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ANSWER: GMW3399 is the specification covers the requirements for continuous cast, hot rolled or cold rolled steel sheet with specified tensile strength from 450MPa through 1875MPa.
GMW3399 CR MP1200 is cold rolled uncoated and coated steel coil or sheet , Multi- phase(MP) quality.
CR MP1200 is Multi- phase quality steel. The delivery condition of CR MP1200 steel can be common cold rolled( non coated), and Hot galvanized (coated).
“CR” means cold rolled, “1180T” means min tensile strength is 1180MPa, “875Y” means min yield strength is 875MPa.
The exact mechanical property requirements of CR MP1200 is : Yield strength: 875-1150MPa, tensile strength is 1180-1350MPa, total Elongation in 80mm is min 5.0%, Bending radius longitudinal and transverse is min 3.5t
