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S28200 Stainless Steel vs. S21800 Stainless Steel

Both S28200 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 (1, in this case) are not shown.

For each property being compared, the top bar is S28200 stainless steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
40
Fatigue Strength, MPa 430
330
Poisson's Ratio 0.28
0.28
Reduction in Area, % 57
62
Shear Modulus, GPa 77
75
Shear Strength, MPa 610
510
Tensile Strength: Ultimate (UTS), MPa 870
740
Tensile Strength: Yield (Proof), MPa 460
390

Thermal Properties

Latent Heat of Fusion, J/g 290
340
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 900
900
Melting Completion (Liquidus), °C 1380
1360
Melting Onset (Solidus), °C 1330
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 18
16

Otherwise Unclassified Properties

Base Metal Price, % relative 12
15
Density, g/cm3 7.6
7.5
Embodied Carbon, kg CO2/kg material 2.8
3.1
Embodied Energy, MJ/kg 41
45
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 29
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 330
250
Resilience: Unit (Modulus of Resilience), kJ/m3 540
390
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
26
Strength to Weight: Axial, points 32
27
Strength to Weight: Bending, points 27
24
Thermal Shock Resistance, points 17
17

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.1
Chromium (Cr), % 17 to 19
16 to 18
Copper (Cu), % 0.75 to 1.3
0
Iron (Fe), % 57.7 to 64.1
59.1 to 65.4
Manganese (Mn), % 17 to 19
7.0 to 9.0
Molybdenum (Mo), % 0.75 to 1.3
0
Nickel (Ni), % 0
8.0 to 9.0
Nitrogen (N), % 0.4 to 0.6
0.080 to 0.18
Phosphorus (P), % 0 to 0.045
0 to 0.060
Silicon (Si), % 0 to 1.0
3.5 to 4.5
Sulfur (S), % 0 to 0.030
0 to 0.030