When selecting solder materials for industrial or electronic applications, one of the most important choices is between lead-free and lead-based solder alloys. Each type has specific advantages depending on your application, manufacturing standards, and regulatory requirements.
Lead-based solder is a traditional alloy, commonly made from a mix of tin (Sn) and lead (Pb) — typically 60/40 or 63/37 ratios. It has been used for decades in electronics, plumbing, and general soldering due to its low melting point and ease of use.
Benefits of Lead-Based Solder:
Lower melting point (~183°C)
Smooth solder flow and easy wetting
Strong, durable joints
Cost-effective in bulk manufacturing
Common Uses:
Traditional electronics assembly
Plumbing and metal joining
General-purpose soldering in non-regulated environments
Lead-free solder is made without lead, often using alloys such as tin-silver-copper (SnAgCu) or tin-copper (SnCu). It is now required by many global regulations, especially for electronics and consumer goods.
Benefits of Lead-Free Solder:
RoHS compliant and environmentally safe
Reduced health and environmental risks
Suitable for export to countries with strict lead regulations
Challenges:
Higher melting point (~217–227°C)
May require more heat and active flux
Can be more brittle if not applied correctly
Common Uses:
Consumer electronics manufacturing
Medical devices and automotive components
Products exported to EU and other RoHS-compliant regions
Choosing the right solder alloy depends on your:
Application type (plumbing vs electronics)
Regulatory environment (RoHS-compliant or not)
Production process and equipment
Cost and performance balance
At Nationals Solder, we supply both lead-based and lead-free solder alloys tailored to meet a wide range of industrial and commercial needs. Our technical team can help you choose the best alloy for performance, reliability, and compliance.