この規格ページの目次
24
Z 2251-2 : 2020 (ISO 4545-4 : 2017)
表1−硬さ値表(続き)
試験力
N
対角線長さ 0.009 0.019 0.049 0.098 0.196 0.245 0.490 0.980
9.807
1.961 3 2.942 0 4.903 3 19.613
d 807 61 03 07 13 17 33 7
mm ヌープ硬さ
HK HK HK HK HK HK HK HK HK HK HK HK HK
0.001 0.002 0.005 0.01 0.02 0.025 0.05 0.1 0.2 0.3 0.5 1 2
0.152 0 0.62 1.23 3.08 6.16 12.32 15.40 30.79 61.59 123.2 184.8 307.9 615.9 1 232
0.152 2 0.61 1.23 3.07 6.14 12.28 15.36 30.71 61.42 122.8 184.3 307.1 614.2 1 228
0.152 4 0.61 1.23 3.06 6.13 12.25 15.32 30.63 61.26 122.5 183.8 306.3 612.6 1 225
0.152 6 0.61 1.22 3.06 6.11 12.22 15.28 30.55 61.10 122.2 183.3 305.5 611.0 1 222
0.152 8 0.61 1.22 3.05 6.09 12.19 15.24 30.47 60.94 121.9 182.8 304.7 609.4 1 219
0.153 0 0.61 1.22 3.04 6.08 12.16 15.20 30.39 60.78 121.6 182.4 303.9 607.8 1 216
0.153 2 0.61 1.21 3.03 6.06 12.12 15.16 30.31 60.62 121.2 181.9 303.1 606.2 1 212
0.153 4 0.60 1.21 3.02 6.05 12.09 15.12 30.23 60.47 120.9 181.4 302.3 604.7 1 209
0.153 6 0.60 1.21 3.02 6.03 12.06 15.08 30.15 60.31 120.6 180.9 301.5 603.1 1 206
0.153 8 0.60 1.20 3.01 6.02 12.03 15.04 30.08 60.15 120.3 180.5 300.8 601.5 1 203
0.154 0 0.60 1.20 3.00 6.00 12.00 15.00 30.00 60.00 120.0 180.0 300.0 600.0 1 200
0.154 2 0.60 1.20 2.99 5.98 11.97 14.96 29.92 59.84 119.7 179.5 299.2 598.4 1 197
0.154 4 0.60 1.19 2.98 5.97 11.94 14.92 29.84 59.69 119.4 179.1 298.4 596.9 1 194
0.154 6 0.60 1.19 2.98 5.95 11.91 14.88 29.77 59.53 119.1 178.6 297.7 595.3 1 191
0.154 8 0.59 1.19 2.97 5.94 11.88 14.84 29.69 59.38 118.8 178.1 296.9 593.8 1 188
0.155 0 0.59 1.18 2.96 5.92 11.84 14.81 29.61 59.22 118.4 177.7 296.1 592.2 1 184
0.155 2 0.59 1.18 2.95 5.91 11.81 14.77 29.54 59.07 118.1 177.2 295.4 590.7 1 181
0.155 4 0.59 1.18 2.95 5.89 11.78 14.73 29.46 58.92 117.8 176.8 294.6 589.2 1 178
0.155 6 0.59 1.18 2.94 5.88 11.75 14.69 29.38 58.77 117.5 176.3 293.8 587.7 1 175
0.155 8 0.59 1.17 2.93 5.86 11.72 14.65 29.31 58.62 117.2 175.9 293.1 586.2 1 172
0.156 0 0.58 1.17 2.92 5.85 11.69 14.62 29.23 58.47 116.9 175.4 292.3 584.7 1 169
0.156 2 0.58 1.17 2.92 5.83 11.66 14.58 29.16 58.32 116.6 175.0 291.6 583.2 1 166
0.156 4 0.58 1.16 2.91 5.82 11.63 14.54 29.08 58.17 116.3 174.5 290.8 581.7 1 163
0.156 6 0.58 1.16 2.90 5.80 11.60 14.51 29.01 58.02 116.0 174.1 290.1 580.2 1 160
0.156 8 0.58 1.16 2.89 5.79 11.57 14.47 28.94 57.87 115.7 173.6 289.4 578.7 1 157
