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S82012 Stainless Steel vs. S32808 Stainless Steel

Both S82012 stainless steel and S32808 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 83% of their average alloy composition in common. There are 33 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 S82012 stainless steel and the bottom bar is S32808 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 40
17
Fatigue Strength, MPa 480
350
Poisson's Ratio 0.28
0.27
Rockwell C Hardness 27
28
Shear Modulus, GPa 78
81
Shear Strength, MPa 550
480
Tensile Strength: Ultimate (UTS), MPa 800
780
Tensile Strength: Yield (Proof), MPa 560
570

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 950
1100
Melting Completion (Liquidus), °C 1430
1470
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
24
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.4
4.0
Embodied Energy, MJ/kg 35
57
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 24
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
120
Resilience: Unit (Modulus of Resilience), kJ/m3 790
790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
27
Strength to Weight: Bending, points 25
24
Thermal Diffusivity, mm2/s 3.9
3.8
Thermal Shock Resistance, points 23
21

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 19 to 20.5
27 to 27.9
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 71.3 to 77.9
58.1 to 62.8
Manganese (Mn), % 2.0 to 4.0
0 to 1.1
Molybdenum (Mo), % 0.1 to 0.6
0.8 to 1.2
Nickel (Ni), % 0.8 to 1.5
7.0 to 8.2
Nitrogen (N), % 0.16 to 0.26
0.3 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.8
0 to 0.5
Sulfur (S), % 0 to 0.0050
0 to 0.010
Tungsten (W), % 0
2.1 to 2.5