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EN 1.8959 Steel vs. SAE-AISI 4042 Steel

Both EN 1.8959 steel and SAE-AISI 4042 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.8959 steel and the bottom bar is SAE-AISI 4042 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
13
Fatigue Strength, MPa 220
360
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 350
410
Tensile Strength: Ultimate (UTS), MPa 570
680
Tensile Strength: Yield (Proof), MPa 340
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 7.6
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.7
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.5
Embodied Energy, MJ/kg 21
19
Embodied Water, L/kg 52
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
81
Resilience: Unit (Modulus of Resilience), kJ/m3 300
860
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
24
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 10
13
Thermal Shock Resistance, points 17
22

Alloy Composition

Carbon (C), % 0 to 0.19
0.4 to 0.45
Chromium (Cr), % 0.35 to 0.85
0
Copper (Cu), % 0.2 to 0.6
0
Iron (Fe), % 94.9 to 99
97.9 to 98.6
Manganese (Mn), % 0.45 to 1.6
0.7 to 0.9
Molybdenum (Mo), % 0 to 0.35
0.2 to 0.3
Nickel (Ni), % 0 to 0.7
0
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.55
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.040
Zirconium (Zr), % 0 to 0.17
0