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SAE-AISI 1536 Steel vs. R30035 Cobalt

SAE-AISI 1536 steel belongs to the iron alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 29 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 1536 steel and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220 to 230
Elongation at Break, % 14 to 18
9.0 to 46
Fatigue Strength, MPa 240 to 380
170 to 740
Poisson's Ratio 0.29
0.29
Reduction in Area, % 39 to 46
40 to 74
Shear Modulus, GPa 73
84 to 89
Tensile Strength: Ultimate (UTS), MPa 640 to 720
900 to 1900
Tensile Strength: Yield (Proof), MPa 360 to 600
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1320
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 51
11
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
100
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 1.4
10
Embodied Energy, MJ/kg 19
140
Embodied Water, L/kg 47
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 98
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 950
210 to 5920
Stiffness to Weight: Axial, points 13
14 to 15
Stiffness to Weight: Bending, points 24
23 to 24
Strength to Weight: Axial, points 23 to 25
29 to 61
Strength to Weight: Bending, points 21 to 23
24 to 39
Thermal Diffusivity, mm2/s 14
3.0
Thermal Shock Resistance, points 20 to 23
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0.3 to 0.37
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Iron (Fe), % 98 to 98.5
0 to 1.0
Manganese (Mn), % 1.2 to 1.5
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0
33 to 37
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0
0 to 0.15
Sulfur (S), % 0 to 0.050
0 to 0.010
Titanium (Ti), % 0
0 to 1.0

Comparable Variants