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ASTM A202 Steel vs. Grade 7 Titanium

ASTM A202 steel belongs to the iron alloys classification, while grade 7 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 ASTM A202 steel and the bottom bar is grade 7 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 200
150
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 17 to 18
24
Fatigue Strength, MPa 240
250
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
38
Shear Strength, MPa 360 to 410
270
Tensile Strength: Ultimate (UTS), MPa 590 to 670
420
Tensile Strength: Yield (Proof), MPa 350 to 360
340

Thermal Properties

Latent Heat of Fusion, J/g 260
420
Maximum Temperature: Mechanical, °C 410
320
Melting Completion (Liquidus), °C 1450
1660
Melting Onset (Solidus), °C 1410
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 52
22
Thermal Expansion, µm/m-K 13
9.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
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 19
800
Embodied Water, L/kg 49
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 96
95
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 350
560
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 21 to 24
26
Strength to Weight: Bending, points 20 to 22
28
Thermal Diffusivity, mm2/s 14
8.9
Thermal Shock Resistance, points 17 to 20
31