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ASTM D943 copper and steel catalyst coil specimen in glass tube

ASTM D943 Copper & Steel Catalyst Coil

Copper and steel catalyst coil, conforms to ASTM D943.  These coils are used to evaluate the oxidation characteristics of inhibited mineral oils. These coils are also called 'copper and iron' catalyst coils. These catalyst coils are also used in EN 12205.


Coils are made from low-metalloid steel wire, No. 16 Washburn & Moen Gage (1.59mm diameter) and electrolytic copper wire, No. 14 AWG (1.63mm diameter), 99.9% purity.  The steel (iron) and copper wires are tightly twisted at one end and then wound simultaneously on a threaded mandrel, with the steel wire in the deeper thread. The overall length of the finished coil is 225mm +/- 5mm. The inner diameter is 15.9-16.5mm.  


Catalyst coils are individually packaged in glass tubes with nitrogen atmosphere with desiccant to prevent oxidation during storage.


Coils are ready to use straight from the package in the laboratory.


ASTM D943 is equivalent to ISO 4263 and DIN 51587.

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