GB/T 38988-2020Damage-tolerant grade titanium alloy plate (English PDF)

1 Scope

This Standard specifies technical requirements, test methods, inspection rules and marks, packaging, transportation, storage, quality certificate and content of order sheet (or contract) for damage-tolerant grade titanium alloy plate.

This Standard is applicable to damage-tolerant grade titanium alloy plate produced by rolling method.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 228.1-2010, Metallic materials - Tensile testing - Part 1: Method of test at room temperature

GB/T 3620.1, Designation and Composition of Titanium and Titanium Alloys

GB/T 3620.2, Designation and composition of titanium and titanium alloys

GB/T 4161, Metallic materials - Determination of plane-strain fracture toughness

GB/T 4698 (all parts), Sponge titanium, titanium and titanium alloys

GB/T 5168, Microstructure and macrostructure examination for titanium and titanium alloys

GB/T 5193, Method of ultrasonic inspection for wrought titanium and titanium alloy products

GB/T 8180, Wrought titanium and titanium alloy products packing marking transporting and storing

GB/T 23603, Test method of titanium and titanium alloy surface contamination layer

GB/T 23605, Determination of beta transus temperature of titanium alloys 3.11 beta transition temperature Plates shall provide beta transition temperature according to the melting furnace number. The beta transition temperature only provides the actual measured value, not as a basis for judgment.

3 Technical requirements

4 Test methods

4.1 The chemical composition is inspected according to GB/T 4698 (all parts) or YS/T 1262. The arbitration analysis is carried out in accordance with GB/T 4698 (all parts).

4.2 The external dimensions and their allowable deviations are inspected with corresponding precision measuring tools. Thickness measurement shall be carried out within the range of 10mm~100mm from the edge of the plate.

4.3 The tensile properties are inspected according to GB/T 228.1-2010. Select the R4 sample in GB/T 228.1-2010.

4.5 The microstructure is inspected according to GB/T 5168. The magnification is 500 times.

4.6 The macrostructure is inspected according to GB/T 5168.

4.7 Surface contamination shall be inspected according to GB/T 23603. The The following marks (or labels) shall be made on the products that have passed the inspection:

e) reference to this Standard.

6 Marks, packaging, transportation, storage and quality certificate

7 Order sheet (contract) content

The order sheet (or contract) for the products listed in this Standard shall include at least the following:

a) product name;

b) designation;

c) specification; […]