SCHEDULE 1Essential Safety Requirements
PART 1Materials
Aluminium vessels6
1
Non-alloy aluminium must have an aluminium content of at least 99.5% and the alloys referred to in regulation 2(1)(b) (interpretation) must display adequate resistance to intercrystalline corrosion at maximum working temperature.
2
Moreover, these materials must satisfy the following requirements—
a
they must by supplied in an annealed state;
b
they must have the following mechanical characteristics per product—
i
the maximum tensile strength Rm, max must be no more than 350 N/mm2,
ii
the elongation after fracture must be—
aa
A ≥ 16% if the test piece is taken parallel to the direction of rolling;
bb
A ≥ 14% if the test piece is taken perpendicular to the direction of rolling.