Performance Alloys, Hardness Comparison Tables

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Performance Alloys®

...World Wide Distributor of Beryllium-Free Copper Alloys...
Manufacturer of Standard & Custom Components

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Hardness Conversion Table

based on ASTM 140 & ASM Vol. 11 Reference Table

Brinell (3000kg. Load)	Rockwell "C" Scale	Rockwell "B" Scale
352	37.9	110.0
341	36.6	109.0
331	35.5	108.5
321	34.3	108.0
311	33.1	107.5
302	32.1	107.0
293	30.9	106.0
285	29.9	105.5
277	28.8	104.5
269	27.6	104.0
262	26.6	103.0
255	25.4	102.0
248	24.2	101.0
241	22.8	100.0
235	21.7	99.0
229	20.6	98.2
223	18.8	97.2
217	17.5	96.4
212	16.0	95.5

To insure accuaracy of all tests, Standardized Load and Penetrator requirements must be used for type of test along with applying the equipment manufacturers recommended "correction factors" for testing rounds bars.

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While the information contained is deemed reliable, no warranties are expressed or implied. For specific information regarding an application please call 1-800-272-3031 or e-mail us at sales@moldstar.com