ASTM A575-96(2013)e1
(Specification)Standard Specification for Steel Bars, Carbon, Merchant Quality, M-Grades
Standard Specification for Steel Bars, Carbon, Merchant Quality, M-Grades
SCOPE
1.1 This specification covers hot-wrought merchant quality carbon steel bars produced to a chemical composition. Merchant quality bars are used for structural and similar miscellaneous bar applications involving moderate cold bending, moderate hot forming, punching, and welding as used in the production of noncritical parts. Moderate cold bending involves a generous bend radius with the axis of the bend transverse to the direction of rolling.
1.2 Special quality hot-wrought carbon steel bars are covered in Specification A576.
1.3 Some end uses may require one or more of the available designations shown under Supplementary Requirements.
1.4 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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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´1
Designation:A575 −96 (Reapproved 2013)
Standard Specification for
Steel Bars, Carbon, Merchant Quality, M-Grades
This standard is issued under the fixed designation A575; 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 U.S. Department of Defense.
ε NOTE—Sections 1.4 and 4.1 were editorially corrected in July 2013.
1. Scope 3.1.2 Grade designation or chemical composition (Section 7
and appropriate chemical analysis tables),
1.1 This specification covers hot-wrought merchant quality
3.1.3 Supplementary Requirements or additions, if required,
carbon steel bars produced to a chemical composition. Mer-
3.1.4 Dimensions and quantity, and
chant quality bars are used for structural and similar miscella-
3.1.5 End use and processing.
neous bar applications involving moderate cold bending, mod-
erate hot forming, punching, and welding as used in the
4. Materials and Manufacture
production of noncritical parts. Moderate cold bending in-
4.1 The steel shall be made by the basic-oxygen or electric-
volves a generous bend radius with the axis of the bend
furnace process.
transverse to the direction of rolling.
1.2 Special quality hot-wrought carbon steel bars are cov-
5. Conditions
ered in Specification A576.
5.1 Merchant quality bars are available in rounds, squares,
1.3 Some end uses may require one or more of the available
round cornered squares, hexagons, and bar size shapes under 3
designations shown under Supplementary Requirements. in. (76.2 mm), and in flats less than 40.8 lb/ft (60.7 kg/m).
Hot-wrought merchant quality carbon steel bars are produced
1.4 The values stated in inch-pound units are to be regarded
in cut lengths and coils; the producer should be consulted
as standard. The values given in parentheses are mathematical
regarding sections and sizes available in coils.
conversions to SI units that are provided for information only
and are not considered standard. 5.2 Merchant quality is available within a composition of
0.50 % maximum carbon, 0.60 % maximum manganese,
2. Referenced Documents
nonresulfurized, non-leaded. The phosphorus content is
0.04 %, max, and the sulfur content is 0.05 %, max. Merchant
2.1 ASTM Standards:
quality grades of steel are shown in Table 1 and chemical
A29/A29M SpecificationforGeneralRequirementsforSteel
ranges and limits in Table 2; the grade numbers are designated
Bars, Carbon and Alloy, Hot-Wrought
with the prefix “M.” Merchant quality bars are not produced to
A576 Specification for Steel Bars, Carbon, Hot-Wrought,
any specified silicon content, grain size, or other requirement
Special Quality
that would influence the type of steel.
3. Ordering Information
5.3 Merchant quality bars shall be free of visible pipe;
however, they may contain pronounced chemical segregation.
3.1 Orders under this specification should include the fol-
Internalporosity,surfaceseams,andothersurfaceirregularities
lowing as required to describe adequately the desired material:
may be present in this quality.
3.1.1 ASTM specification number and date of issue,
6. Chemical Composition
6.1 The steel shall conform on heat analysis to the require-
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
ments of chemical composition in Table 1, or chemical
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.15 on Bars.
compositions can be specified that conform to the ranges and
Current edition approved April 1, 2013. Published July 2013. Originally
limits in Table 2. The heat analysis shall be reported to the
approved in 1967. Last previous edition approved in 2007 as A575 – 96 (2007).
purchaser for the elements specified.
DOI: 10.1520/A0575-96R13E01.
For referenced ASTM standards, visit the ASTM website, w
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