ASTM B862 Grade 1 Titanium Welded Pipe

ASTM B862 Grade 1 Titanium Welded Pipe using high-purity Grade 1 titanium strip through automatic argon-shielded welding technology. It offers corrosion resistance and mechanical properties comparable to seamless pipes, serving as a cost-effective solution for large-scale pipeline systems in chemical, marine, and power industries. The product undergoes strict non-destructive weld testing and pressure testing to ensure long-term safety in harsh working conditions such as seawater, chloride media, and oxidizing acids. Customization of diameter, wall thickness, length, and weld-end preparation is available to meet installation and corrosion resistance requirements of various engineering projects.

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Chemical Composition (Weight % - Typical)

Element	Content (Max. %)
Titanium (Ti)	Balance (≥ 99.5%)
Nitrogen (N)	0.03
Carbon (C)	0.08
Hydrogen (H)	0.015
Iron (Fe)	0.20
Oxygen (O)	0.18
Other Elements, each	0.10
Other Elements, total	0.40

 

Mechanical Properties (Annealed Condition - Typical)

Property	Value	Unit	Test Standard
Tensile Strength, min.	240	MPa (35 ksi)	ASTM E8
Yield Strength (0.2% Offset), min.	170	MPa (25 ksi)	ASTM E8
Elongation in 2" / 50mm, min.	24	%	ASTM E8
Reduction of Area	30	%	ASTM E8
Hardness (Rockwell B)	70 - 85	HRB	ASTM E18
Modulus of Elasticity	105	GPa (15.2 x 10⁶ psi)	-
Density	4.51	g/cm³ (0.163 lb/in³)	-

Sector	Typical Use Cases	Recommended Specifications
Chemical Processing	Acid transfer lines, reactor vent pipes, chloride handling systems	SCH 40S, Beveled ends, Pickled surface
Marine & Offshore	Seawater cooling pipes, ballast water lines, deck drainage	SCH 20S, Polished ID, Cathodic protection ready
Power Generation	FGD system ducts, condenser tubing, cooling water pipes	SCH 10S-40S, Full RT testing, Class 600+ rating
Pharmaceutical	WFI distribution lines, CIP/SIP systems, bioreactor piping	Electropolished ID (Ra ≤0.4 µm), 3.1 material certificate
Mining & Metallurgy	Acid leaching circuits, electrolyte transfer lines, tailings piping	Heavy wall (≥8 mm), Abrasion-resistant coatings available

 

Capability	Key Processes & Expertise
Precision Machining	CNC milling, turning, drilling & tapping. Utilizing sharp tooling, optimized feeds/speeds, and dedicated coolants to overcome GR1's "gummy" nature and achieve tight tolerances.
Forming & Fabrication	Cold rolling, deep drawing, press brake bending, hydroforming. Leveraging GR1's exceptional ductility for complex shapes with controlled springback.
Welding & Joining	High-purity argon GTAW (TIG) welding, laser welding. Full-trailing gas protection for oxide-free, corrosion-resistant welds. Post-weld stress relieving available.
Cutting & Blanking	High-definition plasma cutting, waterjet cutting, laser cutting. Delivering clean edges with minimal heat-affected zone for superior downstream processing.
Surface Finishing	Mechanical polishing (to mirror or satin), abrasive blasting, pickling (to ASTM/medical standards), passivation. Preparing surfaces for final use or coating.

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What is GR1 Titanium?
GR1 (Grade 1) is commercially pure, unalloyed titanium with a minimum titanium content of 99.5%. It is the most ductile and corrosion-resistant grade among pure titanium alloys, making it ideal for applications where forming and corrosion resistance are critical.

 

Can GR1 titanium be welded?
Yes, GR1 has excellent weldability. Gas Tungsten Arc Welding (GTAW/TIG) with high-purity argon shielding is the standard method. Proper cleaning and shielding are essential to prevent oxidation and maintain corrosion resistance.

 

Does GR1 titanium work harden?
Yes, like most pure metals, GR1 can work-harden during cold forming or machining. Intermediate annealing may be required for severe deformation operations to restore ductility and prevent cracking.

