この規格ページの目次
19
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
0.122 0 0.96 1.91 4.78 9.56 19.12 23.90 47.80 95.60 191.2 286.8 478.0 956.0 1 912
0.122 2 0.95 1.91 4.76 9.53 19.06 23.82 47.64 95.29 190.6 285.9 476.4 952.9 1 906
0.122 4 0.95 1.90 4.75 9.50 18.99 23.74 47.49 94.97 189.9 284.9 474.9 949.7 1 899
0.122 6 0.95 1.89 4.73 9.47 18.93 23.67 47.33 94.66 189.3 284.0 473.3 946.6 1 893
0.122 8 0.94 1.89 4.72 9.44 18.87 23.59 47.18 94.36 188.7 283.1 471.8 943.6 1 887
0.123 0 0.94 1.88 4.70 9.40 18.81 23.51 47.02 94.05 188.1 282.1 470.2 940.5 1 881
0.123 2 0.94 1.87 4.69 9.37 18.75 23.44 46.87 93.74 187.5 281.2 468.7 937.4 1 875
0.123 4 0.93 1.87 4.67 9.34 18.69 23.36 46.72 93.44 186.9 280.3 467.2 934.4 1 869
0.123 6 0.93 1.86 4.66 9.31 18.63 23.28 46.57 93.14 186.3 279.4 465.7 931.4 1 863
0.123 8 0.93 1.86 4.64 9.28 18.57 23.21 46.42 92.84 185.7 278.5 464.2 928.4 1 857
0.124 0 0.93 1.85 4.63 9.25 18.51 23.13 46.27 92.54 185.1 277.6 462.7 925.4 1 851
0.124 2 0.92 1.84 4.61 9.22 18.45 23.06 46.12 92.24 184.5 276.7 461.2 922.4 1 845
0.124 4 0.92 1.84 4.60 9.19 18.39 22.99 45.97 91.94 183.9 275.8 459.7 919.4 1 839
0.124 6 0.92 1.83 4.58 9.16 18.33 22.91 45.82 91.65 183.3 274.9 458.2 916.5 1 833
0.124 8 0.91 1.83 4.57 9.14 18.27 22.84 45.68 91.36 182.7 274.1 456.8 913.6 1 827
0.125 0 0.91 1.82 4.55 9.11 18.21 22.77 45.53 91.06 182.1 273.2 455.3 910.6 1 821
0.125 2 0.91 1.82 4.54 9.08 18.15 22.69 45.39 90.77 181.5 272.3 453.9 907.7 1 815
0.125 4 0.90 1.81 4.52 9.05 18.10 22.62 45.24 90.48 181.0 271.5 452.4 904.8 1 810
0.125 6 0.90 1.80 4.51 9.02 18.04 22.55 45.10 90.20 180.4 270.6 451.0 902.0 1 804
0.125 8 0.90 1.80 4.50 8.99 17.98 22.48 44.95 89.91 179.8 269.7 449.5 899.1 1 798
0.126 0 0.90 1.79 4.48 8.96 17.92 22.41 44.81 89.62 179.2 268.9 448.1 896.2 1 792
0.126 2 0.89 1.79 4.47 8.93 17.87 22.34 44.67 89.34 178.7 268.0 446.7 893.4 1 787
0.126 4 0.89 1.78 4.45 8.91 17.81 22.26 44.53 89.06 178.1 267.2 445.3 890.6 1 781
0.126 6 0.89 1.78 4.44 8.88 17.76 22.19 44.39 88.78 177.6 266.3 443.9 887.8 1 776
0.126 8 0.88 1.77 4.42 8.85 17.70 22.12 44.25 88.50 177.0 265.5 442.5 885.0 1 770
0.127 0 0.88 1.76 4.41 8.82 17.64 22.05 44.11 88.22 176.4 264.7 441.1 882.2 1 764
0.127 2 0.88 1.76 4.40 8.79 17.59 21.99 43.97 87.94 175.9 263.8 439.7 879.4 1 759
0.127 4 0.88 1.75 4.38 8.77 17.53 21.92 43.83 87.67 175.3 263.0 438.3 876.7 1 753
0.127 6 0.87 1.75 4.37 8.74 17.48 21.85 43.70 87.39 174.8 262.2 437.0 873.9 1 748
0.127 8 0.87 1.74 4.36 8.71 17.42 21.78 43.56 87.12 174.2 261.4 435.6 871.2 1 742
――――― [JIS Z 2251-2 pdf 21] ―――――
20
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
0.128 0 0.87 1.74 4.34 8.68 17.37 21.71 43.42 86.85 173.7 260.5 434.2 868.5 1 737
0.128 2 0.87 1.73 4.33 8.66 17.31 21.64 43.29 86.57 173.1 259.7 432.9 865.7 1 731
0.128 4 0.86 1.73 4.32 8.63 17.26 21.58 43.15 86.31 172.6 258.9 431.5 863.1 1 726
0.128 6 0.86 1.72 4.30 8.60 17.21 21.51 43.02 86.04 172.1 258.1 430.2 860.4 1 721
0.128 8 0.86 1.72 4.29 8.58 17.15 21.44 42.89 85.77 171.5 257.3 428.9 857.7 1 715
