ASTM A600-92a(2004)
(Specification)Standard Specification for Tool Steel High Speed
Standard Specification for Tool Steel High Speed
ABSTRACT
This specification covers seven tungsten-type (types T1, T2, T4, T5, T6, T8, and T15) and nineteen molybdenum-type high-speed steels (types M1, M2, M3, M4, M6, M7, M10, M30, M33, M34, M36, M41, M42, M43, M44, M46, M47, M48, and M62) in the form of annealed, hot-rolled bars, forgings, plate, sheet, or strip, and annealed, cold-finished bars or forgings used primarily in the fabrication of tools. Two intermediate high speed tool steels designated as M50 and M52 are also covered. Unless otherwise specified, material shall be made by an electric melting process. A chemical analysis of each heat of steel shall be made to determine the percentage of the elements specified (including carbon, manganese, phosphorus, sulfur, silicon, chromium, vanadium, tungsten, molybdenum, and cobalt) and these values shall conform to the requirements as to the prescribed chemical composition. Requirements for: (1) heat treatment such as austenitizing, quenching, and tempering, (2) hardness testing (3) macrostructure and macroetch standard for porosity and ingot pattern, and (4) decarburization determination are detailed. The maximum Brinell hardness and minimum Rockwell C hardness for the tool steels are given.
SCOPE
1.1 This specification covers tungsten-type and molybdenum-type high-speed steels available as annealed, hot-rolled bars, forgings, plate, sheet, or strip, and annealed, cold-finished bars or forgings used primarily in the fabrication of tools.
1.2 Seven types of tungsten high-speed tool steels designated T1, T2, etc., seventeen types of molybdenum high-speed tool steels designated M1, M2, etc., and two intermediate high speed steels designated as M50 and M52 are covered. Selection will depend upon design, service conditions, and mechanical properties.
1.3 The term "high-speed steel" is described and its minimum requirements are covered in the Annex.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information only.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A600 – 92a (Reapproved 2004)
Standard Specification for
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Tool Steel High Speed
This standard is issued under the fixed designation A600; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope E59 Practice for Sampling Steel and Iron for Determination
of Chemical Composition
1.1 This specification covers tungsten-type and
2.2 Military Standard:
molybdenum-type high-speed steels available as annealed,
MIL-STD-163 Steel Mill Products, Preparation for Ship-
hot-rolled bars, forgings, plate, sheet, or strip, and annealed,
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ment and Storage
cold-finished bars or forgings used primarily in the fabrication
2.3 Federal Standards:
of tools.
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Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
1.2 Seven types of tungsten high-speed tool steels desig-
Fed. Std. No. 183 Continuous Identification Marking of
nated T1, T2, etc., seventeen types of molybdenum high-speed
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Iron and Steel Products
tool steels designated M1, M2, etc., and two intermediate high
speedsteelsdesignatedasM50andM52arecovered.Selection
3. Classification
will depend upon design, service conditions, and mechanical
3.1 Material in accordance with this specification is classi-
properties.
fied by chemical composition. Types correspond to respective
1.3 The term “high-speed steel” is described and its mini-
AISI designations.
mum requirements are covered in the Annex.
3.1.1 Types T1, T2, T4, T5, T6, T8, and T15 are character-
1.4 The values stated in inch-pound units are to be regarded
ized by a controlled high tungsten content along with other
as the standard. The values given in parentheses are provided
alloying elements.
for information only.
3.1.2 Types M1, M2, M3, M4, M6, M7, M10, M30, M33,
2. Referenced Documents M34, M36, M41, M42, M43, M44, M46, M47, M48, and M62
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are characterized by a controlled high molybdenum content
2.1 ASTM Standards:
along with other alloying elements.
A370 Test Methods and Definitions for Mechanical Testing
3.1.3 Types M2, M3, and M10 are further classified accord-
of Steel Products
ing to carbon range. Type M3 is further classified according to
A388/A388M Practice for Ultrasonic Examination of Steel
vanadium range.
Forgings
3.1.4 Types M50 and M52 are considered intermediate high
A561 Practice for Macroetch Testing of Tool Steel Bars
speed steels in view of their lower total alloy content than the
A700 PracticesforPackaging,Marking,andLoadingMeth-
standard types. These leaner alloy grades normally are limited
ods for Steel Products for Shipment
to less severe service conditions.
E3 Guide for Preparation of Metallographic Specimens
E30 Test Methods for Chemical Analysis of Steel, Cast
4. Ordering Information
Iron, Open-Hearth Iron, and Wrought Iron
4.1 Orders for material under this specification shall include
E45 Test Methods for Determining the Inclusion Content of
the following information, as required to describe adequately
Steel
the desired material:
4.1.1 Name of material (high-speed tool steel),
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4.1.2 Type,
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and RelatedAlloys , and is the direct responsibility of Subcommittee
4.1.3 Shape (sheet, strip, plate, flat bar, round bar, square
A01.29 on Tool Steel.
bar, hexagon bar, octagon, special shapes),
Current edition approved Sept. 1, 2004. Published Jan. 2005. Originally
4.1.4 Dimensions (thickness, width, diameter, length). (For
approved in 1969. Last previous edition A600 – 92a (1999). DOI: 10.1520/A0600-
92AR04. coils, include the minimum inside diameter or inside diameter
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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the ASTM website. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
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A600 – 92a (2004)
range, the maximum outside diameter, and maximum or 6.2 Analysis may be made by the purchaser from finished
minimum coil weight if required. (Minimum coil weights are bars and forgings by machining off the entire cross section and
subject to negotiation.)), drilling parallel to the axis of the bar or forging at any point
4.1.5 Finish (hot rolled, forged, blasted or pickled, cold midway between the c
...
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