SIST EN 4638:2010

Aerospace series - Blast media - Brown corundum, without iron

This standard specifies the characteristics of brown corundum without iron used as blast media for aerospace applications.

Luft- und Raumfahrt - Strahlmittel - Normalkorund, braun, eisenfrei

Diese Norm legt die Kenndaten von braunem, eisenfreiem Korund fest, der als Strahlmittel für Anwendungen in der Luft  und Raumfahrt vorgesehen ist.

Série aérospatiale - Produit de projetage - Corindon brun sans fer

Aeronavtika - Peskalna sredstva - Rjavi korund, brez železa

Ta standard opredeljuje značilnosti rjavega korunda brez železa, uporabljenega kot peskalno sredstvo za uporabo v aeronavtiki.

General Information

• Status: Published
• Publication Date: 01-Jun-2010
• ICS: 49.040 - Coatings and related processes used in aerospace industry
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 12-May-2010
• Due Date: 17-Jul-2010
• Completion Date: 02-Jun-2010
• Ref Project: EN 4638:2010 - Aerospace series - Blast media - Brown corundum, without iron

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Peskalna sredstva - Rjavi korund, brez železaLuft- und Raumfahrt - Strahlmittel - Normalkorund, braun, eisenfreiSérie aérospatiale - Produit de projetage - Corindon brun sans ferAerospace series - Blast media - Brown corundum, without iron49.040Prevleke in z njimi povezani postopki, ki se uporabljajo v letalski in vesoljski industrijiCoatings and related processes used in aerospace industryICS:Ta slovenski standard je istoveten z:EN 4638:2010SIST EN 4638:2010en01-julij-2010SIST EN 4638:2010SLOVENSKI
STANDARD



SIST EN 4638:2010



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4638
April 2010 ICS 49.040 English Version
Aerospace series - Blast media - Brown corundum, without iron Série aérospatiale - 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 conditions 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 three 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 of 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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: ESIST EN 4638:2010



EN 4638:2010 (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 . 28 SIST EN 4638:2010



EN 4638:2010 (E) 3 Foreword This document (EN 4638:2010) 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 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 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 standards 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, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 4638:2010



EN 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 edition 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 grain size distribution — Part 1: Macrogrits F4 to F220 3 Characteristics The characteristics for each product are specified in the following annexes. SIST EN 4638:2010



EN 4638:2010 (E) 5 Annex A (normative)
Characteristics of corundum DESIGNATION: Brown corundum F 12 Main use: (for information) – Surface preparation
– 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:
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/m3 7 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 - 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). SIST EN 4638:2010



EN 4638:2010 (E) 6 9 SPECIAL INSTRUCTIONS: None. DESIGNATION: Brown corundum F 14 Main use: (for information) – Surface 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 oxide < 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 (Knoop hardness)
9 (Mohs hardness) 6 DENSITY: - True with pyknometer
- ≥ 3 940 kg/m3 7 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 SIEVES - 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. SIST EN 4638:2010



EN 4638:2010 (E) 7
DESIGNATION: Brown corundum F 16 Main use: (for information) – Surface preparation
– Surface reconditioning GRAIN SIZE: 850 µm 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 oxide < 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 (Knoop hardness)
9 (Mohs hardness) 6 DENSITY: - True with pyknometer
- ≥ 3 940 kg/m3 7 GRAIN SIZE DISTRIBUTION:
GRAIN SIZE DISTRIBUTION ISO 565
TEST SIEVES - APERTURE 2 mm 1,40 mm 1 mm % RESIDUE 0 ≤ 20 ≥ 70 TEST SIEVES - APERTURE 850 µm
% 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. SIST EN 4638:2010



EN 4638:2010 (E) 8
DESIGNATION: Brown corundum F 20 Main use: (for information) – Surface preparation
– Surface reconditioning GRAIN SIZE: 710 µm 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 oxide < 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 (Knoop hardness)
9 (Mohs hardness) 6 DENSITY: - True with pyknometer
- ≥ 3 940 kg/m3 7 GRAIN SIZE DISTRIBUTION:
GRAIN SIZE DISTRIBUTION ISO 565
TEST SIEVES - APERTURE 1,70 mm 1,18 mm 850 µm % RESIDUE 0 ≤ 20 ≥ 70 TEST SIEVES - APERTURE 710 µm
% 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. SIST EN 4638:2010



EN 4638:2010 (E) 9
DESIGNATION: Brown corundum F 22 Main use: (for information) – Surface preparation
– Surface reconditioning GRAIN SIZE: 600 µm 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 oxide < 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 (Knoop hardness)
9 (Mohs hardness) 6 DENSITY: - True with pyknometer
- ≥ 3 940 kg/m3 7 GRAIN SIZE DISTRIBUTION:
GRAIN SIZE DISTRIBUTION ISO 565
TEST SIEVES - APERTURE 1,40 mm 1 mm 710 µm % RESIDUE 0 ≤ 20 ≥ 70 TEST SIEVES - APERTURE 600 µm
% 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. SIST EN 4638:2010



EN 4638:2010 (E) 10
DESIGNATION: Brown Corundum F 24 Main use: (for information) – Surface preparation
– Surface reconditioning GRAIN SIZE: 500 µm 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 oxide < 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 (Knoop hardness)
9 (Mohs hardness) 6 DENSITY: - True with pyknometer
- ≥ 3 940 kg/m3 7 GRAIN SIZE DISTRIBUTION:
GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 1,18 mm 850 µm 600 µm % RESIDUE 0 ≤ 25 ≥ 65 TEST SIEVES - APERTURE 500 µm
% 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. SIST EN 4638:2010



EN 4638:2010 (E) 11
DESIGNATION: Brown corundum F 30 Main use: (for information) – Surface preparation
– Surface reconditioning GRAIN SIZE: 430 µm 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 oxide < 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 (Knoop hardness)
9 (Mohs hardness) 6 DENSITY: - True with pyknometer
- ≥ 3 940 kg/m3 7 GRAIN SIZE DISTRIBUTION:
GRAIN SIZE DISTRIBUTION ISO 565
TEST SIEVES - APERTURE 1 mm 710 µm 500 µm % RESIDUE 0 ≤ 25 ≥ 65 TEST SIEVES - APERTURE 425 µm
% 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. SIST EN 4638:2010



EN 4638:2010 (E) 12
DESIGNATION: Brown corundum F 36 Main use: (for information) – Surface preparation
– Surface reconditioning GRAIN SIZE: 360 µm to 850 µm DESCRIPTION: 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:
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/m3 7 GRAIN SIZE DISTRIBUTION:
GRAIN SIZE DISTRIBUTION ISO 565 (µm) TEST SIEVES - APERTURE 850 600 425 % RESIDUE 0 ≤ 25 ≥ 65 TEST SIEVES - APERTURE 35
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