| 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: An In-Depth Technical Summary
AWS A5.8 Designation: RBCuZn-D (historically recognized as 'Naval Brass')
Material Type: A robust Copper-Zinc alloy (Cu-Zn-Sn system) enriched with tin, offering superior corrosion resistance.
Key Use: Essential for the durable joining of copper alloys, steel, and cast iron in environments where protection against seawater and chemical corrosion is paramount.
Table 1: Precise 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): Crucial for enhancing resistance against seawater dezincification.
Fe (Iron): Vital for boosting strength and wear resistance properties.
Low Pb/Si: Reduces hot cracking potential during welding processes.
As-Deposited:
Tensile Strength: 410-510 MPa, ensuring robust performance.
Hardness: 85-105 HB, offering durability under stress.
Melting Range: 885-900°C (solidus-liquidus), allowing reliable application across various conditions.
Corrosion Resistance: Unmatched performance in seawater, marine atmospheres, and mild acids/alkalis.
Marine Engineering: Perfect for ship propellers, seawater piping systems, and condenser tubes.
Industrial: Ideal for heat exchangers, pump components, and valve bodies.
Repair: Excellent for joining or building up manganese bronzes and high-tensile brasses.
Process Compatibility:
Oxy-Acetylene Welding (OAW): Optimal for repairing cast iron components.
Gas Tungsten Arc Welding (GTAW/TIG): Designed for creating precision joints (utilize DCEN polarity).
Parameters:
Flux Requirement: AWS Type FB3-A or borax-based flux is essential to thwart oxidation.
Preheat: 150-260°C for robust welding of thick sections or cast iron.
Interpass Temp.: Maintain ≤200°C to prevent Zn fuming during the welding process.
Zinc Fume Hazard: To ensure a safe working environment, it is imperative to employ local exhaust ventilation (LEV) and utilize OSHA-approved respirators.
Storage: Please store in sealed containers with less than 40% humidity to effectively prevent oxidation and maintain the integrity of the product.
Form Availability: Available in versatile forms such as rods with diameters ranging from 3-6 mm, as well as convenient 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 |
Critical Note:
RBCuZn-D is not interchangeable with silicon bronzes such as ERCuSi-A or nickel alloys. This specialized product should be used exclusively for Cu-Zn base metals or for dissimilar joints that demand outstanding seawater resistance.
For full specifications, refer to AWS A5.8:2021 (Specification for Brazing Filler Metals).
){kind=link}