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EN 1.6750 Steel vs. SAE-AISI 4042 Steel

Both EN 1.6750 steel and SAE-AISI 4042 steel are iron alloys. They have a very high 98% 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 EN 1.6750 steel and the bottom bar is SAE-AISI 4042 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
13
Fatigue Strength, MPa 310
360
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 650
680
Tensile Strength: Yield (Proof), MPa 460
570

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
49
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 3.3
2.1
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.5
Embodied Energy, MJ/kg 22
19
Embodied Water, L/kg 52
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
81
Resilience: Unit (Modulus of Resilience), kJ/m3 570
860
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23
24
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 10
13
Thermal Shock Resistance, points 19
22

Alloy Composition

Carbon (C), % 0.17 to 0.23
0.4 to 0.45
Chromium (Cr), % 0.3 to 0.5
0
Iron (Fe), % 95.3 to 97.5
97.9 to 98.6
Manganese (Mn), % 0.8 to 1.2
0.7 to 0.9
Molybdenum (Mo), % 0.4 to 0.8
0.2 to 0.3
Nickel (Ni), % 0.8 to 1.2
0
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.6
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040