GB/T 15073-1994 Cast titanium and titanium alloy grades and chemical compositions

This standard specifies the grades, codes and chemical composition of cast titanium and titanium alloys. This standard applies to titanium and titanium alloys in graphite processing, graphite tamping, metal and investment castings. GB/T 15073-1994 Grades and chemical composition of cast titanium and titanium alloys GB/T15073-1994 Standard download decompression password: www.bzxz.net

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Designation and chemical composition of cast titanium and titanium alloys Subject content and applicable scope
This standard specifies the designation, code and chemical composition of cast titanium and titanium alloys. GB/T15073--94
This standard is applicable to titanium and titanium alloys of graphite processing type, graphite tamping type, metal type and investment casting type. 2 Reference standards
GB/T4698 Chemical analysis method of titanium and titanium alloys GB8063 Method for expressing the designation of cast nonferrous metals and their alloys GB8170 Rules for rounding off values
3 Designation and code
3.1 The designation of cast titanium and titanium alloys shall be expressed in accordance with the provisions of GB8063. 3.2 The code for cast titanium and titanium alloys consists of ZT plus A, B or C (representing α-type, β-type and α+β-type alloys respectively) and a sequence number, which is the same as the representation method for the same type of deformed titanium alloys. 3.3 The grades and codes for cast titanium and titanium alloys are listed in Table 1. Table 1
Casting titanium and titanium alloys
ZTiA14
ZTiA15Sn2.5
Main components
Approved by the State Administration of Technical Supervision on May 9, 19943.0
Chemical fraction, %
Impurities, not more than
Other elements
Single sum
0.250.100.10/0.03
1 0. 015 /0. 25/0.10/0. 40
0. 300. 150. 10/0. 05
0.0150.350.10/0.40
0.400.15/0.10/0. 05
0.0150.400.100.40
0. 30|0. 15|0. 10/0. 040. 015 /0. 20|0. 10|0.400.500.150.100.050.0150.200.10|0.401994-12-01 Implementation
Casting titanium and titanium alloys
ZTiMo32
ZTiAl6V4
ZTiA16Sn4.5
GB/T 15073--94
Continued Table 1
Chemical composition, %
Main component
Impurities, not more than
Other elements
Single sum
0.300.150.100.050.0150.150.100.400.40|0.150.100.050.0150.250.100.401.5~
0. 30[0. 150. 10|0. 05
0. 20/0. 100. 40
Note: ①) The single content and total amount of other elements in impurities shall only be considered for analysis when there is any objection. ② When there are special requirements for the impurity content, it shall be indicated in the relevant documents after consultation between the supply and demand parties. Chemical composition
4.1 The chemical composition of cast titanium and titanium alloys shall comply with the provisions of Table 1. 4.2 The other elements of impurities in Table 1 refer to the trace elements inherent in the production process of castings, generally including Al, V, Sn, Mo, Cr, Mn, Zr, Ni, Cu, Si, Nb, Y (the alloy elements contained in this grade should be removed). 4.3 The chemical analysis sample is cut from the casting test bar or casting, and it is allowed to be cut from the runner. The chemical analysis sample must be clean, without foreign impurities and without casting surface, etc.
4.4 The chemical composition analysis shall be carried out in accordance with GB4698. The element analysis method not included in GB4698 shall be negotiated by the supply and demand parties. 4.5 The number of significant digits of the reported value of the chemical composition analysis shall be consistent with the number of significant digits of the corresponding limit value in Table 1. The rounding of the analysis value shall be carried out in accordance with GB8170.
4.6 When the purchaser re-tests and analyzes the chemical composition, the allowable deviation of the composition shall comply with the provisions of Table 2. Table 2
Specified chemical composition range, %
30.0~34.0
>0.20~0.25
0. 25 ~ 0. 40
>0. 40~0. 50
Allowable deviation, %
ImpuritiesOther elements
Additional remarks:
This standard is proposed by China Aviation Industry Corporation. GB/T15073—94
Continued Table 2
Specified chemical composition range, %
>0.20~0.25
>0.25～0. 40
This standard is under the jurisdiction of the Standard Measurement and Basic Research Institute of China Nonferrous Metals Industry Corporation. Allowable deviation, %
This standard was drafted by the 621st Institute of China Aviation Industry Corporation. The participating units include the 725th Research Institute of China State Shipbuilding Corporation, Shenyang Foundry Research Institute of the Ministry of Machinery Industry and Baoji Nonferrous Metals Processing Plant of China Nonferrous Metals Industry Corporation. The main drafters of this standard are Lu Panjin, Fan Yuli, Zhang Yansheng, Zhang Jian, Wang Dinghua and Tang Longzhang.
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