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N08031 Stainless Steel vs. SAE-AISI 4161 Steel

Both N08031 stainless steel and SAE-AISI 4161 steel are iron alloys. Both are furnished in the annealed condition. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 N08031 stainless steel and the bottom bar is SAE-AISI 4161 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
20
Fatigue Strength, MPa 290
290
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 510
420
Tensile Strength: Ultimate (UTS), MPa 730
680
Tensile Strength: Yield (Proof), MPa 310
410

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
420
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
43
Thermal Expansion, µm/m-K 18
12

Otherwise Unclassified Properties

Base Metal Price, % relative 39
2.5
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 7.1
1.5
Embodied Energy, MJ/kg 96
20
Embodied Water, L/kg 240
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
120
Resilience: Unit (Modulus of Resilience), kJ/m3 230
460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
24
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 3.1
12
Thermal Shock Resistance, points 14
22

Alloy Composition

Carbon (C), % 0 to 0.015
0.56 to 0.64
Chromium (Cr), % 26 to 28
0.7 to 0.9
Copper (Cu), % 1.0 to 1.4
0
Iron (Fe), % 29 to 36.9
96.7 to 97.6
Manganese (Mn), % 0 to 2.0
0.75 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
0.25 to 0.35
Nickel (Ni), % 30 to 32
0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 0.3
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.040