MakeItFrom.com
Menu (ESC)

SAE-AISI M44 Steel vs. R30003 Cobalt

SAE-AISI M44 steel belongs to the iron alloys classification, while R30003 cobalt belongs to the cobalt alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M44 steel and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
83
Tensile Strength: Ultimate (UTS), MPa 870 to 2290
970 to 1720

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1590
1400
Melting Onset (Solidus), °C 1540
1440
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 14
13
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 43
95
Density, g/cm3 8.4
8.4
Embodied Carbon, kg CO2/kg material 9.9
8.0
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 170
400

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28 to 75
32 to 57
Strength to Weight: Bending, points 24 to 46
26 to 38
Thermal Diffusivity, mm2/s 3.7
3.3
Thermal Shock Resistance, points 27 to 70
26 to 45

Alloy Composition

Boron (B), % 0
0 to 0.1
Carbon (C), % 1.1 to 1.2
0 to 0.15
Chromium (Cr), % 4.0 to 4.8
19 to 21
Cobalt (Co), % 11 to 12.3
39 to 41
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 65.3 to 70.6
10 to 20.5
Manganese (Mn), % 0.2 to 0.4
1.5 to 2.5
Molybdenum (Mo), % 6.0 to 7.0
6.0 to 8.0
Nickel (Ni), % 0 to 0.3
14 to 16
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.3 to 0.55
0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 5.0 to 5.8
0
Vanadium (V), % 1.9 to 2.2
0

Comparable Variants