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SAE-AISI 4150 Steel vs. EN 1.0308 Steel

Both SAE-AISI 4150 steel and EN 1.0308 steel are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI 4150 steel and the bottom bar is EN 1.0308 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 380
100 to 130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 20
7.8 to 28
Fatigue Strength, MPa 260 to 780
140 to 200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 410 to 800
230 to 260
Tensile Strength: Ultimate (UTS), MPa 660 to 1310
360 to 440
Tensile Strength: Yield (Proof), MPa 380 to 1220
190 to 340

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 42
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
18
Embodied Water, L/kg 51
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82 to 180
32 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 3930
93 to 300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 47
13 to 16
Strength to Weight: Bending, points 22 to 34
14 to 16
Thermal Diffusivity, mm2/s 11
14
Thermal Shock Resistance, points 19 to 39
11 to 14

Alloy Composition

Carbon (C), % 0.48 to 0.53
0 to 0.17
Chromium (Cr), % 0.8 to 1.1
0
Iron (Fe), % 96.7 to 97.7
98.2 to 100
Manganese (Mn), % 0.75 to 1.0
0 to 1.2
Molybdenum (Mo), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.15 to 0.35
0 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.045

Comparable Variants