GB/T 3623-2022Titanium and titanium alloy wire (English PDF)

6.1 Chemical composition

The chemical composition analysis of the product is carried out according to the provisions of GB/T 4698 (all parts) or YS/T 1262. Arbitration analysis is carried out in accordance with the provisions of GB/T 4698 (all parts).

6.2 Dimensions and allowable deviations

The measurement of the dimensions of the product and allowable deviations shall be carried out in accordance with the provisions of GB/T 38982.

6.3 Tensile properties

The tensile properties test at room temperature of the product is carried out in accordance with the provisions of GB/T 228.1. The original gauge length L0 of the specimen shall meet the following requirements.

- When the diameter is less than 4.0mm, L0=50mm;

- When the diameter is not less than 4.0mm, L0=4d0.

6.4 Macrostructure

The macrostructure inspection of the product is carried out in accordance with the provisions of GB/T 5168.

6.5 Appearance quality

The appearance quality of the product is carried out by the method of visual inspection.

7.1 Inspection and acceptance

7.1.1 The products shall be inspected by the supplier or a third party.

7.1.2 The purchaser may inspect the products received in accordance with the provisions of this document. When the inspection results do not conform to the provisions of this document or the purchase order, it shall be submitted to the supplier in writing and resolved through negotiation between the supplier and the purchaser.

Objections belonging to dimensions as well as their allowable deviations and appearance quality shall be raised within one month from the date of receipt of the product. Objections belonging to chemical composition, tensile properties and macrostructure shall be raised within three months from the date of receipt of the

7.5.3 In the tensile property test, when the test result of one specimen fails, double specimens shall be taken from the batch of products for re-inspection. When there is still one specimen that fails to pass the re-inspection, the batch of products is determined as rejected. However, the supplier can inspect roll by roll (disc, piece). The qualified ones will be re-batched and delivered.

7.5.4 When the macrostructure inspection result fails, the batch of products is determined as rejected. […]

8.1 Signs

8.1.1 Product signs

Labels or signs shall be attached to the products that have passed the inspection. At least the following information shall be indicated.

a) Manufacturer's name and trademark;

b) Designation;

c) Specification;

d) State;

e) Batch number;

f) Reference to this document.

8.1.2 Packaging mark

The packaging mark of the product shall comply with the provisions of GB/T 8180.

8.2 Packaging, transportation and storage

The packaging, transportation and storage of the product shall comply with the provisions of GB/T 8180.

8.3 Accompanying documents

Each batch of products shall have accompanying documents. In addition to supplier information, product information, reference to this document, date of manufacture or date of packaging, it shall also include.

a) Quality certificate, including. […]