ASTM A480 PDF

June 19, 2020 0 Comments

ASTM A is the specification that covers the general requirements for flat- rolled stainless and heat-resisting steel plate, sheet and strip. It does not reference. 1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, product specifications that reference Specification A/. ASTM A/AM Standard Specification for General Requirements for Flat -Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and.

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A number in axtm indicates the year of last reapproval. This standard has been approved for use by agencies of the Department of Defense. In the case of con?

The purchase order requirements shall not take precedence if they, in any way, violate the requirements of the product speci?

Within the text, the SI units are shown in brackets, except that when AM is speci? The values stated in each satm are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the speci?

However, unless the order speci? Current edition approved Dec. Originally approved in Finishes for plate are actually shown in Section Finishes for sheet are actually shown in Section Such requirements may include, but are not limited to, the following: In the case of polished? The use of the gage number is discouraged as being an archaic term of limited usefulness not having general agreement on meaning. The gage number shall not be a basis for rejection. Refer to Section Asfm 1—A asfm ordering description is as follows: This analysis shall be made from a test sample taken during the pouring of the melt, or from the in-process product later in the manufacturing?

Astn is neither practical nor necessary to specify limits for unspeci?

ASTM A480 Plate Thickness & Flatness Tolerances

The producer is permitted to analyze for unspeci? The presence of an unspeci? Such a requirement for an element not listed in the product speci? The purchaser is not permitted to make chemical requirements less stringent. For this requirement, a grade is de?

Such analysis shall be made by any of the commonly accepted methods that will positively identify the material. The allowable variation of a particular element in a single sample for product analysis is permitted to be either above or below the speci? However, percentages must exhibit the same tendencies in all samples; that is, the several determinations of any individual element in a heat shall not vary both above and below the speci?

Material Test Report and Certi? This material test report shall reference the product speci? The material test report shall report the melting 3 process when the purchase order requires either a speci?

If certifying that the material conforms to the requirements for more than one type of steel, the manufacturer may indicate each type of steel on the report, or may issue a separate report for each type of steel.

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ASTM A Plate Thickness & Flatness Tolerances – Rolled Alloys, Inc.

However, the document shall clearly identify the organization submitting the report. Not withstanding the absence of a signature, the organization submitting the document is responsible for its content.

Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the a4880 of the report. NOTE 2—Notwithstanding the absence of a signature, astk organization submitting the report is responsible for the content of the report.

NOTE 3—The industry de? In either case, the test report shall be complete with the full identi? Permitted Variations in Dimensions and Weight 9. The steel shall have no imperfections of a nature or degree, for the type and quality ordered, that will adversely affect the stamping, forming, machining, or fabrication of? An iron free abrasive wheel shall be used for such grinding and shall be operated at a speed ample to ensure that defective areas are cleanly cut out. Finish for Sheet This is a dull, nonre?

Bright Annealed Finish —A smooth, bright, re? Average surface roughness Ra may generally be up to 40 micro-inches. A skilled operator can generally blend this?

Surface roughness measurements differ with different instruments, laboratories, and operators. There may also be overlap in measurements of surface roughness for both No. Average surface roughness Ra may generally be up to 25 micro-inches. It is produced by buffing a? A80, very faint buff of polish lines may still be visible on the? Blending after part assembly may be done with buffing. Appearance will vary depending upon the starting?

Architectural Finishes—Sometimes described as a No. Various production methods may be used to obtain these? When polished on one side only, it is permitted to rough grind the other side in order to obtain the necessary?

Finish for Strip This is a general purpose? Bright Annealed Finish—See Note 4.

TR Finish—See Note 4. Finish for Plates Use of plates in this condition is generally con? Scale impairs corrosion resistance. Edges for Cold-Rolled Strip Heat treatment thermal cycles shall be separate from other thermal processing cycles; for example, in-process thermal cycles are not permitted as a substitute for the separate annealing cycle.

When intergranular corrosion is of concern, the purchaser should specify the corrosion test asttm The manufacturer is permitted, if necessary, satm a lower temperature resolution anneal or a stabilization anneal after a high temperature solution anneal in order to meet corrosion test requirements. Number of Tests If the hardness difference between the two ends of the coil exceeds 5 HRB, or equivalent, or if the material is temper rolled, tensile properties must be determined on both coil ends.

NOTE 7—The term continuously, as applied to heat treatment, is meant to describe a heat-treating operation in which one cut length follows another through the furnace.

ASTM A480 Specification

Interspersement of different melts is permissible if they are of approximately the same nominal thickness and are heat treated in the a4880 operating period and under the same conditions time and temperature. For S, the heat treatment is speci?

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For S, see Note 6. It is permitted to obtain such specimens from specimens selected for mechanical testing. The tension test specimen shall conform to the appropriate sections of Test Methods and De? For the purposes of this speci? Hardness conversion shall be done using the a4480 tables in Test Methods and De? When the material is too thin to allow hardness testing using any of the Rockwell super? In the case of transverse bend test specimens, the axis of bend shall be parallel to the direction of rolling.

It is permitted to round the edges of the test specimen to a radius equal to one half the specimen thickness. For narrow strip, the following widths can be tested: All austenitic chromium-nickel types except the H types are expected to be capable of passing this test. However, it is not necessary to actually run the test unless it is speci?

Note that Practices A requires the test to be performed on sensitized specimens in the low-carbon and stabilized types and on specimens representative of the asshipped condition for other types. In the case of heavier plates of types other than L, LN, Cb, Astn, Cb, L, LN, Ti, L,S, and S, the applicability of this test shall be a matter for negotiation between the seller and the purchaser. However, it is permitted to specify Practice E of Practices A80 for Type H when intergranular corrosion is of concern.

In this case, the purchaser shall inform the seller and agree upon the requirements and these requirements shall be so stated on the purchase order. When intergranular corrosion tests are required, they shall be as agreed upon between the seller and the purchaser. It is permitted to remove the sheared edges to a depth of at least 1?

It is permitted to break the corners of the cross section of the specimen with a? One surface, to be the outside surface in bending, shall be the original surface of the plate; however, surface preparation by light grinding is permitted.

It is permitted to round the edges to a 1? When agreed by the seller and the purchaser, it is permitted to modify the cross section to 1? When intergranular corrosion tests are required, they shall be as agreed upon between the seller and purchaser.

All duplex austenitic-ferritic types that are listed in Test Methods A are expected to be capable of passing these tests.

However, it is not necessary to actually run the tests unless speci? The applicability of these tests to duplex stainless steels not listed in Test Methods A shall be a matter for negotiation between the seller and the purchaser. Retests and Retreatment The material shall be accepted if the results of retests on retreated material are within the speci?