GB/T 3077-2015 Translated English of Chinese Standard. (GBT 3077-2015, GB/T3077-2015, GBT3077-2015): Alloy Structure Steels
https://www.chinesestandard.net, 2016 M08 26 - 33 pages
This Standard specifies the classification and code, order content, size, shape, weight and allowable tolerance, technical requirements, test method, inspection rules, packaging, marking and quality certificate of alloy structure steel. This Standard applies to the hot-rolled and forged alloy steel bars which are not more than 250mm of nominal diameter or thickness. However, after negotiated by the Supplier and Demander, it is also allowed to supply hot-rolled and forged alloy steel bars which are more than 250mm of nominal diameter or thickness.
2/lot Different steel 80mm of nominal absolute value Advanced-quality steel Air Air Air air Oil air Water allowable tolerance alloy structure annealing bar shall comply bar’s nominal boron Brinell hardness Chemical composition mass code Designation Chemical comply with Table composition mass fraction content GB/T Coolant Heating temperature Decarburization Demander’s requirements Designation Chemical composition Designation Sample blank diameter or thickness Different steel bars digit code Designation Excellent-quality steel heat treatment system hot-rolled Impact energy absorption inert gas Nonmetallic inclusions Oil Oil Oil Oil Oil Water phosphorus pressure processing Quality steel quenching Coolant Heating quenching Second quenching Recommended heat treatment reduction of area Sample blank sizea/m m Second quenching Coolant spectrophotometric method GB/T Standard Standard’s designation steel and alloy steel bars GB/T Steel group structure steel sulfur Table 1 continued temperature/oC First quenching Tensile strength Rm/MPa test method titanium titration tungsten ultrasonic testing Unified digit code vanadium Water Water Water yield strength