These SRMs are for use in calibrating and checking the performance of microhardness testers and may be used in conjunction with ASTM E 384. SRMs 1893 through 1907 are 1.25 cm ´ 1.25 cm (SRM 2798 is 1.35 cm ´ 1.35 cm) and were made by electroforming the test metal on AISI 1010 steel substrate. SRMs 2830 and 2831 are intended to meet the needs of the structural, electronic and biomedical ceramics communities.
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
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|Description >>||Copper Microhardness Test Block (Knoop)||Vickers Microhardness of Copper||Nickel Microhardness Test Block (Knoop)||Vickers Microhardness of Nickel||Nickel Microhardness Test Block (Knoop)||Nickel Microhardness Test Block (Knoop)||Nickel Microhardness Test Block (Knoop)||Vickers Microhardness of Nickel||Vickers Microhardness of Nickel||Vickers Microhardness of Nickel||Knoop Microhardness of Steel||Vickers Microhardness of Steel||Knoop Hardness of Ceramics
||Vickers Hardness of Ceramics and Hardmetals|
|Unit of Issue >>||each||each||each||each||each||each||each||each||each||each||each||each||each||each|
Hardness, nominal (kgf/mm2)
|Load (Newtons)||0.245, 0.490, 0.981||0.245, 0.490, 0.981||0.245, 0.490, 0.981||0.245, 0.490, 0.981||2.943||4.905||9.81||2.943||9.81||4.905||4.90||4.90||19.6||9.8|