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ANSWER: JIS G 3135 SPFC590 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.
SPFC590 also called SPFC35 whose applied thickness is 0.6 and over to 2.3 mm . SPFC590 is a forming use quality use steel material The carbon composition of all the above grades is max 0.12%. The yield strength of SPFC590 is min 355MPa, tensile strength is min 590MPa, Elongation is min 17%
