According to its surface quality, pickling ASTM A572 gr60 hot rolled plates sheet steel can be divided into I and N two groups; According to its cup protrusion depth can be divided into ordinary and deep two levels. Application: Mainly used in such as body clock case, flashlight case, instrument case, lamp mouth, automobile brake drum, etc. Steel plate size: thickness of 0.25-2mm.
ASTM A572 gr60 hot rolled plates, Chinese material Q235B is one of the most widely used carbon steel in the world. Some like to compare its strength with other equivalent steel grades. We need to take care that the Q235B steel strength varies with thickness. For the min. yield strength of Q235B steel plate: it is 235Mpa if thickness ≤16mm, 225 Mpa for thickness 16-40mm, 215 Mpa for thickness 40-60mm, 205 Mpa for thickness 60-100mm, 195 Mpa for thickness 100-150mm, 185 Mpa for thickness over 150mm. The tensile strength of Q235B steel plate is 375-500 Mpa.
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The aging treatment of ASTM A572 gr60 hot rolled plates steel plate: in order to eliminate the size and shape changes of precision measuring tools or molds and parts in long-term use, the workpiece is often reheated to 100℃ -150 ℃ and maintained for 5-20 hours before finishing at low temperature after tempering. This ASTM A572 gr60 hot rolled plates process is called aging to stabilize the quality of precision parts.It is particularly important to aging steel members under low temperature or dynamic loading conditions to eliminate residual stress and stabilize steel structure and size.
