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S31727 Stainless Steel vs. AWS E309Nb

Both S31727 stainless steel and AWS E309Nb are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is AWS E309Nb.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 630
620

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Base Metal Price, % relative 24
25
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.7
4.4
Embodied Energy, MJ/kg 64
64
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 35
25
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
22
Strength to Weight: Bending, points 20
21
Thermal Shock Resistance, points 14
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 17.5 to 19
22 to 25
Copper (Cu), % 2.8 to 4.0
0 to 0.75
Iron (Fe), % 53.7 to 61.3
54.8 to 64.8
Manganese (Mn), % 0 to 1.0
0.5 to 2.5
Molybdenum (Mo), % 3.8 to 4.5
0 to 0.75
Nickel (Ni), % 14.5 to 16.5
12 to 14
Niobium (Nb), % 0
0.7 to 1.0
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030