Grade 4 Titanium Bar ASTM B348 For Hydraulic and Instrumentation Tubing

Place of Origin CHINA
Certification ISO9000:2015
Model Number GR4
Minimum Order Quantity 100KGs
Price According to quantity
Packaging Details Clients’ requirement
Delivery Time 10 working days
Payment Terms T/T, Western Union, MoneyGram
Supply Ability 300 tons per month

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

Wechat: 0086 18588475571


If you have any concern, we provide 24-hour online help.

Product Details
Delivert Time 7-10days Surface Process Polished, Pickled, Sandblasted
Material Element Titanium Weight 4.51 G/cm3
Diameter Customizable Advantage High Temperature Resistance
Heat Treatment Annealing, Solution Treatment Color Silvery,nature,Metallic
Chemical Composition Typically >99% Titanium Melting Point 1668°C
High Light

Grade 4 Titanium Bar


ASTM B348 Titanium Bar


Instrumentation Tubing Titanium Bar

Leave a Message
Product Description

Grade 4 Titanium Bar ASTM B348 For Hydraulic and Instrumentation Tubing


The Grade 4 Titanium Bar is characterized by its dimensions and adherence to a specific standard. The diameter of the bar ranges from 6.35 millimeters to 200 millimeters, offering a variety of sizes to accommodate different applications. The maximum length of the bar can extend up to 6000 millimeters. This titanium bar conforms to the ASTM B348 standard, which ensures consistent quality and properties for industrial uses. The surface of the bar is polished, providing a smooth finish that is often required for precision engineering and aesthetic purposes.


What Is Grade 4 Titanium Bar


Grade 4 Titanium Bar stands as the strongest among pure grades of titanium, owing its superior strength to high oxygen content and extra high strength. It successfully marries excellent corrosion resistance with good formability and weldability, making it a versatile material for various applications. Primarily, Grade 4 titanium bar is utilized in the creation of hydraulic and instrumentation tubing. Its corrosion-resistant properties make it an ideal choice for a broad range of chemical processing equipment, along with marine and airframe applications. The Grade 4 titanium bar can be used for components that require strength up to temperatures of 400°F (204°C), and it offers oxidation resistance up to 600°F (315°C).


Density: 0.163 lbs/in³ (4.51 g/cm³)

Mean Coefficient of Thermal Expansion, in/in/°F (mm/m/°C):

70- 212°F (20- 100°C) 4.78 x 10-6 (8.6)

Thermal Conductivity: BTU-in/h-ft-°F (W/m-°K):

At 70°F (21°C): 119 (17.2)

Modulus of Elasticity, ksi (MPa)

15.2 x 10³ (105 x 10³) in tension

Melting Point : 3020°F (1660°C)


ET4/ET4E R50700 3.7065


Grade 4 Titanium Chemical Composition

Grade Fe (Max) O (Max) N (Max) C (Max) H (Max) Ti(Max)
ET4 (ASTMB348 Gr.4) 0.50 0.40 0.05 0.08 0.015 balance
ET4E(ASTMF67 Gr.4) 0.50 0.40 0.05 0.08 0.015 balance
ET4E(ISO5832-2 Gr.4) 0.3 0.45 0.05 0.10 0.0125 balance

After the peeling procedure, H content must confirm to the above composition.

Mechanical Properties:



Tensile test (room temp., longitude)
Rm(KSI) 0.2%Rp(KSI) A, 4D(%) Z(%)
ET4 (ASTMB348 Gr.4) Min. 80 Min. 70 Min. 15 Min. 25
ET4E(ASTMF67 Gr.4) Min. 80 Min. 70 Min. 15 Min. 25

ET4E (annealed)

(ISO 5832-2 Gr.4)

Min. 80 Min. 64 Min. 15 Min. 25
ET4E (cold worked) (ISO 5832-2 Gr.4) Min. 99 Min. 75 Min. 10 Min. 18

* These ASTM B348 Gr.4 properties apply to longitudinal sections with a maximum of 64.5cm2.

* These ASTM F67 Gr.4 properties apply to longitudinal sections with a maximum of 1935mm2.


Spec. Size Range (mm) Grain Size Surface
ET4E (ASTM E112) 3~300 Grain Size≥5 No α layer

In recent years, the use of Grade 4 Titanium Bar has become increasingly prevalent, particularly for medical applications. It is important to note that while the material standard for medical use is designated as ASTM F67, the industrial standard for Grade 4 titanium bar is identified by ASTM B348. Additionally, Grade 4 titanium material is known by other designations such as UNS R50700 and DIN 3.7065.


The dimensions of the Grade 4 titanium bar, including its diameter and length, can be customized to meet specific requirements, with the possibility of a tolerance level as precise as H8. This adaptability in size allows for the material to be tailored for a variety of uses.


Recognized as the strongest among commercially pure forms of titanium, Grade 4 titanium bar exhibits excellent corrosion resistance across a broad spectrum of environments. Its superior strength makes it an ideal choice for applications demanding high durability. As such, it is widely used in industrial settings, medical devices, and aerospace engineering where the combination of high strength and corrosion resistance is crucial.