BS EN 754-8:2016 – TC:2020 Edition
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Tracked Changes. Aluminium and aluminium alloys. Cold drawn rod/bar and tube – Porthole tubes, tolerances on dimensions and form
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 43 |
This European Standard specifies the tolerances on dimensions and form for aluminium and aluminium alloy cold drawn porthole tubes with an outside diameter (OD) from 3 mm to 350 mm (round tube, see Figure 1) or with a cross section contained within a circumscribing circle (CD) from 8 mm to 300 mm (other than round tube, see Figure 2), supplied in straight lengths. This document only applies to cold drawn tube for general engineering applications made in the following alloys: – EN AW-1050A, EN AW-1200; – EN AW-3003, EN AW-3103; – EN AW-5005, EN AW-5005A, EN AW-5049, EN AW-5251, EN AW-5052; – EN AW-6012, EN AW-6060, EN AW-6061, EN AW-6262, EN AW-6262A; – EN AW-6063, EN AW-6063A, EN AW-6065, EN AW-6082; – EN AW-7020. The temper designations used in this part are according to EN 515. This document only applies to tube produced by the porthole/bridge method of extrusion only (and then cold drawn to the final dimensions). This document does not apply to: – cold drawn tubes produced by the seamless, die/mandrel method (EN 754-7), – tubes delivered in coils (EN 13958), – coiled tubes cut to length (EN 13958). (…)
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 25 | Contents Page |
| 26 | European foreword |
| 27 | 1 Scope Figure 1 — Round tube |
| 28 | Figure 2 — Circumscribing circle for other than round tube 2 Normative references 3 Tolerances on dimensions 3.1 General 3.2 Diameter – Round tube |
| 29 | Table 1 — Tolerances on diameter for round tube 3.3 Width, depth or width across flats – squares, rectangles, hexagons, octagons |
| 30 | Table 2 — Tolerances on width, depth or width across flats 3.4 Wall thickness variation (eccentricity) |
| 31 | Table 3 — Tolerances on wall thickness variation (eccentricity) for round tubes 3.5 Length Table 4 — Tolerances on fixed length |
| 32 | 3.6 Squareness of cut ends 4 Tolerances on form 4.1 General 4.2 Straightness Figure 3 — Measurement of the deviation from straightness |
| 33 | Table 5 — Straightness tolerances 4.3 Convexity–Concavity Figure 4 — Measurement of convexity – concavity |
| 34 | Table 6 — Convexity – concavity tolerances 4.4 Twist Figure 5 — Measurement of twist |
| 35 | Table 7 — Twist tolerances 4.5 Angularity Figure 6 — Measurement of deviation from square |
| 36 | Table 8 — Squareness tolerances for square and rectangular tube 4.6 Corner and fillet radii 4.7 Depth of dents for round tubes |
| 37 | Table 9 — Depth of dents tolerances for round tube |
| 38 | Annex A (informative) Wall thickness variation (eccentricity) A.1 General A.2 Specifying round tube sizes and tolerances A.2.1 General Figure A.1 — Minimum and maximum values of the tube wall thickness A.2.2 Wall thickness variation for tubes specified as OD × t or ID × t |
| 39 | A.2.3 Wall thickness variation for tubes specified as OD × ID |
| 40 | Bibliography |
