IPDB › China Industry › Metallurgy, Mineral & Energy
China, Chinese Copper Nickel CuNi90/10 70/30 En 12451/ISO1634 ASTM B466 Corrosion Resistant Seamless Pipe1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Non ferrous Metal ProductsCopperCopper Nickel PipeCuNi90/10
EZ Steel Industrial Co., Ltd.
Preview:
Product Description Basic Info.CompositionCopper NickelBrand & Composition 90-10 (C70600) 70-30 (C71500)Density8.9 g/cm3 (90-10) / 8.8 g/cm3 (70-30)Melting point1170-1240 °CThermal conductivity90-10:≈ 40 W·m-1-1;70-30:≈ 29 W·m-1·K-1Electrical conductivity 5-10 % IACS(90-10);4-8 % IACS(70-30)Yield strength 90-10:275-345 MPa;70-30:300-400 MPaTensile strength90-10:100-150 MPa;70-30:150-200 MPaElongation30-50 %Hardness90-10:75-100 HB;70-30:100-130 HBCorrosion rateLong-term exposure to seawater≤0.025 mm/aMaximum operating temperatureConsecutive300 °C(90-10);Consecutive 400 °C(70-30)Acid resistance10 % HCl Boiling 24 h:≤0.1 mm/aImpact resistance temperature196 °C (Under liquid nitrogen conditions) No cracking occurredGrain size≥5 grades (as annealed state)Non-destructive testing100% ET + 100% UT + 1.5×PN water pressureClassification society certificationABS / BV / DNV / LR / CCS / NORSOK M-650Supply status Light pull (H55), annealing (O61), solution treatment + agingStandardASTM B466 / B111, EN 12451, JIS H3300, GB/T 8890Product LineTechnological ProcessCopper-Nickel Alloy Production Flow (90-10 & 70-30)Raw Materials │ ├─ Copper cathode / nickel briquette / recycled Cu-Ni scrap │Vacuum Induction Melting (VIM) 1280-1330 °C │ ├─ Chemical adjustment → Cu 90 % / Ni 10 % (or 70/30) │Continuous / Horizontal Centrifugal Casting │ ├─ Round billet ? 150-400 mm │Heating & Extrusion 850-930 °C │ ├─ Hollow shell (piercing) │Hot Pilger Rolling (multi-pass 60-80 % reduction) │ ├─ Intermediate tube │Solution Annealing 580-750 °C │Cold Drawing / Cold Pilger / Cold Rolling │ ├─ Final OD & WT to spec │Bright Annealing (in-line under H2/N2) │Non-destructive Testing ├─ Eddy Current (ET) 100 % ├─ Ultrasonic (UT) 100 % └─ Hydrostatic test 1.5 × PN │Straightening & Cutting → 6 m / 12 m / coil │Final Inspection & Marking │Packaging ├─ Bundles + plastic caps └─ Wooden box / steel frame for exportExported ProductsThird-Party TestingChemical Analysis: Performed to verify composition (ASTM E478). - Mechanical Tests: Tensile tests on specimens from finished tubes. - Hydrostatic Testing: Optional; if required, pressure and duration specified. - Non-Destructive Testing (NDT): Eddy current or ultrasonic testing upon agreement. - Visual Inspection: Surface defects must not exceed specified limits.CertificatesCustomers VisitFor years, steel products supplied by Ezsteel have been widely applied in engineering projects such as oil and gas extraction, pipeline transportation,urban pipeline network construction,building construction,coastal and port construction,food and medicine factory construction.Our partners are throughout southeast Asia,theMidle East,Europe,Africa,America,Oceania,and more than 100 countries and regions.We also provide many steel pipe products and services to the worlds top 500 petroleum and gas, EPC companies,such as:PetroChina, Schlumberger,ADNOC,NNPC,ENI, NICO,EGPC,OXY,CCED,OGDCL, PEMEX, etc.Packing &DeliveryProduct AdvantagesI. Corrosion Resistance (Seawater/Salt Spray/Microbial)Rapid formation of a dense Cu2O-NiO composite film in seawater, maintaining a long-term uniform corrosion rate <0.025 mm/year.90-10 alloy shows no pitting or macro-fouling after 18 months of full immersion testing, while copper/aluminum bronze exhibits severe fouling under the same conditions.Self-healing capability against sulfides, chlorides, and microbial metabolites: Even after short-term exposure to H2S, the reformed oxide film restores corrosion resistance to near-pristine levels in clean seawater.Trace copper ion release (≈0.05 ppm) effectively inhibits algae/barnacle adhesion, reducing biofouling and localized corrosion risks.II. High-Temperature Resistance (Continuous Service: 600-800°C, Short-Term Higher)90-10 alloy retains ≥70% strength at 600°C, with oxidation weight gain rates significantly lower than brass/bronze.70-30 alloy (higher Ni content) maintains sufficient creep strength at 800°C, making it suitable for marine engine exhaust coolers and hot-oil heat exchangers.The oxide film remains dense and adherent at 700°C, complying with AMS 4628 for high-temperature oxidation resistance. Short-term peak tolerance reaches 850°C without spalling.III. Strong Acid Resistance (HCl, H2SO4, H3PO4, etc.)In boiling 10% HCl, 70-30 alloy exhibits a corrosion rate <0.1 mm/year, outperforming 316L (0.3-0.5 mm/year).Molybdenum-modified Cu-Ni alloys (e.g., 70-30-2Fe-2Mn) resist 40% H2SO4 at 80°C, ideal for offshore acid scrubbers and seawater electrolysis chlorine systems.Phosphoric acid: 70-30 alloy shows <0.05 mm/year corrosion in 85% H3PO4 (60°C), replacing Hastelloy G in marine chemical injection lines.Stable in HF and fluoride-rich brines, suitable for Floating LNG pre-treatment acid wash stages.FAQQ: How many days can you deliver after confirmed the order?A: For stock: within 5-7 days; For customized product: around 30 days; For special sizes: subject to negotiation.Q: How does your company do quality control?A: ISO 9001:2015 certified; Product certificate as per EN10204 3.1 or 3.2 as per customer's request. Q: Can I have a factory-visit?A: Surely. All customers are welcome to visit us in China.Q: Can I have a trial order?A: Of course, it is an honor for us to have the opportunity to show our quality and service.
Purchasing Request
Note: Send your purchase request, and we will screen suppliers or manufacturers for you free of charge...