Standards

YS/T 575.20-2007 Replaced

YS/T 575.20-2007 Methods for chemical analysis of bauxite—Part 20:Preparation of pre-dried sample

This section specifies the method for preparing pre-dried samples of bauxite ore.
This section is applicable to the determination of the content of certain components in bauxite ore, which is calculated based on the dry basis.

Publish Date: 2007-11-14

YS/T 575.21-2007 Replaced

YS/T 575.21-2007 Methods for chemical analysis of bauxite—Part 21:Determination of organic carbon content—Titrimetric method

This section specifies the method for determining the organic carbon content in bauxite ore.
This section is applicable to the determination of the organic carbon content in bauxite ore. The measurement range is 0.01% to 1.00%.

Publish Date: 2007-11-14

YS/T 575.22-2007 Replaced

YS/T 575.22-2007 Methods for chemical analysis of bauxite—Part 22:Determination of hydroscopic moisture—Gravimetric method

This section specifies the method for determining the moisture content in the analysis samples of bauxite ore.
This section is applicable to the determination of the moisture content in the analysis samples of bauxite ore. The measurement range is ≤5.0%. It is also used to correct the results of the calcination loss at 1075℃ to the dry basis value.
Note: When considering moisture in other measurements, the preparation of pre-dried samples shall be carried out in accordance with the provisions of YS/T 575.20.

Publish Date: 2007-11-14

YS/T 647-2007 Replaced

YS/T 647-2007 Copper—Zinc—Bismuth—Tellurium alloys rod and bar

This standard specifies the product classification, technical requirements, test methods, inspection rules, and packaging, marking, transportation, and storage of copper-zinc-bismuth-tellurium alloy rods.
This standard applies to round, square (rectangular), and hexagonal easy-to-cut copper alloy rods used in electronics, machinery, and other industries.

Publish Date: 2007-11-14

YS/T 648-2007 Replaced

YS/T 648-2007 Copper-Tellurim alloys rod and bar

This standard specifies the classification, technical requirements, test methods, inspection rules, and packaging, marking, transportation, and storage of copper-tellurium alloy rods.
This standard applies to round, square (rectangular), and hexagonal copper-tellurium alloy rods used in high-performance aviation, aerospace, military, communication, automatic control, electronics, and power industries.

Publish Date: 2007-11-14

YS/T 649-2007 Replaced

YS/T 649-2007 Extruded rod and bar of copper and copper alloys

This standard specifies the requirements, test methods, inspection rules, and marking, packaging, transportation, storage, and contract content for extruded rods made of copper and copper alloys.
This standard applies to round, rectangular (square), and hexagonal extruded rods made of copper and copper alloys for general use.

Publish Date: 2007-11-14

YS/T 650-2007 Replaced

YS/T 650-2007 Seamless copper tubes for medical gases and vacuum

This standard specifies the requirements, test methods, and inspection rules for medical gases and seamless copper tubes used in vacuum applications, as well as their packaging, marking, transportation, and storage.
This standard applies to seamless copper tubes with an outer diameter ranging from 6 mm to 159 mm, which are used for the distribution and delivery of the following medical gases or vacuum applications:
——Oxygen, nitrogen monoxide, nitrogen, helium, carbon dioxide, argon;
——Respiratory gases;
——Special mixtures of the aforementioned gases;
——Gases used in surgical instruments;
——Anesthetic gases and vapors;
——Compressed air.
Tubing that meets this standard can be used for capillary welding, brazing, hard soldering, soft soldering, or mechanical processing into complete tube assemblies.

Publish Date: 2007-11-14

YS/T 653-2007 Replaced

YS/T 653-2007 Sodium thioglycolate used for nonferrous mineral processing

This standard specifies the requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of sodium thioglycolate.
This standard applies to industrial products of sodium thioglycolate obtained by concentrating and refining sulfide amide tailings. This product is mainly used to replace sodium cyanide and sodium hydrosulfide as inhibitors of copper minerals and pyrite in the separation of copper-molybdenum mixed concentrates; it can also be used as a fur depilatory agent.

Publish Date: 2007-11-14

YS/T 654-2007 Replaced

YS/T 654-2007 Titanium powder

This standard specifies the requirements for titanium powder, test methods, inspection rules, and marking, packaging, transportation, storage, and order requirements.
This standard applies to titanium powder produced by the hydrogenation-dehydrogenation method for use in powder metallurgy or as an additive.

Publish Date: 2007-11-14

YS/T 655-2007 Replaced

YS/T 655-2007 Titanium tetrachloride

This standard specifies the requirements, test methods, inspection rules, and marking, packaging, transportation, storage, and order form (or contract) content for titanium tetrachloride. This standard applies to titanium tetrachloride produced using chlorination and refining processes from titanium-rich materials such as rutile and high-titanium slag. This product is suitable for the production of sponge titanium and related chemical products.

Publish Date: 2007-11-14

YS/T 656-2007 Replaced

YS/T 656-2007 Designation and composition of wrought niobium and niobium alloy

This standard specifies the grades and chemical compositions of processed products made from niobium and niobium alloys. This standard applies to all processed products made from niobium and niobium alloys (including cast ingots and semi-finished products).

Publish Date: 2007-11-14

YS/T 657-2007 Replaced

YS/T 657-2007 Potassium tetrachloroplatinate(Ⅱ)

This standard specifies the requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of potassium chloroplatinate. This standard applies to potassium chloroplatinate used in pharmaceuticals, plating, and the preparation of other platinum reagents.

Publish Date: 2007-11-14