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S21900 Stainless Steel vs. EN 1.4710 Stainless Steel

Both S21900 stainless steel and EN 1.4710 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 72% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S21900 stainless steel and the bottom bar is EN 1.4710 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
260
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 50
20
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
74

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
360
Maximum Temperature: Mechanical, °C 980
750
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
24
Thermal Expansion, µm/m-K 17
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
6.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
7.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
5.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.0
1.8
Embodied Energy, MJ/kg 43
24
Embodied Water, L/kg 160
76

Common Calculations

PREN (Pitting Resistance) 25
7.2
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 3.8
6.5

Alloy Composition

Carbon (C), % 0 to 0.080
0.2 to 0.35
Chromium (Cr), % 19 to 21.5
6.0 to 8.0
Iron (Fe), % 59.4 to 67.4
87.4 to 92.3
Manganese (Mn), % 8.0 to 10
0.5 to 1.0
Molybdenum (Mo), % 0
0 to 0.15
Nickel (Ni), % 5.5 to 7.5
0 to 0.5
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
1.0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030