GB/T 8738-2014Zinc alloy ingots for casting (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

This standard replaces GB/T 8738-2006 "cast zinc alloy ingots." This standard compared with GB/T 8738-2006, major changes as follows.

--- Remove the "directory";

--- Modified ZnAl4Cu0.4 grade ingredients;

--- Increased billets physical specifications;

--- Increase grades ZnAl17Cu4;

--- Increasing the arbitration analysis method with zinc alloy ingot casting nickel;

--- Added Appendix A.

The standard reference used EN1774:1997 "zinc and zinc alloy zinc alloy ingot casting and casting liquid" in grades 7 and of Chemical composition.

This standard EN1774:1997 compared to the main changes are as follows.

--- The ZnAl4, ZnAl4Cu1, Al content ZnAl4Cu3 three grades by between 3.8% and 4.2% revised to 3.9% ~ 4.3%;

Mg levels ranging from 0.035% to 0.06% revised to 0.03% ~ 0.06%; Cu content ZnAl4Cu3 grades of from 2.6% 3.1% revised to 2.7% ~ 3.3%; canceled the three grades of Si requirements;

--- The corresponding foundry industry in China GB/T 1175-1997 "cast zinc alloy" in grades, this standard also uses the standard ZnAl9Cu2Mg, ZnAl11Cu5Mg two grades (to improve the chemical composition of some impurities content requirements).

1 Scope

This standard specifies the use of zinc alloy ingot casting requirements, test methods, inspection rules, packaging, labeling, transportation, storage and quality certificate in the And contracts (or orders) content.

This standard applies to the casting (sand type casting, metal mold casting and die casting, etc.) with zinc alloy ingots.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 8170 repair value expressed about the rules and limit values and judgment

GB/T 12689.1 zinc and zinc alloy analysis methods - Part 1: Determination of the amount of chrome aluminum azure S- octyl polyethylene glycol phenyl ether - Cetylpyridinium bromide, spectrophotometry, CAS spectrophotometry and EDTA titration

GB/T 12689.3 zinc and zinc alloys - Determination of cadmium content by flame atomic absorption spectrometry

GB/T 12689.4 zinc and zinc alloys - Determination of the amount of copper diethyl dithiocarbamate spectrophotometry lead, Flame atomic absorption spectrometry and electrolysis

GB/T 12689.5 zinc and zinc alloys - Determination of iron content sulfosalicylic acid and flame atomic absorption spectrophotometry Income Spectrometry

GB/T 12689.6 zinc and zinc alloy chemical analysis method for determination of lead content oscillopolarographic method

GB/T 12689.7 zinc and zinc alloy chemical analysis - Part 7: Determination of magnesium content - Flame atomic absorption spectrometry

GB/T 12689.8 zinc and zinc alloys - Determination of silicon content - Molybdenum blue spectrophotometric method

GB/T 12689.10 zinc and zinc alloys - Determination of tin content Phenylfluorone - cetyl trimethylamine spectrophotometry DEGREE

3 Requirements