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S21900 Stainless Steel vs. EN 1.4501 Stainless Steel

Both S21900 stainless steel and EN 1.4501 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S21900 stainless steel and the bottom bar is EN 1.4501 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 50
27
Fatigue Strength, MPa 380
430
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
80
Shear Strength, MPa 510
540
Tensile Strength: Ultimate (UTS), MPa 710
830
Tensile Strength: Yield (Proof), MPa 390
600

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 17
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 15
22
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
4.1
Embodied Energy, MJ/kg 43
57
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 25
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
210
Resilience: Unit (Modulus of Resilience), kJ/m3 380
870
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26
29
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 3.8
4.0
Thermal Shock Resistance, points 15
22

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 19 to 21.5
24 to 26
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 59.4 to 67.4
57.6 to 65.8
Manganese (Mn), % 8.0 to 10
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 5.5 to 7.5
6.0 to 8.0
Nitrogen (N), % 0.15 to 0.4
0.2 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 0
0.5 to 1.0