? ?

??? ??

??? ?? : 1450mm/1030mm ?? ??? ???? 900℃ ??? ? ??? ???? ??? ?? ??? ??????.?

YS(N/mm2) 200-210.?

???(N/mm2) 480-488.?

26-30%?

HV:137-147.


3退火.jpg


3退火1.jpg

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