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AWS E310 vs. S81921 Stainless Steel

Both AWS E310 and S81921 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS E310 and the bottom bar is S81921 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
29
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 620
710

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1360
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 26
14
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.6
2.9
Embodied Energy, MJ/kg 65
41
Embodied Water, L/kg 200
150

Common Calculations

PREN (Pitting Resistance) 28
28
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 3.7
4.0
Thermal Shock Resistance, points 15
20

Alloy Composition

Carbon (C), % 0.080 to 0.2
0 to 0.030
Chromium (Cr), % 25 to 28
19 to 22
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 44.5 to 53.9
66.7 to 75.9
Manganese (Mn), % 1.0 to 2.5
2.0 to 4.0
Molybdenum (Mo), % 0 to 0.75
1.0 to 2.0
Nickel (Ni), % 20 to 22.5
2.0 to 4.0
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030