Ingots of Cerroshield Alloy

Chemical Engineering · Jowlabar Collection

Accession Number: 2017.che.90.1-2


Two small metallic ingots. The ingots have a rectangular footprint and taper slightly towards the top surface. The ingots have moulded lettering on their top surfaces.

Alternative Name: Cerroshield Ingots.

Primary Materials: Metal: Bismuth, Lead, Tin.


The top surface of both ingots has the following moulded inscription: “CERROSHIELD 203° F ®”.

Dimensions (cm):

Each ingot is: Height = 3, Width = 3.5, Length = 8.5;


Cerroshield alloy is a fusible alloy with a low melting temperature. It contains bismuth, lead, and tin.

Condition: Excellent

Manufacturer: CS Alloys, USA.

Date of Manufacture: After 1991.


This artifact was donated by Professor Paul Jowlabar of the University of Toronto Department of Chemical Engineering and Applied Chemistry. It was acquired by the UTSIC project on December 4, 2017.

Professor Jowlabar acquired a substantial of historical artifacts from his department by saving important items from disposal. He donated his collection to the Institute for the History and Philosophy of Science and Technology (IHPST) in 2017.