scope:

This specification covers the requirements for 21 grades of titanium and titanium alloy tubing intended for surface condensers, evaporators, and heat exchangers, as follows:

Grade 1 - Unalloyed titanium,

Grade 2 - Unalloyed titanium,

Grade 3 - Unalloyed titanium,

Grade 7 - Unalloyed titanium plus 0.12 to 0.25 % palladium,

Grade 9 - Titanium alloy (3 % aluminum, 2.5 % vanadium),

Grade 11 - Unalloyed titanium plus 0.12 to 0.25 % palladium, Grade 12 - Titanium alloy (0.3 % molybdenum, 0.8 % nickel),

Grade 13 - Titanium alloy (0.5 % nickel, 0.05 % ruthenium), Grade 14 - Titanium alloy (0.5 % nickel, 0.05 % ruthenium), Grade 15 - Titanium alloy (0.5 % nickel, 0.05 % ruthenium), Grade 16 - Unalloyed titanium plus 0.04 to 0.08 % palladium, Grade 17 - Unalloyed titanium plus 0.04 to 0.08 % palladium, Grade 18 - Titanium alloy (3 % aluminum, 2.5 % vanadium) plus 0.04 to 0.08 % palladium, Grade 26 - Unalloyed titanium plus 0.08 to 0.14 % ruthenium, Grade 27 - Unalloyed titanium plus 0.08 to 0.14 % ruthenium, Grade 28 - Titanium alloy (3 % aluminum, 2.5 % vanadium) plus

0.08 to 0.14 % ruthenium, Grade 30 - Titanium alloy (0.3 % cobalt, 0.05 % palladium), Grade 31 - Titanium alloy (0.3 % cobalt, 0.05 % palladium), Grade 33 - Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium), Grade 34 - Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium), and Grade 35 - Titanium alloy (4.5 % aluminum, 2 % molybdenum, 1.6 % vanadium, 0.5 % iron, 0.3 % silicon). Tubing covered by this specification shall be heat treated by

at least a stress relief as defined in 5.3. The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.