MakeItFrom.com
Menu (ESC)

SAE-AISI T4 Steel vs. R30008 Cobalt

SAE-AISI T4 steel belongs to the iron alloys classification, while R30008 cobalt belongs to the cobalt alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 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 T4 steel and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
83
Tensile Strength: Ultimate (UTS), MPa 800 to 2140
950 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Melting Completion (Liquidus), °C 1810
1400
Melting Onset (Solidus), °C 1750
1330
Specific Heat Capacity, J/kg-K 410
450
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 55
95
Density, g/cm3 9.4
8.4
Embodied Carbon, kg CO2/kg material 8.5
8.1
Embodied Energy, MJ/kg 130
110
Embodied Water, L/kg 120
400

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 24 to 64
31 to 56
Strength to Weight: Bending, points 20 to 39
25 to 37
Thermal Shock Resistance, points 24 to 64
25 to 44

Alloy Composition

Boron (B), % 0
0 to 0.0010
Carbon (C), % 0.7 to 0.8
0 to 0.15
Chromium (Cr), % 3.8 to 4.5
18.5 to 21.5
Cobalt (Co), % 4.3 to 5.8
39 to 42
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 66.3 to 72.3
7.6 to 20
Manganese (Mn), % 0.1 to 0.4
1.0 to 2.0
Molybdenum (Mo), % 0.4 to 1.0
6.5 to 7.5
Nickel (Ni), % 0 to 0.3
15 to 18
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.2 to 0.4
0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 0.8 to 1.2
0

Comparable Variants