High-Quality Titanium Tube and Pipe Suppliers | China Factory ASTM B338 Standards
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 tensile strength of titanium alloy is 686–1176 MPa, 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.
Below 550°C, the surface rapidly forms a thin and dense oxide film. This gives titanium better corrosion resistance than most stainless steels in oxidizing media such as atmosphere, sea water, nitric acid, sulfuric acid, and strong alkali.
ASTM standards (ASTM B338/ASME SB338, ASTM B265/ASME SB265, ASTM B348/ASME SB348, and ASTM B381/ASME SB381) cover multiple grades including GR1, GR2, GR5, GR7, GR9, and GR12.
Titanium is biocompatible — the human body tolerates it well. It is also nonmagnetic, an increasingly important trait as MRI becomes more common in medical diagnostics.
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Titanium Tube Tensile Requirements
| Grade | Tensile Strength, Min | Yield Strength, 0.2% Offset Yield | Elongation in 2 in. or 50 mm, 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 |















