ASTM's electrical and magnetic conductor standards are instrumental in specifying, evaluating, and testing the electrical, magnetic, and physical properties of conducting materials used primarily in electrical and magnetic devices and related equipments. These properties include direct- and alternating-current magnetic properties, magnetic permeability, magnetic shielding efficiency, electrical resistivity, surface insulation resistivity, saturation magnetization and induction, interlaminar resistance, other physical properties. These electrical and magnetic conductor standards allow manufacturers, particularly those in the semiconductor industry, to examine and assess such materials and equipments to ensure their qualification for safe use.

Electrical Standards and Magnetic Conductor Standards

ASTM's electrical and magnetic conductor standards are instrumental in specifying, evaluating, and testing the electrical, magnetic, and physical properties of conducting materials used primarily in electrical and magnetic devices and related equipments. These properties include direct- and alternating-current magnetic properties, magnetic permeability, magnetic shielding efficiency, electrical resistivity, surface insulation resistivity, saturation magnetization and induction, interlaminar resistance, other physical properties. These electrical and magnetic conductor standards allow manufacturers, particularly those in the semiconductor industry, to examine and assess such materials and equipments to ensure their qualification for safe use.

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Bi-Metallic Conductors

B502/B502M-19 Standard Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors

B1010/B1010M-19 Standard Specification for Copper-Clad Steel Electrical Conductor for Tracer Wire Applications

B1005-17 Standard Specification for Copper-Clad Aluminum Bar for Electrical Purposes (Bus Bar)

B229-12(2017) Standard Specification for Concentric-Lay-Stranded Copper and Copper-Clad Steel Composite Conductors

B520-12(2017) Standard Specification for Tin-Coated, Copper-Clad Steel Wire for Electronic Application

B559-12(2017) Standard Specification for Nickel-Coated, Copper-Clad Steel Wire for Electronic Application

B416-98(2018) Standard Specification for Concentric-Lay-Stranded Aluminum-Clad Steel Conductors

B869-07(2018) Standard Specification for Copper-Clad Steel Electrical Conductor for CATV Drop Wire

B910/B910M-07(2018) Standard Specification for Annealed Copper-Clad Steel Wire

B227-15(2019) Standard Specification for Hard-Drawn Copper-Clad Steel Wire

B501-10(2019) Standard Specification for Silver-Coated, Copper-Clad Steel Wire for Electronic Application

B228-11a(2021) Standard Specification for Concentric-Lay-Stranded Copper-Clad Steel Conductors

B415-16(2021) Standard Specification for Hard-Drawn Aluminum-Clad Steel Wire

B566-04a(2021) Standard Specification for Copper-Clad Aluminum Wire

B452-22 Standard Specification for Copper-Clad Steel Wire for Electronic Application

Conductors of Copper and Copper Alloys

B286-20 Standard Specification for Copper Conductors for Use in Hookup Wire for Electronic Equipment

B355-11(2016) Standard Specification for Nickel-Coated Soft or Annealed Copper Wire

B173-17 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Concentric-Stranded Members, for Electrical Conductors

B172-17 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members, for Electrical Conductors

B174-17 Standard Specification for Bunch-Stranded Copper Conductors for Electrical Conductors

B9-76(2017)e1 Standard Specification for Bronze Trolley Wire

B8-11(2017) Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft

B116-95(2017) Standard Specification for Figure-9 Deep-Grooved and Figure-8 Copper Trolley Wire for Industrial Haulage

B47-95a(2017) Standard Specification for Copper Trolley Wire

B470-02(2017) Standard Specification for Bonded Copper Conductors for Use in Hookup Wires for Electronic Equipment

B298-12(2017) Standard Specification for Silver-Coated Soft or Annealed Copper Wire

B784-01(2017)e1 Standard Specification for Modified Concentric-Lay-Stranded Copper Conductors for Use in Insulated Electrical Cables

B624-07(2017) Standard Specification for High-Strength, High-Conductivity Copper-Alloy Wire for Electronic Application

B3-13(2018) Standard Specification for Soft or Annealed Copper Wire

B1-13(2018) Standard Specification for Hard-Drawn Copper Wire

B2-13(2018) Standard Specification for Medium-Hard-Drawn Copper Wire

B902/B902M-13(2018) Standard Specification for Compressed Round Stranded Copper Conductors, Hard, Medium-Hard, or Soft Using Single Input Wire Construction

B738-13(2018) Standard Specification for Fine-Wire Bunch-Stranded and Rope-Lay Bunch-Stranded Copper Conductors for Use as Electrical Conductors

B965-09(2018) Standard Specification for High Performance Tin-Coated Annealed Copper Wire Intended for Electrical and Electronic Application for Solderability

B835-14(2020) Standard Specification for Compact Round Stranded Copper Conductors Using Single Input Wire Construction

