Hardness Contrast Table-Advantage-青岛泛易精密五金有限公司-螺母,螺栓,螺钉

According to the German standard DIN50150, the following tables are used to compare the tensile strength with Vickers hardness, Brinell hardness and Rockwell hardness.

If you want to check the tensile strength > 1000N/mm2, or Vickers hardness > 310HV, or Brinell hardness > 300HB, or Rockwell hardness > 32HRC.

Tensile strength Rm N/mm²	Vickers hardness HV	Brinell hardness HB	Rockwell hardness HRC
250	80	76.0	-
270	85	80.7	-
285	90	85.2	-
305	95	90.2	-
320	100	95.0	-
335	105	99.8	-
350	110	105	-
370	115	109	-
380	120	114	-
400	125	119	-
415	130	124	-
430	135	128	-
450	140	133	-
465	145	138	-
480	150	143	-
490	155	147	-
510	160	152	-
530	165	156	-
545	170	162	-
560	175	166	-
575	180	171	-
595	185	176	-
610	190	181	-
625	195	185	-
640	200	190	-
660	205	195	-
675	210	199	-
690	215	204	-
705	220	209	-
720	225	214	-
740	230	219	-
755	235	223	-
770	240	228	20.3
785	245	233	21.3
800	250	238	22.2
820	255	242	23.1
835	260	247	24.0
850	265	252	24.8
865	270	257	25.6
880	275	261	26.4
900	280	266	27.1
915	285	271	27.8
930	290	276	28.5
950	295	280	29.2
965	300	285	29.8
995	310	295	31.0

Hardness test is the simplest and easiest test method in mechanical performance test. In order to replace some mechanical properties tests with hardness tests, a more accurate conversion relationship between hardness and strength is needed in production.

Practice has proved that there is an approximate relationship between hardness and strength of metal materials. Because the hardness value is determined by the initial plastic deformation resistance and the continuing plastic deformation resistance, the higher the strength of the material, the higher the plastic deformation resistance, the higher the hardness value.

Hardness Contrast Table

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