Standards

YS/T 3043-2023 Active

YS/T 3043-2023 Determination of gold content in chlorinated gold materials

This document specifies the method for determining the amount of gold in chlorine-containing gold materials.
This document is applicable to the determination of the amount of gold in chlorine-containing gold materials, with a measurement range of 0.30 g/t to 1,500.0 g/t.

Publish Date: 2023-12-29

YS/T 1657.1-2023 Active

YS/T 1657.1-2023 High Sulfur Slag Chemical Analysis Method - Part 1: Determination of Sulfur Content by Pyrolysis-Titration Method

This document is applicable to the determination of sulfur content in high-sulfur slag. The measurement range is 20.00% to 85.00%.

Publish Date: 2023-12-20

YS/T 1656-2023 Active

YS/T 1656-2023 Test method for heat transfer coefficient and resistance characteristics of copper and copper alloy pipes

This document is applicable to the testing of the heat transfer coefficient and resistance characteristics of copper and copper alloy bright-surfaced tubes, internally threaded copper tubes, and finned tubes used in heat exchangers.

Publish Date: 2023-12-20

YS/T 851-2023 Active

YS/T 851-2023 Aluminum melt online degassing and filtration device

This document is applicable to degassing devices and filtration devices used for online purification of aluminum and aluminum alloy melts. This document is not applicable to degassing devices without fixed housings, such as flow troughs and transfer bags.

Publish Date: 2023-12-20

YS/T 447.1-2023 Active

YS/T 447.1-2023 Aluminum and aluminum alloys for grain refining with alloy wire - Part 1: Aluminum-titanium-boron alloy wire

This document is applicable to aluminum-titanium-boron alloy wire used for grain refinement of aluminum and aluminum alloys.

Publish Date: 2023-12-20

YS/T 420-2023 Active

YS/T 420-2023 Aluminum alloy watt's hardness test method

This document is applicable to the hardness measurement of 6XXX aluminum alloy materials with a thickness of not less than 1 mm. The hardness test of aluminum alloy materials of other series can also be referenced to this document.

Publish Date: 2023-12-20

YS/T 1655-2023 Active

YS/T 1655-2023 Chemical vapor deposition of zinc sulfide crystal

This document is applicable to zinc sulfide crystals prepared by chemical vapor deposition (CVD), including standard zinc sulfide and multispectral zinc sulfide, with a transmittance wavelength range of 1 μm to 14 μm.

Publish Date: 2023-12-20

YS/T 1654-2023 Active

YS/T 1654-2023 The method of chemical analysis for the determination of trace impurity element content using glow discharge mass spectrometry for nitrogen-doped gallium chemical analysis

This document is applicable to the determination of the content of impurity elements in gallium nitride.

Publish Date: 2023-12-20

YS/T 1653-2023 Active

YS/T 1653-2023 YS/T 1653-2023 Gallium nitride substrate sheet

This document is applicable to the research and development, production, and testing of gallium nitride substrates for semiconductor optoelectronic devices and electronic devices, as well as other related fields.

Publish Date: 2023-12-20

YS/T 254.8-2023 Active

YS/T 254.8-2023 Method for chemical analysis of beryllium concentrate - Part 8: Determination of beryllium oxide, iron oxide, calcium oxide, and phosphorus content - Inductively coupled plasma atomic emission spectroscopy

This document is applicable to the determination of beryllium oxide, beryl, iron oxide, calcium oxide, and phosphorus content in beryllium concentrate and beryl. The determination ranges are as follows: beryllium oxide: 3.50% to 14.00%; iron oxide: 0.50% to 10.00%; calcium oxide: 0.05% to 4.00%; and phosphorus: 0.010% to 0.500%.

Publish Date: 2023-12-20

YS/T 1652-2023 Active

YS/T 1652-2023 Determination of texture in zirconium and zirconium alloys using electron backscattered diffraction (EBSD) method

This document is applicable to the electron backscatter diffraction analysis of textures in zirconium and zirconium alloys. The texture measurement of other polycrystalline materials can also refer to this document.

Publish Date: 2023-12-20

YS/T 1651-2023 Active

YS/T 1651-2023 The detection method for two-roll cold rolling die of zirconium alloy tube

This document is applicable to the detection of the cross-sectional shape and dimensions of two-roll cold-rolled dies for nuclear-grade zirconium alloy tubes, as well as data preparation for the reverse (inverse) design of the dies. The detection of the cross-sectional shape and dimensions of two-roll cold-rolled dies for other metal tubes can also be carried out with reference to this document.

Publish Date: 2023-12-20