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S82121 Stainless Steel vs. S32654 Stainless Steel

Both S82121 stainless steel and S32654 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 70% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S82121 stainless steel and the bottom bar is S32654 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
220
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 28
45
Fatigue Strength, MPa 370
450
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
82
Shear Strength, MPa 470
590
Tensile Strength: Ultimate (UTS), MPa 730
850
Tensile Strength: Yield (Proof), MPa 510
490

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 430
440
Maximum Temperature: Mechanical, °C 1020
1100
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 14
34
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.8
6.4
Embodied Energy, MJ/kg 40
87
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 28
57
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
330
Resilience: Unit (Modulus of Resilience), kJ/m3 660
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26
29
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 4.0
2.9
Thermal Shock Resistance, points 20
19

Alloy Composition

Carbon (C), % 0 to 0.035
0 to 0.020
Chromium (Cr), % 21 to 23
24 to 25
Copper (Cu), % 0.2 to 1.2
0.3 to 0.6
Iron (Fe), % 66.7 to 75.4
38.3 to 45.3
Manganese (Mn), % 1.0 to 2.5
2.0 to 4.0
Molybdenum (Mo), % 0.3 to 1.3
7.0 to 8.0
Nickel (Ni), % 2.0 to 4.0
21 to 23
Nitrogen (N), % 0.15 to 0.25
0.45 to 0.55
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.0050