EN 15860:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Polimerni materiali - Plastomerni polizdelki za nadaljnjo obdelavo - Zahteve in preskusne metodeKunststoffe - Thermoplastische Halbzeuge für die spanende Verarbeitung - Anforderungen und PrüfmethodenMatières plastiques - Produits semi-finis thermoplastiques pour usinage - Exigences et méthodes d'essaiPlastics - Thermoplastic semi-finished products for machining - Requirements and test methods83.080.20PlastomeriThermoplastic materialsICS:Ta slovenski standard je istoveten z:EN 15860:2018SIST EN 15860:2018en,fr,de01-oktober-2018SIST EN 15860:2018SLOVENSKI
STANDARDSIST EN 15860:20101DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15860
July
t r s z ICS
z uä r z rä t r Supersedes EN
s w z x rã t r s rEnglish Version
Plastics æ Thermoplastic semiæfinished products for machining æ Requirements and test methods Matières plastiques æ Produits semiæfinis thermoplastiques pour usinage æ Exigences et méthodes d 5essai
Kunststoffe æ Thermoplastische Halbzeuge für die spanende Verarbeitung æ Anforderungen und Prüfmethoden This European Standard was approved by CEN on
t y March
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
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Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w z x rã t r s z ESIST EN 15860:2018

Determination of microporosity – Dye penetration method . 35 A.1 Test specimen preparation . 35 A.2 Test procedure . 35 A.3 Test results . 35 Annex B (normative)
Tables for the conversion of deflection values (straightness) . 37 Annex C (informative)
Examples of calculation of dimensional stability after heat treatment . 41 C.1 Rods . 41 C.2 Hollow bars . 41 C.3 Sheets . 42 Annex D (informative)
Some guideline values for material properties of thermoplastic semi-finished products . 44 Bibliography . 48
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3.1 semi-finished product rod, hollow bar and sheet from which finished parts are manufactured by means of machining 3.2 rod long, straight and solid product manufactured by means of extrusion, casting or compression moulding and having a uniform circular cross-section over their entire length 3.3 hollow bar long, straight and hollow product manufactured by means of extrusion, casting or compression moulding and having a uniform circular cross-section, with concentric inside and outside diameter, over their entire length 3.4 sheet flat, rectangular, solid product manufactured by means of extrusion, extrusion, calendering, casting or compression moulding and having a thickness of at least 0,2 mm which is uniform over their full cross- section 4 Materials The semi-finished products shall be made of thermoplastic materials (see Table 1). The compounds may contain additives such as processing aids, reinforcing agents, fillers, stabilizers or colorants, in which case, they are further referred to in this standard as “modified materials”. The nature and the quantity of these additives can influence the mechanical, thermal and electrical properties of the semi-finished products. The choice and the quantities of additives used are left to the discretion of the manufacturer. Table 1 — List of the thermoplastic materials most commonly used for the manufacture of semi-finished products Abbreviated terms Materials ABS Acrylonitrile-butadiene-styrene plastic PA6 Polyamide 6 PA6 C a Polyamide 6, cast PA66 Polyamide 66 PA12 Polyamide 12 PA12 C a Polyamide 12, cast PA46 Polyamide 46 SIST EN 15860:2018

+10,0 +1,5 +12,0 +1,5 SIST EN 15860:2018

over 320 up to 360 +8,5 +1,5 +13,5 +1,5 +12 +1,5 over 360 up to 400 +9,5 +1,5 +15,0 +1,5 +12 +1,5 over 400 up to 450 +10,5 +1,5 +16,5 +1,5 over 450 up to 500 +11,5 +1,5 +18,0 +1,5 over 500 up to 600 — +21 +3
over 600 up to 700 — +25 +3 Rods made from reinforced materials do not have to meet the tolerances given in their respective column but those in column 3. Tolerances on other diameters or deviating tolerances shall be agreed upon between manufacturer and customer. NOTE The tolerances in Table 2 apply to rods made from modified and non-modified materials. 5.3.2 Length The tolerance on length is 0 % to +3 %. The rods shall have neatly trimmed end faces – perpendicular to their longitudinal axis – so that the nominal length can always be obtained. Deviating tolerances on the length shall be agreed upon between manufacturer and customer. 5.3.3 Roundness The roundness deviation – the difference between the largest and the smallest diameter measured within the same cross-section – shall not be larger than half the tolerance range given in Table 2 (corresponds to upper and lower tolerance) for the respective diameter. SIST EN 15860:2018

