Tel : 0086-0371-86172891
Tel : 0086-0371-86172891
ASK:
ANSWER: GMW3399 is the specification covers the requirements for continuous cast, hot rolled or hot rolled steel sheet with specified tensile strength from 450MPa through 1700MPa.
GMW3399 HR FB450 is hot rolled uncoated and coated steel coil or sheet , dual phase with high hole expansion (ferrite+Bainite) (FB) quality.
HR FB450 is ferrite+Bainite (dual phase with high hole expansion) quality steel. The delivery condition of HR FB450 steel can be common hot rolled( non coated), and Hot galvanized (coated).
“HR” means hot rolled, “450T” means min tensile strength is 450MPa, “300Y” means min yield strength is 300MPa.
The exact mechanical property requirements of HR FB450 is : Yield strength: 300-380MPa, tensile strength is Min 450 MPa, total Elongation in 80mm is min 24%,
