Tester Hardness Cross Reference 

Material            Dial Reading            SAECO            Brinell

Pure Lead*        .020-.030                0                       5

40-1                  .045-.050                5.5                    8.5

30-1                  .053-.056                6                       9

25-1                  .062-.065                6.25                  9.5

20-1                  .068-.070                6.5                    10

10-1                  .072-.074                6.75                  11.5

New WW**      .074-.076                7                       12.5 (est)

Aged WW**      .080-.083                8                      14  (est)

Lyman #2            .084-.086                8.5                   15

Linotype (old)      .086-.090                10                   22

Quenched WW# .090-.095                10.5                23-24

Mono/stereo type .095-.098                10.5-11.5       24-28

Heat treated #       .098+                        12+                32+

Small samples can "spread" giving distorted readings. On bullets, a 1/4" flat filed on the nose works best.  

*When checking pure lead, start the reading as soon as the point touches.  On pure lead, the reading must be taken very quickly.

** WW (wheel wts) vary in composition and your results may vary slightly.  The new WW reading was taken at 1 day and the old was taken after several months.

# Quenched and heat treated will vary a lot depending on your methods.  These are only rough estimates based on what I did. Quenched depends on how fast they are dropped out and water temp.  Heat treated has many variables.

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