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SAE-AISI 5140 Steel vs. EN 1.4646 Stainless Steel

Both SAE-AISI 5140 steel and EN 1.4646 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, 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 1.4646 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 290
220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 29
34
Fatigue Strength, MPa 220 to 570
340
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 360 to 600
500
Tensile Strength: Ultimate (UTS), MPa 560 to 970
750
Tensile Strength: Yield (Proof), MPa 290 to 840
430

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 420
910
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.8
Embodied Energy, MJ/kg 19
41
Embodied Water, L/kg 49
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76 to 180
220
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 1880
460
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20 to 34
27
Strength to Weight: Bending, points 19 to 28
24
Thermal Shock Resistance, points 16 to 29
16

Alloy Composition

Carbon (C), % 0.38 to 0.43
0.020 to 0.1
Chromium (Cr), % 0.7 to 0.9
17 to 19
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 97.3 to 98.1
59 to 67.3
Manganese (Mn), % 0.7 to 0.9
10.5 to 12.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
3.5 to 4.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.050
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015