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SAE-AISI 1037 Steel vs. Grade 31 Titanium

SAE-AISI 1037 steel belongs to the iron alloys classification, while grade 31 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 1037 steel and the bottom bar is grade 31 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14 to 20
20
Fatigue Strength, MPa 220 to 340
300
Poisson's Ratio 0.29
0.32
Reduction in Area, % 40 to 45
34
Shear Modulus, GPa 73
41
Shear Strength, MPa 360 to 390
320
Tensile Strength: Ultimate (UTS), MPa 580 to 640
510
Tensile Strength: Yield (Proof), MPa 320 to 540
450

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 400
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 51
21
Thermal Expansion, µm/m-K 12
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
6.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.4
36
Embodied Energy, MJ/kg 18
600
Embodied Water, L/kg 46
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 100
99
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 780
940
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 20 to 23
32
Strength to Weight: Bending, points 20 to 21
32
Thermal Diffusivity, mm2/s 14
8.5
Thermal Shock Resistance, points 18 to 20
39

Alloy Composition

Carbon (C), % 0.32 to 0.38
0 to 0.080
Cobalt (Co), % 0
0.2 to 0.8
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 98.5 to 99
0 to 0.3
Manganese (Mn), % 0.7 to 1.0
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.35
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
97.9 to 99.76
Residuals, % 0
0 to 0.4