EN 586-2-1994 pdf download.Aluminium and aluminium alloys — Forgings —Part 2: Mechanical properties and additional property requirements.
This part of EN 586 specifies the mechanical properties and additional properties of forgings in aluminium and aluminium alloys for general engineering applications. The chemical composition and temper designations for these alloys are specified in EN 573-3 and EN 515 respectively.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.
EN 515, Aluminium and aluminium alloys — Wrought products — Temper designations.
EN 573-3, Aluminium and aluminium alloys — chemical composition and form of wrought products — Part 3: Chemical composition.
EN 586-1, Aluminium and aluminium alloys — Forgings — Part 1: Technical conditions for inspection and delivery.
EN 2004- 1, Aerospace series Test methods for aluminium and aluminium alloy, products — Part 1: Determination of electrical conductivity of wrought aluminium alloys.
EN 10002-1, Metallic materials — Tensile testing — Part 1: Method of test (at ambient temperature).
Part 1: Method of test (at ambient temperature).
Iso 6506:1981, Metallic materials — Hardness test — Brine!! test.
ISO 6507-1:1982, Metallic materials — Hardness test — Vickers test — Part 1: HV5 to HV 100. Iso 6508:1986, Metallic materials — Hardness test — Rockwell test (scales A-B-C-D-E-F-G-H-IO. Iso 9591:1992, corrosion of aluminium alloys — Determination of resistance to stress corrosion cracking.
For the definition of the terms forging, inspection lot and test, see EN 586.1
For the purposes of this standard the following definitions apply.
longitudinal direction
direction parallel to the primary grainflow, designated L
3.2
transverse direction (die forgings)
any direction not parallel to the primary grainflow, designated T
3.3
long transverse direction (hand forgings)
direction parallel to the major sectional dimension (width), designated lT
3.4
short transverse direction (hand forgings)
direction parallel to the minor sectional dimension (thickness). usually the direction of forging, designated ST
3.5
section size
diameter of the largest sphere which can he inscribed within the forging, designated t
4 Tensile testing
For the selection of specimens and orientation and preparation of test pieces, see EN 586-1. Tensile testing shall be carried out in accordance with
EN 10002-1.
5 Mechanical properties
The mechanical properties of class A aluminium alloys are given in Table 1 to Table 6. Test results shall be rounded in accordance with the rules given in annex A.
6 Electrical Conductivity
The electrical conductivity of forgings produced in EN AW-7075 material in the T73 and T7352 temper conditions shall be determined in accordance with EN 2004-1 as part of the inspection lot acceptance by testing the surface of the previously selected tensile test specimens to the criteria shown in Table 7.
7 Stress corrosion resistance
Forgings produced in EN AW-7075 material in the T73 and T7352 temper conditions shall be capable of exhibiting no evidence of stress corrosion cracking when subjected to Iso 9591:1992 accelerated stress corrosion cracking test.
For the purposes of this standard, the following provisions apply:
— a minimum of three adjacent replicate test pieces shall be taken from each specimen and submitted for test;
— exposure shall be carried out by alternate immersion in a 3,5 % by mass sodium chloride solution;
— test pieces shall be stressed in the short transverse direction with a stress level of 75 % of the specified proof stress;
— no stress corrosion related rupture shall be observed after a minimum exposure time of 20 days.
The method of stressing (bending, uniaxial loading, C-ring, etch). the shape and dimensions of the test pieces and the frequency of the test are left to the discretion of the supplier, who shall maintain records of all lots so tested and make them available for examination at the supplier’s facility for not less than five years.EN 586-2-1994 pdf download.