| Customization: | Available |
|---|---|
| Type: | Rolling Wire |
| Material: | CO2 |
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
RBCuZn-D Brass Welding/Brazing Filler Metal: Technical Summary
AWS A5.8 Designation: RBCuZn-D (once widely recognized as the distinguished 'Naval Brass')
Material Type: A superior Copper-Zinc alloy (Cu-Zn-Sn system) infused with tin, offering outstanding corrosion resistance.
Key Use: Ideal for seamlessly joining copper alloys, steel, and cast iron in environments where seawater or chemical corrosion resistance is paramount.
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): Elevates resistance to seawater dezincification.
Fe (Iron): Augments strength and enhances wear resistance.
Low Pb/Si: Drastically reduces hot cracking occurrences during welding.
As-Deposited:
Tensile Strength: A robust 410-510 MPa
Hardness: Ranges between 85-105 HB
Melting Range: 885-900°C, from solidus to liquidus
Corrosion Resistance: Exceptional in seawater, marine atmospheres, and even in mild acids or alkalis.
Marine Engineering: Perfect for ship propellers, seawater piping, and condenser tubes.
Industrial: Essential in heat exchangers, pump components, and valve bodies.
Repair: Especially for joining or building up manganese bronzes and high-tensile brasses.
Process Compatibility:
Oxy-Acetylene Welding (OAW): Highly preferred for cast iron repairs.
Gas Tungsten Arc Welding (GTAW/TIG): For precision joints, utilize DCEN polarity for optimal results.
Parameters:
Flux Requirement: Use AWS Type FB3-A or borax-based flux, crucial to avert oxidation.
Preheat: Maintain 150-260°C for thick sections or cast iron.
Interpass Temp.: Keep at ≤200°C to prevent Zn fuming occurrences.
Caution: Zinc Fume Hazard: Ensure your workspace is equipped with efficient local exhaust ventilation (LEV) and safeguard your breathing with OSHA-approved respirators.
Optimal Storage Conditions: Store in sealed containers with humidity levels maintained below 40% to effectively prevent unwanted oxidation.
Form Availability Options: Available as rods with diameters ranging from 3-6 mm, and conveniently packaged coils.
| 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 |
Essential Critical Note:
RBCuZn-D Welding Wire is strictly not interchangeable with silicon bronzes such as ERCuSi-A or nickel alloys. Specifically designed for use with Cu-Zn base metals or to form dissimilar joints where exceptional seawater resistance is required.
For comprehensive specifications, please refer to AWS A5.8:2021 (Specification for Brazing Filler Metals).
){kind=link}