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S21800 Stainless Steel vs. S35500 Stainless Steel

Both S21800 stainless steel and S35500 stainless steel are iron alloys. They have 84% 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 S21800 stainless steel and the bottom bar is S35500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
14
Fatigue Strength, MPa 330
690 to 730
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
78
Shear Strength, MPa 510
810 to 910
Tensile Strength: Ultimate (UTS), MPa 740
1330 to 1490
Tensile Strength: Yield (Proof), MPa 390
1200 to 1280

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 900
870
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
16
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.1
3.5
Embodied Energy, MJ/kg 45
47
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 19
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
180 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 390
3610 to 4100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
47 to 53
Strength to Weight: Bending, points 24
34 to 37
Thermal Shock Resistance, points 17
44 to 49

Alloy Composition

Carbon (C), % 0 to 0.1
0.1 to 0.15
Chromium (Cr), % 16 to 18
15 to 16
Iron (Fe), % 59.1 to 65.4
73.2 to 77.7
Manganese (Mn), % 7.0 to 9.0
0.5 to 1.3
Molybdenum (Mo), % 0
2.5 to 3.2
Nickel (Ni), % 8.0 to 9.0
4.0 to 5.0
Niobium (Nb), % 0
0.1 to 0.5
Nitrogen (N), % 0.080 to 0.18
0.070 to 0.13
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 3.5 to 4.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030