GB/T 33201-2016NCu30-3-0.5 alloy bar,wire,forgings and forging stock—General specification (English PDF)

1 Scope

This Standard specifies the purchasing information, chemical composition, mechanical property, dimensions and allowable deviation, internal and surface mass, sampling, number of testing, sample preparation, test method, inspection, rejection and re-inspection, certificate of quality and marking requirements of NCu30-3-0.5 alloy products.

This Standard applies to hot-worked and cold-worked NCu30-3-0.5 alloy bar, of which the cross section is circular, square, hexagonal and rectangular (hereinafter referred to as round bar, square bar, hexagonal bar and flat bar), forgings, forging stock and cold-worked wire.

2 Normative references

The following documents are indispensable for the application of this document.

For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 5235, Wrought nickel and nickel alloys. Chemical composition and forms of wrought products

GB/T 8170, Rules of rounding off for numerical values & expression and judgment of limiting values

GB/T 8888, Wrought heavy non-ferrous metal products - packing, marking, transportation, storing and certificate of quality ASTM E8, Test methods for tension testing of metallic materials ASTM E18, Test methods for Rockwell hardness of metallic materials

ASTM E140, Hardness conversion tables for metals relationship among Brinell hardness, Vickers hardness, Rockwell hardness, surface hardness, Knoop hardness and scleroscope hardness

3 Terms and definitions

The following terms and definitions are applicable to this document.

4 Purchasing information

The purchase order which is formed in accordance with this Standard shall contain the following information:

a) standard name and version number;

b) alloy name or grade (see Table 1);

c) product shape, such as round bar, square bar, hexagonal bar or flat bar, that is attached with forging sketch or CAD drawing;

d) supply status (see Table 2, Table 3 and Table 4);

e) product dimensions, including length (see Tables 5 and 6);

f) forging stock; if the raw material is forging stock, it shall be stated;

g) surface roughness;

h) quantity: in pieces;

i) certificate of quality or test report result (see Chapter 15);

j) sampling test;

k) When the buyer requests the supplier to perform on-site witness or inspection, it shall be indicated in the purchase order.

5 Chemical composition

The chemical composition of the material and the buyer's test analysis deviation shall comply with the requirements of Table 1. in the same batch of products.

9 Sampling

9.2.3 For non-aging products, take samples from the same batch of products in accordance with 9.1.2; and take samples from the delivered products or used forging rods. When performing aging or annealing + aging treatment on samples according to Table 3 or Table 4, if products of the same batch have been tested under the specified conditions and meet the requirements of the standard, the non-aging products of the same heat number may not be tested.

10 Number of testing

11 Sample preparation

13 Inspection

The supplier and the buyer shall agree on the inspection and write into the order contract.

14 Rejection and re-inspection

If the product does not meet the standard requirements, it can be rejected; and the buyer shall promptly notify the supplier in written form. If the supplier disagrees with the inspection result, it may request a re-inspection.

15 Certificate of quality

The supplier shall provide the certificate of quality which proves that the product has been produced, tested and inspected according to relevant standards and the sampling test results meet the standard requirements, as well as the test report.

16 Product marking

According to GB/T 8888, the following information shall be identified on the product and its packaging, labels and trademarks:

a) product name or grade;

b) heat number;

c) status;

d) standard name and version number;

e) dimensions;

f) gross weight, tare weight and net weight;

g) shipping and receiving address;

h) contract or order number and others. […]