Key 1 measuring ruler d diameter f deviation from straight line Figure 1 — Principle of the straightness measurement for rods Table 3 — Straightness requirements for rods Dimensions in millimetres Diameter ranges Maximum allowable deviations from straight line fmax. all Column 1 Column 2 Column 3 Column 4 ABS POM PA12 PA12 C PA46 PA6 PA6 C PA6/12 C PA66 PBT PC PEEK PEI PESU PET PPE + PS PPS PPSU PSU PE-LD PE-HD PE-UHMW b PVDF PP-H PP-B PP-R PVC-C PVC-HI PVC-U non-fibre- reinforced a fibre- reinforced up to 20 8,0 10,0 15,0 10,0 10,0 over 20 up to 32 5,0 6,5 12,0 8,0 8,0 over 32 up to 50 4,0 5,0 10,0 8,0 8,0 SIST EN 15860:2018

Key 1 measuring ruler d inside diameter D outside diameter f deviation from straight line Figure 2 — Principle of the straightness measurement for hollow bars SIST EN 15860:2018

¿E is less than or equal to 0,8 b (dnom
« dmax) and less than or equal to 0,8 b (Dmin
« Dnom), see Figure 3. ∆=−≤⋅−nommax08maxmin,()EEEdd and ∆=−≤⋅−minnom08maxmin,()EEEDD where Emax is the maximum wall thickness in cross-section; Emin is the minimum wall thickness in cross-section; dnom is the nominal inside diameter; dmax is the measured maximum inside diameter; Dnom is the nominal outside diameter; Dmin is the measured minimum outside diameter. SIST EN 15860:2018

Key D outside diameter d inside diameter Emax maximum wall thickness in cross-section Emin minimum wall thickness in cross-section
¿E/2 concentricity deviation Figure 3 — Principle of the concentricity measurement 5.5 Dimensions and tolerances for sheets 5.5.1 Thickness The thicknesses commonly available are given in the delivery programmes of the manufacturers. The tolerances on thicknesses are given in Tables 6 and 7 for different thickness ranges. Table 6 — Tolerances on the thicknesses for calendered sheets Dimensions in millimetres Thickness Tolerances ABS, PA6, PA66, PA12, PA46, PBT, PEEK, PEI, PESU, PET, POM, PPE+PS, PPS, PPSU, PSU 0,2 to 0,5 ±0,05 over 0,5 to 1,2 ±0,10 over 1,2 to 2,5 ±0,15 over 2,5 to 4 ±0,20 over 4 to 6 ±0,25 NOTE ISO 15014 and EN ISO 11963 are applicable for tolerances on PVDF and PC respectively. SIST EN 15860:2018

Key 1 measuring ruler L length 2 direction of extrusion (if applicable) f1 deviation from straight line 3 flat surface Aa side view H thickness Bb top view a) Principle of straightness measurement on sheets over the length (L) SIST EN 15860:2018

Key 1 measuring ruler B width 2 flat surface f2 deviation from straight line H thickness
b) Principle of the straightness measurement on sheets over the width (B) SIST EN 15860:2018

Key 1 measuring ruler 2 direction of extrusion (if applicable) L length B width f3 deviation from straight line c) Principle of the straightness measurement on sheets along the edges Figure 4 — Principle of the straightness measurement on sheets SIST EN 15860:2018

f1 (see Figure 4 a)) f2 (see Figure 4 b)) f3 (see Figure 4 c)) up to 6 6,0 7,0 4,0 over 6 up to 16 4,0 5,0 over 16 up to 25 2,5 3,5 over 25 up to 50 2,0 over 50 1,5 Deviating straightness requirements shall be agreed upon between manufacturer and customer. NOTE The limit values in Table 8 apply to unmachined sheets made from modified and non-modified materials. 5.6 Properties 5.6.1 Material properties The property values shall be in accordance with the manufacturer's declaration and shall be documented. Some guideline values for material properties are given in Annex D. 5.6.2 Dimensional stability after heat treatment The dimensional stability after heat treatment is determined by means of the test described in 6.14 as well as described in Annex C. The relative changes in length, thickness and diameter of semi-finished products made from non-modified materials such as polyamide (PA), polybutylene terephthalate (PBT), polycarbonate (PC), polyetheretherketone (PEEK), polyethylene terephthalate (PET), polyoxymethylene (POM), polystyrene modified polyphenylene ether (PPE+PS) and polyvinylidenfluoride (PVDF) shall not exceed the guideline values given in Table 9 derived from measurements from sheets 20 mm high and rods with a diameter of 50 mm to 60 mm. NOTE There are no values available yet for the other materials listed in Table 1. SIST EN 15860:2018

