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Aluminum Alloy 6061, Bar, Rod, Shapes,

Tube, and Wire, Extruded

A96061

RATIONALE

This document has been reaffirmed to comply with the SAE 5-year Review policy.

NOTICE

This document has been taken directly from Federal Specification QQ-A-200/8F and contains only minor editorial and format changes required to bring it into conformance with the publishing requirements of SAE technical standards.

The original Federal Specification was adopted as an SAE standard under the provisions of the SAE Technical Standards Board (TSB) Rules and Regulations (TSB 001) pertaining to accelerated adoption of government specifications and standards. TSB rules provide for (a) the publication of portions of unrevised government specifications and standards without consensus voting at the SAE Committee level, (b) the use of the existing government specification or standard format, and (c) the exclusion of any qualified product list (QPL) sections.

The complete requirements for procuring aluminum alloy 6061 bar, rod, shapes, tube, and wire extruded described herein shall consist of this document and the latest issue of AMS-QQ-A-200.

AEROSPACE MATERIAL

SPECIFICATION

AMS-QQ-A-200/8

Issued JUL 1997 Reaffirmed

APR 2007

1.SCOPE AND CLASSIFICATION:

1.1Scope:

This specification covers the specific requirements for aluminum alloy 6061 bar, rod, shapes, tube, and wire produced by extrusion.

1.2Classification:

1.2.1Tempers: Bar, rod, shapes, tube, and wire are classified in the following tempers as specified (See

6.2): O,T1, T4, T42, T4510, T4511, T51, T6, T62, T6510, or T6511. Definitions of tempers are

specified in AMS-QQ-A-200.

1.2.2Tubing: Tubing shall be additionally classified as follows:

Type Description

I-Tubing extruded from hollow billets using die and mandrel (See

AMS-QQ-A-200).

II-Tubing extruded from solid billets using a porthole or spider

die or similar tooling (See AMS-QQ-A-200).

2.APPLICABLE DOCUMENTS:

See AMS-QQ-A-200.AMS-QQ-A-200/8SAE AMS-QQ-A-200/8

3.REQUIREMENTS:

3.1Chemical Composition:

The chemical composition shall conform to the requirements specified in Table I.

TABLE I. Chemical Composition 1/

Element

Percent Minimum Maximum

Magnesium0.8 1.2 Silicon0.400.8 Copper0.150.40 Iron--0.7 Chromium0.040.35 Zinc--0.25 Titanium--0.15 Manganese--0.15 Other Elements, each--0.05 Other Elements, total 2/--0.15 Aluminum Remainder

1/Analysis shall routinely be made only for the elements specifically mentioned in Table I. If, however, the presence of other elements is

indicated or suspected in amounts greater than the specified limits, further analysis shall be

made to determine that these elements are not present in excess of the limits specified.

2/The sum of those "Others" metallic elements

0.010 percent or more each, expressed to the

second decimal before determining the sum.

AMS-QQ-A-200/8SAE AMS-QQ-A-200/8

3.2Mechanical Properties:

3.2.1

Mechanical Properties of Material as Supplied: The mechanical properties in the direction of extrusion shall conform to requirements specified in Table II.

3.2.2

Mechanical Properties After Heat Treatment: In addition to conforming to requirements of 3.2.1, materials identified in the following paragraphs shall, after having been heat-treated to other tempers also identified therein, have properties in the extrusion direction conforming to those specified in Table II, as applicable.

3.2.2.1

Material in the O Temper: Material in the O temper, without the subsequent imposition of cold work or forming operations, shall, after proper solution heat treatment and natural aging, develop the properties specified in Table II for the T42 temper.

3.2.2.2

Material in the T1, T4, T42, T4510 and T4511 Tempers: Material in the T1, T4, T42, T4510, and T4511 tempers shall be age-hardenable artificially to the properties specified for T51, T6, T62, T6510, and T6511 tempers, respectively. Such capability shall be demonstrated when specified (See 6.2).

TABLE II. Mechanical Properties

Temper Thickness, (bar and shapes); di-ameter, (rod and wire); wall thickness (tube)

Inches Tensile Strength Minimum ksi Yield Strength at 0.2 percent Offset or at extension indicated

Elongation in

2 inches or 4times D 1/, 4/Minimum percent Minimum ksi Extension under load inch per inch O All

2/2/0.003616T1Up thru 0.625

26.014.00.003416T4, T4510,All 26.016.00.003616and T4511T42 3/All

26.012.00.003216T51Up thru 0.62535.030.00.0050 8T6, T62 3/,Up thru 0.24938.035.00.0055 8T6510 and 0.250 and over

38.0

35.0

0.0055

10T6511

1/D represents specimen diameter.

2/No minimum; maximum tensile and yield strengths are 22.0 ksi and 16.0 ksi, respectively.

3/Material in the T42 or T62 temper is not available from material producers.4/See AMS-QQ-A-200 for elongation requirement exceptions.

