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ANSWER: JFS A 1001 JSH540A steel is the hot rolled steel sheet and strip for automobile use .
JSH540A pickled steel is under the Japanese standard JFS A 1001. JSH540A high hole expansion ratio type automobile use steel is high hole expansion ratio quality, the thickness range of JSH540A is from 1.6mm to 6.0mm. The Carbon chemical composition of JSH540A is max 0.25%. The tensile strength of JSH540A steel is min 540 MPa. The yield strength of JSH540A steel is 355MPa to 510MPa, The elongation of JSH540A steel is min 22%.
There are three different surface finish of the JSH540A steel: B ( As hot rolled), P (pickling), S ( Shot blasting)