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Grade-2 is widely used because it combines excellent formability and moderate strength with superior corrosion resistance. This combination of properties makes grade-2 titanium a candidate for a large variety of chemical, marine, aerospace and medical applications. In the chemical industry, it’s used for: condensers, evaporators, reaction vessels for chemical processing, tubing and tube headers in desalinization plants and cryogenic vessels. Other uses have included items such as jugs, baskets, cathodes and starter-sheet blanks for the electroplating industry.
| Weight % | C | H | Fe | N | O | Ti |
|---|---|---|---|---|---|---|
| minimum | — | — | — | — | — | Bal. |
| maximum | 0.10 | 0.015 | 0.30 | 0.030 | 0.25 |
| Characteristics | English | Metric | |
|---|---|---|---|
| Nominal density | 25°C / 78°F | 0.163 lbs/in3 | 4.51 g/cm3 |
| Melting point | 3029 °F | 1665 °C | |
| Specific heat | 25°C / 78°F | 0.125 BTU/lb- °F | 523 J/Kg- °K |
| Coefficient of thermal
expansion From 20°C to temperature |
100°C / 212°F | 4.78 µin/in- °F | 8.60 µm/m- °K |
| 315°C / 599°F | 5.11 µin/in- °F | 9.20 µm/m- °K | |
| 540°C /1000°F | 5.39 µin/in- °F | 9.70 µm/m- °K | |
| Thermal conductivity | 100-300°C
(212-572°F) |
9.48 BTU/ft- hr – °F | 16.40 W/m – °K |
| Electrical resistivity | 25°C / 78°F | 520 nΩ · m | |
| Treatment | Tensile | Hardness | |||||
|---|---|---|---|---|---|---|---|
| Ultimate | Yield | Elongation
at break |
Reduction
of area |
Rockwell B | |||
| KSI | MPa | KSI | MPa | % | % | ||
| Typical | 49.9 | 344 | 39.9-59.5 | 275-410 | 20.0 | 35.0 | 80 |
| Annealed | 62.4 | 430 | 49.3 | 340 | 28.0 | — | 98 |
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