Tongling Xinxin: RBCuZn-C Nickel-Bearing Low Fuming Bronze—The Precision Solution for High-Strength Brazing

In modern industrial manufacturing, whether it’s the intricate piping of HVAC systems or the precision repair

of heavy machinery, the quality of a brazed joint often determines the lifespan of the entire assembly. For welding

engineers, finding a filler metal that offers both exceptional flow and superior strength—while minimizing hazardous

fumes—is a constant challenge.

Today, we dive deep into the flagship product of Tongling Xinxin Welding Materials: RBCuZn-C (Nickel-

Bearing Low Fuming Bronze), and explore why it is the go-to choice for high-standard manufacturing.

1. RBCuZn-C: More Than Just "Low Fuming"

RBCuZn-C is a copper-based alloy classified under the AWS A5.8 standard. Unlike standard brass rods, its

composition is meticulously optimized with the addition of Nickel (Ni) and Silicon (Si), resulting in a qualitative leap

in performance.

The "Strength" of Nickel

The inclusion of Nickel significantly boosts the tensile strength and toughness of the joint. More importantly,

it dramatically improves the wetting action on steel, cast iron, nickel alloys, and even stainless steel. This ensures

the filler metal flows smoothly into the tightest gaps, creating dense, pore-free, and high-quality joints.

The "Clean" Magic of Silicon

Acting as a deoxidizing agent, Silicon effectively controls the evaporation of zinc. This not only reduces the

annoying white fumes (zinc oxide) during brazing—creating a cleaner work environment—but also ensures the

integrity of the weld by preventing the loss of mechanical properties due to "zinc burnout."

2. Core Advantages: Stable, Fast, and Strong

Universal Compatibility

● A truly versatile alloy, ideal for oxy-acetylene brazing of steel, cast iron, copper alloys, and nickel alloys.

Excellent Machinability

● The resulting weld bead is easy to grind, turn, or machine, simplifying post-weld finishing.

Wear & Corrosion Resistance

● Thanks to the Nickel content, the weld metal exhibits superior resistance to corrosion and wear, making it

perfect for surfacing valve seats, bearings, and other high-friction components.

3. Why Choose Tongling Xinxin Welding Materials?

As a specialist in copper alloy brazing solutions, Tongling Xinxin Welding Materials provides more than

just products; we deliver welding consistency.

High-Purity Raw Materials

● We strictly source electrolytic copper to ensure minimal trace impurities and stable chemical composition

across every batch.

Precision Drawing Process

● Utilizing multi-stage precision drawing and advanced surface treatment, our rods feature a high-gloss finish

for smooth feeding without contamination.

Versatile Supply Forms

● Available in straight rods, spools, and customized brazing rings specifically designed for the refrigeration industry.

Global Technical Support

● From Southeast Asia to South Asia, our technical team provides optimized process recommendations for

refrigeration, heavy industry, and surfacing applications.

4. Key Applications: From Lab to Factory

HVAC & Refrigeration: High-efficiency brazing of air conditioner compressors, evaporators, and piping.

Automotive Parts: High-strength brazing of shift forks and tubular brackets.

Maintenance & Repair: Crack repair in cast iron and buildup of worn shaft surfaces.

Conclusion

Brazing is not just about joining; it’s about extending the performance of materials. Tongling Xinxin’s RBCuZn-C

empowers your production with the strength of nickel.

If you are looking for a brazing solution that improves efficiency, enhances the shop floor environment, and

ensures joint integrity, contact us today for sample testing.

Tongling Xinxin Welding Materials Co., Ltd.

Your Professional Partner in Copper Alloy Brazing