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What are the advantages of using Titanium Ferrule Fittings in high-temperature?
Titanium Gr5 double ferrule fittings get coveted in marine industries, medical instruments, and power generation.
Note that the corrosion resistance of a UNS R56400 ferrule fitting does not cover (even dilute) hydrofluoric acid; it can cause cracking and embrittlement.
Table of Content
Specification of Titanium Ferrule Fittings
Ti Alloy Tube Fittings Delivery Schedules
| Country Name | Vietnam | Indonesia | Singapore | Malaysia | Thailand | Japan | Sri Lanka |
|---|---|---|---|---|---|---|---|
| Delivery Time | 8-10 days | ||||||
Mechanical Properties of Titanium Gr 5 Compression Fittings
| Grade | Density | Elongation | Tensilestrength | Melting point | Yieldstrength(0.2%Offset) |
|---|---|---|---|---|---|
| Titanium grade 2 | 4.5 g/cm3 | 20% | Psi-49900, MPa-344 | 1665°c(3030°F) | PSi-39900, MPa-275 |
| Titanium grade 5 | 4.43 g/cm3 | 14% | Psi-138000, MPa-950 | 1632°c(2970°F) | PSi-128000, MPa-880 |
Equivalent Grade of CP Titanium Double Ferrule Fitting
| Grade | UNS | Werkstoff Nr. |
| Titanium grade 2 | R50400 | 3.7035 |
| Titanium grade 5 | R56400 | 3.7165 |
What is the difference between Grade 2 and Grade 5 Titanium Ferrule Fittings?
Titanium Gr2 ferrule fittings refers to commercially pure titanium (over 98.9%). Grade 5 differs in its chemical composition and possesses superior metallurgical properties. They also get called Ti-6AL-4V tube fittings because of the included aluminium and vanadium (6 and 4%).
| Grade 2 | Grade 5 | |
| Strength | 344 MPa | Higher (950 MPa) Can be age-hardened for more strength |
| Cost | Lower | Expensive |
| Scratch Resistance | Lower | Excellent |
| Machinability | Higher | Lower |
Although Grade 5 can deliver enhanced properties for some sectors, Ti Gr 2 DIN 3.7165 instrumentation fittings are also excellent options for pharmaceuticals, gas processing, and heat exchangers.
Applications of Pure Titanium Instrumentation Fittings
Types of CP Ti Tube Fittings
Titanium instrumentation fittings
Titanium compression tube fittings
Ti ferrule fittings
Titanium grade 2 ferrule fittings
Pressure Ratings of Titanium Ferrule Tube Fittings
| NPT/ ISO size(inch). | TITANIUM | |
|---|---|---|
| Female | Male | |
| PSIG (bar) | PSIG (bar) | |
| 3/8 | 4 200 (289) | 6 200 (427) |
| 1/8 | 5 200 (358) | 8 000 (551) |
| 1/2 | 3 900 (268) | 6 100 (420) |
| 1 | 3 500 (241) | 4 200 (289) |
| 3/4 | 3 600 (248) | 5 800 (399) |
| 1 1/4 | 4 000 (275) | 4 800 (330) |
| 2 | 3 100 (213) | 3 100 (213) |
| 1/16 | 5 300 (365) | 8 800 (606) |
| 1/4 | 5 200 (358) | 6 400 (440) |
| 1 1/2 | 3 600 (248) | 4 000 (275) |
What are the most common testing methods used to ensure the quality and reliability of Titanium Ferrule Fittings? How do they differ from one another?
These robust components undergo different tests, including destructive and non-destructive. While ASTM B338 titanium tube fittings can get assessed via traditional approaches like Charpy impact tests, contemporary methods include optical emission spectrometry and X-ray fluorescence testing.
fluorescence testing. Destructive tests on titanium instrumentation fittings include static, impact, and cyclic procedures. These products get thoroughly examined for pitting resistance, intergranular corrosion, hardness, and chemical composition, via spectrometry.
Mechanical tests on titanium grade 5 compression fittings cover essential characteristics like tensile strength and elongation.
Dimension of Ti-6al-4v Ferrule Fitting
| OD | OD | Thread designation - nominal size | Thread / inch | |
|---|---|---|---|---|
| (fraction inch) | (inches) | (inches) | BSP | NPT |
| 43/64 | 0.675 | 3/8 | 19 | 18 |
| 5/16 | 0.3125 | 1/16 | 28 | 27 |
| 13/32 | 0.405 | 1/8 | 28 | 27 |
| 35/64 | 0.540 | 1/4 | 19 | 18 |
| 27/32 | 0.840 | 1/2 | 14 | 14 |
| 1-3/64 | 1.050 | 3/4 | 14 | 14 |
| 1-5/16 | 1.315 | 1 | 11 | 11-1/2 |
| 1-21/32 | 1.660 | 1-1/4 | 11 | 11-1/2 |
| 1-29/32 | 1.900 | 1-1/2 | 11 | 11-1/2 |
| 2-3/8 | 2.375 | 2 | 11 | 8 |
| 2-7/8 | 2.875 | 2-1/2 | 11 | 8 |
| 4 | 4.0 | 3-1/2 | 11 | 8 |
| 4-1/2 | 4.5 | 4 | 11 | 8 |
| 3-1/2 | 3.5 | 3 | 11 | 8 |
| 5-5/8 | 5.563 | 5 | 11 | 8 |
| 6-5/8 | 6.718 | 6 | 11 | 8 |
Chemical Composition of Ti Instrumentation Fittings
| Grade | Al | N | C | V | O | Ti | H | Fe |
|---|---|---|---|---|---|---|---|---|
| Titanium grade 2 | - | 0.03 max | 0.10 max | - | 0.25 max | bal | 0.015 max | 0.30 max |
| Titanium grade 5 | 6 min | - | - | 4 min | 0.02 max | 90 min | - | 0.25 max |
Frequently Used Types of Ti-6AL-4V Gr 5 Compression Tube Fittings
| Male Connector | Male Bulkhead Connector | Female Connector | Female Bulkhead Connector | Male Elbow | Male to Male Elbow |
| Male Adaptor | Tube End Reducer | Female Adaptor | OD Plug | OD Cap | Bulkhead Lock Nut |
| Straight Union | Reducing Union | Bulkhead Union | Union Elbow | Union Tee | Union Cross |
| Female Elbow | Male Run Tee | Male to Female Elbow | Male Branch Tee | Female Run Tee | Female Branch Tee |