0.157 0 0.58 1.15 2.89 5.77 11.55 14.43 28.86 57.73 115.5 173.2 288.6 577.3 1 155
0.157 2 0.58 1.15 2.88 5.76 11.52 14.39 28.79 57.58 115.2 172.7 287.9 575.8 1 152
0.157 4 0.57 1.15 2.87 5.74 11.49 14.36 28.72 57.43 114.9 172.3 287.2 574.3 1 149
0.157 6 0.57 1.15 2.86 5.73 11.46 14.32 28.64 57.29 114.6 171.9 286.4 572.9 1 146
0.157 8 0.57 1.14 2.86 5.71 11.43 14.29 28.57 57.14 114.3 171.4 285.7 571.4 1 143
――――― [JIS Z 2251-2 pdf 26] ―――――
25
Z 2251-2 : 2020 (ISO 4545-4 : 2017)
表1−硬さ値表(続き)
試験力
N
対角線長さ 0.009 0.019 0.049 0.098 0.196 0.245 0.490 0.980
9.807
1.961 3 2.942 0 4.903 3 19.613
d 807 61 03 07 13 17 33 7
mm ヌープ硬さ
HK HK HK HK HK HK HK HK HK HK HK HK HK
0.001 0.002 0.005 0.01 0.02 0.025 0.05 0.1 0.2 0.3 0.5 1 2
0.158 0 0.57 1.14 2.85 5.70 11.40 14.25 28.50 57.00 114.0 171.0 285.0 570.0 1 140
0.158 2 0.57 1.14 2.84 5.69 11.37 14.21 28.43 56.85 113.7 170.6 284.3 568.5 1 137
0.158 4 0.57 1.13 2.84 5.67 11.34 14.18 28.35 56.71 113.4 170.1 283.5 567.1 1 134
0.158 6 0.57 1.13 2.83 5.66 11.31 14.14 28.28 56.57 113.1 169.7 282.8 565.7 1 131
0.158 8 0.56 1.13 2.82 5.64 11.28 14.11 28.21 56.42 112.8 169.3 282.1 564.2 1 128
0.159 0 0.56 1.13 2.81 5.63 11.26 14.07 28.14 56.28 112.6 168.8 281.4 562.8 1 126
0.159 2 0.56 1.12 2.81 5.61 11.23 14.04 28.07 56.14 112.3 168.4 280.7 561.4 1 123
0.159 4 0.56 1.12 2.80 5.60 11.20 14.00 28.00 56.00 112.0 168.0 280.0 560.0 1 120
0.159 6 0.56 1.12 2.79 5.59 11.17 13.97 27.93 55.86 111.7 167.6 279.3 558.6 1 117
0.159 8 0.56 1.11 2.79 5.57 11.14 13.93 27.86 55.72 111.4 167.2 278.6 557.2 1 114
0.160 0 0.56 1.11 2.78 5.56 11.12 13.90 27.79 55.58 111.2 166.7 277.9 555.8 1 112
0.160 2 0.55 1.11 2.77 5.54 11.09 13.86 27.72 55.44 110.9 166.3 277.2 554.4 1 109
0.160 4 0.55 1.11 2.77 5.53 11.06 13.83 27.65 55.30 110.6 165.9 276.5 553.0 1 106
0.160 6 0.55 1.10 2.76 5.52 11.03 13.79 27.58 55.17 110.3 165.5 275.8 551.7 1 103
0.160 8 0.55 1.10 2.75 5.50 11.01 13.76 27.51 55.03 110.1 165.1 275.1 550.3 1 101
0.161 0 0.55 1.10 2.74 5.49 10.98 13.72 27.45 54.89 109.8 164.7 274.5 548.9 1 098
0.161 2 0.55 1.10 2.74 5.48 10.95 13.69 27.38 54.76 109.5 164.3 273.8 547.6 1 095
0.161 4 0.55 1.09 2.73 5.46 10.92 13.66 27.31 54.62 109.2 163.9 273.1 546.2 1 092
0.161 6 0.54 1.09 2.72 5.45 10.90 13.62 27.24 54.49 109.0 163.5 272.4 544.9 1 090
0.161 8 0.54 1.09 2.72 5.44 10.87 13.59 27.18 54.35 108.7 163.1 271.8 543.5 1 087
