302.1 - Microindentation Hardness (block form)

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.

SRM Status Description Unit of Issue

Hardness, nominal (kgf/mm2)

Load (Newtons)
1893
Now Selling Copper Microhardness Test Block (Knoop) each 125 0.245, 0.490, 0.981
1894a
Now Selling Vickers Microhardness of Copper each 125 0.245, 0.490, 0.981
1895
Now Selling Nickel Microhardness Test Block (Knoop) each 600 0.245, 0.490, 0.981
1896b
Out of Stock Vickers Microhardness of Nickel each 600 0.245, 0.490, 0.981
1905
Now Selling Nickel Microhardness Test Block (Knoop)  each 600 2.943
1906
Now Selling Nickel Microhardness Test Block (Knoop) each 600 4.905
1907
Now Selling Nickel Microhardness Test Block (Knoop) each 600 9.81
1908
Now Selling Vickers Microhardness of Nickel each 600 2.943
1909
Now Selling Vickers Microhardness of Nickel each 600 9.81
2798a
Now Selling Vickers Microhardness of Nickel each 600 4.905
2828
Now Selling Knoop Microhardness of Steel each 800 4.90
2829
Out of Stock Vickers Microhardness of Steel each 800 4.90
2830
Now Selling Knoop Hardness of Ceramics<br /> each 1500 19.6
2831
Now Selling Vickers Hardness of Ceramics and Hardmetals each 1530 9.8

- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only