29.050 导体材料 标准查询与下载

IEC 61788-4:2020 RLV 超导性第4部分:剩余电阻比测量Nb-Ti和Nb3Sn复合超导体的剩余电阻比

Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti and Nb3Sn composite superconductors

IEC 61788-7:2020 RLV 超导性第7部分:电子特性测量微波频率下高温超导体的表面电阻

Superconductivity - Part 7: Electronic characteristic measurements - Surface resistance of high-temperature superconductors at microwave frequencies

ASTM E977-05(2019) 导电材料热电分选标准实践

1.1 This practice covers the procedure for sorting materials using the thermoelectric method, which is based on the Seebeck effect. The procedure relates to the use of directand comparator-type thermoelectric instruments for distinguishing variations in materials which affect the thermoelectric properties of those materials. 1.2 While the practice is most commonly applied to the sorting of metals, it may be applied to other electrically conductive materials. 1.3 Thermoelectric sorting may also be applied to the sorting of materials on the basis of plating thickness, case depth, and hardness. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Practice for Thermoelectric Sorting of Electrically Conductive Materials

ASTM B193-19 电导体材料电阻率的标准测试方法

Standard Test Method for Resistivity of Electrical Conductor Materials

ASTM B888/B888M-19 电连接器或弹簧触点制造用铜合金带材的标准规范

1.1 This specification establishes the requirements for copper alloy strip for use in the manufacture of electrical connectors or spring contacts produced from one of the following Copper Alloy UNS Nos.:2 C14530, C15100, C15500, C17000, C17200, C17410, C17450, C17460, C17500, C17510, C19002, C19010, C19015, C19025, C19210, C19400, C19500, C19700, C23000, C26000, C40810, C40850, C40860, C42200, C42500, C42520, C42600, C50580, C50780, C51000, C51080, C51100, C51180, C51980, C52100, C52180, C52480, C63800, C64725, C65400, C68800, C70250, C70260, C70265, C70310, C70350, C75200, and C76200. 1.2 The requirements for the other copper alloys such as copper-nickel-tin spinodal, UNS C72650, C72700, and C72900, shall be as prescribed in the current edition of Specification B740. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Specification for Copper Alloy Strip for Use in Manufacture of Electrical Connectors or Spring Contacts

YB/T 4746-2019 铸造用等静压石墨

Isostatic graphite for casting

YB/T 4745-2019 电火花加工用等静压石墨

Isostatic graphite for EDM

ASTM B84-07(2019) 精密电阻器用合金线耐温常数的标准试验方法

1.1 This test method covers determination of the change of resistance with temperature of alloy wires used for resistance standards and precision resistors for electrical apparatus. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Temperature-Resistance Constants of Alloy Wires for Precision Resistors

DB23/T 2313-2019 石墨烯材料 比表面积的测定 氮气吸附法

Determination of specific surface area of graphene materials Nitrogen adsorption method

DB23/T 2314-2019 石墨烯材料微量金属元素镍、铁、铬、铜、钠、铝、镁、锌、锰、钙的测定 电感耦合等离子体发射光谱法（ICP-OES）

Determination of trace metal elements nickel, iron, chromium, copper, sodium, aluminum, magnesium, zinc, manganese and calcium in graphene materials by inductively coupled plasma optical emission spectrometry (ICP-OES)

ASTM B738-13(2018) 电导体用细线束绞合和绳绞绞合铜导体的标准规范

1.1 This specification covers bare bunch-stranded and ropelay bunch-stranded conductors made from round copper wires finer than No. 40 AWG with diameters less than 0.0031 in. (.078 mm), either coated or uncoated with tin or silver, for use as electrical conductors. (Explanatory Note 1). 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.2.1 Exceptions—The SI values for density and temperature are to be regarded as standard. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Specification for Fine-Wire Bunch-Stranded and Rope-Lay Bunch-Stranded Copper Conductors for Use as Electrical Conductors

EN IEC 61788-24:2018 超导性 第24部分：临界电流测量 Ag 护套 Bi-2223 超导线在室温下双重弯曲后保留的临界电流

Superconductivity - Part 24: Critical current measurement - Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires

DIN EN 61788-22-1:2018 超导性. 第22-1部分: 超导电子器件. 传感器和探测器的通用规范 (IEC 61788-22-1-2017); 德文版本 EN 61788-22-1-2017

IEC 61788-22-1 describes general items concerning the specifications for superconducting sensors and detectors, which are the basis for specifications given in other parts of this series of standards for various types of sensors and detectors.

Superconductivity - Part 22-1: Superconducting electronic devices - Generic specification for sensors and detectors (IEC 61788-22-1:2017); German version EN 61788-22-1:2017

IEC 61788-23:2018 超导性. 第23部分: 残余电阻比测量. 铌超导体的残余电阻比

This part of IEC 61788 addresses a test method for the determination of the residual resistance ratio (RRR),rRRR, of cavity-grade niobium. This method is intended for high-purity niobium grades with 15 < rRRR < 600. The test method should be valid for specimens with rectangular or round cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a length not less than 10 nor more than 25 times the width or diameter.

Superconductivity - Part 23: Residual resistance ratio measurement - Residual resistance ratio of Nb superconductors

T/CMSA 0004-2018 柔性复合接地体

本标准规定了柔性复合接地体的产品分类、技术要求、试验方法、检验规则、标识、包装、运输和贮存。 本标准适用于电力、通信、气象、石化、交通、广电等系统中各种复杂地形和强腐蚀土壤地区用作接地保护的接地体。

Flexible Composite Grounding Body

ASTM B267-07(2018) 用于绕线电阻器的导线的标准规范

1.1 This specification covers round wire and ribbon with controlled electrical properties for use in wire-wound resistance units and similar applications, but not for use as electrical heating elements. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Specification for Wire for Use In Wire-Wound Resistors

BS EN 61788-22-1:2017 超导性 超导电子设备 传感器和探测器通用规范

Superconductivity. Superconducting electronic devices. Generic specification for sensors and detectors

IEC 61788-22-1:2017 超导电性 - 第22-1部分:超导电子器件 - 传感器和检测器的总规范

Superconductivity - Part 22-1: Superconducting electronic devices - Generic specification for sensors and detectors

YB/T 917-2017 炭素材料 钒含量的测定 3,3-二甲基联萘胺比色法

Determination of vanadium content in carbon materials using 3,3-dimethylbinaphthylamine colorimetric method

YB/T 5292-2017 高炉炭块氧化性试验方法

Test method for oxidizing properties of blast furnace carbon blocks