0.162 0 0.54 1.08 2.71 5.42 10.84 13.55 27.11 54.22 108.4 162.7 271.1 542.2 1 084
0.162 2 0.54 1.08 2.70 5.41 10.82 13.52 27.04 54.08 108.2 162.3 270.4 540.8 1 082
0.162 4 0.54 1.08 2.70 5.40 10.79 13.49 26.98 53.95 107.9 161.9 269.8 539.5 1 079
0.162 6 0.54 1.08 2.69 5.38 10.76 13.45 26.91 53.82 107.6 161.5 269.1 538.2 1 076
0.162 8 0.54 1.07 2.68 5.37 10.74 13.42 26.84 53.69 107.4 161.1 268.4 536.9 1 074
0.163 0 0.54 1.07 2.68 5.36 10.71 13.39 26.78 53.55 107.1 160.7 267.8 535.5 1 071
0.163 2 0.53 1.07 2.67 5.34 10.68 13.36 26.71 53.42 106.8 160.3 267.1 534.2 1 068
0.163 4 0.53 1.07 2.66 5.33 10.66 13.32 26.65 53.29 106.6 159.9 266.5 532.9 1 066
0.163 6 0.53 1.06 2.66 5.32 10.63 13.29 26.58 53.16 106.3 159.5 265.8 531.6 1 063
0.163 8 0.53 1.06 2.65 5.30 10.61 13.26 26.52 53.03 106.1 159.1 265.2 530.3 1 061
――――― [JIS Z 2251-2 pdf 27] ―――――
26
Z 2251-2 : 2020 (ISO 4545-4 : 2017)
表1−硬さ値表(続き)
試験力
N
対角線長さ 0.009 0.019 0.049 0.098 0.196 0.245 0.490 0.980
9.807
1.961 3 2.942 0 4.903 3 19.613
d 807 61 03 07 13 17 33 7
mm ヌープ硬さ
HK HK HK HK HK HK HK HK HK HK HK HK HK
0.001 0.002 0.005 0.01 0.02 0.025 0.05 0.1 0.2 0.3 0.5 1 2
0.164 0 0.53 1.06 2.65 5.29 10.58 13.23 26.45 52.90 105.8 158.7 264.5 529.0 1 058
0.164 2 0.53 1.06 2.64 5.28 10.55 13.19 26.39 52.77 105.5 158.3 263.9 527.7 1 055
0.164 4 0.53 1.05 2.63 5.26 10.53 13.16 26.32 52.65 105.3 157.9 263.2 526.5 1 053
0.164 6 0.53 1.05 2.63 5.25 10.50 13.13 26.26 52.52 105.0 157.6 262.6 525.2 1 050
0.164 8 0.52 1.05 2.62 5.24 10.48 13.10 26.20 52.39 104.8 157.2 262.0 523.9 1 048
0.165 0 0.52 1.05 2.61 5.23 10.45 13.07 26.13 52.26 104.5 156.8 261.3 522.6 1 045
0.165 2 0.52 1.04 2.61 5.21 10.43 13.03 26.07 52.14 104.3 156.4 260.7 521.4 1 043
0.165 4 0.52 1.04 2.60 5.20 10.40 13.00 26.01 52.01 104.0 156.0 260.1 520.1 1 040
0.165 6 0.52 1.04 2.59 5.19 10.38 12.97 25.94 51.89 103.8 155.7 259.4 518.9 1 038
0.165 8 0.52 1.04 2.59 5.18 10.35 12.94 25.88 51.76 103.5 155.3 258.8 517.6 1 035
0.166 0 0.52 1.03 2.58 5.16 10.33 12.91 25.82 51.64 103.3 154.9 258.2 516.4 1 033
0.166 2 0.52 1.03 2.58 5.15 10.30 12.88 25.76 51.51 103.0 154.5 257.6 515.1 1 030
0.166 4 0.51 1.03 2.57 5.14 10.28 12.85 25.69 51.39 102.8 154.2 256.9 513.9 1 028
0.166 6 0.51 1.03 2.56 5.13 10.25 12.82 25.63 51.26 102.5 153.8 256.3 512.6 1 025
