Lawton Leaded Soft Solder Wire 500g — SOL-L3.0

Lawton leaded soft solder wire for plumbing and industrial applications on non-potable water supplies, heating, and gas installations. 25% tin, 74% lead, 1% antimony alloy (Pb74Sn25Sb1) compliant with EN-ISO 9453:2014 Alloy No. 136. 3mm diameter, 500g reel. Manufactured by Broquetas S.L., Spain.

Not suitable for potable water installations. For lead-free solder compliant with drinking water regulations, see Lawton ECO 1 Lead-Free Solder Wire (SOL-LF3.0).

• Leaded alloy — for non-potable water, heating, and industrial applications only
• Alloy 136 (Pb74Sn25Sb1) — EN-ISO 9453:2014
• 25% Tin, 74% Lead, 1% Antimony
• Melting range: 185–263°C
• 3mm diameter — standard trade size
• 500g reel, solid wire format
• Use with Lawton non-acid flux paste (SOL-FLF113 / SOL-FLF453)

How to Solder Copper Fittings

1. Cut and deburr — cut the copper pipe cleanly and remove the internal burr with a reamer or deburring tool.
2. Clean — clean the pipe end and fitting socket with wire wool or emery cloth until bright.
3. Apply flux — apply Lawton flux paste to both the pipe end and fitting socket using the brush in the cap.
4. Heat evenly — apply heat evenly around the fitting with a blowtorch until the flux bubbles and the copper reaches soldering temperature.
5. Apply solder — touch the solder wire to the joint (not the flame). The solder will be drawn in by capillary action. Apply until a complete ring is visible around the fitting.
6. Cool and clean — allow to cool undisturbed. Wipe away flux residue with a damp cloth.

Technical Specification

• Standard: EN-ISO 9453:2014
• Alloy No.: 136
• Alloy designation: Pb74Sn25Sb1
• Composition: 25% Tin, 74% Lead, 1% Antimony
• Melting range: 185–263°C
• Diameter: 3mm
• Format: Solid wire
• Weight: 500g reel
• Density: 10.54 g/cm³
• Colour: Silver grey
• Leaded: Yes — not for potable water use
• Origin: Spain (Broquetas S.L.)

Safety

Contains lead — harmful if ingested. Use in well-ventilated areas only. When heated, may emit fumes that can irritate eyes, nasal mucous, and respiratory tract. Use a mask in poorly ventilated spaces. Wear safety goggles during use. Gloves recommended during the heating process. Wash hands thoroughly after use. Keep away from food, drink, and children. Do not smoke while using. Full safety data available on request.

WARNING: Contains lead. USE ONLY IN WELL VENTILATED AREAS. Not for use on potable water installations.

Volume Pricing

Fixed trade price per reel regardless of quantity. Call 0161 775 1190 or contact us for account pricing.