Nov 21, 2025 Leave a message

ASTM-B338.pdf

ASTM B338 Grade 9 Titanium Seamless Tubing For Bicycles

The term "half 6-4" is used to describe grade 9 titanium tube on occasion. This combination of titanium with 3% aluminum and 2.5% vanadium offers 20 to half more noteworthy mechanical strength than the financially unadulterated (CP) titanium grades, however is more formable and weldable than Ti-6Al-4V (Grade 5).

The properties make it an excellent choice for high-performance applications, where strength, weight, and corrosion resistance are important factors. It has a tensile strength of 896 MPa (130 ksi) and a yield strength of 828 MPa (120 ksi), which is higher than many other titanium alloys. It also has good ductility and toughness, which make it easy to form and machine. Grade 9 titanium tube is widely used for producing titanium bicycle frame, titanium wheel chair, and other products.

 

Chemical components

Material

N

C

H

Fe

O

Al

V

Pa

Mo

Ni

Ti

Grade 9

0.03

0.08

0.015

0.25

0.15

2.5-3.5

2.0-3.0

/

/

/

Balance

 

Mechanical Property

Material Tensile strength(min) Yeild strength(min) Elongation(%)
Grade 9

ksi

MPa

ksi

MPa

 
 

125

860

105

725

10

Titanium Piping
Titanium Straight Tubing
Titanium Alloy Pipe
Titanium Tubing

Features of the Grade 9 Titanium tubing for bicycles

1)High strength and high pressure resistance: GR9 titanium alloy tubes have a strength 20% to 50% higher than that of industrial pure titanium at room temperature and are suitable for high pressure resistance applications.‌

2)Excellent corrosion resistance: GR9 titanium alloy exhibits good corrosion resistance in many media and is particularly suitable for use in corrosive environments. ‌

3)Good cold formability and weldability: GR9 titanium alloy has good cold formability and weldability, which makes it more flexible and reliable in manufacturing. ‌

4)Lightweight: The low density of GR9 titanium alloy gives it a significant advantage in fields that require lightweight designs. ‌

 

Specifications of Grade 9 Titanium tubing for bicycles

Tube Type

Dimensions,mm

Grade

Standard

Seamless Tube

Dia3~114mm*Tk0.2~6.0mm*L

Gr1, Gr2, Gr7,Gr9, Gr11,Gr12

ASTM B337, ASTM B338

Extruded Tube

Dia25~210mm*Tk6.0~30.0mm*L

Q/BS5631

Square Tube

Dia25~210mm*Tk6.0~30.0mm*L

ASTM B337, ASTM B338

Welded Tube

Dia25~210mm*Tk6.0~30.0mm*L

ASTM B862

 

about us

We are a leading manufacturer and exporter specializing in Titanium and Titanium Alloy products. Our company is dedicated to providing a comprehensive range of high-quality titanium solutions for demanding global industries such as Aerospace, Chemical Processing, Medical, Marine Engineering, Power Generation, and Sports Equipment.

 

Our core export portfolio encompasses the full spectrum of wrought titanium products, including:

Titanium Tubes & Pipes: From precision Thin-Walled Titanium Tubes for heat exchangers to robust Thick-Walled Titanium Pipes for high-pressure applications.

Titanium Plates & Sheets: Supplied as Titanium Plates for heavy-duty construction and Titanium Sheets / Titanium Foils for precise manufacturing.

Titanium Bars & Rods: We supply Titanium Bars, Titanium Rods, and Titanium Wires in various diameters and finishes.

Titanium Fasteners: A complete range of Titanium Fasteners including bolts, nuts, and studs.

 

We expertly process all common grades to meet diverse operational requirements, including:

Commercially Pure Titanium: Gr1, Gr2

Titanium Alloys: Gr5 (Ti-6Al-4V), Gr7, Gr9 (Ti-3Al-2.5V), Gr12

Our production and quality assurance strictly adhere to international standards such as ASTM B265, ASTM B337, ASTM B338, ASTM B348, ASME SB-363, and AMS 4902, ensuring superior performance, excellent corrosion resistance, and high strength-to-weight ratio in every product.

Leveraging our advanced manufacturing expertise and stringent quality control, we are your trusted global partner for reliable, high-performance titanium materials.

Titanium Welded PipeTitanium Seamless Pipe

 

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