0.166 8 0.51 1.02 2.56 5.11 10.23 12.79 25.57 51.14 102.3 153.4 255.7 511.4 1 023
0.167 0 0.51 1.02 2.55 5.10 10.20 12.75 25.51 51.02 102.0 153.1 255.1 510.2 1 020
0.167 2 0.51 1.02 2.54 5.09 10.18 12.72 25.45 50.90 101.8 152.7 254.5 509.0 1 018
0.167 4 0.51 1.02 2.54 5.08 10.16 12.69 25.39 50.78 101.6 152.3 253.9 507.8 1 016
0.167 6 0.51 1.01 2.53 5.07 10.13 12.66 25.33 50.65 101.3 152.0 253.3 506.5 1 013
0.167 8 0.51 1.01 2.53 5.05 10.11 12.63 25.27 50.53 101.1 151.6 252.7 505.3 1 011
0.168 0 0.50 1.01 2.52 5.04 10.08 12.60 25.21 50.41 100.8 151.2 252.1 504.1 1 008
0.168 2 0.50 1.01 2.51 5.03 10.06 12.57 25.15 50.29 100.6 150.9 251.5 502.9 1 006
0.168 4 0.50 1.00 2.51 5.02 10.03 12.54 25.09 50.17 100.3 150.5 250.9 501.7 1 003
0.168 6 0.50 1.00 2.50 5.01 10.01 12.51 25.03 50.06 100.1 150.2 250.3 500.6 1 001
0.168 8 0.50 1.00 2.50 4.99 9.99 12.48 24.97 49.94 99.87 149.8 249.7 499.4 998.7
0.169 0 0.50 1.00 2.49 4.98 9.96 12.45 24.91 49.82 99.64 149.5 249.1 498.2 996.4
0.169 2 0.50 0.99 2.49 4.97 9.94 12.43 24.85 49.70 99.40 149.1 248.5 497.0 994.0
0.169 4 0.50 0.99 2.48 4.96 9.92 12.40 24.79 49.58 99.17 148.8 247.9 495.8 991.7
0.169 6 0.49 0.99 2.47 4.95 9.89 12.37 24.73 49.47 98.93 148.4 247.3 494.7 989.3
0.169 8 0.49 0.99 2.47 4.94 9.87 12.34 24.68 49.35 98.70 148.1 246.8 493.5 987.0
――――― [JIS Z 2251-2 pdf 28] ―――――
27
Z 2251-2 : 2020 (ISO 4545-4 : 2017)
表1−硬さ値表(続き)
試験力
N
対角線長さ 0.009 0.019 0.049 0.098 0.196 0.245 0.490 0.980
9.807
1.961 3 2.942 0 4.903 3 19.613
d 807 61 03 07 13 17 33 7
mm ヌープ硬さ
HK HK HK HK HK HK HK HK HK HK HK HK HK
0.001 0.002 0.005 0.01 0.02 0.025 0.05 0.1 0.2 0.3 0.5 1 2
0.170 0 0.49 0.98 2.46 4.92 9.85 12.31 24.62 49.23 98.47 147.7 246.2 492.3 984.7
0.170 2 0.49 0.98 2.46 4.91 9.82 12.28 24.56 49.12 98.24 147.4 245.6 491.2 982.4
0.170 4 0.49 0.98 2.45 4.90 9.80 12.25 24.50 49.00 98.01 147.0 245.0 490.0 980.1
0.170 6 0.49 0.98 2.44 4.89 9.78 12.22 24.44 48.89 97.78 146.7 244.4 488.9 977.8
0.170 8 0.49 0.98 2.44 4.88 9.75 12.19 24.39 48.77 97.55 146.3 243.9 487.7 975.5
0.171 0 0.49 0.97 2.43 4.87 9.73 12.17 24.33 48.66 97.32 146.0 243.3 486.6 973.2
0.171 2 0.49 0.97 2.43 4.85 9.71 12.14 24.27 48.55 97.09 145.6 242.7 485.5 970.9
0.171 4 0.48 0.97 2.42 4.84 9.69 12.11 24.22 48.43 96.87 145.3 242.2 484.3 968.7
0.171 6 0.48 0.97 2.42 4.83 9.66 12.08 24.16 48.32 96.64 145.0 241.6 483.2 966.4
