ASTM B381 Gr 7 Titanium Alloy Flange Gr F7 Forging Titanium Flange
We are a professional manufacturer of ASTM B381 Gr 7 Titanium Alloy Flange Gr F7 Titanium Flange in China.
The ASTM B381 Gr 7 flange is a product made from Grade 7 titanium, conforming to ASTM B381, a specification covering titanium and titanium alloy forgings for various industrial applications
ASTM B381 Grade 7 Ti-0.15Pd Alloy (UNS R52400)
Grade 7 Ti-0.15Pd alloy is highly resistant to corrosion in reducing acids and localized attack in hot halide media. The presence of palladium helps to enhance the alloy’s corrosion resistance. This alloy is similar to grade 2, and possesses medium strength and ductility.
Ti Grade 7 is an unalloyed titanium grade with standard oxygen content and addition of palladium. The grade is characterized by excellent corrosion resistance in reducing and oxidizing environments
ASTM-B-381 Standard Specification for Titanium and Titanium Alloy Forgings
This specification covers 39 grades of annealed titanium and titanium alloy forgings as follows:
1.1.1 Grade F-1—UNS R50250. Unalloyed titanium,
1.1.2 Grade F-2—UNS R50400. Unalloyed titanium,
1.1.2.1 Grade F-2H—UNS R50400. Unalloyed titanium (Grade 2 with 58 ksi (400 MPa) minimum UTS),
1.1.3 Grade F-3—UNS R50550. Unalloyed titanium,
1.1.4 Grade F-4—UNS R50700. Unalloyed titanium,
1.1.5 Grade F-5—UNS R56400. Titanium alloy (6 % aluminum, 4 % vanadium),
1.1.6 Grade F-6—UNS R54520. Titanium alloy (5 % aluminum, 2.5 % tin),
1.1.7 Grade F-7—UNS R52400. Unalloyed titanium plus 0.12 to 0.25 % palladium,
The following sections will discuss in detail about grade F- 7 Ti-0.15Pd alloy.
Chemical Composition
The chemical composition of grade 7 Ti-0.15Pd alloy is outlined in the following table.
Titanium Gr 7 Equivalent Material
| Type | ASTM | JIS | DIN | GB |
| Ti-Pd | Gr7
UNS R52400 |
TP340Pb | 3.7235 | TA9 |
Titanium Gr 7 Chemical Composition, %, Max
| Ti | C | Fe | H | Pd | O | N |
| Bal | 0.08 | 0.30 | 0.015 | 0.12 – 0.25 | 0.25 | 0.03 |
Titanium Gr 7 Mechanical Properties
| Tensile strength, min | Yield strength, 0.2% offset, min, Mpa | Elongation at Break, % | Density |
| 345 | 275 | 20 | 0.163 lb/in3 |
Flanges Types of ASTM B381 Gr 7 Flanges:
- Weld Neck Flanges
- Slip-On Flanges
- Blind Flanges
- Threaded Flanges
- Socket Weld Flanges
- Lap Joint Flanges
ASTM B381 Gr 7 Flanges specification:
Grades: Grade 7 Ti-0.15Pd alloy
Size: 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Class: 150#, 300#, 825#, 900#, 1500# & 2500#
Flange type: Blind, Threaded, Socket welding, Slip-on, Lapped (lap joint), Weld neck
Face type: Flat Face, Raised Face, Male and Female Face, Tongue and Groove Face, Ring Joint Fac
Applications of ASTM B381 Gr 7 Flanges
- Aerospace: Aircraft components and jet engine parts.
- Chemical Processing: Heat exchangers, piping, and reactors due to its resistance to aggressive chemicals.
- Marine Applications: Propeller shafts, offshore platforms, and ship components.
