TL52291_EN_2007-11-01

Group Standard

TL 52291

Issue 2007-11

Class. No.: 55163

Descriptors:

AEM, ACM, hose, cylinder block and crankcase ventilation, resistant to engine oil, resistance to engine oil, resistant to fuel, resistance to fuel, ozone resistant, ozone resistance

Check standard for current issue prior to usage.

Page 1 of 5

The English translation is believed to be accurate. In case of discrepancies the German version shall govern. Numerical notation acc. to ISO practice.

This electronically generated standard is authentic and valid without signature.

Technical Responsibility Standards

K-GQL-LP/4 Peter Schulz Tel.: +49-5361-9-24365

K-GQL-LP/4 Dr. Lutz Wohlfarth Tel.: +49-5361-9-26049 K-GQL-LP Dr. Thomas Schilling

EKTC/4 Ute Hager-Süss

Tel.: +49-5361-9-49035

EKTC

Manfred Terlinden

Confidential. All rights reserved. No part of this document may be transmitted or reproduced without the prior permission of a Standards department within the Volkswagen Group.

Contract partners shall obtain the standard only through the B2B supplier platform https://www.sodocs.net/doc/1a1354753.html,.

? VOLKSWAGEN AG vwnorm-2007-07

AEM, Alternatively ACM for Hoses Material Requirements

Previous issues

1985-03, 1994-04, 1995-06, 2000-08, 2005-10

Changes

The following changes have been made as compared to Technical Supply Specification TL 52291: 2005-10: ─ General requirements expanded 1

Scope

This Technical Supply Specification specifies the material requirements for AEM and ACM for hoses, respectively.

Use e.g. for molded parts, like hoses for the cylinder block and crankcase ventilation which, apart from having conditional resistance to engine oil and fuel, shall be resistant to ozone, even after having been influenced by heat and substances. Temperature range: -35 °C to +160 °C 2

Description

AEM hose according to TL 52291

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TL 52291: 2007-11

3 Requirements

3.1 General requirements

Approval of first supply and changes according to Volkswagen standard VW 01155.

Avoidance of hazardous substances according to VW 91101.

Free of DOTG (di-o-tolylguanidine) and its breakdown product o-toluidine.

Required for complete testing: 5 finished parts; alternatively, test plates with a thickness of 2 mm.

3.2 Appearance of the parts

Free of blisters, inclusions, damage, surface flaws or other defects.

3.3 Design

According to drawing.

3.4 Marking

According to drawing.

3.5 Evaluation of the measurement results

The required numerical values apply to each individual measurement.

3.6 Marking according to VDA 260

>AEM< or >ACM<, respectively

3.7 Material

Polyethylene acrylate elastomer (AEM), alternatively polyacrylate elastomer (ACM)

3.8 Ignition residue according to Test Specification PV 3927

According to sample; tolerances according to VW 2.8.1.

4 Properties

See Table 1.

Table 1

No. Property Unit Requirement

1 Density according to

DIN EN ISO 1183-1 g/cm3According to sample;

tolerances according to VW 2.8.1

2 Hardness according to DIN 53505

2.1 As-received condition Shore A 70 ± 5

2.2 After aging at elevated temperature

see Section 5.1

2.2.1 94 h at +160 °C Shore A 0 to +8 compared to a s-received condition 2.2.2 504 h at +160 °C Shore A 0 to +15 compared to as-received condition 2.3 After fuel immersion aging

see Section 5.2

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TL 52291: 2007-11 No. Property Unit Requirement

2.3.1 FAM 2 Shore A 0 to -17 compared to as-received condition 2.3.2 Diesel fuel Shore A -7 to +1 compared to as-received condition 2.4 After fuel immersion aging and subsequent drying

see Section 5.3

2.4.1 FAM 2 Shore A 0 to +10 compared to as-received condition 2.4.2 Diesel fuel Shore A 0 to +6 compared to as-received condition

