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SAE-AISI 4161 Steel vs. AISI 201L Stainless Steel

Both SAE-AISI 4161 steel and AISI 201L stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4161 steel and the bottom bar is AISI 201L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190 to 320
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
22 to 46
Fatigue Strength, MPa 290
270 to 530
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 420
520 to 660
Tensile Strength: Ultimate (UTS), MPa 680
740 to 1040
Tensile Strength: Yield (Proof), MPa 410
290 to 790

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 420
880
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 43
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.6
Embodied Energy, MJ/kg 20
38
Embodied Water, L/kg 50
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
210 to 300
Resilience: Unit (Modulus of Resilience), kJ/m3 460
220 to 1570
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
27 to 37
Strength to Weight: Bending, points 22
24 to 30
Thermal Diffusivity, mm2/s 12
4.0
Thermal Shock Resistance, points 22
16 to 23

Alloy Composition

Carbon (C), % 0.56 to 0.64
0 to 0.030
Chromium (Cr), % 0.7 to 0.9
16 to 18
Iron (Fe), % 96.7 to 97.6
67.9 to 75
Manganese (Mn), % 0.75 to 1.0
5.5 to 7.5
Molybdenum (Mo), % 0.25 to 0.35
0
Nickel (Ni), % 0
3.5 to 5.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.15 to 0.35
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030