1 Scope
This standard specifies requirements, test methods, inspection rules, marking, packaging, transportation, storage and order (or contract) content of tungsten carbide powder.
This standard is applicable to tungsten carbide powder for producing hard alloy.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative documents referred to applies.
GB/T 3249 Standard Method for Determination of Particle Size of Powders of Refractory Metals and Compounds; Fisher Method
GB/T 4324 (All Parts) - Methods for Chemical Analysis of Tungsten
GB/T 5124 (All Parts) Methods for Analysis of Hard Alloy
GB/T 5314 Powders for Powder Metallurgical Purposes; Sampling
GB/T 13390 Metallic Powder-Determination of the Specific Surface Area - Method of Nitrogen Adsorption
3 Requirements
3.1 Product classification
Tungsten carbide powder is classified into 16 designations according to its average grain size range, expression methods are as follows:
Foreword i
1 Scope
2 Normative References
3 Requirements
4 Test Methods
5 Inspection Rules
6 Marking, Packaging, Transportation and Storage
7 Order (or Contract) Content
