1、BS EN 4638:2010ICS 49.040NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Blast media Browncorundum, withoutironIncorporating corrigendumJuly 2011This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee o
2、n 31 May2010. BSI 2011ISBN 978 0 580 74380 1Amendments/corrigenda issued since publicationDate CommentsBS EN 4638:2010National forewordThis British Standard is the UK implementation of EN 4638:2010.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/65, Non-metallic mater
3、ials for aerospace purposes(excluding textiles).A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a
4、 British Standard cannot confer immunityfrom legal obligations.31 July 2011 Incorporating CEN correction notice 12 May 2010:modification of Figure B.1EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4638 April 2010 ICS 49.040 English Version Aerospace series - Blast media - Brown corundum, witho
5、ut iron Srie arospatiale - Produit de projetage - Corindon brun sans fer Luft- und Raumfahrt - Strahlmittel - Normalkorund, braun, eisenfrei This European Standard was approved by CEN on 6 February 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the co
6、nditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in t
7、hree official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies o
8、f Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom
9、. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4638:2010: EEN 4638:20
10、10 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Characteristics .4Annex A (normative) Characteristics of corundum .5Annex B (normative) Tyler type splitting method . 25Annex C (normative) Stack Splitting Method 28BS EN 4638:2010EN 4638:2010 (E) 3 Foreword This document (EN 4638:2
11、010) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of
12、 the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2010, and conflicting national standards shall be withdrawn at the latest by
13、 October 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standar
14、ds organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pol
15、and, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. The CEN correction notice 12 May 2010 provided a revised English language text incorporating the following editorial corrections: the link to Figure B.1 was missing and now has been added. BS EN 4638:2010E
16、N 4638:2010 (E) 4 1 Scope This standard specifies the characteristics of brown corundum without iron used as blast media for aerospace applications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the editio
17、n cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings ISO 8486-1, Bonded abrasives Determination and designation of gra
18、in size distribution Part 1: Macrogrits F4 to F220 3 Characteristics The characteristics for each product are specified in the following annexes. BS EN 4638:2010EN 4638:2010 (E) 5 Annex A (normative) Characteristics of corundum DESIGNATION: Brown corundum F 12 Main use: (for information) Surface pre
19、paration Surface reconditioning GRAIN SIZE: 1,20 mm to 2,80 mmDESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron oxide 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENTS: Non
20、e 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 2,80 mm 2 mm 1,40 mm % RESIDUE 0 20 70 TEST SIEVES -
21、 APERTURE 1,20 mm % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). BS EN 4638:2010EN 4638:2010 (E) 6 9 SPECIAL INSTRUCTIONS: None. DESIGNATION: Brown corundum F 14 Main use: (for information) Sur
22、face preparation Surface reconditioning GRAIN SIZE: 1 mm to 2,40 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENTS:
23、None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 2,40 mm 1,70 mm 1,20 mm % RESIDUE 0 20 70 TEST SI
24、EVES - APERTURE 1 mm % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4638:2010EN 4638:2010 (E) 7 DESIGNATION: Brown corundum F 16 Main use: (for information)
25、Surface preparation Surface reconditioning GRAIN SIZE: 850 m to 2 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENTS:
26、 None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 2 mm 1,40 mm 1 mm % RESIDUE 0 20 70 TEST SIEVES
27、- APERTURE 850 m % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4638:2010EN 4638:2010 (E) 8 DESIGNATION: Brown corundum F 20 Main use: (for information) Surf
28、ace preparation Surface reconditioning GRAIN SIZE: 710 m to 1,70 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENTS:
29、None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 1,70 mm 1,18 mm 850 m % RESIDUE 0 20 70 TEST SIEV
30、ES - APERTURE 710 m % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4638:2010EN 4638:2010 (E) 9 DESIGNATION: Brown corundum F 22 Main use: (for information) S
31、urface preparation Surface reconditioning GRAIN SIZE: 600 m to 1,40 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENT
32、S: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness)6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 1,40 mm 1 mm 710 m % RESIDUE 0 20 70 TEST SIEVE
33、S - APERTURE 600 m % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4638:2010EN 4638:2010 (E) 10 DESIGNATION: Brown Corundum F 24 Main use: (for information) S
34、urface preparation Surface reconditioning GRAIN SIZE: 500 m to 1,18 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENT
35、S: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness)6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 1,18 mm 850 m 600 m % RESIDUE 0 25 65 TEST SIEV
36、ES - APERTURE 500 m % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4638:2010EN 4638:2010 (E) 11 DESIGNATION: Brown corundum F 30 Main use: (for information)
37、Surface preparation Surface reconditioning GRAIN SIZE: 430 m to 1 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENTS:
38、 None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness)6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 1 mm 710 m 500 m % RESIDUE 0 25 65 TEST SIEVES -
39、APERTURE 425 m % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4638:2010EN 4638:2010 (E) 12 DESIGNATION: Brown corundum F 36 Main use: (for information) Surfa
40、ce preparation Surface reconditioning GRAIN SIZE: 360 m to 850 m DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENTS: Non
41、e 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness)6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 (m) TEST SIEVES - APERTURE 850 600 425 % RESIDUE 0 25 65 TEST SIEVES - APERT
42、URE 355 % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4638:2010EN 4638:2010 (E) 13 DESIGNATION: Brown corundum F 40 Main use: (for information) Surface prep
43、aration Surface reconditioning GRAIN SIZE: 300 m to 710 m DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRA
44、IN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness)6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 (m) TEST SIEVES - APERTURE 710 500 355 % RESIDUE 0 30 65 TEST SIEVES - APERTURE 300
45、 % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4638:2010EN 4638:2010 (E) 14 DESIGNATION: Brown corundum F 46 Main use: (for information) Surface preparation
46、 Surface reconditioning GRAIN SIZE: 250 m to 600 m DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAP
47、E: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness)6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 (m) TEST SIEVES - APERTURE 600 425 300 % RESIDUE 0 30 65 TEST SIEVES - APERTURE 250 % REMA
48、INDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4638:2010EN 4638:2010 (E) 15 DESIGNATION: Brown corundum F 54 Main use: (for information) Surface preparation Surfac
49、e reconditioning GRAIN SIZE: 210 m to 500 m DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: Brown 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 94 % - Titanium oxide 2,5 % Iron ox 0,2 % Free silica 1,5 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Kno
