Titanium Gr 5 Gr 7 Gr 9 Straight Pipe

Titanium round tube manufacturer

 

 

Grade	N	C	H	Fe	O	Al	V	Ni	Ti
Gr1	0.03	0.08	0.015	0.2	0.18	/	/	/	bal
Gr2	0.03	0.08	0.015	0.3	0.25	/	/	/	bal
Gr3	0.05	0.08	0.015	0.3	0.35	/	/	/	bal
Gr4	0.05	0.08	0.015	0.5	0.4	/	/	/
Gr5	0.05	0.08	0.015	0.4	0.2	5.5~6.75	3.5~4.5	/	bal
Gr7	0.03	0.08	0.015	0.3	0.25	/	/	/	bal
Gr9	0.03	0.08	0.015	0.25	0.15	2.5~3.5	2.0~3.0	/	bal
Gr12	0.03	0.08	0.015	0.3	0.25	/	/	0.6~0.9	bal

 

(1). According to the customer's application field, different designs can be made into disc shape, round shape, tube, coil orprofile.
(2). The whole titanium tube is processed, which reduces the direct joint of the tube and is more durable.
(3). According to the environment used, use pipes of different specifications and thickness to meet customer requirements to the greatest extent.
(4). Strong corrosion resistance.

 

Mechanical Properties Comparison

Property	Grade 5	Grade 7	Grade 9
Tensile Strength (MPa)	895	345	620
Yield Strength (MPa)	825	275	480
Elongation (%)	10	20	15
Strength-to-Weight Ratio	★★★★★	★★	★★★★
Formability	★★	★★★★★	★★★★
Weldability	★★★	★★★★★	★★★★★

 

Corrosion Resistance Comparison

Environment	Grade 5	Grade 7	Grade 9
Seawater	Excellent	Excellent	Excellent
Oxidizing Acids	Good	Excellent	Good
Reducing Acids	Fair	Excellent	Fair
Chlorides	Excellent	Excellent	Excellent
High Temperature	Excellent	Good	Good

 

Cost Comparison

Factor	Grade 5	Grade 7	Grade 9
Raw Material Cost	Moderate	High	Moderate
Fabrication Cost	Higher	Lower	Moderate
Lifecycle Cost	Low	Very Low	Low
Availability	Excellent	Good	Good

 

When to Choose Grade 5

High mechanical strength required – Pressure vessels, structural components

Elevated temperature service – Up to 400°C (750°F)

Aerospace applications – Weight-critical designs

Wear-resistant applications – Where surface hardness matters

 

When to Choose Grade 7

Extremely corrosive environments – Reducing acids, chlorides

Crevice corrosion concerns – Gasketed joints, flanges

Long-term reliability critical – No-failure applications

Chemical processing – Acid handling, aggressive media

 

When to Choose Grade 9

Balance of strength and formability – Complex piping configurations

Cold bending required – Tight radii without annealing

Weight reduction vs Grade 2 – Thinner walls possible

Hydraulic systems – Aerospace and marine

 

Our production capacity:
We have a state-of-the-art manufacturing facility equipped with cutting-edge technology and experienced professionals. This allows us to provide strong production capabilities to meet your piping supply needs.
Below is an overview of our production capabilities:
Annual Production: We have the capacity to produce 8,000 tons of titanium per year.
Pipe Sizes: Our production lines are capable of producing pipe in a variety of wall thicknesses.

Professional team offers gr5 titanium tubing

 

Q1: Can Grade 5 titanium pipes be welded to Grade 7 or Grade 9?

Yes, with appropriate filler metal selection:

Gr5 to Gr5: ERTi-5 filler

Gr5 to Gr7: ERTi-5 or ERTi-7 (consult application)

Gr5 to Gr9: ERTi-9 typically suitable

Q2: What is the maximum pressure rating for titanium pipes?

Pressure ratings depend on grade, size, wall thickness, and temperature. Consult ASME B31.3 for process piping or specific design codes. As a guideline, Schedule 10S Grade 5 pipe can typically handle 2000-4000 psi depending on diameter.

Q3: Are these grades suitable for sour service (H₂S environments)?

Generally yes, but with limitations:

Grade 5: Limited resistance, may require special considerations

Grade 7: Excellent resistance to sulfide stress cracking

Grade 9: Good resistance, often specified for sour service

Q4: What surface finishes are available for high-purity applications?

For pharmaceutical, semiconductor, and similar applications:

Electropolished internal surfaces (Ra ≤ 0.4μm)

Cleaned and passivated

Double-bagged in cleanroom conditions

 

Customer visits

Large Scale Factory

GNEE Participation in Exhibitions

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