B787/B787M-04(2020) Standard Specification for 19 Wire Combination Unilay-Stranded Copper Conductors for Subsequent Insulation

B33-10(2020)e1 Standard Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical Purposes

B972-10(2020)e1 Standard Specification for Nickel-Coated Braid and Ribbon Flat Copper Wire Intended for use in Electronic Application

B971-10(2020)e1 Standard Specification for Silver-Coated Braid and Ribbon Flat Copper Wire intended for use in Electronic Application

B973-10(2020)e1 Standard Specification for Tin-Coated Braid and Ribbon Flat Copper Wire intended for use in Electronic Application

B189-05(2021) Standard Specification for Lead-Coated and Lead-Alloy-Coated Soft Copper Wire for Electrical Purposes

B226-11(2021) Standard Specification for Cored, Annular, Concentric-Lay-Stranded Copper Conductors

B48-00(2021)e1 Standard Specification for Soft Rectangular and Square Bare Copper Wire for Electrical Conductors

B246-15(2021) Standard Specification for Tinned Hard-Drawn and Medium-Hard-Drawn Copper Wire for Electrical Purposes

B496-16(2021) Standard Specification for Compact Round Concentric-Lay-Stranded Copper Conductors

Conductors of Ferrous Metals

B803/B803M-19 Standard Specification for High-Strength Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors

B957/B957M-19 Standard Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Overhead Electrical Conductors

B958/B958M-19 Standard Specification for Extra-High-Strength and Ultra-High-Strength Class A Zinc–5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors

B498/B498M-19 Standard Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors

B606/B606M-19 Standard Specification for High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Aluminum and Aluminum-Alloy Conductors, Steel Reinforced

B802/B802M-19 Standard Specification for Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors, Steel Reinforced (ACSR)

B341/B341M-02 Standard Specification for Aluminum-Coated (Aluminized) Steel Core Wire for Aluminum Conductors, Steel Reinforced (ACSR/AZ) (Withdrawn 2007)

B500/B500M-22 Standard Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead Electrical Conductors

Conductors of Light Metals

B397-85(1999) Standard Specification for Concentric-Lay-Stranded Aluminum-Alloy 5005-H19 Conductors (Withdrawn 2003)

B396-00 Standard Specification for Aluminum-Alloy 5005-H19 Wire for Electrical Purposes (Withdrawn 2004)

B987/B987M-20 Standard Specification for Carbon Fiber Thermoset Polymer Matrix Composite Core (CFC) for use in Overhead Electrical Conductors

B941-16 Standard Specification for Heat Resistant Aluminum-Zirconium Alloy Wire for Electrical Purposes

B1006-17 Standard Specification for Electrical Overhead Conductor Code Word Names

B232/B232M-17 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR)

B524/B524M-18 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum-Alloy Reinforced (ACAR, 1350/6201)

B779-18 Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Steel-Reinforced (ACSR/TW)

B711-18 Standard Specification for Concentric-Lay-Stranded Aluminum-Alloy Conductors, Steel Reinforced (AACSR) (6201)

B549-18 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum-Clad Steel Reinforced for Use in Overhead Electrical Conductors

B857-18 Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)

B856-18 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported (ACSS)

B801-18 Standard Specification for Concentric-Lay-Stranded Conductors of 8000 Series Aluminum Alloy for Subsequent Covering or Insulation

B701/B701M-13(2018) Standard Specification for Concentric-Lay-Stranded Self-Damping Aluminum Conductors, Steel Reinforced (ACSR/SD)

B786/B786M-08(2018) Standard Specification for 19 Wire Combination Unilay-Stranded Aluminum Conductors for Subsequent Insulation

B400/B400M-19 Standard Specification for Compact Round Concentric-Lay-Stranded Aluminum 1350 Conductors

B778-19 Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors (AAC/TW)

B231/B231M-16(2021) Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors

B230/B230M-07(2021) Standard Specification for Aluminum 1350–H19 Wire for Electrical Purposes

B233-97(2021) Standard Specification for Aluminum 1350 Drawing Stock for Electrical Purposes

B324-01(2021) Standard Specification for Aluminum Rectangular and Square Wire for Electrical Purposes

B401-12(2021) Standard Specification for Compact Round Concentric-Lay-Stranded Aluminum Conductors, Steel-Reinforced (ACSR/COMP)

B609/B609M-12(2021) Standard Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes

B978/B978M-21 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum Matrix Composite Reinforced (ACAMCR), Formerly ACCR

B976-21 Standard Specification for Fiber Reinforced Aluminum Matrix Composite (AMC) Core Wire for Aluminum Conductors Aluminum Matrix Composite Reinforced (ACAMCR) (formerly known as ACCR)

B398/B398M-15(2021) Standard Specification for Aluminum-Alloy 6201-T81 and 6201-T83 Wire for Electrical Purposes

