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S21900 Stainless Steel vs. EN 1.4557 Stainless Steel

Both S21900 stainless steel and EN 1.4557 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S21900 stainless steel and the bottom bar is EN 1.4557 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 50
40
Fatigue Strength, MPa 380
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 710
560
Tensile Strength: Yield (Proof), MPa 390
300

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 980
1090
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 15
29
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.0
5.6
Embodied Energy, MJ/kg 43
76
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 25
45
Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
190
Resilience: Unit (Modulus of Resilience), kJ/m3 380
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
19
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 3.8
4.0
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.020
Chromium (Cr), % 19 to 21.5
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 59.4 to 67.4
49.5 to 56.3
Manganese (Mn), % 8.0 to 10
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 5.5 to 7.5
17.5 to 19.5
Nitrogen (N), % 0.15 to 0.4
0.18 to 0.24
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010