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SAE-AISI 1090 Steel vs. N08320 Stainless Steel

Both SAE-AISI 1090 steel and N08320 stainless steel are iron alloys. They have 46% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1090 steel and the bottom bar is N08320 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 280
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
40
Fatigue Strength, MPa 320 to 380
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
78
Shear Strength, MPa 470 to 570
400
Tensile Strength: Ultimate (UTS), MPa 790 to 950
580
Tensile Strength: Yield (Proof), MPa 520 to 610
220

Thermal Properties

Latent Heat of Fusion, J/g 240
300
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 50
12
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
28
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.4
4.9
Embodied Energy, MJ/kg 19
69
Embodied Water, L/kg 46
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82 to 91
180
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1000
120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 34
20
Strength to Weight: Bending, points 24 to 27
20
Thermal Diffusivity, mm2/s 13
3.3
Thermal Shock Resistance, points 25 to 31
13

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.050
Chromium (Cr), % 0
21 to 23
Iron (Fe), % 98 to 98.6
40.4 to 50
Manganese (Mn), % 0.6 to 0.9
0 to 2.5
Nickel (Ni), % 0
25 to 27
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030