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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 11030MPa.
GMW3399 CR MS1300 is cold rolled uncoated and coated steel coil or sheet , Martensitic(MS) quality.
CR MS1300 is Martensitic quality steel. The delivery condition of CR MS1300 steel can be common cold rolled( non coated), and Hot galvanized (coated).
“CR” means cold rolled, “1300T” means min tensile strength is 1300MPa, “1030Y” means min yield strength is 1030MPa.
The exact mechanical property requirements of CR MS1300 is : Yield strength: 1030-1300MPa, tensile strength is 1300-1500MPa, total Elongation in 80mm is min 3.0%, Bending radius longitudinal and transverse is min 4.0t
