| Customization: | Available |
|---|---|
| Type: | Rolling Wire |
| Material: | CO2 |
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RBCuZn-D Brass Welding/Brazing Filler Metal: Technical Summary
AWS A5.8 Designation: RBCuZn-D (formerly known as 'Naval Brass')
Material Type: Copper-Zinc alloy (Cu-Zn-Sn system) with added tin for enhanced corrosion resistance.
Key Use: Joining copper alloys, steel, and cast iron where seawater/chemical corrosion resistance is critical.
Table 1: 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 |
Key Elements:
Sn (Tin): Improves seawater dezincification resistance.
Fe (Iron): Enhances strength and wear resistance.
Low Pb/Si: Minimizes hot cracking during welding.
As-Deposited:
Tensile Strength: 410-510 MPa
Hardness: 85-105 HB
Melting Range: 885-900°C (solidus-liquidus)
Corrosion Resistance: Excellent in seawater, marine atmospheres, and mild acids/alkalis.
Marine Engineering: Ship propellers, seawater piping, condenser tubes.
Industrial: Heat exchangers, pump components, valve bodies.
Repair: Joining/building up manganese bronzes and high-tensile brasses.
Process Compatibility:
Oxy-Acetylene Welding (OAW): Preferred for cast iron repairs.
Gas Tungsten Arc Welding (GTAW/TIG): For precision joints (use DCEN polarity).
Parameters:
Flux Requirement: AWS Type FB3-A or borax-based flux (mandatory to prevent oxidation).
Preheat: 150-260°C (for thick sections/cast iron).
Interpass Temp.: ≤200°C to avoid Zn fuming.
Zinc Fume Hazard: An essential consideration when working with our Advanced RBCuZn-D CO2 Welding Wire is the potential hazard posed by zinc fumes.: Ensure maximum safety by employing local exhaust ventilation (LEV) systems and utilizing OSHA-approved respirators. These protective measures are paramount for maintaining a safe working environment.
Storage: Optimal storage of the Advanced RBCuZn-D CO2 Welding Wire is crucial for preserving its quality and efficiency.: Store in sealed containers with humidity levels kept below 40% to effectively prevent oxidation and ensure longevity.
Form Availability: Our product is versatile and adaptable to various applications.: Available in convenient rods ranging from 3 to 6 mm in diameter, as well as coils, to cater to your specific welding needs.
| 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: Please pay special attention to this crucial information.:
RBCuZn-D is: Our distinctive formulation not interchangeable: It is essential to note that RBCuZn-D cannot be substituted with silicon bronzes (e.g., ERCuSi-A) or nickel alloys. It is engineered specifically for Cu-Zn base metals or dissimilar joints that demand exceptional seawater resistance, ensuring unparalleled performance.
For full specifications, refer to: For comprehensive details and technical specifications, AWS A5.8:2021 (Specification for Brazing Filler Metals): This authoritative document provides all necessary guidelines and specifications..
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