Titanium Grade 7
W.Nr 3.7235
Description
Titanium Grade 7 has physical and mechanical properties similar to Grade 2. It has excellent welding and fabrication properties and is extremely resistant to corrosion especially from acids due to the addition of palladium.
Industries Supplied
Chemical Processing and production equipment components.
Nominal Composition
Fe: 0.30 max
O: 0.25 max
C: 0.08 max
N: 0.03 max
H: 0.0150 max
Pd: 0.20 max
Ti: Balance
Physical Properties
Density: 0.163 lb/in3, (4.51 g/cm3)
Modulus of Elasticity (E):
At 70°F (20°C): 16.3 x 103 ksi (112 GPa)
Modulus of Rigidity (G)
At 70°F (20°C): 5.9 x 103 ksi (41 GPa)
Coefficient of Expansion:
5.4 µin/in.-°F (70°F to 932°F)
9.7 µm/m-°C (20°C to 500°C)
Electrical Resistivity: 21 µΩ.in, (53.3 µΩ.cm)
Thermal Conductivity: 12.6 Btu-in/ft2hr-°F, (21.79 W/m-K)
Applicable Specifications
Strip and Foil: ASTM B265
Typical Mechanical Properties
- Annealed
- Heat Treatment: 1290°F
- Tensile Strength: 50 ksi (345 MPa) min – 65 ksi (448 MPa) typ
- Suggested Operating Conditions: -300°F to 1000°F (-184°C to 540°C)
For further information Contact:
Contact Us
Phone: 1 888 843 2350
Elgiloy Specialty Metals – Strip Products
1565 Fleetwood Dr.
Elgin, IL 60123 USA
Limitation of Liability and Disclaimer of Warranty:
- The content in these data sheets is provided primarily by third-party melting mills and is provided for reference only. It is not intended for engineering or design.
- Applications may be discussed, however, Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, does not recommend or endorse any material for any particular end use or application.
- The data included in this data sheet are typical values and may vary.
- Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, makes no representations or warranties, express or implied, as to the accuracy, completeness, condition, suitability, performance, fitness for a particular purpose, or merchantability of any information contained in any data sheet.
In no event will Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, be liable for any damages whatsoever arising from the use of the information included in the data sheets.
Additional Information on Titanium Grade 7
When you examine Titanium Grade 7 plating, the first thing that you will notice is that it is very similar to the Grade 2 alloy. Physically and mechanically it is the exact same. The same level of corrosion resistance, the same weldability, and same level of ductility. The question can be asked, if they are so similar, why are there two different grades for seemingly the same alloy. This is due to the fact that Grade 7 Titanium has one slight and small difference that makes it extremely valuable to one industry in particular.
Grade 7 Titanium alloy contains a small amount of palladium. This small amount actually adds to the level of corrosion resistance in the alloy itself, especially in the presence of acids. In fact, of all of the grades of titanium alloys, it is the most corrosion resistant one that you will find on the market. The one industry that takes advantage of this more than any other is the chemical processing industry.
In chemical processing, you will often find machinery that has extremely volatile chemicals passing through, and being stored within it. It is commonly known that acids eat away at anything it comes in contact with, therefore the metals that are used to build these machines and storage units must be able to handle having acids within them for very long periods of time. Due to the small amount of palladium, Grade 7 Titanium is perfect for the job. Also, it maintains this level of resistance in both extremely hot and extremely cold temperatures. No matter what the environment is, Titanium Grade 7 is up to the task. Also, because the plating is identical to Grade 2 in every other way, it can be welded and formed into any shape or size. This means you will not have to worry about how to get a piece of alloy that needs to be formed into a peculiar shape, Grade 7 can be made to fit it.
