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硬　　度　　換　　算　　表
HARDNESS CONVERSION TABLES

HRC	HV	HBS	HBW	HRA	HRB	HRD	HR15N	HR30N	HR45N	HS	HLD	HLE	MPa	HRC
150kgf		標準球		60kgf	1/16"球 100kgf	100kgf	15kgf	30kgf	45kgf					150kgf
68	940	-	-	85.6	-	76.9	93.2	84.4	75.4	98.0	886	851	-	68
67	900	-	-	85.0	-	76.1	92.9	83.6	74.2	95.6	873	839	-	67
66	865	-	-	84.5	-	75.4	92.5	82.8	73.3	93.4	862	829	-	66
65	832	-	(739)	83.9	-	74.5	92.2	81.9	72.0	91.2	852	819	-	65
64	800	-	(722)	83.4	-	73.8	91.8	81.1	71.0	89.0	843	809	-	64
63	772	-	(705)	82.8	-	73.0	91.4	80.1	69.9	87.1	834	799	-	63
62	746	-	(688)	82.3	-	72.2	91.1	79.3	68.8	85.2	824	790	-	62
61	720	-	(670)	81.8	-	71.5	90.7	78.4	67.7	83.3	814	780	-	61
60	697	-	(654)	81.2	-	70.7	90.2	77.5	66.6	81.5	805	770	-	60
59	674	-	(634)	80.7	-	69.9	89.8	76.6	65.5	79.7	795	760	-	59
58	653	-	615	80.1	-	69.2	89.3	75.7	64.3	78.1	786	750	-	58
57	633	-	595	79.6	-	68.5	88.9	74.8	63.2	76.4	776	741	-	57
56	613	-	577	79.0	-	67.7	88.3	73.9	62.0	74.8	767	731	-	56
55	595	-	560	78.5	-	66.9	87.9	73.0	60.9	73.2	758	722	2075	55
54	577	-	543	78.0	-	66.1	87.4	72.0	59.8	71.7	749	713	2015	54
53	560	-	525	77.4	-	65.4	86.9	71.2	58.6	70.2	741	704	1950	53
52	544	(500)	512	76.8	-	64.6	86.4	70.2	57.4	68.8	732	695	1880	52
51	528	(487)	496	76.3	-	63.8	85.9	69.4	56.1	67.3	724	687	1820	51
50	513	(475)	481	75.9	-	63.1	85.5	68.5	55.0	65.9	716	678	1760	50
49	498	(464)	469	75.2	-	62.1	85.0	67.6	53.8	64.5	708	670	1695	49
48	484	451	455	74.7	-	61.4	84.5	66.7	52.5	63.1	700	662	1635	48
47	471	442	443	74.1	-	60.8	83.9	65.8	51.4	61.9	693	655	1580	47
46	458	432	432	73.6	-	60.0	83.5	64.8	50.3	60.6	685	648	1530	46
45	446	421	421	73.1	-	59.2	83.0	64.0	49.0	59.4	678	641	1480	45
44	434	409	409	72.5	-	58.5	82.5	63.1	47.8	58.2	671	634	1435	44
43	423	400	400	72.0	-	57.7	82.0	62.2	46.7	57.1	664	628	1385	43
42	412	390	390	71.5	-	56.9	81.5	61.3	45.5	55.9	657	621	1340	42
41	402	381	381	70.9	-	56.2	80.9	60.4	44.3	54.9	650	616	1295	41
40	392	371	371	70.4	-	55.4	80.4	59.5	43.1	53.8	644	610	1250	40
39	382	362	362	69.9	-	54.6	79.9	58.6	41.9	52.7	637	603	1215	39
38	372	353	353	69.4	-	53.8	79.4	57.7	40.8	51.6	629	597	1180	38
37	363	344	344	68.9	-	53.1	78.8	56.8	39.6	50.6	623	592	1160	37
36	354	336	336	68.4	(109.0)	52.3	78.3	55.9	38.4	49.6	616	586	1115	36
35	345	327	327	67.9	(108.5)	51.5	77.7	55.0	37.2	48.6	609	580	1080	35
34	336	319	319	67.4	(108.0)	50.8	77.2	54.2	36.1	47.6	602	574	1055	34
33	327	311	311	66.8	(107.5)	50.0	76.6	53.3	34.9	46.6	595	568	1025	33
32	318	301	301	66.3	(107.0)	49.2	76.1	52.1	33.7	45.5	587	562	1000	32
31	310	294	294	65.8	(106.0)	48.4	75.6	51.3	32.5	44.6	581	556	980	31
30	302	286	286	65.3	(105.5)	47.7	75.0	50.4	31.3	43.6	574	550	950	30
29	294	279	279	64.7	(104.5)	47.0	74.5	49.5	30.1	42.7	567	544	930	29
28	286	271	271	64.3	(104.0)	46.1	73.9	48.6	28.9	41.7	559	538	910	28
27	279	264	264	63.8	(103.0)	45.2	73.3	47.7	27.8	40.9	553	532	880	27
26	272	258	258	63.3	(102.5)	44.6	72.8	46.8	26.7	40.0	547	526	860	26
25	266	253	253	62.8	(101.5)	43.8	72.2	45.9	25.5	39.3	541	521	840	25
24	260	247	247	62.4	(101.0)	43.1	71.6	45.0	24.3	38.5	535	516	825	24
23	254	243	243	62.0	100.0	42.1	71.0	44.0	23.1	37.7	530	511	805	23
22	248	237	237	61.5	99.0	41.6	70.5	43.2	22.0	37.0	524	505	785	22
21	243	231	231	61.0	98.5	40.9	69.9	42.3	20.7	36.4	519	500	770	21
20	238	226	226	60.5	97.8	40.1	69.4	41.5	19.6	35.7	514	496	760	20
(18)	230	219	219	-	96.7	-	-	-	-	34.7	506	488	730	(18)
(16)	222	212	212	-	95.5	-	-	-	-	33.6	498	479	705	(16)
(14)	213	203	203	-	93.9	-	-	-	-	32.4	488	470	675	(14)
(12)	204	194	194	-	92.3	-	-	-	-	31.2	478	459	650	(12)
(10)	196	187	187	-	90.7	-	-	-	-	30.2	470	450	620	(10)
(8)	188	179	179	-	89.5	-	-	-	-	-	-	-	600	(8)
(6)	180	171	171	-	87.1	-	-	-	-	-	-	-	580	(6)
(4)	173	165	165	-	85.5	-	-	-	-	-	-	-	550	(4)
(2)	166	158	158	-	83.5	-	-	-	-	-	-	-	530	(2)
(0)	160	152	152	-	81.7	-	-	-	-	-	-	-	515	(0)