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Using 6061-T6 aluminum rivets

Using 6061-T6 aluminum rivets

Using 6061-T6 aluminum rivets

(OP)
We have supplied 6061-T6 solid alum rivets (5/8" dia) to our customer (T6 condition at their reqest) and they crack during assembly. Is there any published information regarding riveting this material? I am concerned the T6 condition is too hard.

RE: Using 6061-T6 aluminum rivets

As far as I know high strength rivets are supplied in the "W" condition and kept in low temperatures to avoid natural aging. Then After riveting they are naturally aged. If I am not mistaken in the 6061 they will be naturally aged to T4.

A direct quote for MIL-HDBK-5J: "T6 solution heat-treated and artificially aged. Applies to products which are not cold worked after solution heat-treatment or in which the effect of cold work in flattening or straightening may not be recognized in mechanical property limits."

"T4 solution heat-treated and naturally aged to a  substantially stable condition. Applies to products which are not cold worked after solution heat-treatment, or in which the effect of cold work in flattening or straightening may not be recognized in mechanical property limits."

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