MakeItFrom.com
Menu (ESC)

SAE-AISI M43 Steel vs. Grade 21 Titanium

SAE-AISI M43 steel belongs to the iron alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 21 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 M43 steel and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 77
51
Tensile Strength: Ultimate (UTS), MPa 810 to 2290
890 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Melting Completion (Liquidus), °C 1550
1740
Melting Onset (Solidus), °C 1500
1690
Specific Heat Capacity, J/kg-K 450
500
Thermal Conductivity, W/m-K 19
7.5
Thermal Expansion, µm/m-K 12
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 33
60
Density, g/cm3 8.2
5.4
Embodied Carbon, kg CO2/kg material 8.5
32
Embodied Energy, MJ/kg 120
490
Embodied Water, L/kg 140
180

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
32
Strength to Weight: Axial, points 27 to 77
46 to 69
Strength to Weight: Bending, points 24 to 47
38 to 50
Thermal Diffusivity, mm2/s 5.3
2.8
Thermal Shock Resistance, points 25 to 71
66 to 100

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 1.2 to 1.3
0 to 0.050
Chromium (Cr), % 3.5 to 4.3
0
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 70.8 to 76
0 to 0.4
Manganese (Mn), % 0.2 to 0.4
0
Molybdenum (Mo), % 7.5 to 8.5
14 to 16
Nickel (Ni), % 0 to 0.3
0
Niobium (Nb), % 0
2.2 to 3.2
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.17
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.65
0.15 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
76 to 81.2
Tungsten (W), % 2.3 to 3.0
0
Vanadium (V), % 1.5 to 1.8
0
Residuals, % 0
0 to 0.4

Comparable Variants