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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification number 215A for Cast Brass for general casting work.

Identifier  ExFiles\Box 176\3\  img109
Date  19th May 1919
  
COPY.

ROLLS ROYCE LIMITED. 19th. May. 1919.

SPECIFICATION NUMBER 215A.

MATERIAL. CAST BRASS (for general casting work.)

ANALYSIS. Copper .. .. .. .. .. .. 65.0 to 69.0%
Zinc .. .. .. .. .. .. .. 30.0 to 34.0%
Lead .. .. .. .. .. .. .. Maximum 1.2%
Tin .. .. .. .. .. .. .. .5%
Other impurities.. .. .. .. .3%

TESTS. Test piece to be cast in sand 1.000 dia.
and machined down to .564.

(a) BRINELL : 55-72 (as sand cast.)

(b) TENSILE : M.S. Y.P. E.{Mr Elliott - Chief Engineer} R.A.
15 tons, 11 tons, 15% 32%
  
  


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