.4 to 0.7
8.0 to 10
Molybdenum (Mo), % 0.45 to 0.65
0
Nickel (Ni), % 0 to 0.6
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Residuals, % 0 to 0.5
0