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ANSWER: JIS G 3135 SPFC490Y steel is cold rolled or cold reduced high strength steel sheet or steel strip with improved formability for automobile use.
JIS G 3135 is Japanese industrial standard specifications the cold rolled high strength steel sheets with improved formability principally used for structure of automobile.
SPFC490Y also called SPFC35 whose applied thickness is 0.6 and over to 2.3 mm . SPFC490Y is a low yield ratio type quality use steel material The carbon composition of all the above grades is max 0.12%. The yield strength of SPFC490Y is min 225MPa, tensile strength is min 490YMPa, Elongation is min 24%
