ASME SB338 / ASTM A338 GR.7 Titanium Alloy Seamless Tubes
Sep 09, 2025 ASTM-B338-Titanium.pdf
Products Description
Ti Gr.7 titanium alloy is an important high-performance titanium alloy known for its excellent mechanical properties and corrosion resistance. It is widely used in aviation, aerospace, shipbuilding, chemical engineering, and other fields.
Composition of Ti ASTM A338 GR.7 Titanium Alloy
Ti Gr.7 titanium alloy is primarily composed of titanium (Ti) and aluminum (Al), with aluminum content accounting for approximately 6%. It also contains small amounts of elements such as vanadium (V) and iron (Fe). This composition ratio gives Ti Gr.7 titanium alloy its outstanding mechanical properties and corrosion resistance.
Properties of Ti ASTM A338 GR.7 Titanium Alloy
Mechanical Properties
Ti Gr.7 titanium alloy exhibits high strength, high toughness, low density, and good fatigue resistance. Its strength is comparable to some high-strength steels, but its density is significantly lower than that of steel, making it highly promising for applications in aerospace and other fields. Additionally, Ti Gr.7 titanium alloy demonstrates excellent creep resistance and high-temperature stability, allowing it to maintain stable mechanical properties even in high-temperature environments.
Corrosion Resistance
Ti Gr.7 titanium alloy offers exceptional corrosion resistance in most media, including highly corrosive environments such as seawater, acids, and alkalis. This makes it widely applicable in chemical engineering, marine engineering, and other fields.
Applications of Ti Gr.7 Titanium Seamless Tubes
Aerospace Field
Ti Gr.7 titanium alloy is widely used in the aerospace field, such as in aircraft engine blades, aircraft landing gears, and rocket engine casings. Its high strength, low density, and excellent fatigue resistance make it an ideal material for aerospace applications.
Chemical Engineering Field
Ti Gr.7 titanium alloy is also extensively used in the chemical engineering field, such as in chemical reactors, storage tanks, and pipelines. Its outstanding corrosion resistance enables it to maintain long-term stable operation in highly corrosive environments.
Shipbuilding Field
Ti Gr.7 titanium alloy finds applications in the shipbuilding field, such as in hull structures and propellers. Its high strength, low density, and excellent corrosion resistance make it a commonly used material in shipbuilding.
Development Trends of Ti Gr.7 Exhaust Tubing
With continuous technological advancements and the expansion of application fields, the demand for Ti Gr.7 titanium alloy is steadily increasing. In the future, the development of Ti Gr.7 titanium alloy will show the following trends:
Performance Improvement
Further enhance the mechanical properties and corrosion resistance of Ti Gr.7 titanium alloy by optimizing its composition and improving preparation processes to meet more demanding application requirements.
Cost Reduction
Reduce the production cost of Ti Gr.7 titanium alloy by improving production processes and increasing material utilization, thereby enhancing its market competitiveness.
Expansion of Application Fields
With the emergence of new materials and processes, the application fields of Ti Gr.7 titanium alloy will continue to expand, including increasing use in medical devices, sports equipment, and other areas.
In summary, Ti Gr.7 titanium alloy, as an important high-performance titanium alloy, possesses excellent mechanical properties and corrosion resistance, making it highly promising for applications in aviation, aerospace, shipbuilding, chemical engineering, and other fields. In the future, with continuous technological progress and the expansion of application fields, Ti Gr.7 titanium alloy will see even broader application and development.