3.3Heat Treatment:

Unless otherwise specified in the contract or purchase order for T4, T4510, T4511, T6, T6510, and T6511 material, the producer may use an alternative heat treating procedure in lieu of a furnace heat treatment covered by MIL-H-6088, provided the material conforms to all other requirements of this specification when sampled and tested in accordance with 4.2. The alternative heat treatment shall be performed on the whole of a piece, never on a part only, and shall be performed on the whole of a piece, never a part only, and shall be performed in a manner that will produce the utmost uniformity (See 6.2).

3.4Marking:

In addition to marking required by AMS-QQ-A-200, material in the T51, T6, T6510, and T6511

tempers and, when specified (See 6.2), material in the T1, T4, T4510, and T4511 tempers, shall also be identified by inspection lot number, marked in at least one location on each piece.

4.QUALITY ASSURANCE PROVISIONS:

See AMS-QQ-A-200 and the following:

4.1Heat Treatment:

4.1.1Aging Treatment Before Testing: Test specimens selected from material in the T1, T4, T42, T4510,

and T4511 tempers may be tested within 4 days following solution heat treatment. In the event of test failures caused by insufficient aging, retests shall be performed using material aged for 4 days or longer. Test specimens shall be prepared from the same coupons or location in the lot or lots from which the previously tested specimens were taken.

4.2Additional Sampling and Testing of Material Heat-Treated by Methods Not Covered by MIL-H-6088: 4.2.1Alloy Heat-Treated to the T6, T6510, or T6511 Tempers: When material in the T6, T6510, or T6511

tempers has not been heat-treated by a method covered by MIL-H-6088, internal quality controls shall be applied to establish that product so-treated meets all requirements of this detail

specification and AMS-QQ-A-200. Compliance with the requirements of Table II may be

determined by hardness tests followed by tension tests performed on samples from the two softest extrusions in the inspection lot. The method of hardness testing shall be left to the discretion of the producer.

4.2.2Alloy Heat-Treated to the T4, T4510, or T4511 Tempers: When material in the T4, T4510, or T4511

temper has not been solution heat-treated by a method covered by MIL-H-6088, internal quality controls shall be applied to establish that product so-treated meets all requirements of this detail specification and AMS-QQ-A-200. In addition, specimens taken from extrusions in these tempers shall be artificially aged to determine conformance to 3.2.2.2, as applicable, and be hardness-

tested and tension-tested in accordance with 4.2.1. Any specimen blank selected for an age-

hardenability determination shall be removed from the softest extrusion in the lot undergoing

inspection.AMS-QQ-A-200/8SAE AMS-QQ-A-200/8

4.3Number of Tests After Heat Treatment:

From material in each temper of those specified for heat treatment capability demonstrations in 3.2.2 and the purchase documents (See 6.2), an additional number of specimens equal to that required by AMS-QQ-A-200 shall be taken and tested after heat treatment to each temper specified to determine conformance to 3.2.2.

5.PREPARATION FOR DELIVERY:

See AMS-QQ-A-200.

6.NOTES:

6.1Intended Use:

This alloy is intended for use where good strength and workability are required. The T4510 and T6510 tempers are intended primarily to provide material with low residual stresses and consequent minimum distortion during machining. The T4511 and T6511 tempers are straightened T4510 and T6510 material, respectively, and may have unknown residual stresses and may or may not distort during machining.

6.2Mechanical Properties After Solution Heat Treatment:

Material in the T1, T4511, T51, T6, T6510, and T6511 tempers may not meet the requirements of Table II for T42 temper after re-solution heat treatment because of a tendency for grain growth.

6.3Properties After Heat Treatment:

Mechanical properties and corrosion properties, where applicable, are certified for the temper of material supplied. The producer’s capability demonstration is not evidence that user-treated material conforms to property requirements of a given temper. Frequently, user-heat-treated material may develop a lower level of properties, especially if any cold, warm, or hot work is introduced, prior to solution heat treatment. The user should be held responsible for demonstration that his processing will yield properties meeting requirements.

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6.4Ordering Data:

Purchasers should select the preferred options permitted herein and include the following

information in procurement documents:

Title, number, and date of this specification.

Form, quantity, and temper required (See 1.2.1).

Dimensions required.

Requirements for sizes not specifically covered (See AMS-QQ-A-200).

When lot number marking for material in the T1, T4, T4510, or T4511 temper is required (See 3.4).

Which, if any, heat treatment capabilities shall be demonstrated where such demonstrations are

purchaser’s options (See 3.2.2.2).

Whether heat treatments not covered by MIL-H-6088 are disallowed (See 3.3).

Special end use requirements.

Selection of applicable levels of preservation and packing, whether Level A, Level B, or commercial

(See AMS-QQ-A-200).

Whether Type I tubing is required (See 1.2.2); (where no type is specified, Type I should be applied).

6.5Product produced and marked to the requirements of AMS-QQ-A-200/8 also meets the requirements

of QQ-A-200/8F. Product produced and marked to the requirements of QQ-A-200/8F also meets the requirements of AMS-QQ-A-200/8.

6.6The properties listed in 3.2.1 are exactly the same as QQ-A-200/8, Revision F. These properties

have not been substantiated in accordance with the Manual for Preparation of Aerospace

Specifications.

PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE "D"

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