0.171 8 0.48 0.96 2.41 4.82 9.64 12.05 24.10 48.21 96.42 144.6 241.0 482.1 964.2
0.172 0 0.48 0.96 2.40 4.81 9.62 12.02 24.05 48.10 96.19 144.3 240.5 481.0 961.9
0.172 2 0.48 0.96 2.40 4.80 9.60 12.00 23.99 47.98 95.97 144.0 239.9 479.8 959.7
0.172 4 0.48 0.96 2.39 4.79 9.57 11.97 23.94 47.87 95.75 143.6 239.4 478.7 957.5
0.172 6 0.48 0.96 2.39 4.78 9.55 11.94 23.88 47.76 95.52 143.3 238.8 477.6 955.2
0.172 8 0.48 0.95 2.38 4.77 9.53 11.91 23.83 47.65 95.30 143.0 238.3 476.5 953.0
0.173 0 0.48 0.95 2.38 4.75 9.51 11.89 23.77 47.54 95.08 142.6 237.7 475.4 950.8
0.173 2 0.47 0.95 2.37 4.74 9.49 11.86 23.72 47.43 94.86 142.3 237.2 474.3 948.6
0.173 4 0.47 0.95 2.37 4.73 9.46 11.83 23.66 47.32 94.65 142.0 236.6 473.2 946.5
0.173 6 0.47 0.94 2.36 4.72 9.44 11.80 23.61 47.21 94.43 141.6 236.1 472.1 944.3
0.173 8 0.47 0.94 2.36 4.71 9.42 11.78 23.55 47.11 94.21 141.3 235.5 471.1 942.1
0.174 0 0.47 0.94 2.35 4.70 9.40 11.75 23.50 47.00 93.99 141.0 235.0 470.0 939.9
0.174 2 0.47 0.94 2.34 4.69 9.38 11.72 23.44 46.89 93.78 140.7 234.4 468.9 937.8
0.174 4 0.47 0.94 2.34 4.68 9.36 11.70 23.39 46.78 93.56 140.3 233.9 467.8 935.6
0.174 6 0.47 0.93 2.33 4.67 9.33 11.67 23.34 46.67 93.35 140.0 233.4 466.7 933.5
0.174 8 0.47 0.93 2.33 4.66 9.31 11.64 23.28 46.57 93.14 139.7 232.8 465.7 931.4
0.175 0 0.46 0.93 2.32 4.65 9.29 11.62 23.23 46.46 92.92 139.4 232.3 464.6 929.2
0.175 2 0.46 0.93 2.32 4.64 9.27 11.59 23.18 46.36 92.71 139.1 231.8 463.6 927.1
0.175 4 0.46 0.92 2.31 4.62 9.25 11.56 23.12 46.25 92.50 138.7 231.2 462.5 925.0
0.175 6 0.46 0.92 2.31 4.61 9.23 11.54 23.07 46.14 92.29 138.4 230.7 461.4 922.9
0.175 8 0.46 0.92 2.30 4.60 9.21 11.51 23.02 46.04 92.08 138.1 230.2 460.4 920.8
――――― [JIS Z 2251-2 pdf 29] ―――――
28
Z 2251-2 : 2020 (ISO 4545-4 : 2017)
表1−硬さ値表(続き)
試験力
N
対角線長さ 0.009 0.019 0.049 0.098 0.196 0.245 0.490 0.980
9.807
1.961 3 2.942 0 4.903 3 19.613
d 807 61 03 07 13 17 33 7
mm ヌープ硬さ
HK HK HK HK HK HK HK HK HK HK HK HK HK
0.001 0.002 0.005 0.01 0.02 0.025 0.05 0.1 0.2 0.3 0.5 1 2
0.176 0 0.46 0.92 2.30 4.59 9.19 11.48 22.97 45.93 91.87 137.8 229.7 459.3 918.7
0.176 2 0.46 0.92 2.29 4.58 9.17 11.46 22.92 45.83 91.66 137.5 229.2 458.3 916.6
0.176 4 0.46 0.91 2.29 4.57 9.15 11.43 22.86 45.73 91.45 137.2 228.6 457.3 914.5
0.176 6 0.46 0.91 2.28 4.56 9.12 11.41 22.81 45.62 91.25 136.9 228.1 456.2 912.5
