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AWS E309Nb vs. S21603 Stainless Steel

Both AWS E309Nb and S21603 stainless steel are iron alloys. They have 88% 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 AWS E309Nb and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
45
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
79
Tensile Strength: Ultimate (UTS), MPa 620
690

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 14
17

Otherwise Unclassified Properties

Base Metal Price, % relative 25
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.4
3.6
Embodied Energy, MJ/kg 64
50
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 25
34
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 21
22
Thermal Shock Resistance, points 16
15

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.030
Chromium (Cr), % 22 to 25
17.5 to 22
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 54.8 to 64.8
57.6 to 67.8
Manganese (Mn), % 0.5 to 2.5
7.5 to 9.0
Molybdenum (Mo), % 0 to 0.75
2.0 to 3.0
Nickel (Ni), % 12 to 14
5.0 to 7.0
Niobium (Nb), % 0.7 to 1.0
0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030