Some standard content:
GB/T3623—1998
This standard is a revision of the national standard GB3623-83 "Titanium and Titanium Alloy Wire". The main contents of the revision are: 1. Added low-strength industrial pure titanium TAO, low-interstitial TAOELI, TA1ELI, TA2ELI, TA3ELI grades, corrosion-resistant titanium alloys TA9 and TA10, and two-phase titanium alloy TC1; deleted the TA5 alloy grade in the original national standard; 2. The chemical composition of structural wire is specified in accordance with GB/T3620-94 "Titanium and Titanium Alloy Grades and Chemical Composition and Permissible Deviation of Composition". And according to the use characteristics of welding wire, the chemical composition of welding wire is more strictly specified. 3. The mechanical properties of structural wire are specified; 4. This standard is stricter than GB3623-83 in terms of technical requirements. From the date of implementation, this standard will replace GB3623-83 at the same time. This standard is proposed by China Nonferrous Metals Industry Corporation. This standard is under the jurisdiction of the Standard Metrology Institute of China Nonferrous Metals Industry Corporation. This standard was drafted by Baoji Nonferrous Metal Processing Plant. The main drafting unit of this standard: Baoji Nonferrous Metal Processing Plant. The main drafters of this standard: Zhou Mingke, Meng Qinglin, Zhang Yansheng, Li Lin, Yang Lijuan. This standard was first issued on April 16, 1983. 677
1 Scope
National Standard of the People's Republic of China
Titanium and titanium alloy wirebzxz.net
Titanium and titanium alloy wireGB/T3623--1998
Replaces GB362383
This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation and storage of titanium and titanium alloy wire. This standard is applicable to round wire used for making structural parts, fasteners, electrode materials and welding materials. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is released, the versions shown are all valid. All standards are subject to revision. Parties using this standard should explore the feasibility of using the latest versions of the following standards. GB228--87 Metal tensile test method
GB5168--85 Two-phase titanium alloy high and low magnification microstructure inspection method GB8180-87 Packaging, marking, transportation and storage of titanium and titanium alloy processed products GB/T3620.1-94 Titanium and titanium alloy grades and chemical composition GB/T3620.2--94 Titanium and titanium alloy processed products chemical composition and composition tolerance GB/T4698-1996 Sponge titanium, titanium and titanium alloy chemical analysis method 3 Contract content
The ordering contract for the materials listed in this standard shall include the following contents: 3.1 Material name.
3.2 Material grade and use (welding wire or structural wire). 3.3 Material state.
3.4 Other elements.
3.5 Size.
3.6 Requirements for mechanical properties of structural wire. 3.7 Weight.
3.8 Standard number.
4 Requirements
4.1 Classification
4.1.1 Products are divided into two categories according to their use:
Structural wire is mainly used as wire for structural parts and fasteners, and welding wire is mainly used as wire for electrode materials and welding materials.
4.1.2 The brand, state and specification of the product shall comply with the provisions of Table 1. Approved by the State Administration of Quality and Technical Supervision on July 15, 1998678
Implementation on February 1, 1999
TAO, TAOELI.
TAI, TA1EI.I.
TA2, TA2F1.1,
TA3, TA3ELI.
TA4, TA7, TA9
TA10, TC1, TC3
GB/T3623—1998
Table 1 Brand, state and specification of products
Annealed state (M)
T state (Y or R)
1. 6 ~-7. 0
Note: The purpose and supply state of the wire should be specified in the contract. If not specified, the wire will be supplied in the processed state (Y or R). 4.2 Melting method and chemical composition
4.2.1 The ingot used to make the wire should be melted in a vacuum white consumption arc furnace, and the number of melting times shall not be less than two times. 4.2.2 The chemical composition of the structural wire shall comply with the provisions of the corresponding grades in GB/T3620.1; the chemical composition of the welding wire shall comply with the provisions of Table 2.
Table 2 Chemical composition of welding wire
Chemical composition,
Main components
Impurity elements
Not more than
Other elements and their contents shall comply with the provisions of the corresponding grades in GB/T3620.1: Other elements of low interstitial grades include: A1.VS, the single content of which is not more than 0.05%; the total content is not more than 0.2%. Other elements are not tested when the product leaves the factory. Inspection can be carried out when the user requires and indicates in the contract. 679
GB/T3623—-1998
4.2.3 When the user takes samples from the product for retesting the chemical composition, the allowable deviation of the composition shall comply with the provisions of GB/T3620.2. 4.3 Dimensions and allowable deviations of dimensions
4.3.1 The allowable deviation of the diameter of the wire shall comply with the provisions of Table 3. Table 3 Allowable deviation of wire diameter
Allowable deviation
>0. 2~0. 5
>0. 5~～1. 0
Note: Wires of other specifications or allowable deviations can be supplied through negotiation between the supply and demand parties. 4.3.2 The wire is not allowed to have the "\" shape.
