ASTM B363
ASTM B363
Seamless and Welded Unalloyed Titanium and Titanium Alloy Welding Fittings
ASTM B363 is a standard specification for titanium and titanium alloy fittings. It covers the chemical and mechanical requirements for six grades of titanium and titanium alloy fittings, designated as Grades 1, 2, 3, 7, 9, and 11. The standard also includes requirements for heat treatment, testing, and inspection of the fittings. The fittings covered by this standard include elbows, tees, crosses, reducers, caps, and stub ends, which are made by either wrought or cast methods. The purpose of ASTM B363 is to ensure that titanium and titanium alloy fittings produced by manufacturers meet a set of minimum requirements for their intended use in various industrial applications.
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| GradeA | Pipe | Tube | Plate | Bar and Billet | Casting | Forging |
|---|---|---|---|---|---|---|
| WPT1 | B 861/B 862 Grade 1 | B 338 Grade 1 | B 265 Grade 1 | B 348 Grade 1 | B 367 Grade C1 | B 381 Grade F-1 |
| WPT2 | B 861/B 862 Grade 2 | B 338 Grade 2 | B 265 Grade 2 | B 348 Grade 2 | B 367 Grade C2 | B 381 Grade F-2 |
| WPT3 | B 861/B 862 Grade 3 | B 338 Grade 3 | B 265 Grade 3 | B 348 Grade 3 | B 367 Grade C3 | B 381 Grade F-3 |
| WPT7 | B 861/B 862 Grade 7 | B 338 Grade 7 | B 265 Grade 7 | B 348 Grade 7 | B 367 Grade C7 | B 381 Grade F-7 |
| WPT9 | B 861/B 862 Grade 9 | B 338 Grade 9 | B 265 Grade 9 | B 348 Grade 9 | … | B 381 Grade F-9 |
| WPT11 | B 861/B 862 Grade 11 | B 338 Grade 11 | B 265 Grade 11 | B 348 Grade 11 | B 367 Grade C11 | B 381 Grade F-11 |
| WPT12 | B 861/B 862 Grade 12 | B 338 Grade 12 | B 265 Grade 12 | B 348 Grade 12 | … | B 381 Grade F-12 |
| WPT13 | B 861/B 862 Grade 13 | B 338 Grade 13 | B 265 Grade 13 | B 348 Grade 13 | … | B 381 Grade F-13 |
| WPT14 | B 861/B 862 Grade 14 | B 338 Grade 14 | B 265 Grade 14 | B 348 Grade 14 | … | B 381 Grade F-14 |
| WPT15 | B 861/B 862 Grade 15 | B 338 Grade 15 | B 265 Grade 15 | B 348 Grade 15 | … | B 381 Grade F-15 |
| WPT16 | B 861/B 862 Grade 16 | B 338 Grade 16 | B 265 Grade 16 | B 348 Grade 16 | … | B 381 Grade F-16 |
| WPT17 | B 861/B 862 Grade 17 | B 338 Grade 17 | B 265 Grade 17 | B 348 Grade 17 | … | B 381 Grade F-17 |
| WPT18 | B 861/B 862 Grade 18 | B 338 Grade 18 | B 265 Grade 18 | B 348 Grade 18 | … | B 381 Grade F-18 |
| WPT19 | B 861/B 862 Grade 19 | … | B 265 Grade 19 | B 348 Grade 19 | … | B 381 Grade F-19 |
| WPT20 | B 861/B 862 Grade 20 | … | B 265 Grade 20 | B 348 Grade 20 | … | B 381 Grade F-20 |
| WPT21 | B 861/B 862 Grade 21 | … | B 265 Grade 21 | B 348 Grade 21 | … | B 381 Grade F-21 |
| WPT23 | B 861/B 862 Grade 23 | … | B 265 Grade 23 | B 348 Grade 23 | … | B 381 Grade F-23 |
| WPT24 | B 861/B 862 Grade 24 | … | B 265 Grade 24 | B 348 Grade 24 | … | B 381 Grade F-24 |
| WPT25 | B 861/B 862 Grade 25 | … | B 265 Grade 25 | B 348 Grade 25 | … | B 381 Grade F-25 |
| WPT26 | B 861/B 862 Grade 26 | B 338 Grade 26 | B 265 Grade 26 | B 348 Grade 26 | … | B 381 Grade F-26 |
| WPT27 | B 861/B 862 Grade 27 | B 338 Grade 27 | B 265 Grade 27 | B 348 Grade 27 | … | B 381 Grade F-27 |
| WPT28 | B 861/B 862 Grade 28 | B 338 Grade 28 | B 265 Grade 28 | B 348 Grade 28 | … | B 381 Grade F-28 |
| WPT33 | B 861/B 862 Grade 33 | B 338 Grade 33 | B 265 Grade 33 | B 348 Grade 33 | … | B 381 Grade F-33 |
| WPT34 | B 861/B 862 Grade 34 | B 338 Grade 34 | B 265 Grade 34 | B 348 Grade 34 | … | B 381 Grade F-34 |
| WPT35 | B 861/B 862 Grade 35 | B 338 Grade 35 | B 265 Grade 35 | B 348 Grade 35 | … | B 381 Grade F-35 |
| WPT36 | B 861/B 862 Grade 36 | B 338 Grade 36 | B 265 Grade 36 | B 348 Grade 36 | … | B 381 Grade F-36 |
| Element | Product Analysis Limits, max or Range, % | Permissible Variation in Product Analysis |
|---|---|---|
| Aluminum | 2.5 to 6.75 | +/-0.40 |
| Carbon | 0.10 | +0.02 |
| Chromium | 0.1 to 0.2 | +/-0.02 |
| Chromium | 5.5 to 6.5 | +/-0.30 |
| Hydrogen | 0.02 | +0.002 |
| Iron | 0.80 | +0.15 |
| Molybdenum | 0.2 to 0.4 | +/-0.03 |
| Molybdenum | 1.5 to 4.5 | +/-0.20 |
| Molybdenum | 14.0 to 16.0 | +/-0.50 |
| Nickel | 0.3 to 0.9 | +/-0.05 |
| Niobium | 2.2 to 3.2 | +/-0.15 |
| Niobium†| >30 | +/-0.50 |
| Nitrogen | 0.05 | +0.02 |
| Oxygen | 0.30 | +0.03 |
| Oxygen | 0.31 to 0.40 | +/-0.04 |
| Palladium | 0.01 to 0.02 | +/-0.002 |
| Palladium | 0.04 to 0.08 | +/-0.005 |
| Palladium | 0.12 to 0.25 | +/-0.02 |
| Ruthenium | 0.02 to 0.04 | +/-0.005 |
| Ruthenium | 0.04 to 0.06 | +/-0.005 |
| Ruthenium | 0.08 to 0.14 | +/-0.01 |
| Silicon | 0.06 to 0.40 | +/-0.02 |
| Vanadium | 2.0 to 4.5 | +/-0.15 |
| Vanadium | 7.5 to 8.5 | +/-0.40 |
| Zirconium | 3.5 to 4.5 | +/-0.20 |
| ResidualsA (each) | 0.15 | +0.02 |
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