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Pre-2022 Etchells Class Rules F.4.1 (Boom extrusion) Materials Reply To: F.4.1 (Boom extrusion) Materials

#4159
Matt
Administrator
Administrator

    Just to add more information in case it comes up… We may not need to go to this level of detail, but maybe someone in the ODTC should know which spec(s) the spar extrusions comply with. Following is the list of Aerospace Material Specifications (AMS) for AA6061 (taken from U.S. DoD MIL-HDBK-5J) and the structural shape(s) to which each spec applies.
    AMS 4025 – Sheet and plate
    AMS 4026 – Sheet and plate
    AMS 4027 – Sheet and plate
    AMS-QQ-A-250/11 – Sheet and plate
    AMS 4115 – Bar and rod, rolled or cold-finished
    AMS 4116 – Bar and rod, cold-finished
    AMS 4117 – Bar and rod, rolled or cold-finished
    AMS-QQ-A-225/8 – Rolled bar, rod, and shapes
    AMS 4150 – Extruded rod, bar, and shapes
    AMS 4160 – Extrusion
    AMS 4161 – Extrusion
    AMS 4172 – Extrusion
    AMS 4173 – Extruded rod, bar, and shapes
    AMS-QQ-A-200/8 – Extruded rod, bar, shapes, and tubing
    AMS-A-22771 – Forging
    AMS 4080 – Tubing, seamless, drawn
    AMS 4082 – Tubing, seamless, drawn
    AMS-WW-T-700/6 – Seamless drawn tubing
    AMS 4127 – Forging
    AMS 4248 – Hand forging
    AMS-QQ-A-367 – Forging