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S82121 Stainless Steel vs. N08028 Stainless Steel

Both S82121 stainless steel and N08028 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 63% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S82121 stainless steel and the bottom bar is N08028 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
45
Fatigue Strength, MPa 370
220
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
80
Shear Strength, MPa 470
400
Tensile Strength: Ultimate (UTS), MPa 730
570
Tensile Strength: Yield (Proof), MPa 510
240

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Corrosion, °C 430
460
Maximum Temperature: Mechanical, °C 1020
1100
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 14
37
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.8
6.4
Embodied Energy, MJ/kg 40
89
Embodied Water, L/kg 150
240

Common Calculations

PREN (Pitting Resistance) 28
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
210
Resilience: Unit (Modulus of Resilience), kJ/m3 660
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
19
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 20
12

Alloy Composition

Carbon (C), % 0 to 0.035
0 to 0.030
Chromium (Cr), % 21 to 23
26 to 28
Copper (Cu), % 0.2 to 1.2
0.6 to 1.4
Iron (Fe), % 66.7 to 75.4
29 to 40.4
Manganese (Mn), % 1.0 to 2.5
0 to 2.5
Molybdenum (Mo), % 0.3 to 1.3
3.0 to 4.0
Nickel (Ni), % 2.0 to 4.0
30 to 34
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030