High-Quality Titanium Tubes and Pipes from China's Leading Suppliers and Factory - ASTM B338 Standard
To Know About Titanium Tube
Titanium tube has the advantages of light weight, high strength and superior mechanical properties. It is widely used in heat exchange equipment, such as tubular heat exchanger, coil heat exchanger, serpentine tube heat exchanger, condenser, evaporator and conveying pipeline. Many nuclear power plants use titanium tube as the standard tube for their units.
The seamless titanium tube has high strength. The tensile strength of titanium alloy is 686-1176mpa, and the density is only about 60% of that of steel, so the specific strength is very high. The hardness of titanium alloy (annealed) is HRC32-38.
Seamless titanium tube also has strong corrosion resistance. Titanium at 550℃ in the air below, the surface will form thin and dense rapidly. Therefore, the corrosion resistance of titanium oxide film is better than that of most stainless steel in the oxidizing medium such as atmosphere, sea water, nitric acid and sulfuric acid and strong alkali.
Another great thing about titanium is that, just as there are different types of stainless steel, copper, nickel, there are many different grades of titanium tube.
For instance, ASTM has a variety of standards (principally ASTM B338/ASME SB338, ASTM B265/ASME SB265, ASTM B348/ASME SB348, and ASTM B381/ASME SB381) relating to the "recipes" for titanium grades used in different applications. If you look at the specs, you will see there are even multiple grades for unalloyed titanium, e.g. GR1, GR2, GR5, GR7, GR9 and GR12 etc.
Another advantage of titanium tube in medical devices is that it is biocompatible. Not only can the human body tolerate the use of titanium (which is important enough), but it is also nonmagnetic — an increasingly important trait as the use of magnetic resonance imaging (MRI) becomes more common in medical diagnostics.
Product Display
Titanium Tube Tensile Requirements
| Grade | Tensile Strength, min | Yield Strength, 0.2% offset Yield | Elongation in 2 in. or 50mm, Min. % | ||||
| Ksi | Mpa | Min. | Max. | ||||
| Ksi | Mpa | Ksi | Mpa | ||||
| 1 | 35 | 240 | 20 | 138 | 45 | 310 | 24 |
| 2 | 50 | 345 | 40 | 275 | 65 | 450 | 20 |
| 3 | 65 | 450 | 55 | 380 | 80 | 550 | 18 |
| 5 | 130 | 895 | 120 | 828 | 10 | ||
| 7 | 50 | 345 | 40 | 275 | 65 | 450 | 20 |
| 9A | 90 | 620 | 70 | 483 | 15C | ||
| 9B | 125 | 860 | 105 | 725 | 10 | ||
| 11 | 35 | 240 | 20 | 138 | 45 | 310 | 24 |
| 12 | 70 | 483 | 50 | 345 | 18C | ||
| 16 | 50 | 345 | 70 | 275 | 65 | 450 | 20 |
| 17 | 35 | 240 | 20 | 138 | 45 | 310 | 24 |
Frequently Asked Questions
What are the main applications of titanium tubes?
Titanium tubes are widely used in heat exchange equipment, including tubular, coil, and serpentine heat exchangers, as well as condensers, evaporators, conveying pipelines, and as standard units in nuclear power plants.
Why do seamless titanium tubes have such high specific strength?
Seamless titanium tubes have a high tensile strength of 686-1176 MPa, while their density is only about 60% of steel, giving them an exceptionally high strength-to-weight ratio.
How does a titanium tube resist corrosion?
At temperatures below 550℃ in air, titanium rapidly forms a thin, dense, and highly protective oxide film on its surface. This film provides superior corrosion resistance compared to most stainless steels in oxidizing media like atmosphere, seawater, nitric acid, sulfuric acid, and strong alkalis.
What are the common ASTM standards for titanium tubes?
The principal ASTM/ASME standards for titanium tubes include ASTM B338/ASME SB338, ASTM B265/ASME SB265, ASTM B348/ASME SB348, and ASTM B381/ASME SB381, covering various grades like GR1, GR2, GR5, GR7, GR9, and GR12.
Why are titanium tubes suitable for medical devices?
Titanium is highly biocompatible, meaning it is well-tolerated by the human body. Additionally, it is nonmagnetic, which is a crucial safety feature for patients undergoing magnetic resonance imaging (MRI) diagnostics.