Newton's metal is a
fusible alloy with a low
melting point. Its composition by weight is 8 parts
bismuth, 5 parts
lead and 3 parts
tin; its melting point is 97 °C.
Newton's metal is comparable to
Cerrobend, but avoids its toxic
cadmium content. This has encouraged its use for medical applications for easily shaped shielding during
radiotherapy
Radiation therapy or radiotherapy, often abbreviated RT, RTx, or XRT, is a therapy using ionizing radiation, generally provided as part of cancer treatment to control or kill malignant cells and normally delivered by a linear accelerator. Radia ...
.
References
Fusible alloys
{{alloy-stub