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S32750 Stainless Steel vs. S82012 Stainless Steel

Both S32750 stainless steel and S82012 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 85% 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 S32750 stainless steel and the bottom bar is S82012 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 17
40
Fatigue Strength, MPa 360
480
Poisson's Ratio 0.27
0.28
Rockwell C Hardness 28
27
Shear Modulus, GPa 81
78
Shear Strength, MPa 530
550
Tensile Strength: Ultimate (UTS), MPa 860
800
Tensile Strength: Yield (Proof), MPa 590
560

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
950
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 12
13

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 21
11
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.1
2.4
Embodied Energy, MJ/kg 56
35
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 43
24
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
290
Resilience: Unit (Modulus of Resilience), kJ/m3 860
790
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
29
Strength to Weight: Bending, points 26
25
Thermal Diffusivity, mm2/s 4.0
3.9
Thermal Shock Resistance, points 25
23

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 24 to 26
19 to 20.5
Copper (Cu), % 0 to 0.5
0 to 1.0
Iron (Fe), % 58.1 to 66.8
71.3 to 77.9
Manganese (Mn), % 0 to 1.2
2.0 to 4.0
Molybdenum (Mo), % 3.0 to 5.0
0.1 to 0.6
Nickel (Ni), % 6.0 to 8.0
0.8 to 1.5
Nitrogen (N), % 0.24 to 0.32
0.16 to 0.26
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.0050