GB/T 5216-2004 Translated English of Chinese Standard. (GBT 5216-2004, GB/T5216-2004, GBT5216-2004): Structural steels subject to end-quench hardenability requirements [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 2015 M01 25 - 44 pages This standard specifies the steel dimensions, shape, weight and permissible tolerances, technical requirements, test methods, inspection rules, packaging, sign and quality certificate etc. of the hot rolling and hot forging structural steels subject to end-quench hardenability requirements. This standard is applicable to the hot rolling and forging structural steel bars of hardenability used in machinery manufacture with its diameter or thickness no less than 30 mm. The steel hardenability is determined by edge quenching or calculated by the formula. |
Contents
Corrigendum | 6 |
Order Contents | 9 |
Classification and Code Number | 10 |
Technical Requirements | 11 |
In Article 6 3 add according to the agreement of the supply and purchaser about | 13 |
Testing Method | 17 |
Inspection Rules | 18 |
Appendix A Informative Calculation Methods of Steel Hardenability | 39 |
Appendix B Informative Comparison Table of Newlyadded Grades Listed in Table 1 | 44 |
Common terms and phrases
20 Figure 30 bands Max Analysis of Iron annealing or high awayaway fromfrom thethe calculated according carbon content Charpy Impact Test Chemical Analysis content mass fraction delivery Determination of Nickel Different pieces Dimethylglyoxime Distanceaway end-quench hardenability End-quenching temperature 850±5 End-quenching temperature 925±5 end/mm Normalizing temperature ends hardenability 1.5 ends hardenability bands eqv ISO form the quenched fromfrom thethe quenchedquenched Grade H band H Min 40 hardenability bands 1.5 HH Min 43 high-grade fine steel HL Min 39 HL Min 40 homogeny ideal critical diameter listed distances listed distances mm macrostructure Method GB/T Methods for Chemical minimum hardness values Normalizing temperature End-quenching permissible variation Phosphorus Content GB/T pieces of steel quenched end/mm Distance quenched end/mm Normalizing quenched ends hardenability Range of HRC specified in Table Steel and Alloy steel bar GB/T steel billet Steel GB/T structural steel supply and purchaser temperature End-quenching temperature thethe quenchedquenched end unified numbering weight and permissible