B836-00(2021) Standard Specification for Compact Round Stranded Aluminum Conductors Using Single Input Wire Construction

B901-04(2021) Standard Specification for Compressed Round Stranded Aluminum Conductors Using Single Input Wire Construction

B800-05(2021) Standard Specification for 8000 Series Aluminum Alloy Wire for Electrical Purposes—Annealed and Intermediate Tempers

B399/B399M-04(2021) Standard Specification for Concentric-Lay-Stranded Aluminum-Alloy 6201-T81 Conductors

B531-90(1998)e1 Standard Specification for Aluminum-Alloy 5005 Drawing Stock for Electrical Purposes (Withdrawn 2003)

B889-98 Standard Specification for Solid Hard-Drawn Aluminum Wire for Electrical Purposes (Withdrawn 2003)

B232M-97 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated Steel-Reinforced (ACSR) [Metric] (Withdrawn 1999)

B399M-97 Standard Specification for Concentric-Lay-Stranded Aluminum-Alloy 6201-T81 Conductors [Metric] (Withdrawn 1999)

B609M-97 Standard Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes [Metric] (Withdrawn 1999)

B398M-97 Standard Specification for Aluminum-Alloy 6201-T81 Wire for Electrical Purposes [Metric] (Withdrawn 1999)

B524M-97 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum-Alloy Reinforced (ACAR, 1350/6201) [Metric] (Withdrawn 1999)

B911/B911M-22 Standard Specification for ACSR Twisted Pair Conductor (ACSR/TP)

Editorial and Records

B354-19 Standard Terminology Relating to Uninsulated Metallic Electrical Conductors

Material Specifications

A801-21 Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys (UNS R30005 and K92650)

A753-21 Standard Specification for Wrought Nickel-Iron Soft Magnetic Alloys (UNS K94490, K94840, N14076, N14080)

A839-15 Standard Specification for Iron-Phosphorus Powder Metallurgy Parts for Soft Magnetic Applications

A811-15 Standard Specification for Soft Magnetic Iron Parts Fabricated by Powder Metallurgy Techniques

A683-16 Standard Specification for Nonoriented Electrical Steel, Semiprocessed Types

A677-16 Standard Specification for Nonoriented Electrical Steel Fully Processed Types

A1101-16 Standard Specification for Sintered and Fully Dense Neodymium Iron Boron (NdFeB) Permanent Magnets

A1054-16 Standard Specification for Sintered Ferrite Permanent Magnets

A848-17 Standard Specification for Low-Carbon Magnetic Iron

A876-17e1 Standard Specification for Flat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel, Fully Processed Types

A976-18 Standard Classification of Insulating Coatings for Electrical Steels by Composition, Relative Insulating Ability and Application

A726-18 Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types

A838-18 Standard Specification for Free-Machining Ferritic Stainless Soft Magnetic Alloy Bar for Relay Applications

A1009-18 Standard Specification for Soft Magnetic MnZn Ferrite Core Materials for Transformer and Inductor Applications

A345-19 Standard Specification for Flat-Rolled Electrical Steels for Magnetic Applications

A867-19 Standard Specification for Iron-Silicon Relay Steels

A1102-19 Standard Specification for Sintered Samarium Cobalt (SmCo) Permanent Magnets

A840/A840M-00(2006) Standard Specification for Fully Processed Magnetic Lamination Steel (Withdrawn 2011)

A904-20 Standard Specification for 50 Nickel-50 Iron Powder Metallurgy Soft Magnetic Parts

A901-19 Standard Specification for Amorphous Magnetic Core Alloys, Semi-Processed Types

A1086-20 Standard Specification for Thin-Gauge Nonoriented Electrical Steel Fully Processed Types

A876M-92 Standard Specification for Flat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel, Fully Processed Types [Metric] (Withdrawn 1998)

A664-15(2022) Standard Practice for Identification of Standard Electrical Steel Grades in ASTM Specifications

A1070-16(2022) Standard Specification for Cast and Sintered Alnico Permanent Magnets

Methods of Test and Sampling Procedure

B193-20 Standard Test Method for Resistivity of Electrical Conductor Materials

B682-01(2016) Standard Specification for Standard Metric Sizes of Electrical Conductors

B979-12(2018) Standard Specification for Non-Specular (NS) Surface Finish on Overhead Aluminum Electrical Conductors

B258-18 Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors

B830-18 Standard Specification for Uniform Test Methods and Frequency

B1008-18 Standard Test Method for Stress-Strain Testing for Overhead Electrical Conductors

B279-13(2019) Standard Test Method for Stiffness of Bare Soft Square and Rectangular Copper and Aluminum Wire for Magnet Wire Fabrication

B961-13(2019) Standard Specification for Silver Coated Copper and Copper Alloy Stranded Conductors for Electronic Space Application

