60/40 solder

60/40 solder consists of 60% Tin (Sn) and 40% Lead (Pb). When sourcing, you must verify the melting point, which typically ranges between 183°C and 190°C. For electronics, ensure the flux core type (usually Rosin Mildly Activated or RMA) and the wire diameter (e.g., 0.8mm, 1.0mm) match your specific application requirements. High-quality solder should have low impurity levels to prevent 'cold joints'.

Since 60/40 solder contains lead, it is subject to strict regulations. For the EU market, it does not comply with RoHS (Restriction of Hazardous Substances) for general consumer electronics, though it may be used in exempted sectors like aerospace or military. You must ensure the supplier provides MSDS (Material Safety Data Sheets) and complies with ISO 9453 standards for soft solder alloys.

Request a chemical composition analysis report from a third-party lab to confirm the tin-to-lead ratio. Evaluate the wetting properties (how quickly the solder flows) and the residue level left after soldering. Reliable suppliers on Made-in-China.com often hold ISO 9001 certification, ensuring consistent batch-to-batch quality and weight accuracy of the spools.

60/40 solder is preferred for manual soldering and repair work because it has a lower melting point and better flow than lead-free options. It is widely used in PCB assembly (non-RoHS), stained glass work, and cable terminations. However, due to lead toxicity, it should be used in well-ventilated areas with proper fume extraction systems.

The biggest risk is customs seizure if the destination country has strict environmental laws (like the EU's RoHS). Always verify if your specific industry allows leaded solder. Additionally, fluctuating raw material prices for Tin and Lead can affect your final quote; it is wise to lock in prices with a short-term validity contract.

Focus on volume-based pricing tiers. For orders exceeding 500kg, you can typically negotiate a 5-10% discount. Ask for OEM packaging (custom labels) to be included in the price. Ensure the supplier agrees to a pre-shipment inspection to verify the net weight of the solder, as lead is heavy and shipping costs are significant.

Solder is heavy, so sea freight is the most economical method for bulk orders. Because it contains lead, it may be classified as hazardous material (HazMat) depending on the jurisdiction. Ensure the supplier provides proper labeling and heavy-duty palletizing to prevent spool breakage during transit. Always use Trade Assurance or secure payment terms to protect your transaction.