GR7 titanium wire

GR7 Titanium Wire – Palladium-Enhanced Corrosion-Resistant Alloy Wire

LINHUI TITANIUM manufactures GR7 titanium wire with palladium stabilization, delivering exceptional corrosion resistance in aggressive reducing acids including HCl and H₂SO₄ environments. Our production facility maintains strict dimensional tolerances of ±0.05mm through controlled cold drawing processes. With over 200 tons of in-stock inventory and 20+ years of titanium alloy processing expertise, we ensure rapid delivery within 3–7 days for standard specifications. Each spool undergoes 100% NDT inspection and comes with EN 10204 3.1 certification for full material traceability. Our titanium welding wire meets ASTM B863 standards, serving chemical processing, marine engineering, and industrial welding applications across 60+ countries.

Key Features & Benefits

Superior Corrosion Performance

GR7 contains 0.12–0.25% palladium, significantly enhancing resistance to reducing acids where standard grades fail. You get extended service life in hot chloride and sulfuric acid environments.

Precision Manufacturing

Our controlled cold drawing maintains diameter consistency within ±0.03mm. This ensures stable feeding performance in automatic welding equipment and coil winding applications.

Immediate Availability

Stock inventory eliminates lengthy lead times. You receive material with complete documentation including mill test certificates, chemical analysis reports, and mechanical property data.

Specifications

Manufacturing Process

Raw Material Selection

We source Grade 7 titanium billets from certified mills with complete heat number traceability. Each batch undergoes incoming inspection for chemical composition verification.

Hot Rolling & Pickling

Billets are hot-rolled into rod form, then pickled in HNO₃/HF solution to remove alpha-case oxide layers. This prepares clean surfaces for subsequent cold working.

Cold Drawing

Multi-pass cold drawing through carbide dies reduces diameter incrementally. Inter-pass annealing at 650–750°C relieves work hardening while maintaining mechanical properties.

Final Conditioning

GR7 titanium wire receives final stress-relief annealing, precision straightening, and surface finishing. Spooling tension is carefully controlled to prevent deformation during storage and unwinding.

Quality Inspection

Dimensional Confirmation

Diameter is measured at intervals of one meter using laser micrometers. 100% adherence to predetermined tolerances is guaranteed via statistical process control.

Surface Analysis

Surface flaws deeper than 0.1 mm are found via visual and automated optical inspection. Subsurface discontinuities are found using eddy current testing.

Mechanical Examination

According to ASTM E8, tests are conducted for elongation, yield strength, and tensile strength. UTS 340 MPa, YS 280 MPa, and elongation ≥20% are typical values.

Package of Documentation

Mill test certificates (MTC), material safety data sheets (MSDS), certificates of conformity (CoC), and, if necessary, third-party inspection reports are all included in every shipment.

Applications Of GR7 titanium wire

Chemical Processing

You can rely on this material for reactor heating coils, heat exchanger tie rods, and pickling basket frames in chlor-alkali and sulfuric acid plants.

Welding Consumables

GR7 filler wire provides corrosion-resistant welds for Grade 7 plate and pipe fabrication in GTAW and plasma arc welding processes.

Marine Engineering

Spring wire and fastener wire applications benefit from seawater corrosion resistance combined with high strength-to-weight ratio.

Electrochemical Systems

Electrode lead wires and anode connectors in electroplating and cathodic protection systems utilize the material's conductivity and durability.

Export Markets

Our products reach North America (USA, Canada), Europe (Germany, France, UK), Middle East (UAE, Saudi Arabia), and Asia-Pacific (Japan, South Korea, Singapore). We maintain partnerships with PETRONAS, LUKOIL, and major EPC contractors serving oil, gas, and chemical industries.

Why Choose Us

Factory-Direct Pricing

As a manufacturer since 2000, we eliminate distributor markups. You receive competitive pricing with transparent cost structures.

Rapid Response System

Quotations within 4 hours, drawing reviews within 24 hours. Our engineering team provides material selection guidance and technical support in English, Chinese, and Spanish.

Flexible Order Quantities

Trial orders start from 100 kg. Large-volume contracts receive priority production scheduling and customized packaging solutions.

Comprehensive Certification

ISO 9001:2015, PED 2014/68/EU, NORSOK M-650 compliance. REACH and RoHS documentation available upon request for European market requirements.

Packaging & Shipping

Wire coils are wrapped in moisture-resistant paper, secured with nylon straps, and placed in fumigated wooden cases. Straight lengths are bundled and crated with protective end caps. Each package displays heat number, specification, and handling instructions. We arrange sea freight, air cargo, or express courier based on your delivery urgency.

FAQ

Q: What's the minimum order quantity for custom diameters?

A: Custom sizes require 500 kg minimum. Stock diameters (1.0mm, 1.6mm, 2.0mm, 3.2mm) have 100 kg MOQ.

Q: Can you provide material for aerospace applications?

A: Yes, we supply AMS 4921 compliant material with additional certification documentation and tighter composition controls when specified.

Q: How does GR7 compare to GR2 in corrosion resistance?

A: GR7 significantly outperforms GR2 in reducing acid environments, offering 10-100x longer service life in hot HCl and H₂SO₄ solutions.

Q: Do you offer cut-to-length services?

A: Straight lengths can be cut to your specified dimensions with ±2mm tolerance. Additional charges apply for non-standard lengths.

Q: What's the typical lead time for 1000 kg?

A: Stock specifications ship within 5 days. Custom production requires 20–25 days from PO confirmation.

Request a Quote

Ready to source high-performance GR7 titanium wire for your project? Contact our technical sales team at linhui@lhtitanium.com with your specifications, quantity, and delivery requirements. We'll provide detailed quotations, material certifications, and engineering support to ensure optimal material selection.