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ASTM A876-03

(Specification)

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

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

ABSTRACT
This specification covers the detailed requirements for specified grades of flat-rolled, grain-oriented, fully processed low-carbon silicon-iron electrical steels, whose low core loss and high permeability in the direction of rolling have been achieved by appropriate metallurgical processing. These steels are primarily used in transformer cores operating at moderate to high magnetic flux densities at commercial power frequencies. These steels may be acquired in any of four conditions a.) conventional grain-oriented tested at 15 kG (1.5 T), b.) conventional grain-oriented tested at 17 kG (1.7 T), c.) high-permeability grain-oriented tested at 17 kG (1.7 T) and d.) laser-scribed high-permeability grain-oriented tested at 17 kG (1.7 T). These steels can be purchased in a number of combinations of material form and surface type or treatment. This specification explains in detail, the available forms, thicknesses and magnetic performance.
SCOPE
1.1 This specification covers the detailed requirements to which the specified grades of flat-rolled, grain-oriented, fully processed electrical steels shall conform. These steels are used primarily in transformer cores operating at moderate to high magnetic flux densities at commercial power frequencies (50 and 60 Hz).
1.2 These grain-oriented electrical steels are low-carbon, silicon-iron alloys with a silicon content of approximately 3.2 % in which low core loss and high permeability in the direction of rolling have been achieved by appropriate metallurgical processing.
1.3 The electrical-steel grades described in this specification include (1) conventional grain-oriented electrical steel tested at 15 kG (1.5 T) in accordance with Test Method A 343/A 343M, (2) conventional grain-oriented electrical steel tested at 17 kG (1.7 T) in accordance with Test Method A 343/A 343M, (3) high-permeability grain-oriented electrical steel tested at 17 kG (1.7 T) in accordance with Test Method A 343/A 343M, and (4) laser-scribed high-permeability grain-oriented electrical steel tested at 17 kG (1.7 T) in accordance with Test Methods A 804/A 804M.
1.4 The values stated in customary (cgs-emu and inch-pound) units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered standard.

General Information

Status
Historical
Publication Date
30-Sep-2003
ICS
77.140.50 - Flat steel products and semi-products
Technical Committee
A06 - Magnetic Properties
Drafting Committee
A06.02 - Material Specifications
Current Stage
Ref Project

Relations

Replaced By
ASTM A876-09 - Standard Specification for Flat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel, Fully Processed Types
Effective Date
01-May-2009

