Titanium Grade 7
Subcategory: Metal; Nonferrous Metal; Titanium Alloy; Unalloyed/Modified Titanium
Close Analogs: Titanium Grades 1,2,3,4,7,11,and 12 are all considered unalloyed and have similar mechanical properties.
Key Words: ASTM Grade 7; UNS R52400, CP titanium, C.P. titanium alloy
Component | Wt. % | | | C | Max 0.1 | | Fe | Max 0.3 | | H | Max 0.015 | | N | Max 0.03 | | O | Max 0.25 | | Pd | 0.2 | | Ti | 99 | |
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Material Notes: Titanium Grade 11 is identical (0.2% Pd) except for impurity limits. Pd added for corrosion resistance
Physical Properties | Metric | English | Comments |
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Density | 4.5 g/cc | 0.163 lb/in³ | |
Mechanical Properties |
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Hardness, Brinell | 200 | 200 | annealed |
Hardness, Knoop | 222 | 222 | Estimated from Brinell. |
Hardness, Rockwell B | 75 | 75 | annealed |
Hardness, Rockwell C | 11 | 11 | Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only. |
Hardness, Vickers | 209 | 209 | Estimated from Brinell. |
Tensile Strength, Ultimate | 344 MPa | 49900 psi | |
Tensile Strength, Yield | 275 - 410 MPa | 39900 - 59500 psi | |
Elongation at Break | 20 % | 20 % | |
Modulus of Elasticity | 105 GPa | 15200 ksi | In Tension |
Compressive Modulus | 110 GPa | 16000 ksi | |
Poisson's Ratio | 0.37 | 0.37 | |
Shear Modulus | 45 GPa | 6530 ksi | |
Electrical Properties |
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Electrical Resistivity | 5.5e-005 ohm-cm | 5.5e-005 ohm-cm | |
Thermal Properties |
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Heat of Fusion | 325 J/g | 140 BTU/lb | High Purity Ti. |
CTE, linear 20°C | 8.6 µm/m-°C | 4.78 µin/in-°F | 0-100ºC |
CTE, linear 250°C | 9.2 µm/m-°C | 5.11 µin/in-°F | Average over the range 0-315ºC |
CTE, linear 500°C | 9.7 µm/m-°C | 5.39 µin/in-°F | 0-540ºC; CTE is higher perpendicular to the c-axis |
Specific Heat Capacity | 0.523 J/g-°C | 0.125 BTU/lb-°F | value is 0.67 J/g-ºC at 540ºC |
Thermal Conductivity | 16.4 W/m-K | 114 BTU-in/hr-ft²-°F | annealed |
Melting Point | Max 1665 °C | Max 3030 °F | Liquidus |
Liquidus | 1665 °C | 3030 °F | |
Maximum Service Temperature, Air | 425 °C | 797 °F | Continuous use |
Maximum Service Temperature, Air | 540 °C | 1000 °F | Intermittent Use |
Beta Transus | 913 °C | 1680 °F | |
Optical Properties |
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Emissivity (0-1) | 0.3 | 0.3 | High purity Ti at 710°C |
Reflection Coefficient, Visible (0-1) | 0.56 | 0.56 | High purity Ti; visible light. |
References for this datasheet.
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