BS/EN 941-2014 pdf download.Aluminium and aluminium alloys Circle and circle stock for the production of general applications Specifications.
— Circles made out of hot or cold rolled circles stock by:
— Blanking: thickness 0,2 mm up to including 12 mm and with a diameter up to 1 000 mm;
— Sawing or shearing: thickness 0,2 mm up to and including 200 mm with a diameter up to 3 500 mm;
— Hot or cold rolled circle stock with a thickness from 0,2 mm up to and including 200 mm and with a width up to 3 500 mm.
It does not apply to slugs for impact extrusions or to circle and circle stock for culinary utensils applications which are dealt with in other European Standards.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 485-1 :2008+A1 :2009. Aluminium and aluminium alloys – Sheet, strip, and plate – Part 1: Technical conditions for inspection and delivery
EN 485-2. Aluminium and aluminium alloys – Sheet, strip and plate – Part 2: Mechanical properties
EN 485-3:2003, Aluminium and aluminium alloys – Sheet, strip and plate – Part 3: Tolerances on dimensions and form for hot-rolled products
EN 485-4:1993, Aluminium and aluminium alloys – Sheet, strip and plate – Part 4: Tolerances on shape and dimensions for cold-rolled products
EN 515. Aluminium and aluminium alloys – Wrought products – Temper designations
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
circle
circular flat product obtained by circular sawing or shearing, or by blanking of a flat rolled product with a uniform thickness over 0,20 mm
3.2
circle stock
flat rolled product of rectangular cross-section with uniform thickness over 0,20 mm. supplied in coils, sheets, or plates, usually with sheared or sawn edges, and intended to be sawn, sheared o blanked into flat shapes to be subsequently formed, drawn, etc.
Note 1 to entry: The thickness does not exceed one tenth of the width.
3.3
hot rolled circle and circle stock
circle or circle stock whose final thickness is obtained by hot rolling
3.4
cold rolled circle and circle stock
circle or circle stock whose final thickness is obtained by cold rolling
4 Technical conditions for inspection and delivery
4.1 General
All the provisions of EN 485-1 shall apply, except Clause 4 (orders arid tenders; wflich is moatuec as toiiows:
4.2 Orders or tenders
The order or tender shall define the product required and shall contain the following information:
a) the form and the type of product:
1) the form of the product (circle and circle stock):
2) the designation of the aluminium or aluminium alloy
3) the customer application,
b) the metallurgical temper of the material for delivery according to EN 515 (degree of hardness or heat treatment condition) and, if different, the metallurgical temper for use;
C) the number of this European Standard or Specification number, or where none exists, the properties greed between purchaser and supplier:
d) the dimensions and shape of the product as applicable:
The mechanical properties shall conform to the requirements specified in EN 485-2.
6 Tolerances on dimensions and form
6.1 General
All provisions of EN 485-3 and EN 485-4 shall apply with the following amendments and additions.
6.2 Diameter
Tolerances on diameters for circle shall conform to Table 1. These tolerances include the tolerances on roundness.
NOTE For circle obtained by blanking the recommended standard diameters are:
— From 100 mm up to 500 mm nominal diameter: every multiple of 5;
— Over 500 mm up to 1 000 mm nominal diameter: every multiple of 10.
6.3 Thickness
Tolerances on thickness for hot rolled circle and circle stock shall conform to Table 2. They are identical to those specified in Table 1 of EN 465-3:2003 and are reproduced here for convenience.
The tolerances on thickness for cold rolled circle and circle stock shall conform to Table 3. They are identical to those specified in Table 1 of EN 485-4:1993 and are reproduced here for convenience. The partition into group I and group II of most common materials which may be used for the present application shall be as shown in Table 4.
6.4 Tolerances on flatness for circles
Tolerances on flatness for circles, expressed as a percentage of the diameter D and/or the measured chord length L, shall conform to Table 5.
Deviation from flatness d, resulting from arching or buckling, shall be measured as shown in Figures 1 and 2,
using a lightweight straightedge and a feeler gauge, dial gauge or scale, while the circle is resting on a
horizontal base plate, concave side upwards.
Two measurements shall be carried out with the straight edge respectively parallel and perpendicular to the rolling direction.BS/EN 941-2014 pdf download.