Products Description
The welding wire for 2205 duplex stainless steel is designed with advanced alloy technology and precision manufacturing processes, ensuring that the weld metal achieves excellent performance matching the base material. Our welding wire for 2205 duplex stainless steel can form a stable microstructure consisting of austenite and ferrite phases, featuring high strength and excellent corrosion resistance. Whether it is for offshore platforms, chemical equipment, or oil and gas pipelines, this welding wire for 2205 duplex stainless steel can provide reliable welding quality and long-term service performance.
Chemical Elements And Mechanical Properties
| Chemical Composition (%) | |
|---|---|
| C | ≤0.030 |
| Cr | 22.0-23.5 |
| Ni | 8.0-9.5 |
| Mo | 3.0-3.5 |
| N | 0.12-0.18 |
| Mn | ≤1.5 |
| Cu | ≤0.5 |
| Mechanical Properties | |
|---|---|
| Tensile Strength | 750-880 MPa |
| Yield Strength | ≥550 MPa |
| Elongation | ≥25% |
| Impact Toughness (20℃) | ≥80 J |
Product Application
- Ocean engineering: Offshore drilling platforms, shipbuilding, seawater desalination equipment
- Petroleum and chemical industry: Oil and gas transportation pipelines, reaction vessels, heat exchangers
- Pulp and paper production: Cooking equipment, bleaching towers, pulp processing system
- Environmental protection engineering: Flue gas desulfurization system, wastewater treatment equipment
- Energy and Power: Nuclear power equipment, geothermal power generation systems
Surface Types & Characteristics
| Surface Type | Characteristics | Applications |
|---|---|---|
| Bright Annealed | Clean, oxide-free surface, minimal spatter, high weld purity | TIG welding, root pass welding of pipelines, critical joints |
| Copper Coated | Enhanced conductivity and rust prevention, smooth feeding | Automated MIG/MAG welding, large-scale fabrication, shipbuilding |
| Special Coated | Optimized for specific processes, reduced fume emission | Vertical-up welding, overhead welding, confined space operations |
Why Choose Us
Why choose our products
Our production base is equipped with modern clean workshops, with a dedicated unit for the manufacture of special materials. The workshop is equipped with an inert gas protection refining system and a fully automatic temperature-controlled drawing line, ensuring the precise composition of the welding wire alloy and the uniform and stable microstructure. The entire production process is monitored digitally, and key processes are equipped with online proportion analysis instruments and non-destructive testing equipment, achieving intelligent quality control from melting to winding.
The company, relying on its independently established provincial-level materials engineering research center, has established a complete technical system in the fields of special welding materials such as duplex stainless steel and nickel-based alloys. We possess the first fully enclosed nitrogen protection continuous production line in China, which enables the entire process from alloy melting to product packaging to be controllable. The digitalization coverage rate of key processes exceeds 95%.
The company's R&D team has established joint laboratories with several universities, and has cumulatively obtained 16 national invention patents. They have also participated in the formulation of 3 industry standards. We have established a three-level detection system covering raw materials, semi-finished products, and finished products, and are equipped with high-end detection equipment such as electronic probes and thermal simulation testing machines to ensure the completeness and traceability of product performance data.
Packaging
The product is packed in a fumigated wooden box, strictly in accordance with international standards. The box is made of a fully enclosed mortise-and-tenon structure, with a moisture-proof aluminum foil layer inside. The important components are additionally fixed with pearl cotton independently. Each box is securely reinforced with four-point binding using rust-proof steel wire. The box surface is printed with waterproof marks and mechanical handling diagrams to ensure safety during long-distance shipping and multi-point transfer.
We offer comprehensive logistics transportation solutions. For domestic transportation, we collaborate with professional logistics companies and use shock-proof box trucks for transportation, ensuring that the products are protected from damage caused by bumps. For international transportation, we provide services including ocean container shipping and air express delivery. All export packaging complies with international transportation standards, and complete customs declaration documents are provided. For urgent orders, we have a fast-track system that can prioritize transportation. All goods are insured for full coverage during transportation, and real-time logistics tracking services are provided to ensure the safe and timely delivery of the products.
Customer feedback
We highly value the professional feedback from each customer and will continue to optimize our product system, providing stronger material support for the global industrial development.
FAQ
Q1: Why did you choose your 2205 duplex stainless steel welding wire instead of the ordinary austenitic welding wire?
A: Our welding wire is specially designed to match the characteristics of 2205 duplex steel. The weld seam can achieve a balance of ferrite and austenite phases (approximately 50:50), featuring high strength (yield strength ≥ 550 MPa) and excellent resistance to chloride ion corrosion. It is particularly suitable for harsh environments such as marine and chemical industries, and its performance far exceeds that of austenitic welding materials like 304/316.
Q2: How do you ensure that the corrosion resistance of the weld after welding meets the standards?
A: We achieve this by precisely controlling the chemical composition of the welding wire (such as nitrogen content at 0.12-0.18%) and providing corresponding welding process parameters. We ensure the stability of the weld structure. Each batch of products comes with a comparison test report and can provide welding process assessment (WPS) guidance to guarantee that the post-weld pitting resistance index (PREN ≥ 34) complies with the ASTM A923 standard.
Q3: Is customization for special environments (such as ultra-low temperature or high-temperature operation) supported?
A: Yes. We can adjust the alloy ratio according to project requirements and provide specially formulated welding wires that are suitable for extremely low temperatures (-50℃ with impact toughness ≥ 80J) or high temperatures (≤ 300℃ for long-term use). We also provide third-party performance verification reports and have successfully applied them in projects such as LNG modules and geothermal equipment.
