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S21800 Stainless Steel vs. EN 1.4315 Stainless Steel

Both S21800 stainless steel and EN 1.4315 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 29 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 1.4315 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
45
Fatigue Strength, MPa 330
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 510
440
Tensile Strength: Ultimate (UTS), MPa 740
630
Tensile Strength: Yield (Proof), MPa 390
310

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 900
960
Melting Completion (Liquidus), °C 1360
1420
Melting Onset (Solidus), °C 1310
1380
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
15
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.1
3.0
Embodied Energy, MJ/kg 45
43
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 19
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
240
Resilience: Unit (Modulus of Resilience), kJ/m3 390
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
22
Strength to Weight: Bending, points 24
21
Thermal Shock Resistance, points 17
14

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.060
Chromium (Cr), % 16 to 18
18 to 20
Iron (Fe), % 59.1 to 65.4
65.7 to 73.9
Manganese (Mn), % 7.0 to 9.0
0 to 2.0
Nickel (Ni), % 8.0 to 9.0
8.0 to 11
Nitrogen (N), % 0.080 to 0.18
0.12 to 0.22
Phosphorus (P), % 0 to 0.060
0 to 0.045
Silicon (Si), % 3.5 to 4.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015