Non-Ferrous Metals Fittings
Pipe fittings change the direction, size or branch of a piping system: elbows, tees, reducers, caps, stub ends, crosses and couplings. Butt-weld fittings follow ASME B16.9 (and MSS SP-43 for light-wall stainless). Forged socket-weld and threaded fittings follow ASME B16.11.
Choose a grade below for specifications, composition, sizes and weight charts.
Non-Ferrous Metals fittings by grade
| Grade | Specification | Key characteristic | Typical use |
|---|---|---|---|
| Titanium Grade 1 Fittings | ASTM B363 WPT1 | Lowest-strength, most formable CP titanium | Plate heat-exchanger plates |
| Titanium Grade 2 Fittings | ASTM B363 WPT2 | Most widely used CP titanium | Condenser and heat-exchanger tubes |
| Titanium Grade 3 Fittings | ASTM B363 WPT3 | Higher strength than Grade 2 | Pressure vessels and heat-exchanger shells |
| Titanium Grade 4 Fittings | ASTM B363 WPT4 | Highest-strength CP titanium | Airframe and aero-engine components |
| Titanium Grade 5 Fittings | ASTM B363 WPT5 | Ti-6Al-4V alpha-beta alloy | Aerospace structures and engine parts |
| Cupro-Nickel 90/10 Fittings | EEMUA 146 / to order | Standard for seawater piping | Ship and offshore seawater piping |
| Cupro-Nickel 70/30 Fittings | To order | About 30% nickel | Power-station condenser tubes |
How non-ferrous metals fittings are made, sized and tested
How it's madeButt-weld fittings are formed from seamless or welded pipe or plate by hot or cold forming (mandrel bending, hydraulic bulging, pressing), then heat treated, bevelled and finished. Socket-weld and threaded fittings are machined from forgings or bar.
- Size range
- Butt-weld ½" – 48" (larger fabricated to order) in schedules matching the pipe; socket-weld and threaded ⅛" – 4" in Class 2000, 3000, 6000 and 9000
- Finish
- Annealed & pickled, shot-blasted, black painted or galvanised (by material)
- Ends
- Bevelled (butt-weld), socket-weld, threaded NPT/BSP
Testing & documents
- Chemical and mechanical tests of the starting material
- Dimensional inspection to B16.9 / B16.11
- Radiography of welded fittings (seamed WPW/WX)
- Hardness, IGC and impact tests as specified
- EN 10204 3.1 certificate; 3.2 with third-party inspection
Frequently asked questions
What is the difference between WP and F designations?
WP (wrought pipe fitting) grades such as A403 WP316L cover butt-weld fittings. F grades such as A182 F316L cover forged fittings and flanges.
What is a long-radius elbow?
An elbow whose centreline radius is 1.5 × NPS. Short-radius elbows have a radius equal to NPS.
Which non-ferrous metals grades are available as fittings?
Titanium Grade 1, Titanium Grade 2, Titanium Grade 3, Titanium Grade 4, Titanium Grade 5, Cupro-Nickel 90/10, Cupro-Nickel 70/30.
Which specifications cover non-ferrous metals fittings?
ASTM B363, EEMUA 146, To order, depending on grade.
Need non-ferrous metals fittings?
Send grade, size, quantity and destination.