grantadesign print

Home > Products > Reference data > Special projects > Lead-free solders

NIST Lead-Free Solder database

The European Union's RoHS (restriction on hazardous substances) directive, as well as similar legislation emerging in other jurisdictions, has accelerated the move from leaded to lead-free solders. However, these materials are relatively new - design data and long-term experience is lacking.

This data module of approximately 350 lead-free and lead-based solder materials is the most important publicly available repository of lead-free solder properties. Some intermetallics and pure metals are also included.

Properties listed include composition, economics, standard mechanical, electrical, and thermal data, manufacturability, wetting, and test results on fracture, plastic rupture and deformation, creep rupture and deformation, and fatigue. There are up to 40 property attributes per material.

The principal data source is: “Properties of Lead-Free Solders” by Sieward, Liu, Smith & Madeni (National Institute of Standards and Technology and Colorado School of Mines) v4.0 (2002). Additionally, NIST test data for fatigue and rupture properties have also been included.

The data module contains links to the references mentioned in this paper. No attempt has been made to fill "holes" in this data or to normalize properties.

Lead-free solder database in CES Selector