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SAE-AISI 4161 Steel vs. EN 1.4028 Stainless Steel

Both SAE-AISI 4161 steel and EN 1.4028 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 30 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 4161 steel and the bottom bar is EN 1.4028 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
11 to 17
Fatigue Strength, MPa 290
230 to 400
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 420
410 to 550
Tensile Strength: Ultimate (UTS), MPa 680
660 to 930
Tensile Strength: Yield (Proof), MPa 410
390 to 730

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
760
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 43
30
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
1.9
Embodied Energy, MJ/kg 20
27
Embodied Water, L/kg 50
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
94 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 460
380 to 1360
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
24 to 33
Strength to Weight: Bending, points 22
22 to 27
Thermal Diffusivity, mm2/s 12
8.1
Thermal Shock Resistance, points 22
23 to 32

Alloy Composition

Carbon (C), % 0.56 to 0.64
0.26 to 0.35
Chromium (Cr), % 0.7 to 0.9
12 to 14
Iron (Fe), % 96.7 to 97.6
83.1 to 87.7
Manganese (Mn), % 0.75 to 1.0
0 to 1.5
Molybdenum (Mo), % 0.25 to 0.35
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015