BS 131-6: Notched bar tests — precision Charpy V-notch impact energies (metals)

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BS 131-6 is a British Standard for a precision Charpy V-notch impact test on metals, emphasizing tight control of test conditions for reference-quality results. To match this to your program, talk with our team.

What BS 131-6 Covers

The method applies the Charpy V-notch impact test with additional control of the variables that affect scatter, aimed at high-precision or reference measurements. It sits within the BS 131 impact series.

Current Framework

For harmonized testing, the current reference is ISO 148-1 with machine verification to ISO 148-2. Precision requirements from BS 131-6 can be mapped onto these.

Reading the Designation

Cited as BS 131-6 with its year. Confirm whether the current ISO method is expected. To configure impact testing, request a quote.

Related Standards

BS 131-1 covers the Izod test and ISO 148-1 is the current Charpy method.

Request a Quote

Setting up precision Charpy testing? Request a quote and our team will help you build a system matched to your specimen type and test temperature.


TensileMill CNC products for BS 131-6

Our specimen-preparation systems and testing equipment compatible with BS 131-6:


Get ready for BS 131-6 with TensileMill CNC

TensileMill CNC designs and builds the systems labs use for standards-based mechanical testing. Depending on your specimens, that can include CNC systems for flat and round impact specimen preparation with precision notching. Share your material mix and throughput, and we will recommend a setup that fits BS 131-6.