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EN 1.4313 Stainless Steel vs. S21800 Stainless Steel

Both EN 1.4313 stainless steel and S21800 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4313 stainless steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 12 to 17
40
Fatigue Strength, MPa 340 to 510
330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Shear Strength, MPa 460 to 600
510
Tensile Strength: Ultimate (UTS), MPa 750 to 1000
740
Tensile Strength: Yield (Proof), MPa 580 to 910
390

Thermal Properties

Latent Heat of Fusion, J/g 280
340
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 780
900
Melting Completion (Liquidus), °C 1450
1360
Melting Onset (Solidus), °C 1400
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.4
3.1
Embodied Energy, MJ/kg 34
45
Embodied Water, L/kg 110
150

Common Calculations

PREN (Pitting Resistance) 15
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 150
250
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 2100
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 27 to 36
27
Strength to Weight: Bending, points 23 to 28
24
Thermal Shock Resistance, points 27 to 36
17

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.1
Chromium (Cr), % 12 to 14
16 to 18
Iron (Fe), % 78.5 to 84.2
59.1 to 65.4
Manganese (Mn), % 0 to 1.5
7.0 to 9.0
Molybdenum (Mo), % 0.3 to 0.7
0
Nickel (Ni), % 3.5 to 4.5
8.0 to 9.0
Nitrogen (N), % 0 to 0.020
0.080 to 0.18
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 0.7
3.5 to 4.5
Sulfur (S), % 0 to 0.015
0 to 0.030