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S82012 Stainless Steel vs. AISI 420F Stainless Steel

Both S82012 stainless steel and AISI 420F stainless steel are iron alloys. Both are furnished in the annealed condition. They have 89% of their average alloy composition in common. There are 32 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 S82012 stainless steel and the bottom bar is AISI 420F stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
18
Fatigue Strength, MPa 480
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Shear Strength, MPa 550
460
Tensile Strength: Ultimate (UTS), MPa 800
740
Tensile Strength: Yield (Proof), MPa 560
430

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 420
390
Maximum Temperature: Mechanical, °C 950
760
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 11
7.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.4
2.0
Embodied Energy, MJ/kg 35
28
Embodied Water, L/kg 140
100

Common Calculations

PREN (Pitting Resistance) 24
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
120
Resilience: Unit (Modulus of Resilience), kJ/m3 790
480
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
23
Thermal Diffusivity, mm2/s 3.9
6.8
Thermal Shock Resistance, points 23
27

Alloy Composition

Carbon (C), % 0 to 0.050
0.3 to 0.4
Chromium (Cr), % 19 to 20.5
12 to 14
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 71.3 to 77.9
82.4 to 87.6
Manganese (Mn), % 2.0 to 4.0
0 to 1.3
Molybdenum (Mo), % 0.1 to 0.6
0 to 0.5
Nickel (Ni), % 0.8 to 1.5
0
Nitrogen (N), % 0.16 to 0.26
0
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.0050
0.15 to 0.35