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SAE-AISI 1080 Steel vs. AISI 422 Stainless Steel

Both SAE-AISI 1080 steel and AISI 422 stainless steel are iron alloys. They have 85% 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 SAE-AISI 1080 steel and the bottom bar is AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 260
260 to 330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
15 to 17
Fatigue Strength, MPa 300 to 360
410 to 500
Poisson's Ratio 0.29
0.28
Reduction in Area, % 28 to 45
34 to 40
Shear Modulus, GPa 72
76
Shear Strength, MPa 460 to 520
560 to 660
Tensile Strength: Ultimate (UTS), MPa 770 to 870
910 to 1080
Tensile Strength: Yield (Proof), MPa 480 to 590
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
650
Melting Completion (Liquidus), °C 1450
1480
Melting Onset (Solidus), °C 1410
1470
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
24
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 11
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
3.1
Embodied Energy, MJ/kg 19
44
Embodied Water, L/kg 46
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80 to 84
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 610 to 920
1140 to 1910
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 31
32 to 38
Strength to Weight: Bending, points 24 to 26
26 to 30
Thermal Diffusivity, mm2/s 14
6.4
Thermal Shock Resistance, points 25 to 29
33 to 39

Alloy Composition

Carbon (C), % 0.75 to 0.88
0.2 to 0.25
Chromium (Cr), % 0
11 to 12.5
Iron (Fe), % 98.1 to 98.7
81.9 to 85.8
Manganese (Mn), % 0.6 to 0.9
0.5 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.3
Nickel (Ni), % 0
0.5 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0 to 0.050
0 to 0.025
Tungsten (W), % 0
0.9 to 1.3
Vanadium (V), % 0
0.2 to 0.3