ISO 9854

Introducing ISO 9854 – Industrial Physics

ISO 9854 is an ISO international testing method that will help you to determine the Charpy impact properties of thermoplastics pipes used for transporting fluids using a pendulum impact tester. 

The ISO 9854 testing methods

To perform a successful ISO 9854 thermoplastic test you’ll need to take a short length of pipe, or a sample stripe, conditioned at a selected temperature. You’ll need to support this sample near its ends as a horizontal beam.

Next up in this impact test you subject your sample to a single blow from the striker of a pendulum impact testing machine at a high and constant velocity. The line of impact should be midway between the supports. In the case of edgewise / flatwise impact with notched specimens, the line of impact is directly opposite the notch. 

ISO 9854 testing methods

Within the ISO 9854 testing method documents there are two different approaches to follow. These depend on how you choose to prepare your thermoplastic pipe test samples before you test them.  

• ISO 9854 test method A: the unnotched approach – for unnotched specimens cut from thermoplastics pipes  
• ISO 9856 test method B: the notched method – for specimens cut from thermoplastics pipes and notched before testing. 

The use of Method A or Method B is determined by the relevant product standards. 

ISO 9854 Charpy impact testing key definitions

You’ll need to understand a few key definitions in order to carry out a successful ISO 9854 impact test and these include:  

Charpy impact strength of notched specimens: the impact energy absorbed in breaking a notched specimen, referring to the original cross–sectional area of the specimen at the notch. 

Nominal outside diameter: specified outside diameter, assigned to a nominal size DN/OD. 

Nominal wall thickness: the numerical designation of the wall thickness of a component, which is a convenient round number, approximately equal to the manufacturing dimension. 

Remaining thickness: thickness at the notch tip of test pieces which have been notched. 

ISO 9854 impact testing apparatus

To carry out a successful ISO 9854 Charpy impact test you’ll need a selection of the following equipment, all of which Industrial Physics can supply – just get in touch!

Pendulum impact-testing machine: the principles, characteristics and verification of a suitable pendulum impact-testing machine need to conform to ISO 13802. 

Micrometers and gauges: capable of measuring the essential dimensions of test specimens to an accuracy of 0.02mm are required.  

Ambient equipment: you’ll either need a thermostatically controlled enclosure or a liquid bath capable of bringing the specimens to the specified temperature.  

Temperature measuring equipment: capable of checking conformity to the specified temperature with an accuracy to within ±0.5 °C. 

ISO 9854 Charpy impact testing equipment

So, how can Industrial Physics improve your ISO 9854 Charpy impact testing? 

Advanced Pendulum Impact System – Ray-Ran
Our Pendulum Impact Tester uses microprocessor technology to determine the energy required to break or rupture specimens in plastic or ceramics. The apparatus can test Izod, Charpy or Tension Impact. It can also perform small diameter pipe testing, as well as component impact and puncture tests. 

Need ISO 9854 impact testing solutions? Get in touch

We’ve learnt a thing or two about Charpy impact resistance testing over the decades. Now Industrial Physics is recognized as a brand that likes to bring new, innovative impact resistance testing equipment, including pendulum impact testing machines to market. 

We like to share our knowledge and we’re here to help you to answer your questions about impact resistance testing. Across the knowledgebase section of our website we publish lots of blogs on related subjects. For example, here’s a piece that explores the various types of impact test inspection equipment on the market. 

If you have any questions about ISO 9854 and how we can help you with your Charpy impact testing, then please just get in touch!

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Your global test and measurement partner for ISO 9854