Standards

YS/T 670-2008 Replaced

YS/T 670-2008 Insulation copper tube for connecting in air condition

This standard specifies the requirements for insulated copper pipes used for connecting air conditioners, the test methods, inspection rules, and marking, packaging, transportation, storage, and the contents of purchase orders (or contracts).
This standard is primarily applicable to insulated copper pipes used for connecting outdoor and indoor units of air conditioners.

Publish Date: 2008-03-12

YS/T 673-2008 Replaced

YS/T 673-2008 Deoxidisation cobalt powder

This standard specifies the requirements for reduced cobalt powder, test methods, inspection rules, marking, packaging, transportation, storage, and the content of purchase orders (or contracts). This standard applies to cobalt powders obtained by reduction from cobalt-containing materials such as cobalt oxalate, cobalt carbonate, and cobalt oxide, and is intended for use in industries such as hard alloys, diamond products, rechargeable batteries, and ceramics.

Publish Date: 2008-03-12

YS/T 677-2008 Replaced

YS/T 677-2008 Lithium manganese oxide

This standard specifies the terminology, requirements, test methods, inspection rules, marking, packaging, transportation, storage, and content of purchase orders (or contracts) for lithium manganate. This standard is primarily applicable to lithium manganate, a cathode active material used in lithium-ion batteries.

Publish Date: 2008-03-12

YS/T 679-2008 Replaced

YS/T 679-2008 Test methods for minority carrier diffusion length in extrinsic semiconductors by measurement of steady-state surface photovoltage

1.1 This standard applies to the measurement of the minority carrier diffusion length in homogeneous epitaxial layers with known resistivity, deposited on non-intrinsic single-crystal semiconductor material samples or heavily doped substrates of the same conductivity type. It requires that the thickness of the sample or epitaxial layer be greater than four times the diffusion length.
1.2 This standard was developed for the application of single-crystal silicon samples and can be used to measure the effective diffusion length on other semiconductors, such as gallium arsenide (while adjusting the corresponding light illumination wavelength (energy) range and sample preparation process), and to evaluate the effective diffusion length on polycrystalline silicon samples with grain boundaries perpendicular to the surface. This standard can also be used to measure the width of the clean area of silicon wafers.
1.3 The application limits of the sample's resistivity and lifetime have not yet been determined, but measurements have successfully been made on p- and n-type silicon samples with resistivity ranging from 0.1 to 50 Ω·cm and carrier lifetimes as short as 2 ns. The diffusion length measured by this standard is only conducted at room temperature of 22°C ± 0.5°C, and the lifetime and diffusion length are functions of temperature.

Publish Date: 2008-03-12

YS/T 680-2008 Replaced

YS/T 680-2008 Powder for coating profiles of aluminium alloy for architecture

This standard specifies the requirements, test methods, inspection rules, and marking, packaging, transportation, and storage for powder coatings used on aluminum alloy building profiles. This standard applies to thermosetting powder coatings (hereinafter referred to as powders) used for electrostatic spraying on aluminum alloy building profiles.

Publish Date: 2008-03-12

YS/T 7-2008 Replaced

YS/T 7-2008 Pot tending machine

This standard specifies the requirements, test methods, inspection rules, and marking, packaging, and transportation for aluminum electrolytic multi-functional units (hereinafter referred to as "units").
This standard applies to aluminum electrolytic multi-functional units.

Publish Date: 2008-03-12

YS/T 201-2007 Replaced

YS/T 201-2007 Sheets and bands of precious metals and their alloys

This standard specifies the requirements, test methods, inspection rules, and marking, packaging, transportation, storage, and contracts or purchase orders for precious metals and their alloy sheets and strips.
This standard is applicable to precious metals and their alloy sheets and strips used in the electrical and instrumentation industries.

Publish Date: 2007-11-14

YS/T 39-2007 Replaced

YS/T 39-2007 Tungsten anodes for xenon lamps

This standard specifies the requirements for xenon lamp tungsten anodes, test methods, inspection rules, marking, packaging, transportation, storage, and contract content.
This standard is applicable to xenon lamp tungsten anodes produced by powder metallurgy.

Publish Date: 2007-11-14

YS/T 397-2007 Replaced

YS/T 397-2007 Sponge zirconium

This standard specifies the requirements, test methods, inspection rules, and marking, packaging, transportation, storage, and order form (or contract) requirements for sponge zirconium. This standard applies to sponge zirconium produced by reducing zirconium tetrachloride with magnesium and vacuum distillation.

Publish Date: 2007-11-14

YS/T 573-2007 Replaced

YS/T 573-2007 Tantalum powder

This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage, and order form (or contract) content for tantalum powder. This standard applies to tantalum powder produced by methods such as sodium reduction, mechanical preparation, and electron beam melting, which is used for manufacturing tantalum electrolytic capacitors with different operating voltages and specific capacitances.

Publish Date: 2007-11-14

YS/T 575.14-2007 Replaced

YS/T 575.14-2007 Methods for chemical analysis of bauxite—Part 14:Determination the total content of rare earth oxide—Tribromo-arsenazo photometric method

This part specifies the method for determining the total amount of rare earth oxides in bauxite ore.
This part is applicable to the determination of the total amount of rare earth oxides in bauxite ore, with a determination range of 0.020% to 0.300%.

Publish Date: 2007-11-14

YS/T 575.19-2007 Replaced

YS/T 575.19-2007 Methods for chemical analysis of bauxite—Part 19:Determination of the loss on ignition—Gravimetric method

This section specifies the method for determining the calcination loss in bauxite ore.
This section is applicable to the determination of the calcination loss in bauxite ore, with a measurement range of 10% to 30%.

Publish Date: 2007-11-14