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EN 1.0580 Steel vs. SAE-AISI 4012 Steel

Both EN 1.0580 steel and SAE-AISI 4012 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.0580 steel and the bottom bar is SAE-AISI 4012 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 5.6 to 25
23
Fatigue Strength, MPa 210 to 270
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 340 to 360
270
Tensile Strength: Ultimate (UTS), MPa 540 to 620
420
Tensile Strength: Yield (Proof), MPa 290 to 450
220

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
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 51
51
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 18
19
Embodied Water, L/kg 46
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 120
82
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 540
130
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 22
15
Strength to Weight: Bending, points 19 to 21
16
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 17 to 20
12

Alloy Composition

Carbon (C), % 0 to 0.22
0.090 to 0.14
Iron (Fe), % 97.5 to 100
98.2 to 98.9
Manganese (Mn), % 0 to 1.6
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 0.55
0.15 to 0.35
Sulfur (S), % 0 to 0.045
0 to 0.040