Titanium product forms available from GNEE
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Material
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Pure titanium and Titanium alloy
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Titanium Grade
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Grade 1-Unalloyed titanium
Grade 2-Unalloyed titanium
Grade 3-Unalloyed titanium
Grade 7-Unalloyed titanium plus 0.12 to 0.25 %palladium
Grade 9-Titanium alloy (3 % aluminum, 2.5 % vanadium)
Grade 12-Titanium alloy (0.3 % molybdenum, 0.8 % nickel),
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Standard
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ASTM B338/ASME SB338, ASTM B337/ASME SB337, ASTM B861/ASME SB861, ASTM B862/ASME SB862,AMS4911,AMS4928
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Shape
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Round Square Rectangle
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Type
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Seamless/Welded
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Seamless titanium tube: Titanium sponge-Compacting electrodes-melting-Forge-Bar billets-Extruding-Rolled-Straightening-Seamless tube
Welded titanium tube: Titanium sponge-Compacting electrodes-melting-Forge-Plate billets-Hot rolled-Cold rolled-Titanium scrap-Welded-Welded tube |
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Surface
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Polishing, picking, acid washed, black oxide
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Application
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1) General service industries (petroleum, food, chemical, paper, fertilizer, fabric, aviation and nuclear
2) Fluid, gas and oil transport
3) Pressure and heat transmission
4) Construction and ornament
5) Boiler heat exchangers
6) Motorbycle and bike
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Material Milling Certificate
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According to. EN 10204.3.1
Including Chemical composition and Mechanical property |
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Grade |
Gr1, Gr2, Gr3,Gr4,Gr5, Gr7, Gr6,Gr9, Gr11, Gr12 ,Gr16, Gr17,Gr25 |
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Size |
All sizes can be customized |
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Application |
Metallurgy, electronics, machinery, medical treatment, chemical industry, petroleum, medical treatment, aerospace |
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Feature |
High corrosion resistance, low density, good thermal stability |
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Technology |
Hot Forged, Hot Rolled, Cold Rolled, Annealing, Pickling |
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Surface |
Bright, Polished, Pickling, Acid cleaning, Sandblasting |
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Packing |
Export Standard Woodcase |
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Delivery time |
10-25days according to the quantity and process of the product |
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Quality and test |
Hardness test, Bending test, Hydrostatic etc. |
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Grade |
GR1,GR2,GR3,GR5,GR6,GR7,GR9,GR11,GR12, etc. |
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Standard |
ASTM B265,ASTM F136,ASTM F67,AMS4928 |
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Size |
0.5-5.0mm x 1000mm x 2000-3500mm (Thickness x Width x Length) |
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Application |
Metallurgy, electronics, machinery, medical treatment, chemical industry, petroleum, medical treatment, aerospace |
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Supply status |
M (Y/ R/ ST) |
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Feature |
High corrosion resistance, low density, good thermal stability |
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Technics |
Hot Forged, Hot Rolled, Cold Rolled, Annealing, Pickling |
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Surface |
Bright, Polished, Pickling, Acid cleaning, Sandblasting |
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Packing |
Export Standard Woodcase |
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Payment terms |
T/T, L/C, D/A, D/P, Escrow, Western Union, PayPal |
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Certificate |
ISO 9001:2008; The third test report; TÜV Rheinland; |
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Delivery time |
7-15days according to the quantity and process of the product |
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Quality and test |
Hardness test, Bending test, Hydrostatic etc. |
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Material |
Pure titanium and Titanium alloy |
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Titanium Grade |
GR1/GR2/GR3/Gr4/GR5/GR7/GR9/GR12/Gr5Eli/Gr23
ERTi-1/ERTi-2/ERTi-3/ERTi-4/ERTi-5Eli/ERTi-7/ERTi-9/ERTi-11/ERTi-12 Ti15333/Nitinol Alloy |
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Standard |
AWS A5.16/ASTM B863/ASME SB863, ASTMF67, ASTM F136, ISO-5832-2(3) etc |
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Shape |
Titanium Coil Wire/Titanium Spool Wire/Titanium Straight Wire |
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Wire Gauge |
Dia(0.06--6) *L |
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Process |
Bar billets-hot rolling-drawing-annealing-strength-pickling |
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Surface |
Polishing, picking, acid washed, black oxide |
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Main Technique |
Hot Forged; Hot Rolled; Cold drawn; Straighten etc |
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Material Milling Certificate |
According to. EN 10204.3.1 |
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Application |
Welding, Industry, Medical, Aerospace, Electronic etc |
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Material Available |
Aluminum, Stainless Steel, Carbon Steel, Brass, Bronze, Copper, Titanium and etc |
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Surface Treatment Available |
Anodized, Nickel Plated, Zinc Plated, Chrome Plated, Passivation, Electrophoresis, Electropolishing, Painting, Powder Coated, etc |
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Certificate &Standard |
ISO9001 certified factory with good quality control and all of our products are 100% inspected before delivery. |
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Equipments |
Over 28 CNC Milling Machines (3,4, 5 Axis) & 22 CNC Turning machines can support your large order demand. |
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Design |
OEM & ODM are welcome, and also we have a R&D team and can help your design and develop your products |
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Application |
Different kinds of cars, machinery, home appliance, electronic products, electric appliance, stationery, computers, power |
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MOQ |
No quantity limitation |
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Samples |
Welcome you to request samples to test and check the quality. |
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Delivery & Shipping |
We can deliver to over 50 countries all over the world, shipping by DHL, FedEx, UPS, etc around 3 to 5 days |
GNEE is a specialized manufacturer and exporter of high-quality titanium products, including pipes, sheets, bars, wires, and fabricated parts.
We utilize advanced CNC machining, rolling, and welding equipment to ensure precision manufacturing. All products undergo strict chemical, mechanical, and non-destructive testing to guarantee compliance with international standards.
Our export-safe packaging includes wooden crates and waterproof wrapping to ensure secure delivery. If you have any needs, please feel free to contact us immediately：info@gneemetal.com
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