Superior Quality RBCuZn-D MIG Welding Wire for Optimal Results¹

Product Description RBCuZn-D Brass Welding/Brazing Filler Metal: Technical Summary1. Classification & OverviewAWS A5.8 Designation: RBCuZn-D (formerly known as "Naval Brass") - A time-tested material favored for its exceptional performance in demanding environments.Material Type: Copper-Zinc alloy (Cu-Zn-Sn system) with added tin for enhanced corrosion resistance - a robust choice for superior durability.Key Use: Joining copper alloys, steel, and cast iron where seawater/chemical corrosion resistance is critical - ensuring longevity in harsh conditions.2. Chemical CompositionTable 1: Composition (Weight %)CuZnSnFePbSiImpurities58.0-61.0%Rem.0.5-1.5%0.25-1.0%≤0.10%0.04-0.25%≤0.50% totalKey Elements:Sn (Tin): Improves seawater dezincification resistance - a key factor for longevity in marine applications.Fe (Iron): Enhances strength and wear resistance - vital for the durability of welded joints.Low Pb/Si: Minimizes hot cracking during welding - ensuring seamless and robust connections.3. Mechanical PropertiesAs-Deposited:Tensile Strength: 410-510 MPa - offering substantial resistance to tensile forces.Hardness: 85-105 HB - ensuring a solid and resilient surface.Melting Range: 885-900°C (solidus-liquidus) - providing a wide thermal processing window.Corrosion Resistance: Excellent in seawater, marine atmospheres, and mild acids/alkalis - ideal for environments where other materials fail.4. ApplicationsMarine Engineering: Ship propellers, seawater piping, condenser tubes - pivotal components of marine structures.Industrial: Heat exchangers, pump components, valve bodies - essential for industrial fluid handling and processing.Repair: Joining/building up manganese bronzes and high-tensile brasses.5. Welding & Brazing GuidelinesProcess Compatibility:Oxy-Acetylene Welding (OAW): Preferred for cast iron repairs - ensuring high-quality bonds in challenging materials.Gas Tungsten Arc Welding (GTAW/TIG): For precision joints (use DCEN polarity) - ideal for creating intricate and precise welds.Parameters:Flux Requirement: AWS Type FB3-A or borax-based flux (mandatory to prevent oxidation) - critical for pristine weld quality.Preheat: 150-260°C (for thick sections/cast iron) - optimizing material readiness and consistency.Interpass Temp.: ≤200°C to avoid Zn fuming - essential for maintaining a safe and efficient welding atmosphere.6. Handling & SafetyZinc Fume Hazard: Employ effective control measures such as local exhaust ventilation (LEV) and ensure the use of OSHA-approved respirators to maintain a safe working environment.Storage: Store in sealed containers with less than 40% humidity to effectively prevent oxidation and maintain the product's superior quality.Form Availability: Available in convenient forms such as rods with diameters ranging from 3-6 mm and in coil form for versatile application needs.7. Comparison to Similar FillersFillerCompositionKey Use CaseRBCuZn-DCu-Zn-Sn-FeMarine corrosion resistanceRBCuZn-CCu-Zn-Si (no Sn/Fe)General-purpose brazingERCuSn-ACu-Sn (phosphor bronze)Bronze welding, bearingsCritical Note:RBCuZn-D is not interchangeable with silicon bronzes like ERCuSi-A or nickel alloys. It should be used exclusively for Cu-Zn base metals or in dissimilar joints that demand seawater resistance, ensuring optimal performance.For complete specifications, please refer to AWS A5.8:2021 (Specification for Brazing Filler Metals) for authoritative guidance..

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