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S82012 Stainless Steel vs. AISI 441 Stainless Steel

Both S82012 stainless steel and AISI 441 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 95% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S82012 stainless steel and the bottom bar is AISI 441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
23
Fatigue Strength, MPa 480
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 550
300
Tensile Strength: Ultimate (UTS), MPa 800
470
Tensile Strength: Yield (Proof), MPa 560
270

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 420
550
Maximum Temperature: Mechanical, °C 950
910
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
23
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.4
2.8
Embodied Energy, MJ/kg 35
41
Embodied Water, L/kg 140
130

Common Calculations

PREN (Pitting Resistance) 24
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
92
Resilience: Unit (Modulus of Resilience), kJ/m3 790
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
17
Strength to Weight: Bending, points 25
17
Thermal Diffusivity, mm2/s 3.9
6.1
Thermal Shock Resistance, points 23
16

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 19 to 20.5
17.5 to 19.5
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 71.3 to 77.9
76 to 82.2
Manganese (Mn), % 2.0 to 4.0
0 to 1.0
Molybdenum (Mo), % 0.1 to 0.6
0
Nickel (Ni), % 0.8 to 1.5
0 to 1.0
Niobium (Nb), % 0
0.3 to 0.9
Nitrogen (N), % 0.16 to 0.26
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.0050
0 to 0.030
Titanium (Ti), % 0
0.1 to 0.5