SAE-AISI 1042 Steel vs. Grade 18 Titanium
SAE-AISI 1042 steel belongs to the iron alloys classification, while grade 18 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1042 steel and the bottom bar is grade 18 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
110 |
Elongation at Break, % | 14 to 18 | |
11 to 17 |
Fatigue Strength, MPa | 230 to 370 | |
330 to 480 |
Poisson's Ratio | 0.29 | |
0.32 |
Reduction in Area, % | 39 to 50 | |
23 |
Shear Modulus, GPa | 73 | |
40 |
Shear Strength, MPa | 380 to 420 | |
420 to 590 |
Tensile Strength: Ultimate (UTS), MPa | 620 to 700 | |
690 to 980 |
Tensile Strength: Yield (Proof), MPa | 340 to 580 | |
540 to 810 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
410 |
Maximum Temperature: Mechanical, °C | 400 | |
330 |
Melting Completion (Liquidus), °C | 1460 | |
1640 |
Melting Onset (Solidus), °C | 1420 | |
1590 |
Specific Heat Capacity, J/kg-K | 470 | |
550 |
Thermal Conductivity, W/m-K | 52 | |
8.3 |
Thermal Expansion, µm/m-K | 12 | |
9.9 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
1.3 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
2.7 |
Otherwise Unclassified Properties
Density, g/cm3 | 7.8 | |
4.5 |
Embodied Carbon, kg CO2/kg material | 1.4 | |
41 |
Embodied Energy, MJ/kg | 18 | |
670 |
Embodied Water, L/kg | 46 | |
270 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 94 | |
87 to 110 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 320 to 900 | |
1380 to 3110 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
35 |
Strength to Weight: Axial, points | 22 to 25 | |
43 to 61 |
Strength to Weight: Bending, points | 21 to 22 | |
39 to 49 |
Thermal Diffusivity, mm2/s | 14 | |
3.4 |
Thermal Shock Resistance, points | 20 to 22 | |
47 to 67 |
Alloy Composition
Aluminum (Al), % | 0 | |
2.5 to 3.5 |
Carbon (C), % | 0.4 to 0.47 | |
0 to 0.080 |
Hydrogen (H), % | 0 | |
0 to 0.015 |
Iron (Fe), % | 98.5 to 99 | |
0 to 0.25 |
Manganese (Mn), % | 0.6 to 0.9 | |
0 |
Nitrogen (N), % | 0 | |
0 to 0.030 |
Oxygen (O), % | 0 | |
0 to 0.15 |
Palladium (Pd), % | 0 | |
0.040 to 0.080 |
Phosphorus (P), % | 0 to 0.040 | |
0 |
Sulfur (S), % | 0 to 0.050 | |
0 |
Titanium (Ti), % | 0 | |
92.5 to 95.5 |
Vanadium (V), % | 0 | |
2.0 to 3.0 |
Residuals, % | 0 | |
0 to 0.4 |