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ABBOTT AEROSPACE INC. PROPRIETARY INFORMATION Subject to restrictions on the cover or first page Author: R. Abbott Document Number: AA-SM-019 Check: Revision Level : A Date: Apr-2010 Page: 1 of 1 Modulus of Rupture of Round Al. Tubing References: [1] Bruhn, page C4.16 [2] MMPDS Metallic Materials Properties Development and Standardization Digitization of curves in Fig. C4.12 in Bruhn: Equation for 7075-T6 & 2014-T6 Curve: Equation for 2024-T3, T4 Curve: Equations for 6061-T6 Curve: 0< x <20 y = -0.185275444457Ln(x) + 1.775690418971 20< x <90 Fig. C4.12 Bending modulus of rupture for aluminum-alloy round tubing (Bruhn). y = 0.000000000006x 6 - 0.000000002166x 5 + 0.000000323608x 4 - 0.000026595863x 3 + + 0.001352050802x 2 - 0.046998517998x + 1.748722859569 y = 0.0000000000247098x 6 - 0.0000000083796270x 5 + 0.0000011477139482x 4 - - 0.0000813481616596x 3 + 0.0031828486188599x 2 - 0.0719964625926549x + 1.731979459900 y = 0.000000000212x 5 - 0.000000046241x 4 + 0.000003045163x 3 - - 0.000017042541x 2 - 0.009189965039x + 1.400000000084 0 10 20 30 40 50 60 70 80 90 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 D/t Fb/Ftu 6061-T6 2014-T6 and 7075-T6 2024-T3, T4

AA SM 019 Bending

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Modulus of RuptureAuthor:R. AbbottTotal Pages:1Check: Report:AA-SM-019Date:Apr-2010Revision:ASection:Section Title:Modulus of Rupture of Round Al. TubingPrefix:0

Author:R. AbbottDocument Number:AA-SM-019Check: Revision Level :A1Date:Apr-2010Page:1 of 11


Abbott Aerospace: Abbott Aerospace:Page title on this line Modulus of Rupture of Round Al. Tubing

1

References:

[1]Bruhn, page C4.16[2]MMPDS Metallic Materials Properties Development and Standardization

Digitization of curves in Fig. C4.12 in Bruhn:

Equation for 7075-T6 & 2014-T6 Curve:y = 0.000000000006x6 - 0.000000002166x5 + 0.000000323608x4 - 0.000026595863x3 + + 0.001352050802x2 - 0.046998517998x + 1.748722859569

Equation for 2024-T3, T4 Curve:y = 0.0000000000247098x6 - 0.0000000083796270x5 + 0.0000011477139482x4 - - 0.0000813481616596x3 + 0.0031828486188599x2 - 0.0719964625926549x + 1.7319794599001

Equations for 6061-T6 Curve:0< x