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SAE-AISI 5140 Steel vs. EN 1.4424 Stainless Steel

Both SAE-AISI 5140 steel and EN 1.4424 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 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 5140 steel and the bottom bar is EN 1.4424 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 290
230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 29
28
Fatigue Strength, MPa 220 to 570
350 to 370
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 360 to 600
520
Tensile Strength: Ultimate (UTS), MPa 560 to 970
800
Tensile Strength: Yield (Proof), MPa 290 to 840
480 to 500

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 420
960
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
13
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
3.4
Embodied Energy, MJ/kg 19
46
Embodied Water, L/kg 49
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76 to 180
190 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 1880
580 to 640
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20 to 34
29
Strength to Weight: Bending, points 19 to 28
25
Thermal Diffusivity, mm2/s 12
3.5
Thermal Shock Resistance, points 16 to 29
23

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.030
Chromium (Cr), % 0.7 to 0.9
18 to 19
Iron (Fe), % 97.3 to 98.1
68.6 to 72.4
Manganese (Mn), % 0.7 to 0.9
1.2 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0
4.5 to 5.2
Nitrogen (N), % 0
0.050 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.15 to 0.35
1.4 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.015

Comparable Variants