MakeItFrom.com
Menu (ESC)

SAE-AISI M3 Class 1 Steel vs. R30816 Cobalt

SAE-AISI M3 class 1 steel belongs to the iron alloys classification, while R30816 cobalt belongs to the cobalt alloys. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M3 class 1 steel and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
1020

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1610
1540
Melting Onset (Solidus), °C 1570
1460
Specific Heat Capacity, J/kg-K 440
420
Thermal Conductivity, W/m-K 26
13
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.3
9.1
Embodied Carbon, kg CO2/kg material 10
20
Embodied Energy, MJ/kg 150
320
Embodied Water, L/kg 100
440

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 26 to 72
31
Strength to Weight: Bending, points 22 to 44
25
Thermal Diffusivity, mm2/s 7.2
3.3
Thermal Shock Resistance, points 24 to 67
28

Alloy Composition

Carbon (C), % 1.0 to 1.1
0.32 to 0.42
Chromium (Cr), % 3.8 to 4.5
19 to 21
Cobalt (Co), % 0
40 to 49.8
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.9 to 82.9
0 to 5.0
Manganese (Mn), % 0.15 to 0.4
1.0 to 2.0
Molybdenum (Mo), % 4.8 to 6.5
3.5 to 4.5
Nickel (Ni), % 0 to 0.3
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tungsten (W), % 5.0 to 6.8
3.5 to 4.5
Vanadium (V), % 2.3 to 2.8
0