YS/T 571-2009Copper-beryllium alloy round wire (English PDF)

Foreword

This revised standard adopts ASTMB197/197M-01 "beryllium copper alloy wire." this standard compared with ASTMB197/197M-01, except.

--- This standard specifies only the shape of a circular wire, ASTMB197/cross-sectional shape 197M-01 standard is circular, rectangular Shape, square, hexagonal and octagonal wire;

--- This standard is based on ASTMB197/197M-01 on the increase QBe2 and QBe1.9 grades;

--- Diameter tolerances specified in this standard is stricter than ASTMB197/197M-01 standards;

--- Mechanical properties of the standard requirements than ASTMB197/197M-01 standard is slightly lower.

Instead of the standard YS/T 571-2006 "Beryllium line" (formerly GB/T 3134-1982).

Compared with this standard YS/T 571-2006, the main changes are as follows.

--- Expanding the scope of the standard; the new increase QBe1.9, C17200 and C17300 grade; raised some size to allow deviation Accuracy; increase the weight limit of the reel; revised aging heat treatment process;

--- Increased supply state 1/4 hard (Y4), 3/4 hard (Y1), soft-aging (TF00), 1/4 hard Aging (TH01), 1/2 hard Aging (TH02), 3/4 hard Aging (TH03) and hard aging (TH04);

--- Mechanical properties section, the 1/4 hard (Y4), 3/4 hard (Y1) performance and improve the performance range of cold state; increased Tensile strength upper portion;

--- Test Method to the winding metal wire repeated bending test method.

Appendix A of this standard is the data appendix.

This standard by the National Standardization Technical Committee of non-ferrous metals and centralized.

This standard by the Ningxia Orient Tantalum Industry Co., Ltd. is responsible for drafting.

1 Scope

This standard specifies the beryllium line requirements, test methods, inspection rules and signs, packaging, transportation, storage and purchase order (or contract), etc.

content.

This standard applies to the manufacture of precision springs beryllium copper round wire, instrumentation, and other components of the elastic element.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 228-2002 metallic materials at room temperature tensile test method GB/T 238 metal wire repeated bending test method for materials GB/T 351 metal material resistivity measurement method GB/T 5231 Wrought copper and copper alloy chemical composition and shape of the product GB/T 8888 heavy non-ferrous metal processing products packaging, labeling, transportation and storage YS/T 470.1 beryllium copper alloys - Inductively coupled plasma emission spectrometry beryllium, cobalt, nickel, titanium, iron, aluminum, Silicon, lead, magnesium content

3 Requirements