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1 ScopeThis standard specifies the requirements for the tensile testing of metallic materials at ambient temperature foraerospace applications.It shall be applied when referred to in the EN technical specification or material standard unless otherwisespecified on the drawing, order or inspection schedule.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) applies.EN ISO 7500-1, Metallic materials – Verification of static uniaxial testing machines – Part 1: Tension/compression testing machines – Verification and calibration of the force-measuring system.EN ISO 9513, Metallic materials – Calibration of extensometers used in uniaxial testing.EN 4258, Aerospace series – Metallic materials – General organization of standardization – Links betweentypes of EN standards and their use.EN 4259, Aerospace series – Metallic materials – Definition of general terms. 1)ASTM E-1012, Standard practice for verification of specimen alignment under tensile loading. 2)3 Terms, definitions and symbolsFor the purposes of this standard, the terms, definitions and symbols given in EN 4259 and the following givenin Table 1 apply.1) Published as AECMA Prestandard at the date of publication of this standard.2) This standard is published by: American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive,West Conshohocken, PA 19428-2959, USA.

4 Health and safetyResources, test pieces, test samples, test materials, test equipment and test procedures shall comply with thecurrent health and safety regulations/laws of the countries where the test is to be carried out.Where materials and/or reagents that may be hazardous to health are specified, appropriate precautions inconformity with local regulations and/or laws shall be taken.5 PrincipleThe test involves straining a test piece by a tensile force at ambient temperature to fracture for the purpose ofdetermining one or more of, Young’s modulus of elasticity, proof stress, tensile strength, elongation, reductionof area.6 Testing requirements6.1 Resources6.1.1 Equipment/plant6.1.1.1 Testing machineTesting machine accuracy shall be verified at intervals not exceeding 12 months in accordance withEN ISO 7500-1 and shall be certified to class 1 or better.Its design shall permit automatic loading alignment. The loading system alignment shall be checked at leastannually with a strain-gauged test piece. The difference between the recorded maximum and minimum strainsshall not exceed 10 % of the mean strain at an appropriate verification force relative to the forces expectedduring a subsequent series of tests. Reference may be made to ASTM E1012 for a verification method.It may be computer controlled and capable of automatic calculation and recording of Young’s modulus ofelasticity, proof stress, tensile strength and elongation.6.1.1.2 ExtensometerThe extensometer accuracy shall be verified at intervals not exceeding 12 months in accordance withEN ISO 9513 and shall be certified for determination of: Young’s modulus of elasticity to class 0,5 or better and a type that is capable of measuring extension onboth sides of a test piece and allows readings to be averaged is preferred. Proof stress to class 1 or better.6.1.1.3 GripsGrips shall consist of screwed holders, shouldered holders, wedge pieces, pin grips or other means such thatthe tensile test force is applied axially.The use of screwed holders is recommended and shall be mandatory in case of dispute.