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SAE-AISI 4340 Steel vs. EN 1.5662 Steel

Both SAE-AISI 4340 steel and EN 1.5662 steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340 steel and the bottom bar is EN 1.5662 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 360
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 22
20
Fatigue Strength, MPa 330 to 740
380 to 450
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 430 to 770
460 to 470
Tensile Strength: Ultimate (UTS), MPa 690 to 1280
740 to 750
Tensile Strength: Yield (Proof), MPa 470 to 1150
550 to 660

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 430
430
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
8.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
7.5
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.7
2.3
Embodied Energy, MJ/kg 22
31
Embodied Water, L/kg 53
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 170
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 3490
810 to 1150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 45
26
Strength to Weight: Bending, points 22 to 33
23
Thermal Shock Resistance, points 20 to 38
22

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.1
Chromium (Cr), % 0.7 to 0.9
0
Iron (Fe), % 95.1 to 96.3
88.6 to 91.2
Manganese (Mn), % 0.6 to 0.8
0.3 to 0.8
Molybdenum (Mo), % 0.2 to 0.3
0 to 0.1
Nickel (Ni), % 1.7 to 2.0
8.5 to 10
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0.15 to 0.35
0 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.0050
Vanadium (V), % 0
0 to 0.050

Comparable Variants