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SAE-AISI 1017 Steel vs. EN 2.4964 Cobalt

SAE-AISI 1017 steel belongs to the iron alloys classification, while EN 2.4964 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1017 steel and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 20 to 30
40
Fatigue Strength, MPa 170 to 270
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
86
Tensile Strength: Ultimate (UTS), MPa 420 to 460
960
Tensile Strength: Yield (Proof), MPa 220 to 390
390

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1470
1630
Melting Onset (Solidus), °C 1420
1550
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 53
15
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.9
1.8

Otherwise Unclassified Properties

Density, g/cm3 7.9
9.6
Embodied Carbon, kg CO2/kg material 1.4
9.8
Embodied Energy, MJ/kg 18
140
Embodied Water, L/kg 45
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 110
310
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 400
340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 15 to 16
28
Strength to Weight: Bending, points 16 to 17
23
Thermal Diffusivity, mm2/s 14
3.9
Thermal Shock Resistance, points 13 to 14
25

Alloy Composition

Carbon (C), % 0.15 to 0.2
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 58
Iron (Fe), % 99.11 to 99.55
0 to 3.0
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0 to 0.050
0 to 0.015
Tungsten (W), % 0
14 to 16