ASTM E471 is a standard test method for obtaining the char density profile of ablative materials by machining and weighing. This technique involves measuring, machining, and weighing a sample of a specific size to determine its density. Therefore, the sample must be strong enough to withstand all techniques used. The result is expressed in SI units.
ASTM E 471 Standard Test Method for Obtaining Char Density Profile of Ablative Materials by Machining and Weighing
What is ASTM E471?
What is the Scope of ASTM E471?
ASTM E 471 is a highly preferred method in measuring the density profile of ablative materials. This technique can be highly efficient if the char can be machined off in a plane parallel to the char-virgin material, and the total thickness of the char and degradation zone combined must be larger than the machining thicknesses required.
- This test method determines the char density profile of a charred ablator and it is used with the following limitations: (a) The local surface imperfections are removed and the char is machined off in a plane parallel to the char-virgin substance interface prior to the density profiles detrmination, (b) The char must be strong enough to withstand the machining and handling techniques employed, (c ) The material need to have orderly density variations. The total given thickness of the char and degradation zone need to be greater than the required machining thickness.
- The values stated in SI units are considered standard.
ASTM E471 Testing Procedure and Requirements
ASTM E 471 involves successive measuring, machining, and weighing a sample of a known size. Then the density of the sample is obtained with machining. The charred sample selected should be taken from a representative section of the ablated specimen where the environmental conditions are well known and where the surface is parallel to the char-virgin material interface. A typical specimen size should be 12.7 by 12.7 mm.
ASTM E471 Result Analysis and Interpretation
FAQ
Where can I get the astm e471 tested?
You can share your astm e471 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e471 test to various testing techniques.
How much do I need to pay for the astm e471 test?
Please contact us for a detailed quote for your astm e471 testing needs. Cost incurred to carry out different astm e471 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for astm e471?
The required number of samples or specimens should comply with the procedure given in the astm e471 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the astm e471 test?
MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the astm e471 test?
The turnaround time for astm e471 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
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