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SAE-AISI 4615 Steel vs. EN 1.6579 Steel

Both SAE-AISI 4615 steel and EN 1.6579 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 SAE-AISI 4615 steel and the bottom bar is EN 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
260 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
11 to 14
Fatigue Strength, MPa 260
380 to 570
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 480
850 to 980
Tensile Strength: Yield (Proof), MPa 350
600 to 910

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
440
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 47
39
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 3.2
3.7
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.7
Embodied Energy, MJ/kg 22
22
Embodied Water, L/kg 50
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 320
950 to 2210
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
30 to 35
Strength to Weight: Bending, points 17
25 to 28
Thermal Diffusivity, mm2/s 13
11
Thermal Shock Resistance, points 16
25 to 29

Alloy Composition

Carbon (C), % 0.13 to 0.18
0.32 to 0.38
Chromium (Cr), % 0
1.4 to 1.7
Iron (Fe), % 96.4 to 97.4
94.2 to 96.1
Manganese (Mn), % 0.45 to 0.65
0.6 to 1.0
Molybdenum (Mo), % 0.2 to 0.3
0.15 to 0.35
Nickel (Ni), % 1.7 to 2.0
1.4 to 1.7
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030