GB/T 38975-2020Tantalum and tantalum alloy powder for additive manufacturing (English PDF)
增材制造用钽及钽合金粉
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
July 21, 2020
Implementation date
June 1, 2021
Scope
GB/T 38975-2020 is the English-translated version of 增材制造用钽及钽合金粉.
GB/T 38975-2020 is the Chinese standard "Tantalum and tantalum alloy powder for additive manufacturing". Its scope clause reads: This standard specifies the technical requirements, test methods, inspection rules and signs, packaging, transportation, storage, and storage of tantalum and tantalum alloy powder for additive manufacturing.
The content of the quality certificate, purchase order (or contract). This standard applies to additives prepared by plasma rotating electrode method, plasma atomization method, plasma spheroidization method, hydrogenation dehydrogenation method and other processes Tantalum and tantalum alloy powder for manufacturing. Its clauses include technical requirements.
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Document preview — GB/T 38975-2020
National Standard of the People's Republic of China
- ICS
- 77.160
- Classification
- H 71
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Technical requirements
- 3.1 Chemical composition
- 3.2 Granularity
1 Scope
This standard specifies the technical requirements, test methods, inspection rules and signs, packaging, transportation, storage, and storage of tantalum and tantalum alloy powder for additive manufacturing.
The content of the quality certificate, purchase order (or contract).
This standard applies to additives prepared by plasma rotating electrode method, plasma atomization method, plasma spheroidization method, hydrogenation dehydrogenation method and other processes
Tantalum and tantalum alloy powder for manufacturing.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 1479 (all parts) Determination of bulk density of metal powder
GB/T 1480 Metal powder dry sieving method for determination of particle size
GB/T 1482 Standard funnel method for determination of fluidity of metal powder (Hall flow meter)
GB/T 5162 Determination of Tap Density of Metal Powder
GB/T 5314 Powder sampling method for powder metallurgy
GB/T 15076 (all parts) Chemical analysis methods for tantalum and niobium
GB/T 19077 Particle size analysis laser diffraction method
YS/T 1297 Determination of sphericity of titanium and titanium alloy powder
3 Technical requirements
3.1 Chemical composition
The products are divided into three grades. Ta1, Ta2, TaNb3 according to their chemical composition, and their chemical composition should meet the requirements of Table 1.The buyer has special requirements
The time of request shall be determined through negotiation between the supplier and the buyer.
Table 1 Chemical composition
Grade
Chemical composition (mass fraction)/%
Ta Nb
Fe
Ti
Mo
Si
Ni
Ta1 margin <=0.050 0.010 0.010 0.0030 0.030 0.010 0.005 0.010 0.010 0.005 0.010
Ta2 margin <=0.100 0.050 0.030 0.0050 0.150 0.030 0.010 0.040 0.020 0.030 0.010
TaNb3 margin 1.5~3.5 0.020 0.025 0.0050 0.030 0.030 0.005 0.040 0.030 0.030 0.005
3.2 Granularity
The products are divided into three categories according to their uses, and their particle size should meet the requirements of Table 2.When the buyer has special requirements, it shall be determined through negotiation between the supplier and the buyer.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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