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硬度の換算(近似値) HOME 技術資料室 材質試験
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硬度の測定方法には色々な方法がありますが、同じものを色々な方法で測定した場合、各測定値には当然一定の関係があります。但し、測定される物質の形状や性質によって必ずしも常に同じ傾向が出るとは限りません。したがって下記の表はこれら測定値の近似値です。
右図はロックウェルB(HRB)の測定方法で、鋼板の硬度測定には標準的に使用されます。
ビッカース |
ブリネル |
ロックウェル |
ショア |
抗張力 |
HRB |
HR30T |
HR15T |
MPa |
250 |
|
99.5 |
|
|
36 |
795 |
240 |
|
98.1 |
|
|
34 |
765 |
230 |
|
96.7 |
|
|
33 |
730 |
220 |
|
95.0 |
|
|
32 |
695 |
210 |
|
93.4 |
|
|
30 |
670 |
200 |
|
91.5 |
|
|
29 |
635 |
196 |
169 |
93.5 |
77.5 |
90.5 |
|
|
192 |
166 |
93.0 |
77.0 |
|
|
|
190 |
164 |
92.5 |
76.5 |
|
28 |
605 |
188 |
162 |
92.0 |
|
|
|
|
186 |
161 |
91.5 |
76.0 |
90.0 |
|
|
184 |
159 |
|
75.5 |
89.5 |
|
|
182 |
157 |
90.5 |
|
|
|
|
180 |
156 |
90.0 |
75.0 |
|
26 |
600 |
178 |
154 |
89.0 |
74.5 |
89.0 |
|
|
176 |
160 |
88.5 |
|
|
|
|
174 |
150 |
88.0 |
|
|
|
|
172 |
149 |
87.5 |
73.5 |
|
|
|
170 |
147 |
87.0 |
|
|
25 |
545 |
168 |
146 |
86.0 |
73.0 |
88.0 |
|
|
166 |
144 |
85.5 |
72.5 |
|
|
|
164 |
142 |
85.0 |
72.0 |
|
|
|
162 |
141 |
84.0 |
|
|
|
|
160 |
139 |
83.5 |
71.5 |
|
24 |
515 |
160 |
138 |
83.0 |
71.0 |
87.0 |
|
|
156 |
136 |
82.0 |
70.5 |
|
|
|
154 |
135 |
81.5 |
70.0 |
86.5 |
|
|
160 |
133 |
80.5 |
|
|
|
|
150 |
131 |
80.0 |
69.5 |
|
22 |
490 |
148 |
129 |
79.0 |
69.0 |
86.0 |
|
|
146 |
128 |
78.0 |
68.5 |
|
|
|
144 |
126 |
77.5 |
68.0 |
85.5 |
|
|
142 |
124 |
77.0 |
67.5 |
|
|
|
140 |
122 |
76.0 |
67.0 |
85.0 |
21 |
455 |
138 |
121 |
75.0 |
66.5 |
|
|
|
136 |
120 |
74.5 |
66.0 |
84.5 |
|
|
134 |
118 |
73.5 |
65.5 |
|
|
|
132 |
116 |
73.0 |
65.0 |
84.0 |
|
|
130 |
114 |
71.2 |
64.5 |
|
20 |
425 |
128 |
113 |
71.0 |
63.5 |
63.5 |
|
|
126 |
112 |
70.0 |
63.0 |
|
|
|
124 |
110 |
69.0 |
62.5 |
83.0 |
|
|
122 |
108 |
68.0 |
62.0 |
|
|
|
120 |
106 |
67.0 |
61.0 |
|
|
390 |
118 |
105 |
66.0 |
60.5 |
82.0 |
|
|
116 |
103 |
65.0 |
60.0 |
|
|
|
114 |
101 |
64.0 |
59.5 |
81.5 |
|
|
112 |
99 |
63.0 |
60.5 |
81.0 |
|
|
110 |
97 |
62.0 |
60.0 |
|
|
|
108 |
95 |
61.0 |
57.0 |
80.5 |
|
|
106 |
94 |
59.5 |
56.0 |
80.0 |
|
|
104 |
92 |
60.0 |
55.0 |
79.5 |
|
|
102 |
90 |
57.0 |
54.5 |
|
|
|
100 |
88 |
56.0 |
53.5 |
|
|
|
98 |
86 |
54.0 |
60.5 |
|
|
|
96 |
85 |
53.0 |
51.5 |
78.0 |
|
|
94 |
83 |
51.0 |
50.5 |
|
|
|
92 |
82 |
49.5 |
49.0 |
76.5 |
|
|
90 |
80 |
47.5 |
48.0 |
|
|
|
88 |
79 |
46.0 |
47.0 |
75.5 |
|
|
86 |
77 |
44.0 |
45.5 |
75.0 |
|
|
84 |
76 |
42.0 |
44.0 |
|
|
|
82 |
74 |
40.0 |
43.0 |
|
|
|
80 |
72 |
37.5 |
41.0 |
|
|
|
78 |
70 |
35.0 |
39.5 |
|
|
|
76 |
68 |
32.5 |
38.0 |
|
|
|
74 |
66 |
30.0 |
36.0 |
|
|
|
72 |
64 |
27.5 |
34.0 |
|
|
|
70 |
63 |
24.5 |
32.0 |
|
|
|
68 |
62 |
21.5 |
30.0 |
|
|
|
66 |
61 |
18.5 |
28.0 |
|
|
|
64 |
59 |
15.5 |
25.5 |
|
|
|
62 |
57 |
12.5 |
23.0 |
|
|
|
60 |
55 |
10.0 |
20.5 |
|
|
|
60 |
53 |
|
18.0 |
|
|
|
56 |
60 |
|
15.0 |
|
|
|
54 |
50 |
|
12.0 |
|
|
|
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