Guideline values for the relative dimensional changes mm PA6 PA6 C PA66 PA12 PA12 C PA46 PA6/12 C PBT PC PEEK PET PPE+PS POM PVDF Rods d
· 12 to
¶ 200
Hollow bars D
¶ 300 and E
¶ 40 1,75 % 1,5 % 1,5 % 1,5 % 1,0 % 1,5 % 1,5 % 1,25 % 0,25 % 1,0 % 1,0 % 0,25 % 0,75 % 1,0 % Sheets H
· 5 to
¶ 100 0,75 % 0,5 % 0,75 % 1,0 % 0,5 % 1,0 % 0,5 % 0,75 % 0,25 % 1,0 % 0,75 % 0,25 % 0,5 % 0,75 %
NOTE These figures apply to semi-finished products with a moisture content of
¶ 0,2 %. SIST EN 15860:2018
Key 1 test specimen s thickness w width d diameter Figure 5 — Taking test specimens from rods
Key 1 test specimen s thickness w width d inside diameter D outside diameter E wall thickness Figure 6 — Taking test specimens from hollow bars SIST EN 15860:2018

Key 1 test specimen s thickness w width H sheet thickness B sheet width Figure 7 — Taking test specimens from sheets The test specimen shall be free from surface defects to avoid notch effects. Burrs created during machining shall be removed without, however, damaging the surfaces, e.g. creating notches. If necessary, the test specimen surfaces shall be finished with abrasive paper – grain size 240 or finer – or other suitable means. This finishing operation shall be carried out parallel to the long side of the test specimens. 6.3.2 Density The test specimens shall be taken from the semi-finished products at the positions shown in Figures 5, 6 and 7. During this operation, the material shall not be deformed, overheated or melted. 6.3.3 Melt volume-flow rate, viscosity number, melting temperature/glass transition temperature The test specimens, in the form of granules or chips, shall be taken from the semi-finished products at the positions shown in Figures 5, 6 and 7. Care shall be taken that the material is not overheated or melted during this operation. If the melt volume-flow rate (MVR) or melting temperature of moisture-sensitive materials is not tested directly after sampling, the test specimens shall be stored in a desiccator with a drying agent. The testing shall be carried out on dry test specimens. 6.3.4 Dimensional stability after heat treatment 6.3.4.1 Rods/hollow bars At least three test specimens having a length (l) of (25 ± 0,1) mm shall be taken at least 30 mm from the end faces of the rod or hollow bar. The test specimen diameter shall be the same as in the “as-delivered” condition so that the diameter of the test specimen is equal to the diameter of the rod or hollow bar. The end faces of the test specimens shall be machined (turned/milled) to be plane-parallel and smooth; see Figures 9 and 10. 6.3.4.2 Sheets At least three test specimens of (50 ± 0,2) mm (milled/planed) × (60 ± 1) mm (saw-cut) (rectangular blocks) shall be machined from the sheets. The test specimens are taken uniformly over the width of the SIST EN 15860:2018

Key 1 test specimens 2 direction of extrusion (if applicable) L length of sheets B width of sheets Figure 8 — Sampling test specimens from sheets 6.4 As-delivered condition The surfaces shall be assessed visually without the use of optical instruments for blisters, gouges, voids, cracks or other defects. Testing for internal defects may be carried out by means of ultrasound or alternatively by means of optical checking of the trimmed edges. 6.5 Surface appearance The surface appearance shall be assessed visually without the use of optical instruments. Possible marks and irregularities shall be evaluated by machining to nominal size. 6.6 Accuracy of the dimension measuring instruments The accuracy of the instruments used for the determination of the diameter, thickness and straightness of the semi-finished products should be 0,1 mm. The accuracy for the determination of width and length of the semi-finished products should be 1 mm. 6.7 Density The density shall be determined according to EN ISO 1183-1 or EN ISO 1183-2 on at least 3 test specimens each having a minimum mass of 1 g. SIST EN 15860:2018
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