Full Description

1.1This specification covers tantalum and tantalum alloy seamless and welded tubes of the following grades:

1.1.1UNS Grade R05400-Unalloyed tantalum, powder-metallurgy consolidation,

1.1.2UNS Grade R05200-Unalloyed tantalum, vacuum melted,

1.1.3UNS Grade R05252-Tantalum+2.5% tungsten alloy, vacuum melted.

1.1.4UNS Grade R05255-Tantalum+10% tungsten alloy, vacuum melted.

1.1.5UNS Grade R05240-Tantalum alloy, 60% tantalum, 40% niobium, electron-beam furnace or vacuum arc melt, or both.

1.2The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.