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EN 1.3558 Steel vs. SAE-AISI 4145 Steel

Both EN 1.3558 steel and SAE-AISI 4145 steel are iron alloys. They have 78% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.3558 steel and the bottom bar is SAE-AISI 4145 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
310
Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 770
580

Thermal Properties

Latent Heat of Fusion, J/g 240
250
Maximum Temperature: Mechanical, °C 490
420
Melting Completion (Liquidus), °C 1810
1460
Melting Onset (Solidus), °C 1760
1420
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 20
42
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 45
2.4
Density, g/cm3 9.3
7.8
Embodied Carbon, kg CO2/kg material 8.4
1.5
Embodied Energy, MJ/kg 130
20
Embodied Water, L/kg 90
51

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 23
21
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 5.3
11
Thermal Shock Resistance, points 22
17

Alloy Composition

Carbon (C), % 0.7 to 0.8
0.43 to 0.48
Chromium (Cr), % 3.9 to 4.3
0.8 to 1.1
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 73.7 to 77.6
96.7 to 97.7
Manganese (Mn), % 0 to 0.4
0.75 to 1.0
Molybdenum (Mo), % 0 to 0.6
0.15 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.4
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.040
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 1.0 to 1.3
0