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ASTM A266 Carbon Steel vs. Grade 7 Titanium

ASTM A266 carbon steel belongs to the iron alloys classification, while grade 7 titanium belongs to the titanium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A266 carbon steel and the bottom bar is grade 7 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
150
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 21 to 26
24
Fatigue Strength, MPa 170 to 200
250
Poisson's Ratio 0.29
0.32
Reduction in Area, % 34 to 43
34
Shear Modulus, GPa 73
38
Shear Strength, MPa 320 to 380
270
Tensile Strength: Ultimate (UTS), MPa 500 to 600
420
Tensile Strength: Yield (Proof), MPa 230 to 290
340

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 to 52
22
Thermal Expansion, µm/m-K 12
9.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
7.2

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.4
47
Embodied Energy, MJ/kg 18 to 19
800
Embodied Water, L/kg 46 to 47
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
95
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
560
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 18 to 21
26
Strength to Weight: Bending, points 18 to 20
28
Thermal Diffusivity, mm2/s 14
8.9
Thermal Shock Resistance, points 16 to 19
31