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Titanium Grade 1
The presence of small amounts of oxygen and iron influences the mechanical properties of commercially pure titanium alloys. Grade 1 unalloyed Ti ("Pure") 35A alloy contains the lowest oxygen and iron levels, thereby making this grade the most formable of material. This alloy has the highest purity.
Grade 1 has excellent resistance to mildly reducing to highly oxidizing media with or without chlorides, high weldability, good impact toughness, and excellent room-temperature ductility. It is non-magnetic.
Chemical Composition Titanium Grade 1
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Titanium Grade 1
|
Cr |
Cu |
Ni + Mo
|
Ta |
N
|
C
|
H
|
O
|
P
|
--
|
-- |
--
|
--
|
0,03 max
|
0.08 max
|
0,01 max |
0.18 max
|
-- |
| Fe |
S |
Ti |
Nb/Cb |
Mo |
AI |
Co |
W |
Residuals |
0.20 max
|
-- |
balance |
-- |
-- |
-- |
--
|
--
|
0.40 max |
Applications of Titanium Grade 1
Grade 1 unalloyed Ti ("Pure") 35A alloy is used in the following application areas:
- Navy ship components
- Food processing/pharmaceutical
- Chemical processing equipment
- Anode/cathode/cell components
- Hydrocarbon refining/processing
- Pulp/paper bleaching/washing equipment
- Desalination, brine concentration/evaporation
- Hydrometallurgical extraction/electrowinning
- Medical implants/devices, surgical instruments
- Consumer products such as watches and eyeglass frames
Physical Properties
Physical Properties
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| Density |
Metric |
English |
Comments |
| 4.51 g/cm3 |
0.163 lb/in3 |
|
| Mechanical Properties |
| |
Feature |
Comments |
| Tensile Strength, Ultimate |
345 MPa |
50 Ksi |
|
| Approx. operating temperature |
-- |
-- |
-300°F to 1000°F (-184°C to 540°C) |
| Tensile Strength, Yield |
220 MPa |
31.9 Ksi |
|
| Hardness, Rockwell B (converted from Brinell hardness) |
115 |
115 |
-- |
| Elongation at break |
35.0% |
35.0% |
|
| Elongation at Break at Elevated Temperature |
-- |
-- |
-- |
| Electrical Properties |
| Electrical Resistivity |
21 µΩ.in |
53.3 µΩ.cm |
|
| Magnetic Permeability |
-- |
-- |
-- |
| Curie Temperature |
-- |
-- |
|
| Thermal Properties |
| CTE, linear 20°C |
-- |
-- |
-- |
| Specific Heat Capacity |
-- |
-- |
--
|
| Thermal Conductivity |
21.79 W/m-K |
12.6 BTU-in/hr-ft²-°F |
|
| Melting Point |
1670 °C |
3040 °F |
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| Modulus of Elasticity |
105 - 120 kN/mm2 |
15230 - 17400 ksi |
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| Modulus of Rigidity |
40 - 45 kN/mm2 |
5800 - 6530 ksi |
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| Coefficient of Expansion, 10-6 |
8.6 μm/m °C (20 – 100°C) |
4.8 x 10-6 in/in °F (70 – 212°F) |
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Titanium Grade 1 Corrosion Resistance
Titanium has excellent resistance to corrosion in a wide variety of environments including seawater, salt brines, inorganic salts, bleaches, wet chlorine, alkaline solutions, oxidizing acids, and organic acids. Titanium is incompatible with fluorides, strong reducing acids, very strong caustic solutions, and anhydrous chlorine. Due to its combustibility, titanium is not suitable for pure oxygen service. Titanium does not release any toxic ions into aqueous solutions, thus helping to prevent pollution.
Titanium Grade 1 Hot Working
Hot working enhances the overall ductility of the material.
Cold Working
Cold working features of this material is the same as that of a moderately tempered austenitic stainless steel. Post-work annealing is recommended to re-attain favourable performance properties.
Titanium Grade 1 Machining
Grade 1 unalloyed Ti ("Pure") 35A alloy is hard to machine but can be successfully done using slow speeds, high coolant flow, and high feed rates. Tooling should be performed using tungsten carbide designations C1-C4 or cobalt-type high-speed tools.
Forming
Grade 1 unalloyed Ti ("Pure") 35A alloy can be hot or cold formed using power brake, hydropress, stretch or drop hammer methods.
Conclusion
Titanium alloys are among the most useful and plentiful alloys used in a number of different industries. There are many different grades of titanium alloys that all have their unique strengths. Therefore, it is vitally important that the right grade is chosen to complete the job at hand. Particularly when you are selecting the right alloy in strip form. While it is softer than the other grades of titanium, it is still very useful for a variety of different uses.
Grade 1 Titanium is the softest and most ductile of all the titanium alloys on the market today. However, it also contains the highest purity level. This means that it is extremely weldable, allowing it to be versatile to the person wishing to use it. Furthermore, it has great corrosion resistance, and superb impact properties when temperatures are low. While it is not age-hardenable, Titanium Grade 1 does have a variety of surface conditions.
Useful in the chemical processing and aerospace industries, Titanium Grade 1 is the most widely available titanium alloy that can be found. One such piece of machinery that you can find Grade 1 Titanium is in a heat exchanger. This is because of its versatility and the fact that it holds up well in extreme temperatures. It is also used in marine environments because of its corrosion resistance. Many times, metals will rust and deteriorate in salty water, so it is important to find an alloy that can handle these conditions. Also, the medical and automotive industries make use of the alloy because of its formability. You can make it work in any shape or size and it will maintain all of the same properties regardless of its size and shape. This is also true for architecture because oftentimes buildings are exposed to a number of different elements, and require an alloy that can handle the exposure to a variety of elements.
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