GB/T 8012-2013Casting tin-lead solders (English PDF)

Foreword

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

This standard replaces GB/T 8012-2000 "casting tin-lead solder." This standard compared with GB/T 8012-2000, the main technical content Changes are as follows.

--- Grade 40 by the reduced 37. A class adds two grades codenamed 15A, 5A's. Class B Delete codenamed 35B, 30B, 25B, 20B of the four grades. Containing silver solder delete codenamed 63Ag, 60Ag, 50Ag of three grades, increase codenamed Ag1.5, Ag2.5 the two grades;

--- Chemical composition partly modified. Code 63AA of impurity elements in bismuth by the <=0.005% revised to <=0.008%;

A class codenamed 63A, 60A, 55A, 50A, solder containing silver solder and phosphorus content of bismuth by the modification of <= <=0.01% 0.020%, codenamed Ag2 containing silver solder silver content from 1% to 4% (specific content agreed by both parties) is amended as 1.80% - 2.20%;

--- Delete the original standard "in addition to Sb, Bi, Cu, impurity is not greater than the sum of 0.08%" requirement;

--- The requirement to remove physical properties;

--- Increased production sampling requirements of the product;

--- Deleted "Article weight, 250 ± 25g" provisions.

The standard reference used by the US ASTMB32-2008 "solder metal standards", the international standard ISO 9453-2006 "solder Alloy chemical composition and shape "and the Japanese standard JISZ3282-2006" solder chemical composition and shape. " Various grades of impurities Limited are stricter than the corresponding grades above standard limits of impurities. Reference to the physical properties of cast tin-lead solder in Appendix A, and ASTMB32-2008 grades contrast Appendix B.

This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.

1 Scope

This standard specifies the requirements for casting tin-lead solder, test methods, inspection rules, marking, packaging, transportation, storage and quality certificates as well as Contract (or purchase order) content.

This standard applies to wet, fire refining production casting tin-lead solder.

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 \u200b\u200band judgment GB/T 10574 (all parts), chemical analysis of tin Method

3 Requirements