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S32760 Stainless Steel vs. S21800 Stainless Steel

Both S32760 stainless steel and S21800 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 87% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S32760 stainless steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
40
Fatigue Strength, MPa 450
330
Poisson's Ratio 0.27
0.28
Reduction in Area, % 51
62
Shear Modulus, GPa 80
75
Shear Strength, MPa 550
510
Tensile Strength: Ultimate (UTS), MPa 850
740
Tensile Strength: Yield (Proof), MPa 620
390

Thermal Properties

Latent Heat of Fusion, J/g 300
340
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1460
1360
Melting Onset (Solidus), °C 1410
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
15
Density, g/cm3 7.9
7.5
Embodied Carbon, kg CO2/kg material 4.1
3.1
Embodied Energy, MJ/kg 57
45
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 42
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
250
Resilience: Unit (Modulus of Resilience), kJ/m3 930
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 30
27
Strength to Weight: Bending, points 25
24
Thermal Shock Resistance, points 23
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 24 to 26
16 to 18
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 57.6 to 65.8
59.1 to 65.4
Manganese (Mn), % 0 to 1.0
7.0 to 9.0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 6.0 to 8.0
8.0 to 9.0
Nitrogen (N), % 0.2 to 0.3
0.080 to 0.18
Phosphorus (P), % 0 to 0.030
0 to 0.060
Silicon (Si), % 0 to 1.0
3.5 to 4.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0.5 to 1.0
0