Strong RBCuZn-D Filler Welding Wire for Reliable Performance

• Customization: Available
• Type: Rolling Wire
• Material: CO2
• Model NO.: RBCuZn-D
• Flux Containing: Not Containing Flux
• Slag Characteristic: Acidic
• Extended Length: >20mm
• Transport Package: 1kg/5kg/12.5/15kg/Spool
• Specification: 0.6/0.8/1.0/1.2/1.6/2.0/3.2/4.0mm
• Trademark: Jiuzhou
• Origin: China
• HS Code: 7223000
• Production Capacity: 200000kg/Year

Product Description

RBCuZn-D Brass Welding/Brazing Filler Metal: Premium Technical Summary

1. In-depth Classification & Overview

• Recognized AWS A5.8 Designation: RBCuZn-D (traditionally famed as 'Naval Brass')

• Distinctive Material Type: Uniquely formulated Copper-Zinc alloy (Cu-Zn-Sn system) with a touch of tin to significantly enhance corrosion resistance.

• Essential Key Use: Expert Joining of copper alloys, steel, and cast iron where the resistance to seawater and chemical corrosion is paramount.

2. Precise Chemical Composition

Table 1: Detailed Composition (Weight %)

Cu	Zn	Sn	Fe	Pb	Si	Impurities
58.0-61.0%	Rem.	0.5-1.5%	0.25-1.0%	≤0.10%	0.04-0.25%	≤0.50% total

Crucial Key Elements:

• Sn (Tin): Boosts resistance to seawater dezincification.

• Fe (Iron): Fortifies strength and augments wear resistance.

• Reduced Pb/Si: Effectively minimizes hot cracking during intricate welding processes.

3. Robust Mechanical Properties

• As-Deposited Features:

  • Tensile Strength: 410-510 MPa for reliable performance under stress.

  • Hardness: 85-105 HB ensuring durability.

  • Melting Range: 885-900°C (solidus-liquidus), ideal for various applications.

• Exceptional Corrosion Resistance: Outstanding in seawater, marine atmospheres, and against mild acids/alkalis.

4. Versatile Applications

• Marine Engineering: Ideal for ship propellers, seawater piping, and condenser tubes.

• Industrial Applications: Perfect for heat exchangers, pump components, and valve bodies.

• Repair & Maintenance: Joining/building up manganese bronzes and high-tensile brasses.

5. Welding & Brazing Expert Guidelines

• Process Compatibility:

  • Oxy-Acetylene Welding (OAW): Highly preferred for precise cast iron repairs.

  • Gas Tungsten Arc Welding (GTAW/TIG): Optimal for precision joints (employ DCEN polarity).

• Critical Parameters:

  • Flux Requirement: AWS Type FB3-A or borax-based flux is essential to prevent oxidation and ensure quality.

  • Preheat: 150-260°C is advised for thick sections/cast iron to enhance results.

  • Interpass Temperature: Maintain ≤200°C to effectively avoid Zn fuming.

6. Handling & Safety: Prioritize your safety with the utmost importance.

• Zinc Fume Hazard: Be aware, stay safe from hazardous emissions.: Ensure adequate protection with local exhaust ventilation (LEV) and make sure to use OSHA-approved respirators for optimal safety.

• Storage: Preserve the integrity of your materials.: Store in sealed containers with less than 40% humidity to effectively prevent oxidation and maintain quality.

• Form Availability: Find the perfect fit for your needs.: Available in rods with diameters ranging from 3-6 mm, and in coils for flexible application.

7. Comparison to Similar Fillers: Discover how RBCuZn-D stands out.

Filler	Composition	Key Use Case
RBCuZn-D	Cu-Zn-Sn-Fe	Marine corrosion resistance
RBCuZn-C	Cu-Zn-Si (no Sn/Fe)	General-purpose brazing
ERCuSn-A	Cu-Sn (phosphor bronze)	Bronze welding, bearings

Critical Note: Essential information for correct application.:
RBCuZn-D is not interchangeable with silicon bronzes like ERCuSi-A or nickel alloys. It is designed specifically for use with Cu-Zn base metals or in applications requiring seawater resistance for dissimilar joints.

For full specifications, refer to: Dive into comprehensive details. AWS A5.8:2021 (Specification for Brazing Filler Metals).