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BS EN ISO 179-1:2010

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Plastics. Determination of Charpy impact properties Non-instrumented impact test
Available format(s)

Hardcopy , PDF

Superseded date

19-06-2023

Language(s)

English

Published date

31-07-2010

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test specimens
7 Procedure
8 Calculation and expression of results
9 Precision
10 Test report
Annex A (informative) - Additional methods for investigating
        the influence of surface effects
Annex B (informative) - Precision data
Annex C (informative) - Determining the notch tip radius using
        a CCD microscope
Bibliography

Defines a method for determining the Charpy impact strength of plastics under defined conditions. A number of different types of specimen and test configurations are defined.

1.1 This part of ISO 179 specifies a method for determining the Charpy impact strength of plastics under defined conditions. A number of different types of specimen and test configurations are defined. Different test parameters are specified according to the type of material, the type of test specimen and the type of notch.

1.2 The method can be used to investigate the behaviour of specified types of specimen under the impact conditions defined and for estimating the brittleness or toughness of specimens within the limitations inherent in the test conditions. It can also be used for the determination of comparative data from similar types of material.

1.3 The method has a greater range of applicability than that given in ISO 180[1] and is more suitable for the testing of materials showing interlaminar shear fracture or of materials exhibiting surface effects due to environmental factors.

1.4 The method is suitable for use with the following range of materials:

  • rigid thermoplastic moulding and extrusion materials (including filled and reinforced compounds in addition to unfilled types) and rigid thermoplastics sheets;

  • rigid thermosetting moulding materials (including filled and reinforced compounds) and rigid thermosetting sheets (including laminates);

  • fibre-reinforced thermosetting and thermoplastic composites incorporating unidirectional or multi-directional reinforcements (such as mats, woven fabrics, woven rovings, chopped strands, combination and hybrid reinforcements, rovings and milled fibres) or incorporating sheets made from pre-impregnated materials (prepregs), including filled and reinforced compounds;

  • thermotropic liquid-crystal polymers.

1.5 Notched samples are not normally suitable for use with rigid cellular materials, long-fibre-reinforced composites or thermotropic liquid-crystal polymers. In these cases, unnotched samples may be used.

1.6 The method is suited to the use of specimens moulded to the chosen dimensions, machined from the central portion of a standard multipurpose test specimen (see ISO 3167) or machined from finished or semifinished products such as mouldings, laminates and extruded or cast sheet.

1.7 The method specifies preferred dimensions for the test specimen. Tests which are carried out on specimens of different dimensions or with different notches, or specimens which are prepared under different conditions, might produce results which are not comparable. Other factors, such as the energy capacity of the apparatus, the impact velocity and the conditioning of the specimens can also influence the results. Consequently, when comparative data are required, these factors must be carefully controlled and recorded.

1.8 The method should not be used as a source of data for design calculations. Information on the typical behaviour of a material can be obtained, however, by testing at different temperatures, by varying the notch radius and/or the specimen thickness and by testing specimens prepared under different conditions.

Committee
PRI/21
DevelopmentNote
Supersedes 08/30192288 DC. (07/2010)
DocumentType
Standard
Pages
31
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

BS 8567:2012 Specification for outdoor electricity meter cupboards
BS 8499:2017 Specification for domestic gas meter boxes and meter bracket
DEFSTAN 02-701(PT3)/3(2013) : 2013 GLASS REINFORCED PLASTIC (GRP) MOULDINGS - PART 3: A GUIDE TO THE VARIOUS TESTS AND TESTING METHODS FOR THE EVALUATION OF THE QUALITY OF GRP MOULDINGS
11/30240637 DC : 0 BS 8567 - SPECIFICATION FOR OUTDOOR ELECTRICITY METER CUPBOARDS
BS 8499:2009 Specification for domestic gas meter boxes and meter bracket
09/30160438 DC : DRAFT JAN 2009 BS 8499 - SPECIFICATION FOR DOMESTIC GAS METER BOXES AND METER BRACKET

ISO 293:2004 Plastics — Compression moulding of test specimens of thermoplastic materials
ISO 3167:2014 Plastics Multipurpose test specimens
ISO 294-3:2002 Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small plates
ISO 295:2004 Plastics — Compression moulding of test specimens of thermosetting materials
ISO 10724-1:1998 Plastics — Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) — Part 1: General principles and moulding of multipurpose test specimens
ISO 2602:1980 Statistical interpretation of test results Estimation of the mean Confidence interval
ISO 180:2000 Plastics Determination of Izod impact strength
ISO 291:2008 Plastics Standard atmospheres for conditioning and testing
ISO 294-1:2017 Plastics — Injection moulding of test specimens of thermoplastic materials — Part 1: General principles, and moulding of multipurpose and bar test specimens
ISO 2818:1994 Plastics — Preparation of test specimens by machining
ISO 1268-11:2005 Fibre-reinforced plastics — Methods of producing test plates — Part 11: Injection moulding of BMC and other long-fibre moulding compounds — Small plates
ISO 13802:2015 Plastics — Verification of pendulum impact-testing machines — Charpy, Izod and tensile impact-testing

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