公开(公告)号：US3911819A

公开(公告)日：1975-10-14

申请号：US45179574

申请日：1974-03-18

Applicant: ALUSUISSE

Inventor： PRYOR MICHAEL J ,  FORD JAMES A ,  DEAN SHELDON W

IPC: C22F1/047 ,  B41N1/08 ,  C22C21/00 ,  C22C21/12 ,  C22F1/00 ,  C22F1/04 ,  C25D7/00

CPC classification number: C22C21/00 ,  Y10S428/926 ,  Y10T428/1275

Abstract: The present invention consists of an aluminum alloy having a high fatigue strength which is particularly suited for use in the fabrication of printing plates for offset lithography. The alloy contains from 0.2 to 0.75% magnesium, from 0.45 to 0.7% copper, from 0.1 to 0.7% iron and up to 0.3% silicon. The alloy, when processed according to the process of the present invention possesses a uniquely high fatigue strength.

Abstract translation: 本发明由具有高疲劳强度的铝合金组成，其特别适用于制造用于胶版印刷的印版。 该合金含有0.2至0.75％的镁，0.45至0.7％的铜，0.1至0.7％的铁和至多0.3％的硅。 该合金在根据本发明的方法加工时具有独特的高疲劳强度。