4.4 Mechanical properties
>1. 0~-2. 0
>2. 0~~4. 0
4. 0~~7.0
When the user requires and specifies in the contract, the room temperature mechanical properties of the structural wire can be measured in the annealed state (the sample should be heat treated when supplied in the processed state), and should comply with the provisions of Table 4. The properties of structural wires of other grades outside Table 4 can be reported as measured values. Welding wire is not subject to this test. Table 4 Room temperature mechanical properties of structural wires in annealed state Grade
Room temperature mechanical properties not less than
Tensile strength p, MPa
4.5 Macrostructure
Elongation, %
Room temperature mechanical properties not less than
Tensile strength oh, MPa
There should be no shrinkage tail, pores, delamination, metal or non-metal inclusions on the transverse macrostructure of the wire. 4.6 Surface quality
4.6.1 The surface of the wire should be clean, free of oxidation color, and should not have cracks, peeling, thorns, spots and inclusions. Elongation 3,%
4.6.2 The surface of the wire is allowed to have slight local scratches, abrasions, spots and pits that do not exceed the allowable deviation of the wire diameter. 5 Test methods
5.1 Chemical composition arbitration analysis method
The chemical composition arbitration analysis method of the product shall be carried out in accordance with the provisions of GB/T4698. 5.2 Dimension measurement method
The dimensions of the product shall be measured using measuring instruments of corresponding accuracy. 5.3 Mechanical property test method
Room temperature tensile test shall be carried out in accordance with the provisions of GB228. Specimen size regulations For products with a diameter less than 4mm, L. is equal to 50mm; for products with a diameter not less than 4mm, L. is equal to 4do. 5.4 Inspection of macrostructure
The macrostructure inspection of the product shall be carried out in accordance with the provisions of GB5168. 5.5 Inspection of surface quality
The surface quality of the product shall be inspected visually. 6 Inspection rules
6.1 Inspection and acceptance
6.1.1 The products shall be inspected by the supplier's technical supervision department to ensure that the product quality complies with the provisions of this standard, and a quality certificate shall be filled in. 6.1.2 The purchaser shall re-inspect the received products in accordance with the provisions of this standard. If the re-inspection results do not comply with the provisions of this standard, the purchaser shall report to the supplier within 6 months from the date of receipt of the product. Proposed, to be resolved through negotiation between the supply and demand parties. 680
6.2 Batch
GB/T3623—1998
Products shall be submitted for inspection in batches. Each batch shall consist of products of the same brand, smelting furnace number, manufacturing method, state and specification. 6.3 Inspection items
Each batch of products shall be inspected for chemical composition, size, mechanical properties, macro and surface quality. 6.4 Sampling location and number of samples
6.4.1 For hydrogen content analysis, one sample shall be randomly taken from the finished product of each batch. The content of other elements shall be reported based on the analysis results of the original ingot. 6.4.2 For mechanical property test, two rolls (roots) shall be randomly taken from each batch of wire, and one sample shall be taken from each roll (root) according to the test items. 6.4.3 The products shall be inspected for size measurement and surface quality roll by roll (root). 6.4.4 Take two rolls (roots) at random from each batch of wire materials, and take a sample at both ends of each roll (root) for transverse macroscopic inspection. 6.5 Repeated test
In the inspection of chemical composition, mechanical properties, and macrostructure, if the test result of one sample is unqualified, double samples (including the original inspected products) shall be taken from the batch of products for repeated test of the unqualified item. If one sample is still unqualified after repeated test, the batch of products shall be judged as unqualified or the unqualified items shall be inspected roll by roll (root), and the qualified ones shall be re-batch for acceptance. 7 Marking, packaging, transportation, and storage
7.1 Product marking
Labels or signs shall be attached to the inspected products, and the following marks shall be indicated on them: a) Brand, use and specification;
b) Supply status;
c) Melting furnace number:
d) Batch number.
7.2 Packaging, packaging marking, transportation, and storage The packaging, packaging marking, transportation, and storage of products shall comply with the provisions of GB8180. 7.3 Quality Certificate
Each batch of products shall be accompanied by a quality certificate, indicating: a) name and address of the supplier;
b) product name;
c) brand, state, purpose and specification;
d) melting furnace number and batch number;
e) net weight and number of pieces of products;
f) results of various analytical tests and stamp of the technical supervision department;
h) packaging date.
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