Rolls-Royce Archives
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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).
Summary of I.A.E. research findings on material wear resistance for components like cylinders and piston rings.

Identifier  ExFiles\Box 132\4\  scan0070
Date  27th May 1937
  
1124. I.A.E. Research (1931) 27-5-37

Besides that

① Hardness is unreliable criterion & resistance to wear of cast iron
② most evidence favours a piston ring hardness equal or greater than cylinder.
③ Cast iron with pearlitic or sorbitic base have highest resistance to wear
⑧ nickel does not necessarily increase resistance to wear
⑨ Hardened liners appear to wear well
⑩ Phosphorus increases resistance to wear.
⑪ Cylinder wear could almost be eliminated by use of nitrided liners
⑫ Lapped or honed finish reduces initial wear
#
General Motors
General motors experiments showed that as combined carbon was increased from .2% to .75% wear decreased
  
  


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