Grade H Solder
Plumber’s Leaded Solder Alloy
Grade H is a classic plumber’s solder alloy containing 34–35% tin and a balance of lead, designed for plumbing, industrial repairs, and utility applications. This solder is widely specified for making durable, reversible joints in copper and brass pipework, and meets British Standard BS219 (Alloy Number 6 to BSEN29453). Its broad, pasty melting range between 183–247°C allows precise joint positioning and clean, professional results with excellent mechanical strength.
Chemical Composition
| Element | Typical Range % |
|---|---|
| Tin (Sn) | 34.0–35.0 |
| Lead (Pb) | Balance |
| Antimony (Sb) | 0.30 max |
| Copper (Cu) | 0.08 max |
| Zinc (Zn) | 0.003 max |
| Iron (Fe) | 0.02 max |
| Bismuth (Bi) | 0.10 max |
| Cadmium (Cd) | 0.005 max |
| Arsenic (As) | 0.03 max |
| Aluminium (Al) | 0.001 max |
Key Benefits
- Broad melting range for versatile use and joint adjustment
- Excellent flow and wetting on copper, brass, and plumbing materials
- Complies with BS219 and BSEN29453 (Alloy Number 6) standards
- Ideal for wiping, sweating, and utility repairs
- Cost-effective compared to high tin solders and provides a strong, durable finish
Typical Applications
- General plumbing in domestic and industrial systems
- Utility company repairs and maintenance
- Lead loading, wiping, and sweating pipe joints
- Restoration work and metal joining requiring reliable yet reversible seals
Why Choose DKL Metals’ Grade H Solder?
DKL Metals delivers Grade H plumber’s solder with strict quality control for consistent melting behavior and reliable joint strength. Our technical expertise and UK-based supply ensure you receive a product trusted across plumbing and utility sectors for both new installations and ongoing maintenance.
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