Dates of SCUBA cylinder aluminum alloy changes

Dates by models when Luxfer changed the aluminum alloy in its scuba tanks from 6351-T6 to Luxfer’s proprietary 6061-T6 alloy.

S808 – May 1987

S72 – August 1987

S100 – August 1987

S80 – January 1988

S50 – April 1988

S92 – April 1988

S30 – May 1988

S63 – May 1988

S40 – June 1988