NIST冲击试样 Impact Standards: Charpy V-Notch and Izod Impact Specimens   These SRMs are test specimens intended primarily for the verification of Charpy V-Notch testing machines and Izod testing machines. The dimensions of these SRMs comply with the current ASTM Standard E23 and the current ISO 148-1 Standard.   SRMs 2092, 2096, and 2098 are NIST-Verification Charpy V-notch specimens that have a post-test evaluation service and proficiency test data available with them. SRMs 2092 and 2096 are to be tested at -40° C; SRM 2098 is to be tested at room temperature (21 °C). These SRMs should be tested (broken) at the same time, then returned to NIST Boulder for evaluation. An acceptable machine will produce an average value within 1.4 J or 5% of the certified energy value, whichever is greater. SRM2092、2096和2098是NIST SRMs 2093 and 2097 are Self-Verification Charpy V-notch specimens that do not have any post-test services available with them.  These SRMs provide a lower cost option for the Self-Service user.  SRMs 2093 and 2097 are to be tested at -40° C; These SRMs are not returned to NIST Boulder for evaluation. SRMs 2112 and 2113 are NIST-Verification Charpy V-notch specimens that are certified for absorbed energy at two test temperatures and are also certified for maximum force.  These SRMs provide a means to verify the performance of the energy and force scales of an instrumented Charpy impact machine at room temperature (21 °C).  They can also be used to verify just the energy scale of a machine at -40° C, interchangeably with SRMs 2092 and 2096.  Theses SRMs should be tested (broken) at the same time, then returned to NIST Boulder for evaluation. An acceptable machine will produce an average value within 1.4 J or 5% of the certified energy value, whichever is greater.  Currently formal bounds are not available to verify the performance of the force scale for a Charpy impact test machine. SRM 2115 is a NIST Izod specimen. Each SRM consists of a set of specimens needed to perform one evaluation. This SRM complies with ASTM Standard E23 dimensional requirements for the Izod (Cantilever Beam) impact specimen, Type D, geometry. PLEASE NOTE: The tables are presented to facilitate comparisons among a family of materials to help customers select the best SRM for their needs. For specific values and uncertainties, the certificate is the only official source. - Certified values are normal font - Reference values are italicized - Values in parentheses are for information only   货号 品名 包装 能量 2092 Low-Energy Charpy V-Notch Impact Specimen (NIST-Verification) 低能量夏比V型缺口冲击试样（NIST-验证） set 13 to 20 2093 Low Energy Charpy V-Notch Impact Specimen (Self- Verification) 低能量夏比V型缺口冲击试样（自我-验证） 5bar   2096 High-Energy Charpy V-Notch Impact Specimen (NIST-Verification) 高能量夏比V型缺口冲击试样（NIST-验证） set 88 to 133 2097 High Energy Charpy V Notch Impact Specimen (Self-Verification)  高能量夏比V型缺口冲击试样（自我-验证） 5bar   2098 SuperHigh-Energy Charpy V-Notch Impact Specimen (NIST-Verification) 超高能量夏比V型缺口冲击试样（NIST-验证） set 176 to 244 2112 Dynamic Impact Force Verific Specimens (Nominal 24kN) 动态冲击力Verific 试样（额定受力24千牛顿） set of four   2113 Dynamic Impact Force Verific, Specimens (Nominal 33kN) 动态冲击力Verific 试样（额定受力33千牛顿） set of four   2115 Low Energy Izod Impact Specimen (NIST-Verification) 低能量艾氏冲击试样（NIST-验证） Set 13 to 25

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