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SAE-AISI 1144 Steel vs. N08135 Stainless Steel

Both SAE-AISI 1144 steel and N08135 stainless steel are iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1144 steel and the bottom bar is N08135 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
46
Fatigue Strength, MPa 280 to 430
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
80
Shear Strength, MPa 460 to 510
400
Tensile Strength: Ultimate (UTS), MPa 750 to 840
570
Tensile Strength: Yield (Proof), MPa 420 to 690
240

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
39
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.4
6.8
Embodied Energy, MJ/kg 19
94
Embodied Water, L/kg 47
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 110
210
Resilience: Unit (Modulus of Resilience), kJ/m3 480 to 1290
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 30
19
Strength to Weight: Bending, points 23 to 25
19
Thermal Shock Resistance, points 22 to 24
13

Alloy Composition

Carbon (C), % 0.4 to 0.48
0 to 0.030
Chromium (Cr), % 0
20.5 to 23.5
Copper (Cu), % 0
0 to 0.7
Iron (Fe), % 97.5 to 98
30.2 to 42.3
Manganese (Mn), % 1.4 to 1.7
0 to 1.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
33 to 38
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0.24 to 0.33
0 to 0.030
Tungsten (W), % 0
0.2 to 0.8