Shore A -6 to +2 compared to as-received condition 2.5 After aging in engine oil

see Section 5.4

3 Change in weight according to VW 2.8.1

3.1 After fuel immersion aging

see Section 5.2

3.1.1 FAM 2 % 0 to +60

3.1.2 Diesel fuel % 0 to +10

3.2 After fuel immersion aging and subsequent drying

see Section 5.3

3.2.1 FAM 2 % 0 to -10

3.2.2 Diesel fuel % 0 to -2

3.3 After aging in engine oil

% -2 to +6

see Section 5.4

4 Tensile strength according to DIN 53504

4.1 As-received condition N/mm2≥ 12,0

4.2 After aging at elevated temperature

see Section 5.1

4.2.1 94 h at +160 °C N/mm2

≥ 12,0

4.2.2 504 h at +160 °C N/mm2

4.3 After fuel immersion aging

see Section 5.2

4.3.1 FAM 2 N/mm2≥ 5,0

4.3.2 Diesel fuel N/mm2≥ 9,0

4.4 After fuel immersion aging and subsequent drying

see Section 5.3

4.4.1 FAM 2 N/mm2

≥ 10,0

4.4.2 Diesel fuel N/mm2

N/mm2≥ 10,0

4.5 After aging in engine oil

see Section 5.4

5 Elongation at break according to DIN 53504

5.1 As-received condition % 200 to 400

5.2 After aging at elevated temperature

see Section 5.1

5.2.1 94 h at +160 °C % ≥ 200

5.2.2 504 h at +160 °C % ≥ 150

5.3 After fuel immersion aging

see Section 5.2

5.3.1 FAM 2 % ≥ 100

5.3.2 Diesel fuel % ≥ 150

5.4 After fuel immersion aging and subsequent drying

see Section 5.3

5.4.1 FAM 2 %

≥ 200

5.4.2 Diesel fuel %

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TL 52291: 2007-11

No. Property Unit Requirement 5.5 After aging in engine oil

see Section 5.4

% ≥ 200

6 Permanent deformation according to PV 3307

6.1 94 h at +23 °C % ≤ 40,0

6.2 94 h at +120 °C % ≤ 60,0

7 Tear propagation strength according to DIN ISO 34-1

7.1 As-received condition N/mm

7.2 After aging at elevated temperature

see Section 5.1

N/mm ≥ 4,0

7.3 After fuel immersion aging

see Section 5.2

7.3.1 FAM 2 N/mm ≥ 0,8

7.4 After aging in engine oil

see Section 5.4

N/mm ≥ 3,0

8 Low-temperature behavior according

to VW 2.8.1

22 h at -35 °C Free of cracks and fractures when bent manually

9 Corrosion behavior according to

VW 2.8.1

Grade 2 permissible

10 Ozone resistance according to VW 2.8.1

folding stress

10.1 As-received condition

10.2 After aging at elevated temperature

see Section 5.1

10.3 After aging in engine oil

see Section 5.4

Free of cracks

11 Behavior with respect to crankcase gases according to PV 3936

after 6 cycles

11.1 General No decomposition and depolymerization

phenomena, no tackiness, no cracking 11.2 Hardness change Maximum of 20% of at least 55 Shore A 11.3 Tensile strength change Maximum of 40% of at least > 6 N/mm2 11.4 Elongation at tear change Maximum of 65% of at least > 80%

11.5 Weight change Maximum of +20%

5 Notes on testing

5.1 Aging at elevated temperature

S3A standard specimens shall be aged for the specified time at the specified temperatures in a forced ventilation oven according to DIN 53508. Measurements are performed 30 minutes after removal.

5.2 Fuel immersion aging

Appropriate specimens shall be aged for 46 h in FAM test fluids according to DIN 51604-1 (FAM 2). Measurements are performed 15 min after removal from the test fluid. The aging in diesel fuel is to be carried out in standard fluid A20 NP II made by Haltermann. After expiration of the exposure period of 46 h, any fluid adhering to the parts shall be removed using a rag or paper tissue. Evaluation is performed 15 min after removal.

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TL 52291: 2007-11

5.3 Fuel immersion aging and subsequent drying

The drying is to be carried out over a period of 22 h at +80 °C in a natural convection oven according to DIN 53505. Measurements are performed 15 minutes after removal. Specimen: S3A standard specimens.

5.4 Aging in engine oil

S3A standard specimens are aged for 94 h at +150 °C in SAE 5W-30 engine oil according to TL 52185. Measurements are performed 30 minutes after removal.

6 Referenced standards

The following documents cited in this standard are necessary for application.

In this Section, terminological inconsistencies may occur as the original titles are used.

PV 3307 Elastomer Components; Plastic and Elastic Deformability

PV 3927 Thermogravimetric Analysis for Plastics and Elastomers; Determination: Plasticizers, Carbon Black

PV 3936 Polymer Materials; Resistance Test to Components of Blow-By Gases

TL 52185 Reference Engine Oil SAE 5W-30 for Testing of Compatibility with Respect to Elastomer Materials; Lubricant Requirements

VW 2.8.1 Elastomers; Material Requirements and Testing

VW 01155 Vehicle Supply Parts; Approval of First Supply and Changes

VW 91101 Environmental Standard for Vehicles; Vehicle Parts, Materials, Operating Fluids; Avoidance of Hazardous Substances

DIN 51604-1 FAM Testing Fluid for Polymer Materials; Composition and Requirements DIN 53504 Testing of Rubber – Determination of Tensile Strength at Break, Tensile Stress at Yield, Elongation at Break and Stress Values in a Tensile Test DIN 53505 Testing of Rubber – Shore A and Shore D Hardness Test

DIN 53508 Testing of Rubber – Accelerated Ageing

DIN EN ISO 1183-1 Plastics – Methods for Determining the Density of Non-Cellular Plastics – Part 1: Immersion Method, Liquid Pyknometer Method and Titration Method DIN ISO 34-1 Rubber, Vulcanized or Thermoplastic – Determination of Tear Strength - Part 1: Trouser, Angle and Crescent Test Pieces

VDA 260 Bauteile von Kraftfahrzeugen; Kennzeichnung der Werkstoffe (Components of Motor Vehicles; Marking of Material – only available in German)