Grade D Solder
Plumber’s Leaded Solder Alloy
Grade D is a traditional plumber’s solder alloy that combines approximately 30% tin with 70% lead. Professional plumbers and restorers widely choose it to create permanent yet reversible joints in plumbing systems because it offers excellent mechanical strength and reliable flow characteristics. Furthermore, this alloy meets the stringent requirements of British Standard BS219 (Alloy No.15 to BSEN29453), giving users confidence in its durability and ease of use.
Chemical Composition
| Element | Typical Range % |
|---|---|
| Tin (Sn) | 29.0 – 30.0 |
| Lead (Pb) | Balance |
| Antimony (Sb) | 1.5 – 1.8 |
| Copper (Cu) | 0.08 max |
| Zinc (Zn) | 0.003 max |
| Iron (Fe) | 0.02 max |
| Bismuth (Bi) | 0.25 max |
| Arsenic (As) | 0.03 max |
| Aluminium (Al) | 0.001 max |
Key Benefits
- Ideal for plumbing applications requiring durable, reversible joints
- Specified to BS219 and BSEN29453 (Alloy No.15)
- Wide melting range of approximately 185-257°C for flexible handling
- Excellent wetting and flow on copper, brass, and other piping
- Trusted by vehicle restorers for lead loading and repairs
Typical Applications
- Making lead flashing and sealing joints in plumbing
- Vehicle restoration lead loading and bodywork repair
- General-purpose joining of copper and brass plumbing components
Why Choose DKL Metals’ Grade D Solder?
At DKL Metals, we supply Grade D plumber’s solder with strict quality control and consistent composition. Our product ensures reliable performance that meets professional standards, combined with expert UK-based customer support and fast delivery to keep your work on track.
Learn More!