B263/B263M-14(2020) Standard Test Method for Determination of Cross-Sectional Area of Stranded Conductors

B986-13(2019) Standard Test Method for Determination of Tensile Strength by Mass Method for Stranded Conductors Intended for use in Electronic Application

Terminology and Definitions

A340-22 Standard Terminology of Symbols and Definitions Relating to Magnetic Testing

Test Methods

A883/A883M-01 Standard Test Method for Ferrimagnetic Resonance Linewidth and Gyromagnetic Ratio of Nonmetallic Magnetic Materials (Withdrawn 2006)

A348/A348M-05(2021) Standard Test Method for Alternating Current Magnetic Properties of Materials Using the Wattmeter-Ammeter-Voltmeter Method, 100 to 10 000 Hz and 25-cm Epstein Frame

A721/A721M-02(2021) Standard Test Method for Ductility of Oriented Electrical Steel

A927/A927M-18 Standard Test Method for Alternating-Current Magnetic Properties of Toroidal Core Specimens Using the Voltmeter-Ammeter-Wattmeter Method

A720/A720M-02(2021) Standard Test Method for Ductility of Nonoriented Electrical Steel

A596/A596M-21 Standard Test Method for Direct-Current Magnetic Properties of Materials Using the Point by Point (Ballistic) Method and Ring Specimens

A342/A342M-21 Standard Test Methods for Permeability of Weakly Magnetic Materials

A598/A598M-02(2015) Standard Test Method for Magnetic Properties of Magnetic Amplifier Cores

A893/A893M-03(2015) Standard Test Method for Complex Dielectric Constant of Nonmetallic Magnetic Materials at Microwave Frequencies

A1071/A1071M-11(2015) Standard Test Method for Evaluating Hygrothermal Corrosion Resistance of Permanent Magnet Alloys

A772/A772M-00(2016) Standard Test Method for AC Magnetic Permeability of Materials Using Sinusoidal Current

A341/A341M-16 Standard Test Method for Direct Current Magnetic Properties of Soft Magnetic Materials Using D-C Permeameters and the Point by Point (Ballistic) Test Methods

A773/A773M-21 Standard Test Method for Direct Current Magnetic Properties of Low Coercivity Magnetic Materials Using Hysteresigraphs

A971/A971M-17 Standard Test Method for Measuring Edge Taper and Crown of Flat-Rolled Electrical Steel Coils

A717/A717M-12(2018) Standard Test Method for Surface Insulation Resistivity of Single-Strip Specimens

A900/A900M-01(2018) Standard Test Method for Lamination Factor of Amorphous Magnetic Strip

A697/A697M-13(2018) Standard Test Method for Alternating Current Magnetic Properties of Laminated Core Specimen Using Voltmeter-Ammeter-Wattmeter Methods

A343/A343M-14(2019) Standard Test Method for Alternating-Current Magnetic Properties of Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method and 25-cm Epstein Test Frame

A937/A937M-12(2019) Standard Test Method for Determining Interlaminar Resistance of Insulating Coatings Using Two Adjacent Test Surfaces

A912/A912M-11(2019) Standard Test Method for Alternating-Current Magnetic Properties of Amorphous Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method with Toroidal Specimens

A932/A932M-01(2019) Standard Test Method for Alternating-Current Magnetic Properties of Amorphous Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method with Sheet Specimens

A719/A719M-14(2019) Standard Test Method for Lamination Factor of Magnetic Materials

A1013-00(2020) Standard Test Method for High-Frequency (10 kHz-1 MHz) Core Loss of Soft Magnetic Core Components at Controlled Temperatures Using the Voltmeter-Ammeter-Wattmeter Method

A889/A889M-14(2020) Standard Test Method for Alternating-Current Magnetic Properties of Materials at Low Magnetic Flux Density Using the Voltmeter-Ammeter-Wattmeter-Varmeter Method and 25-cm Epstein Frame

A977/A977M-07(2020) Standard Test Method for Magnetic Properties of High-Coercivity Permanent Magnet Materials Using Hysteresigraphs

A1036-04(2020) Standard Guide for Measuring Power Frequency Magnetic Properties of Flat-Rolled Electrical Steels Using Small Single Sheet Testers

A894/A894M-00(2011)e1 Standard Test Method for Saturation Magnetization or Induction of Nonmetallic Magnetic Materials (Withdrawn 2017)

A712-14 Standard Test Method for Electrical Resistivity of Soft Magnetic Alloys

A698/A698M-20 Standard Test Method for Magnetic Shield Efficiency in Attenuating Alternating Magnetic Fields

A34/A34M-06(2021) Standard Practice for Sampling and Procurement Testing of Magnetic Materials

A804/A804M-04(2021) Standard Test Methods for Alternating-Current Magnetic Properties of Materials at Power Frequencies Using Sheet-Type Test Specimens