GB/T 39950-2021 Alumina ceramic heat radiating element for LED lamp

GB/T 9531.1-1988 GB/T 2828.1-2003 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 5593-1996 Structure ceramic materials used in electronic components GB/T 5593-2015 Structure ceramic materials used in electronic component and device GB/T 5594.5-1985 Test methods for properties of structure ceramic used in electronic components—Test method for volume resistivity GB/T 6062-2002 Geometrical product specifications (GPS)—Surface texture-Profile method—Nominal characteristics of contact(stylus)instruments GB/T 6062-2009 Geometrical Product Specifications (GPS)—Surface texture:Profile method—Nominal characteristic of contact (stylus) instruments GB/T 6569-1986 Testing method for flexural strength of high performance ceramics GB/T 6569-2006 Fine ceramics(advanced ceramics,advanced technical ceramics)—Test method for flexural strength of monolithic ceramics at room temperature GB/T 6900-2006 Chemical analysis of alumina-silica refractories GB/T 6900-2016 Chemical analysis of alumina-silica refractories GB/T 6900.1-1986 Fireclay and high-alumina refractories—Determination of loss content on ignition—Gravimetric method GB/T 6900.2-1986 Fireclay and high-alumina refractories—Determination of silicon dioxide content—Gravimetric-molybdenum blue photometric method GB/T 6900.3-1986 Fireclay and high-alumina refractories—Determination of iron oxide content—o-Phenanthroline photometric method GB/T 6900.4-1986 Fireclay and high-alumina refractories—Determination of aluminium oxide content—EDTA volumetric method GB/T 6900.5-1986 Fireclay and high-alumina refractories—Determination of titanium dioxide content—Hydrogen peroxide photometric method GB/T 6900.6-1986 Fireclay and high-alumina refractories—Determination of calcium oxide content—EDTA volumetric method GB/T 6900.7-1986 Fireclay and high-alumina refractories—Determination of magnesium oxide content—Xylidyl blue Ⅰ-CTAB photometric method GB/T 6900.8-1986 Fireclay and high-alumina refractories—Determination of calcium oxide and magnesium oxide content—Atomic absorption spectrophotometric method GB/T 6900.9-1986 Fireclay and high-alumina refractories—Determination of potassium oxide and sodium oxide content—Atomic absorption spectrophotometric method GB/T 6900.10-1986 Fireclay and high-alumina refractories—Determination of manganese oxide content—Ammonium persulfate photometric method GB/T 6900.11-1986 Fireclay and high-alumina refractories—Determination of phosphorous pentoxide content—Molybdenum blue photometric method GB/T 14619-1993 Alumina ceramic substrates for thick film integrated circuits GB/T 14619-2013 Alumina ceramic substrates for thick film integrated circuits GB/T 22588-2008 Determination of thermal diffusivity or thermal conductivity by the flash method GB/T 25995-2010 Test methods for density and apparent porosity of fine ceramics GB/T 6900-2025 Chemical analysis of alumino-silicate refractories