aLSO, DOES STEEL C45 REFER TO THE CARBON IN IT?ALSO, WHAT IS AIRCRAFT GRADE PLYWOOD AND WHERE DOES ONE GET IT
chromium nickle steel aka stainless steel exact amount of chrome and nickle will determine type/grade numbers Check the google for steel type/grade Never head of aircraft grade, however,, there is marine grade - normally baltic birch with waterproof glue and no defects i.e. knots, etc. Very strong (also quite expensive) but worth it for the correct applications
