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S82012 Stainless Steel vs. SAE-AISI 1144 Steel

Both S82012 stainless steel and SAE-AISI 1144 steel are iron alloys. They have 76% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S82012 stainless steel and the bottom bar is SAE-AISI 1144 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
11 to 17
Fatigue Strength, MPa 480
280 to 430
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
72
Shear Strength, MPa 550
460 to 510
Tensile Strength: Ultimate (UTS), MPa 800
750 to 840
Tensile Strength: Yield (Proof), MPa 560
420 to 690

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 950
400
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
51
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.9
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.4
1.4
Embodied Energy, MJ/kg 35
19
Embodied Water, L/kg 140
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
91 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 790
480 to 1290
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29
27 to 30
Strength to Weight: Bending, points 25
23 to 25
Thermal Diffusivity, mm2/s 3.9
14
Thermal Shock Resistance, points 23
22 to 24

Alloy Composition

Carbon (C), % 0 to 0.050
0.4 to 0.48
Chromium (Cr), % 19 to 20.5
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 71.3 to 77.9
97.5 to 98
Manganese (Mn), % 2.0 to 4.0
1.4 to 1.7
Molybdenum (Mo), % 0.1 to 0.6
0
Nickel (Ni), % 0.8 to 1.5
0
Nitrogen (N), % 0.16 to 0.26
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.8
0
Sulfur (S), % 0 to 0.0050
0.24 to 0.33