Our Quality Control Department establishes standards for all tungsten carbide grades. Control checks are performed at each operation. Chemical analysis and grain size are checked to assure that all products conform to standards. Test pieces are made to determine physical properties: hardness, transverse rupture strength and density. Fractured and polished surfaces are examined micrographically, and test results of each lot are recorded. Certifications of test results are available.

NOMINAL PROPERTIES

GRADE	GRAIN STRUCTURE	COBALT %	HARDNESS Ra	DENSITY g/cc	TRS (avg) 1000 psi	HARDNESS HV30
HC UF08	Ultra Fine	8	93.5	14.6	500	1820
HC UF10	Ultra Fine	10	93	14.4	550	1750
HC UF12	Ultra Fine	12.0	92.5	14.2	600	1680
HC US06	sub-micron	6.00	93.0	14.85	350	1750
Ramet I	sub-micron	10.0	92.2	14.45	450	1640
HC US10	sub-micron	10.0	92.2	14.45	450	1640
HC US11	sub-micron	11.0	91.7	14.4	460	1580
HC US15	sub-micron	14.0	90.5	14.1	475	1440
HC US16	sub-micron	16.0	90.8	13.85	550	1470
HC 200	Fine	3.0	93.0	15.23	275	1750
HC 290	Fine	6.0	91.8	14.95	340	1590
HC 292	Fine	6.0	92.2	15.02	350	1640
HC 400	Fine	9.0	91.3	14.62	365	1530
HC 410	Fine	11.5	90.5	14.37	400	1440
HC 500	Fine	13.0	90.0	14.22	410	1380
HC 550	Fine	14.0	89.5	14.12	405	1330
HC 600	Fine	15.0	89.0	14.02	425	1280
HC 291	medium	6.0	91.2	14.92	310	1520
HC 510	medium	11.5	89.8	14.37	350	1360
HC 509	medium	12.0	89.0	14.32	425	1280
HC M112	medium	13.0	88.5	14.22	450	1230
HC 700	medium	19.0	85.2	13.62	440	950
HC M105	Coarse	10.0	88.2	14.52	400	1200
HC M155	Coarse	15.5	86.3	13.97	420	1030
HC 800	Coarse	23.0	83.5	13.25	430	830