Description

The N-CuSn-C (AC/DC) electrode is designed for superior performance in welding copper alloys and mixed-metal applications. It produces high-quality phosphor bronze weld deposits with excellent mechanical properties, ensuring exceptional resistance to corrosion, abrasion, and metal fatigue.

This electrode delivers stable arc performance, smooth bead appearance, and outstanding metallurgical compatibility, making it suitable for both fabrication and heavy-duty repair work.

Key Features & Advantages

• Phosphor Bronze Weld Deposit for high durability

• Excellent corrosion, wear, and abrasion resistance

• Reliable weldability on both AC & DC+

• Ideal for copper-to-copper and copper-to-steel joining

• Produces clean, strong, and ductile welds

• Suitable for surfacing, overlaying, and rebuilding worn bronze components

• Works well in multiple welding positions

Recommended Applications

Ideal for welding and repairing:

• Phosphor bronze, brass, gunmetal, and similar copper alloys

• Copper alloys joined to steel, bronze, or brass

• Gears, bearings, bushings, and electrode holders

• Cast copper alloys and cast iron defects

• Surfacing applications requiring bronze strength

• Filling machining errors, casting flaws, and worn surfaces

Specifications

Standards

• AWS: A5.6 ECuSn-C

• JIS: DCuSnB

• Other: N/A

Typical Chemical Composition (%)

Typical Mechanical Properties

Sizes & Recommended Current Range (AC / DC+)

Welding Positions

• Flat

• Horizontal

• Vertical Up

• Fillet

• Overhead

Welding Instructions & Best Practices

Preparation

• Clean metal thoroughly — remove rust, paint, oil, grease, and moisture.

• Ensure clean surfaces for porosity-free welds.

Preheating Guidelines (Copper has high heat conductivity)

• For phosphor bronze & gun metal: 150–200°C

• For brass: 250–300°C

• No preheat needed for sections under 5 mm on ferrous-based materials.

Welding Technique

• Avoid excessive weaving; bead width should not exceed 3× the rod diameter.

• Weld with controlled heat to prevent distortion.

• Apply hot peening on each bead to refine structure and improve mechanical properties.

Approvals

• N/A

Important Note (Standard Disclaimer)

This information is provided as typical data only and not a guarantee of performance. Actual results depend on procedure, material condition, welding parameters, and job-specific conditions. Users should conduct qualification testing before final application.