ASTM B16.5 TG RJ Titanium Lap Joint Stub End Butt Weld Fitting Lap
Joint Flange
Common brands: GR1, Gr2, GR7, Gr12
Executive Standards: GB / t2965, GB / t228, GB / t2039, GB /
t3620.1, GB / t3620.2, GB / t4338, GB / t4698, GB / t5168,
Conventional: DN 10 ~ 1500 mm
Process: forging, rolling, calendering
Connection: flat welding, butt welding, socket welding, loose
sleeve, thread
Sealing: plane, concave surface, concave convex surface, groove
surface, ring joint surface
Surface: Forged surface, rolled surface, smooth surface, polished
surface
State: annealing (m) hot working (R) cold working (y)
Application: aerospace, shipping, machinery, petroleum, chemical
equipment, etc
| Chemical requirements |
| N | C | H | Fe | O | Al | V | Pd | Mo | Ni | Ti |
| Gr1 | 0.03 | 0.08 | 0.015 | 0.20 | 0.18 | / | / | / | / | / | bal |
| Gr2 | 0.03 | 0.08 | 0.015 | 0.30 | 0.25 | / | / | / | / | / | bal |
| Gr5 | 0.05 | 0.08 | 0.015 | 0.40 | 0.20 | 5.5~6.75 | 3.5~4.5 | / | / | / | bal |
| Gr7 | 0.03 | 0.08 | 0.015 | 0.30 | 0.25 | / | / | 0.12~0.25 | / | / | bal |
| Gr12 | 0.03 | 0.08 | 0.015 | 0.30 | 0.25 | / | / | / | 0.2~0.4 | 0.6~0.9 | bal |
| Tensile requirements |
| Grade | Tensile srength(min) | Yeild strength(mm) | Elongation(%) |
| KSI | MPa | Ksi | MPa | |
| 1 | 35 | 240 | 20 | 138 | 24 |
| 2 | 50 | 345 | 40 | 275 | 20 |
| 5 | 130 | 895 | 120 | 828 | 10 |
| 7 | 50 | 345 | 40 | 275 | 20 |
| 12 | 70 | 438 | 50 | 345 | 18 |
