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S21800 Stainless Steel vs. N08028 Stainless Steel

Both S21800 stainless steel and N08028 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 62% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is N08028 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
220
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 88
80
Shear Modulus, GPa 75
80
Shear Strength, MPa 510
400
Tensile Strength: Ultimate (UTS), MPa 740
570
Tensile Strength: Yield (Proof), MPa 390
240

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Maximum Temperature: Corrosion, °C 410
460
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1360
1420
Melting Onset (Solidus), °C 1310
1370
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
37
Density, g/cm3 7.5
8.1
Embodied Carbon, kg CO2/kg material 3.1
6.4
Embodied Energy, MJ/kg 45
89
Embodied Water, L/kg 150
240

Common Calculations

PREN (Pitting Resistance) 19
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
210
Resilience: Unit (Modulus of Resilience), kJ/m3 390
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 27
19
Strength to Weight: Bending, points 24
19
Thermal Shock Resistance, points 17
12

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 16 to 18
26 to 28
Copper (Cu), % 0
0.6 to 1.4
Iron (Fe), % 59.1 to 65.4
29 to 40.4
Manganese (Mn), % 7.0 to 9.0
0 to 2.5
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 8.0 to 9.0
30 to 34
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 3.5 to 4.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030