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S21800 Stainless Steel vs. AWS E630

Both S21800 stainless steel and AWS E630 are iron alloys. They have 84% 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 S21800 stainless steel and the bottom bar is AWS E630.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 40
8.0
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 740
1040

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Melting Completion (Liquidus), °C 1360
1430
Melting Onset (Solidus), °C 1310
1380
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Base Metal Price, % relative 15
14
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.1
2.8
Embodied Energy, MJ/kg 45
40
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 19
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
37
Strength to Weight: Bending, points 24
29
Thermal Shock Resistance, points 17
28

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.050
Chromium (Cr), % 16 to 18
16 to 16.8
Copper (Cu), % 0
3.3 to 4.0
Iron (Fe), % 59.1 to 65.4
71.6 to 75.9
Manganese (Mn), % 7.0 to 9.0
0.25 to 0.75
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 8.0 to 9.0
4.5 to 5.0
Niobium (Nb), % 0
0.15 to 0.3
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 3.5 to 4.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030