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ASTM A876-03 - Standard Specification for Flat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel, Fully Processed TypesASTM A876-03 - Standard Specification for Flat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel, Fully Processed Types
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ASTM A876-03 - Standard Specification for Flat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel, Fully Processed Types
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 876 – 03
Standard Specification for
Flat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel,
1
Fully Processed Types
This standard is issued under the fixed designation A876; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope A340 Terminology of Symbols and Definitions Relating to
Magnetic Testing
1.1 This specification covers the detailed requirements to
A343/A343M Test Method for Alternating-Current Mag-
which the specified grades of flat-rolled, grain-oriented, fully
netic Properties of Materials at Power Frequencies Using
processed electrical steels shall conform.These steels are used
Wattmeter-Ammeter-VoltmeterMethodand25-cmEpstein
primarily in transformer cores operating at moderate to high
Test Frame
magnetic flux densities at commercial power frequencies (50
A345 Specification for Flat-Rolled Electrical Steels for
and 60 Hz).
Magnetic Applications
1.2 These grain-oriented electrical steels are low-carbon,
A664 Practice for Identification of Standard Electrical
silicon-iron alloys with a silicon content of approximately
Steel Grades in ASTM Specifications
3.2% in which low core loss and high permeability in the
A700 Practices for Packaging, Marking, and Loading
direction of rolling have been achieved by appropriate metal-
Methods for Steel Products for Domestic Shipment
lurgical processing.
A717/A717M Test Method for Surface Insulation Resis-
1.3 Theelectrical-steelgradesdescribedinthisspecification
tivity of Single-Strip Specimens
include(1)conventionalgrain-orientedelectricalsteeltestedat
A719/A719M TestMethodforLaminationFactorofMag-
15 kG (1.5T) in accordance withTest MethodA343/A343M,
netic Materials
(2) conventional grain-oriented electrical steel tested at 17 kG
A721 TestMethodforDuctilityofOrientedElectricalSteel
(1.7 T) in accordance with Test Method A343/A343M, (3)
A804/A804M Test Methods forAlternating-Current Mag-
high-permeabilitygrain-orientedelectricalsteeltestedat17kG
netic Properties of Materials at Power Frequencies Using
(1.7T)inaccordancewithTestMethodA343/A343M,and(4)
Sheet-Type Test Specimens
laser-scribed high-permeability grain-oriented electrical steel
A937/A937M Test Method for Determining Interlaminar
tested at 17 kG (1.7 T) in accordance with Test Methods
Resistance of Insulating Coatings Using Two Adjacent
A804/A804M.
Test Surfaces
1.4 The values stated in customary (cgs-emu and inch-
A976 Classification of Insulating Coatings by Composi-
pound) units are to be regarded as standard. The values given
tion, Relative Insulating Ability and Application
inparenthesesaremathematicalconversionstoSIunits,which
are provided for information only and are not considered
3. Terminology
standard.
3.1 The terms and symbols used in this specification are
2. Referenced Documents defined in Terminology A340.
2
2.1 ASTM Standards:
4. Classification
A34/A34M Practice for Sampling and Procurement Test-
4.1 The ASTM core-loss type designations, formulated in
ing of Magnetic Materials
accordance with Practice A664, for grain-oriented electrical
steels covered by this specification are listed in Table 1.
1
This specification is under the jurisdiction of ASTM Committee A06 on
Magnetic Properties and is the direct responsibility of Subcommittee A06.02 on
5. Condition
Material Specifications.
5.1 These grain-oriented electrical steels may be purchased
This specification replaces A665, A725, and A843.
Current edition approved Oct. 1, 2003. Published November 2003. Originally in any of the following conditions (which are combinations of
approved in 1987. Last previous edition approved in 1998 as A876/A876M–98.
material form and surface type or treatment) as desired for the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
expected end use.
contactASTM Customer Service at service@astm.org. ForAnnual Book ofASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
A876–03
TABLE 1 Core-Loss Type Designations
Conventional Grain-Oriented Electrical Steel
Tested at 15 kG (1.5 T) in Accordance with Test Method A 343/A 343M
ASTM Aim Maximum Specific Core
B C
Core-Loss Thickness, Loss, W/lb (W/kg)
A
Type in. (mm)
60 Hz 50 Hz
18G041 0.0070 (0.18) 0.41 (0.90) 0.31 (0.68)
23G045 0.0090 (0.23) 0.45 (0.99) 0.34 (0.75)
27G051 0.0106 (0.27) 0.51 (1.12) 0.39 (0.85)
30G058 0.0118 (0.30) 0.58 (1.28) 0.44 (0.97)
35G066 0.0138 (0.35) 0.66 (1.46) 0.50 (1.11)
Conventiona
...

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SCOPE
1.1 This specification covers general procedures for specifying requirements in the procurement and delivery of flat-rolled electrical steels for magnetic applications. When an applicable individual specification does not exist, this specification enables the user to order a suitable material to be supplied under controlled conditions with respect to magnetic quality, sampling, testing, packaging, and so forth, by specifying certain requirements on the purchase order and citing this specification.  
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SCOPE
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This specification covers the standard requirements for flat-rolled, nonoriented semiprocessed electrical steel intended primarily for commercial power frequency applications in magnetic devices. These electrical steels are low carbon, silicon-iron, or silicon-aluminum-iron alloys, and are classified according to core-loss. Unlike the fully processed electrical steels covered by ASTM A 677, the electrical steels in this specification require heat treatment by the user to develop the specified magnetic properties. The steels covered by this specification have a thickness of either 0.0185 in. (0.47 mm) or 0.025 in. (0.64 mm). For each thickness there are four core loss types. The core loss shall be determined following the use of a quality evaluation anneal listed in the specification. The core loss is determined using the Epstein test method at a test frequency of 60 Hz and a maximum flux density of 15 kG (1.5 T). Test methods to determine other required physical and mechanical properties are listed. Other typical magnetic and physical properties are listed for reference.
SCOPE
1.1 This specification covers the detailed requirements to which flat-rolled, nonoriented semiprocessed electrical steel shall conform.  
1.2 This steel is produced to specified maximum core-loss values and is intended primarily for commercial power frequency (50 and 60 Hz) applications in magnetic devices. Desirable core-loss and permeability characteristics are developed through heat treatment by the user.  
1.3 These nonoriented, semiprocessed electrical steels are low carbon, silicon-iron or silicon-aluminum-iron alloys containing up to about 2.5 % silicon and less than 1 % aluminum.  
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ASTM A677-16(Specification)
Standard Specification for Nonoriented Electrical Steel Fully Processed Types

