INDIRECT VERIFICATION OF CUSTOMERS' CHARPY MACHINESĪlthough the NIST campus is still partially open with staff limitations, we can receive and handle packages containing questionnaires and broken Charpy samples. Sets of 5 indirect verification specimens can be purchased for $576/set here. Specimens of three energy levels are available: low energy (SRM 2237, KV ≈ 4 J), high energy (SRM 2238, KV ≈ 14 J), and super-high energy (SRM 2239, KV ≈ 35 J). It's the reference specimen geometry in ASTM E2248-18.

The geometry of the Reduced Half-Size (RHS)-type specimens is: thickness and width = 4.83 mm, notch depth = 0.97 mm, notch root radius = 0.13 mm, length = 24.13 mm. These certified specimens can be used for the indirect verification of a small-scale impact machine, similar to the already existing NIST KLST-type miniaturized specimens (SRM 2216, 2218, 2219). Reduced half-size (RHS)-type miniaturized charpy specimens NEW ADDITION TO THE NIST CHARPY srm CATALOG: SRM 2199: Self-Verification, 2 mm strikers.Īll the available certified Charpy specimen types that can be purchased from NIST for the indirect verification of impact machines in accordance with ASTM E23 and ISO 148-2 can be found at.SRM 2099: Self-Verification, 8 mm strikers.SRM 2098: NIST-Verification, 8 mm strikers.(NIST-VERIFICATION AND SELF-VERIFICATION)ĪRE NOW AVAILABLE FOR PURCHASE IN THE NIST CATALOGUEĬustomers can now purchase from NIST the following certified super-high energy Charpy specimens (reference absorbed energy ≈ 200 J): Summary CERTIFIED SUPER-HIGH ENERGY CHARPY SPECIMENS

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