0.176 8 0.46 0.91 2.28 4.55 9.10 11.38 22.76 45.52 91.04 136.6 227.6 455.2 910.4
0.177 0 0.45 0.91 2.27 4.54 9.08 11.35 22.71 45.42 90.83 136.3 227.1 454.2 908.3
0.177 2 0.45 0.91 2.27 4.53 9.06 11.33 22.66 45.31 90.63 135.9 226.6 453.1 906.3
0.177 4 0.45 0.90 2.26 4.52 9.04 11.30 22.61 45.21 90.43 135.6 226.1 452.1 904.3
0.177 6 0.45 0.90 2.26 4.51 9.02 11.28 22.56 45.11 90.22 135.3 225.6 451.1 902.2
0.177 8 0.45 0.90 2.25 4.50 9.00 11.25 22.50 45.01 90.02 135.0 225.0 450.1 900.2
0.178 0 0.45 0.90 2.25 4.49 8.98 11.23 22.45 44.91 89.82 134.7 224.5 449.1 898.2
0.178 2 0.45 0.90 2.24 4.48 8.96 11.20 22.40 44.81 89.62 134.4 224.0 448.1 896.2
0.178 4 0.45 0.89 2.24 4.47 8.94 11.18 22.35 44.71 89.41 134.1 223.5 447.1 894.1
0.178 6 0.45 0.89 2.23 4.46 8.92 11.15 22.30 44.61 89.21 133.8 223.0 446.1 892.1
0.178 8 0.45 0.89 2.23 4.45 8.90 11.13 22.25 44.51 89.02 133.5 222.5 445.1 890.2
0.179 0 0.44 0.89 2.22 4.44 8.88 11.10 22.20 44.41 88.82 133.2 222.0 444.1 888.2
0.179 2 0.44 0.89 2.22 4.43 8.86 11.08 22.15 44.31 88.62 132.9 221.5 443.1 886.2
0.179 4 0.44 0.88 2.21 4.42 8.84 11.05 22.11 44.21 88.42 132.6 221.1 442.1 884.2
0.179 6 0.44 0.88 2.21 4.41 8.82 11.03 22.06 44.11 88.22 132.3 220.6 441.1 882.2
0.179 8 0.44 0.88 2.20 4.40 8.80 11.00 22.01 44.01 88.03 132.0 220.1 440.1 880.3
0.180 0 0.44 0.88 2.20 4.39 8.78 10.98 21.96 43.92 87.83 131.7 219.6 439.2 878.3
0.180 2 0.44 0.88 2.19 4.38 8.76 10.95 21.91 43.82 87.64 131.5 219.1 438.2 876.4
0.180 4 0.44 0.87 2.19 4.37 8.74 10.93 21.86 43.72 87.44 131.2 218.6 437.2 874.4
0.180 6 0.44 0.87 2.18 4.36 8.72 10.91 21.81 43.62 87.25 130.9 218.1 436.2 872.5
0.180 8 0.44 0.87 2.18 4.35 8.71 10.88 21.76 43.53 87.06 130.6 217.6 435.3 870.6
0.181 0 0.43 0.87 2.17 4.34 8.69 10.86 21.72 43.43 86.86 130.3 217.2 434.3 868.6
0.181 2 0.43 0.87 2.17 4.33 8.67 10.83 21.67 43.34 86.67 130.0 216.7 433.4 866.7
0.181 4 0.43 0.86 2.16 4.32 8.65 10.81 21.62 43.24 86.48 129.7 216.2 432.4 864.8
0.181 6 0.43 0.86 2.16 4.31 8.63 10.79 21.57 43.15 86.29 129.4 215.7 431.5 862.9
0.181 8 0.43 0.86 2.15 4.31 8.61 10.76 21.53 43.05 86.10 129.2 215.3 430.5 861.0
――――― [JIS Z 2251-2 pdf 30] ―――――
次のページ PDF 31
JIS Z 2251-2:2020の引用国際規格 ISO 一覧
- ISO 4545-4:2017(IDT)
JIS Z 2251-2:2020の国際規格 ICS 分類一覧
JIS Z 2251-2:2020の関連規格と引用規格一覧
- 規格番号
- 規格名称
- JISZ2251-1:2020
- ヌープ硬さ試験―第1部:試験方法