Low Temperature Brittleness Tester

Listing ID #4157954

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Product Details

The Ray-Ran Low Temperature Brittleness Tester has been designed to study the effects low temperatures have on plastic materials when subject to impact loads and conforms to ASTM D746 and ISO R974 International Test Standards. Many materials which are flexible at normal ambient temperatures become brittle at low temperatures which severely affect the materials impact strength. By plotting the percentage failure rate of the test samples against the reduction in temperature, the brittleness temperature of the test samples can be determined.
The apparatus consists of a low temperature bath with electronic PID temperature controller and a PT100 platinum resistance thermometer accurate to 0.1°C which accurately controls the heating cycle of the test and records the temperature next to the test samples. Precise temperature control is readily achieved by means of a built-in heater which in conjunction with controlled addition of refrigerant enables any temperature down to -70°C to be readily attained and held. To ensure temperature stability within the bath during the cooling and heating cycle a stirrer motor system is also fitted to the apparatus. Suitable means should be used to ensure the liquid medium can be lowered to the test temperatures required such as adding solid carbon dioxide (dry ice) to Methyl Alcohol.
The test procedure is very simple to conduct and a sufficient number of test specimens should be tested so the Brittleness Temperature can be calculated on a statistical basis. Test specimens are clamped in a stainless steel cantilever beam fixture which is immersed into the low temperature bath. The specimens are allowed to condition at a maintained temperature in the heat transfer medium and are then simultaneously subjected to a single blow given by a free falling pendulum impact hammer through the means of an intermediate striker at a constant velocity of 2.1 m/s. The samples are then removed and examined to determine whether failure has occurred. Temperatures are then increased or decreased to find the temperature at which 50% of the specimens fail. This is defined as the Brittleness Temperature.
Technical Specification

Integrated low temperature bath
PID electronic temperature control
Resolution 0.1°C
PT100 PRT sensor accurate to 0.1°C
Integrated stirrer motor
Temperature range - 70°C to 100°C
Stainless steel cantilever clamp
Easy specimen removal
Manual pendulum release
Low friction bearing assembly
Integrated specimen striker head
Impact velocity 2.1 m/s
Test sample cutting die
Product user manual
CE declaration certificate

Optional Ancillaries

Specimen cutter Type A
Specimen cutter Type B
Specimen cutter Type C
Specimen Clamps to ISO or ASTM test standard.

Company Details

at polytech, we follow our simple road map hire the best technical staff and field engineers, have an honest and positive approach and provide the best value for money to our customers in forms of instruments and services. this coupled with the simple tried and tested formula of timely delivery as well as effective and prompt after sales service is our mantra for success.
with the purpose of providing cost effective solutions for scientific instruments as well as laboratory testing instruments backed by industry-leading warranties, our product engineers start with a clear, concise vision laying out your objectives and expectations as well as the resources required to successfully delivering your product. while working on each plan, we communicate frequently with you to keep you updated on the process as well as interact with you to ensure that the product meets your specifications and timely deliveries.
to maintain a steadfast focus on qualitative improvements that drives and empowers our presence is the rationalized business policy at polytech. we not only aim and strive to deliver impeccable service - results that are simply faultless - but to collaborate with our customers as their partners in growth and envision our success in their achievements.