 

Can GR1 be heat-treated for higher strength?
No, GR1 is a non-heat-treatable alloy. Its strength is derived from cold working. Annealing is the only thermal process used to relieve stresses and soften the material after cold working.

 

Is GR1 titanium suitable for medical implants?
Yes, GR1 is widely used for permanent and temporary medical implants (e.g., bone plates, screws, cranial meshes) due to its excellent biocompatibility, corrosion resistance in bodily fluids, and non-toxic nature.

 

How does GR1 compare to GR2 titanium?
GR1 has lower strength but higher ductility and corrosion resistance than GR2. GR2 is more widely used for general-purpose applications, while GR1 is chosen for the most demanding corrosive environments or where severe forming is required.

 

Product Form	Available Shapes / Types	Common Grades	Typical Dimensions (Range)	Standard Specifications
Titanium Tube & Pipe	- Seamless Pipe - Welded Pipe - Heat Exchanger Tubes (U-Tube, Straight) - Hydraulic & Instrumentation Tubing	GR1, GR2, GR7, GR9, GR12, GR5 (Ti-6Al-4V)	- OD: 1/8" to 12" (3mm - 325mm) - Wall Thickness: 0.028" to 1.0" (0.7mm - 25mm) - Length: Up to 20ft (6m) standard, custom lengths available	ASTM B337, B338, B861, B862 ASME SB337, SB338
Titanium Sheet & Plate	- Cold Rolled Sheet - Hot Rolled Plate - Checker Plate / Tread Plate	GR1, GR2, GR5, GR7, GR9, GR12	- Sheet Thickness: 0.016" to 0.187" (0.4mm - 4.7mm) - Plate Thickness: 0.187" to 4" (4.7mm - 100mm)+ - Width: Up to 60" (1500mm) - Length: Up to 240" (6000mm)	ASTM B265 ASME SB265
Titanium Bar & Rod	- Round Bar - Hex Bar - Square Bar - Forged Bar - Centerless Ground Bar	GR1, GR2, GR5, GR7, GR9, GR12	- Round Bar Diameter: 0.125" to 12" (3mm - 300mm) - Hex/Square: 0.125" to 4" (3mm - 100mm) - Length: Random, cut-to-length, or coils (small diameters)	ASTM B348 ASME SB348
Titanium Wire	- Coiled Welding Wire - Straight Length Wire - Spring Wire - Fastener Wire	GR1, GR2, GR5 (ELI for medical), GR7	- Diameter: 0.010" to 0.25" (0.25mm - 6.35mm) standard - Spool Weight: Standard 5lb, 10lb, 25lb spools; custom packaging available	ASTM B863, F67 (for medical)
Titanium Strip & Foil	- Cold Rolled Strip (Coil) - Precision Foil - Shim Stock	GR1, GR2, GR5	- Thickness (Strip): 0.004" to 0.125" (0.1mm - 3.1mm) - Thickness (Foil): 0.0005" to 0.004" (0.012mm - 0.1mm) - Width: Up to 24" (600mm)	ASTM B265 (strip/foil)

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Our factory is equipped with advanced production machinery, including CNC machining centers (3 to 5-axis), high-precision tube mills, cold rolling mills, automated wire drawing lines, and CNC-controlled cutting systems (laser, waterjet, and plasma). We maintain a Class 100,000 clean workshop for medical and aerospace production, supported by argon-protected welding bays, vacuum annealing furnaces, and full-spectrum quality testing labs with CMM, spectrometer, and ultrasonic testing equipment. From raw material to finished product, every step is executed under controlled conditions to ensure dimensional accuracy, metallurgical integrity, and compliance with international standards.

 

Our standard packaging protocol includes multiple protective layers tailored to the specific product form and customer requirements. All materials are first cleaned, dried, and wrapped with VCI (Vapor Corrosion Inhibitor) paper or PE film to prevent oxidation and surface contamination. Products are then securely bundled and cushioned with waterproof corrugated paper and edge protectors. Finished bundles are placed in plywood crates, heavy-duty cardboard boxes, or sealed in moisture-proof PVC film on pallets, with clear, durable labeling for handling and identification. For international sea freight, we offer IPPC-certified fumigation wooden cases or seaworthy export crates, ensuring your order arrives safely and in ready-to-use condition, no matter the destination.

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