MakeItFrom.com
Menu (ESC)

R30155 Cobalt vs. ASTM Grade HC Steel

Both R30155 cobalt and ASTM grade HC steel are iron alloys. They have 55% of their average alloy composition in common. There are 29 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 R30155 cobalt and the bottom bar is ASTM grade HC steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
6.0
Fatigue Strength, MPa 310
96
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 81
80
Tensile Strength: Ultimate (UTS), MPa 850
430
Tensile Strength: Yield (Proof), MPa 390
200

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 570
460
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1470
1410
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 450
490
Thermal Conductivity, W/m-K 12
17
Thermal Expansion, µm/m-K 14
11

Otherwise Unclassified Properties

Base Metal Price, % relative 80
14
Density, g/cm3 8.5
7.6
Embodied Carbon, kg CO2/kg material 9.7
2.8
Embodied Energy, MJ/kg 150
40
Embodied Water, L/kg 300
170

Common Calculations

PREN (Pitting Resistance) 37
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
21
Resilience: Unit (Modulus of Resilience), kJ/m3 370
95
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 28
16
Strength to Weight: Bending, points 24
16
Thermal Diffusivity, mm2/s 3.2
4.5
Thermal Shock Resistance, points 21
14

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.5
Chromium (Cr), % 20 to 22.5
26 to 30
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 36.2
61.9 to 74
Manganese (Mn), % 1.0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0 to 0.5
Nickel (Ni), % 19 to 21
0 to 4.0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0