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S21800 Stainless Steel vs. EN 1.4911 Stainless Steel

Both S21800 stainless steel and EN 1.4911 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is EN 1.4911 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
11
Fatigue Strength, MPa 330
530
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Shear Strength, MPa 510
640
Tensile Strength: Ultimate (UTS), MPa 740
1070
Tensile Strength: Yield (Proof), MPa 390
970

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 900
700
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1310
1410
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
20
Density, g/cm3 7.5
7.9
Embodied Carbon, kg CO2/kg material 3.1
3.4
Embodied Energy, MJ/kg 45
49
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 19
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
120
Resilience: Unit (Modulus of Resilience), kJ/m3 390
2410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
38
Strength to Weight: Bending, points 24
30
Thermal Shock Resistance, points 17
37

Alloy Composition

Boron (B), % 0
0.0050 to 0.015
Carbon (C), % 0 to 0.1
0.050 to 0.12
Chromium (Cr), % 16 to 18
9.8 to 11.2
Cobalt (Co), % 0
5.0 to 7.0
Iron (Fe), % 59.1 to 65.4
75.7 to 83.8
Manganese (Mn), % 7.0 to 9.0
0.3 to 1.3
Molybdenum (Mo), % 0
0.5 to 1.0
Nickel (Ni), % 8.0 to 9.0
0.2 to 1.2
Niobium (Nb), % 0
0.2 to 0.5
Nitrogen (N), % 0.080 to 0.18
0 to 0.035
Phosphorus (P), % 0 to 0.060
0 to 0.025
Silicon (Si), % 3.5 to 4.5
0.1 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 0
0 to 0.7
Vanadium (V), % 0
0.1 to 0.4