Standards

YB/T 4911-2021 spherical graphite

This document specifies the terms and definitions, grading, designations, technical requirements, test methods, inspection rules, packaging, storage, and transportation of spherical graphite. This document is applicable to spherical graphite used in the anode of lithium-ion batteries.

Publish Date: 2021-05-17

YB/T 4971-2021 soft charcoal

This document specifies the terms and definitions, specifications and technical requirements, test methods, inspection rules, packaging, marking, storage, and transportation of soft carbon. This document is applicable to soft carbon used in the anode materials of lithium-ion batteries.

Publish Date: 2021-05-17

YB/T 4739-2019 Determination of Chromium Iron, Phosphorus, Aluminum, Titanium, Copper, Manganese, and Calcium Content by Inductively Coupled Plasma Atomic Emission Spectroscopy

This standard specifies the method of determining the phosphorus, aluminum, titanium, copper, manganese, and calcium contents in chromium iron using inductively coupled plasma atomic emission spectrometry (ICP-AES). This standard is applicable to the determination of phosphorus, aluminum, titanium, copper, manganese, and calcium contents in chromium iron with a carbon content of less than 4%. The determination of the corresponding elements in silicon chromium alloys can also be carried out by referring to and implementing this standard.

Publish Date: 2019-08-27

YB/T 4511-2017 Direct reduction of iron determination of silicon, manganese, phosphorus, vanadium, titanium, copper, aluminum, arsenic, magnesium, calcium, potassium, and sodium content: Inductively coupled plasma atomic emission spectroscopy

This standard specifies the method for determining the content of silicon, manganese, phosphorus, vanadium, titanium, copper, aluminum, arsenic, magnesium, calcium, potassium, and sodium in directly reduced iron by inductively coupled plasma atomic emission spectrometry. This standard is applicable to the determination of the following elements in directly reduced iron, and the determination ranges of each element are shown in Table 1.

Publish Date: 2017-11-07

YB/T 4510-2017 YB/T 4510-2017 Determination of iron content in direct reduced iron - Potassium dichromate decomposition and ferric chloride titration method

This standard specifies the determination of ferric oxide content by the titration method of potassium dichromate decomposition with ferric chloride. This standard is applicable to the determination of ferric oxide content in directly reduced iron, and the determination range (mass fraction) is 1.00% to 40.00%.

Publish Date: 2017-11-07

YB/T 4509-2017 Direct reduction iron determination of iron metal content using potassium dichromate decomposition and titration with iron(III) chloride

This standard specifies the determination of the metal iron content in iron using the decomposition of ferric chloride and the titration of potassium dichromate. This standard is applicable to the determination of the metal iron content in directly reduced iron, and the determination range (mass fraction) is ≥15.00%.

Publish Date: 2017-11-07

YB/T 151-2017 Concrete steel fiber

This standard specifies the terms and definitions, symbols, classification and designations, order content, dimensions, weights, and allowable deviations of steel fibers for concrete, as well as testing methods, packaging, transportation, and storage. This standard applies to reinforcing concrete and mortar, including shotcrete, flooring, prefabricated products, on-site casting, and repairing concrete with steel fibers (hereinafter referred to as "steel fibers"). For other fiber-reinforced engineering materials, such as stainless steel fibers for reinforcing refractory materials, this standard can also be referenced.

Publish Date: 2017-11-07

YB/T 5194-2015 Refining Asphalt

Publish Date: 2015-07-14

YB/T 4456-2015 Color-coated steel sheets and steel strips for construction purposes

Publish Date: 2015-04-30

YB/T 5034-2015 Crawler type steel with hot-rolled steel belt

Publish Date: 2015-04-30

YB/T 4457-2015 Continuous hot-dip galvanized steel sheets and steel strips for construction

Publish Date: 2015-04-30

YB/T 051-2015 Electrolytic Manganese Metal

Publish Date: 2015-04-30