ABSTRACT
This specification covers the standard requirements for flat-rolled nonoriented fully processed electrical steel intended primarily for commercial power frequency applications in magnetic devices. These electrical steels are low-carbon, silicon iron, or silicon-aluminum-iron alloys that may be made by basic-oxygen, electric-furnace, or other steelmaking practice. Desirable core-loss and permeability characteristics are developed during mill processing, so additional heat treatment is usually not required. The grades contained in this specification have thicknesses of 0.014 in. (0. 36 mm), 0.0185 in. (0.47 mm) and 0.0250 in. (0.64 mm). For a given thickness there are from 7 to 9 types based on the maximum value of core loss measured at 60 Hz and 15 kG (1.5 T) using the Epstein test method. Test methods to determine the required magnetic and mechanical properties are specified. Other typical magnetic and physical properties are listed for reference.
SCOPE
1.1 This specification covers the detailed requirements to which flat-rolled nonoriented fully processed electrical steel shall conform.  
1.2 This steel is produced to specified maximum core-loss values and is intended primarily for commercial power frequency (50 and 60 Hz) applications in magnetic devices. Desirable core-loss and permeability characteristics are developed during mill processing, so additional heat treatment by the user is usually not necessary.  
1.3 These nonoriented fully processed electrical steels are low-carbon, silicon-iron, or silicon-aluminum-iron alloys containing up to about 3.5 % silicon and a small amount of aluminum.  
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Standard Specification for Steel, Sheet, Carbon, and High-Strength, Low-Alloy for Pressure Vessels

ABSTRACT
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SCOPE
1.1 This specification2 covers hot-rolled carbon steel sheet for pressure vessels involving fusion welding or brazing. Welding and brazing technique is of fundamental importance and shall be in accordance with commercial practices.  
1.2 The following grades are included in this specification:    
Mechanical Requirements  
Yield Strength, min  
Tensile Strength, min  
Grade  
ksi  
MPa  
ksi  
MPa  
A  
25  
170  
45  
310  
B  
30  
205  
50  
345  
C  
33  
230  
55  
380  
D  
35  
240  
60  
415  
E  
38  
260  
65  
450  
F  
42  
290  
70  
485  
G  
45  
310  
75  
515  
H  
45  
310  
75  
515  
1.3 Hot-rolled carbon steel sheet is generally furnished in cut lengths and to decimal thickness only. Coils may be furnished, provided tension test specimens are taken to represent the middle of the slab as required by 6.1.3. The purchaser should recognize this may require cutting the coils to obtain test samples and results in half-size coils. The sheet is furnished to the following size limits:    
Width, in. [mm]    
Thickness, in. [mm]  
Over 12 [Over 300]    
0.270 to 0.230 [7.0 to 6.0]  
sheet (coils only)  
Under 0.230 to 0.057 [6.0 to 1.5]  
sheet  
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.  
1.5 Tolerances are found in General Requirements Specifications A568/A568M and A635/A635M. The appropriate General Requirements specification is applied based on the thickness and width of the product ordered.  
1.6 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.

  • Technical specification
    4 pages
    English language
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  • Technical specification
    4 pages
    English language
    sale 15% off