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GB/T 6524-2003 Metallic powders—Determination of particle size distribution by gravitational sedimentation in a liquid and attenuation measurement 210.0 via email in 1~3 business day valid
YS/T 581.6-2006 Determination of chemical contents and physical properties of aluminium fluoride Part 6: Determination of silica content by the molybdenum blue photometric 75.0 via email in 1~3 business day valid
GB/T 1550-1997 methods for measuring conductivity type of extrinsic semiconducting materials 120.0 via email in 1~3 business day valid
YS/T 273.12-2006 Chemical analysis methods and physical properties of cryolite - Part 12: The atomic absorption spectrophotometric method for the determination of calcium oxide content 75.0 via email in 1~3 business day valid
YS/T 1065.2-2015 Methods for physical performance determination of zeolite―Part 2:Determination of particle size―Centrifugal sedimentation method 105.0 via email in 1~3 business day valid
GB/T 22587-2008 Superconductivity - Matrix to superconductor volume ratio measurement - Copper to superconductor volume ratio of Cu/Nb-Ti composite superconductors 180.0 via email in 1~3 business day valid
GB/T 5225-1985 Metal materials-Quantitative phase analysis-Value Kmethod of X-ray diffraction 105.0 via email in 1~3 business day abolished
GB/T 25897-2010 Superconductivity:Residual resistance ratio measurement of Nb-Ti composite superconductors 330.0 via email in 1~3 business day valid
GB/T 3655-1992 Magnetic sheet and strip-Methods of measurement of magnetic electrical and physical properties 270.0 via email in 1~3 business day superseded
YS/T 581.7-2006 Determination of chemical contents and physical properties of aluminium fluoride Part 7: Determination of iron content by orthophenantholine photometric method 60.0 via email in 1~3 business day valid
GB/T 8753.2-2005 Anodizing of aluminium and aluminium alloys - Assessment of quality of sealed anodic oxide coatings - Part 2: Phosphoric acid/chromic acid test with nitric acid predip 45.0 via email in 1~3 business day superseded
YB/T 5337-2006 The lattice constant determination of metals -- Method of X-ray diffractometer 90.0 via email in 1~3 business day valid
GB/T 1557-1989 The method of determining interstitial oxygen content in silicon by infrared absorption 75.0 via email in 1~3 business day abolished
YS/T 273.9-2006 Chemical analysis methods and physical properties of 90.0 via email in 1~3 business day valid
YS/T 617.4-2007 Determination of chemical compositions and physical properties of aluminum powder magnesium powder and Al-Mg alloy powder Part 4 Determination of insoluble content in hydrochloric acid 90.0 via email in 1~3 business day valid
GB/T 8015.2-1987 Test methods for thickness of anodic oxidation coatings on aluminium and aluminium alloys; Split-beam microscope method via email in business day abolished
YB/T 5360-2006 Metal materials -- Quantitative pole figure preparing method 120.0 via email in 1~3 business day valid
GB 3492-1983 30.0 via email in 1~3 business day superseded
YS/T 617.3-2007 Determination of chemical compositions and physical properties of aluminum powder magnesium powder and Al-Mg alloy powder Part 3 Determination of volatile matter(water) content Drying-degravimetric method 90.0 via email in 1~3 business day valid
GB/T 13789-2008 Methods of measurement of the magnetic properties of magnetic sheet and strip by means of a single sheet tester 300.0 via email in 1~5 business day valid
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