0.129 0 0.86 1.71 4.28 8.55 17.10 21.38 42.75 85.50 171.0 256.5 427.5 855.0 1 710
0.129 2 0.85 1.70 4.26 8.52 17.05 21.31 42.62 85.24 170.5 255.7 426.2 852.4 1 705
0.129 4 0.85 1.70 4.25 8.50 17.00 21.24 42.49 84.98 170.0 254.9 424.9 849.8 1 700
0.129 6 0.85 1.69 4.24 8.47 16.94 21.18 42.36 84.71 169.4 254.1 423.6 847.1 1 694
0.129 8 0.84 1.69 4.22 8.45 16.89 21.11 42.23 84.45 168.9 253.4 422.3 844.5 1 689
0.130 0 0.84 1.68 4.21 8.42 16.84 21.05 42.10 84.19 168.4 252.6 421.0 841.9 1 684
0.130 2 0.84 1.68 4.20 8.39 16.79 20.98 41.97 83.94 167.9 251.8 419.7 839.4 1 679
0.130 4 0.84 1.67 4.18 8.37 16.74 20.92 41.84 83.68 167.4 251.0 418.4 836.8 1 674
0.130 6 0.83 1.67 4.17 8.34 16.68 20.86 41.71 83.42 166.8 250.3 417.1 834.2 1 668
0.130 8 0.83 1.66 4.16 8.32 16.63 20.79 41.58 83.17 166.3 249.5 415.8 831.7 1 663
0.131 0 0.83 1.66 4.15 8.29 16.58 20.73 41.46 82.91 165.8 248.7 414.6 829.1 1 658
0.131 2 0.83 1.65 4.13 8.27 16.53 20.67 41.33 82.66 165.3 248.0 413.3 826.6 1 653
0.131 4 0.82 1.65 4.12 8.24 16.48 20.60 41.20 82.41 164.8 247.2 412.0 824.1 1 648
0.131 6 0.82 1.64 4.11 8.22 16.43 20.54 41.08 82.16 164.3 246.5 410.8 821.6 1 643
0.131 8 0.82 1.64 4.10 8.19 16.38 20.48 40.96 81.91 163.8 245.7 409.6 819.1 1 638
0.132 0 0.82 1.63 4.08 8.17 16.33 20.42 40.83 81.66 163.3 245.0 408.3 816.6 1 633
0.132 2 0.81 1.63 4.07 8.14 16.28 20.35 40.71 81.42 162.8 244.2 407.1 814.2 1 628
0.132 4 0.81 1.62 4.06 8.12 16.23 20.29 40.58 81.17 162.3 243.5 405.8 811.7 1 623
0.132 6 0.81 1.62 4.05 8.09 16.18 20.23 40.46 80.92 161.8 242.8 404.6 809.2 1 618
0.132 8 0.81 1.61 4.03 8.07 16.14 20.17 40.34 80.68 161.4 242.0 403.4 806.8 1 614
0.133 0 0.80 1.61 4.02 8.04 16.09 20.11 40.22 80.44 160.9 241.3 402.2 804.4 1 609
0.133 2 0.80 1.60 4.01 8.02 16.04 20.05 40.10 80.20 160.4 240.6 401.0 802.0 1 604
0.133 4 0.80 1.60 4.00 8.00 15.99 19.99 39.98 79.96 159.9 239.9 399.8 799.6 1 599
0.133 6 0.80 1.59 3.99 7.97 15.94 19.93 39.86 79.72 159.4 239.2 398.6 797.2 1 594
0.133 8 0.79 1.59 3.97 7.95 15.90 19.87 39.74 79.48 159.0 238.4 397.4 794.8 1 590
――――― [JIS Z 2251-2 pdf 22] ―――――
21
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
0.134 0 0.79 1.58 3.96 7.92 15.85 19.81 39.62 79.24 158.5 237.7 396.2 792.4 1 585
0.134 2 0.79 1.58 3.95 7.90 15.80 19.75 39.50 79.01 158.0 237.0 395.0 790.1 1 580
0.134 4 0.79 1.58 3.94 7.88 15.75 19.69 39.39 78.77 157.5 236.3 393.9 787.7 1 575
0.134 6 0.79 1.57 3.93 7.85 15.71 19.63 39.27 78.54 157.1 235.6 392.7 785.4 1 571
0.134 8 0.78 1.57 3.92 7.83 15.66 19.58 39.15 78.30 156.6 234.9 391.5 783.0 1 566
0.135 0 0.78 1.56 3.90 7.81 15.61 19.52 39.04 78.07 156.1 234.2 390.4 780.7 1 561
0.135 2 0.78 1.56 3.89 7.78 15.57 19.46 38.92 77.84 155.7 233.5 389.2 778.4 1 557
0.135 4 0.78 1.55 3.88 7.76 15.52 19.40 38.81 77.61 155.2 232.8 388.1 776.1 1 552
0.135 6 0.77 1.55 3.87 7.74 15.48 19.35 38.69 77.38 154.8 232.2 386.9 773.8 1 548
0.135 8 0.77 1.54 3.86 7.72 15.43 19.29 38.58 77.16 154.3 231.5 385.8 771.6 1 543
0.136 0 0.77 1.54 3.85 7.69 15.39 19.23 38.46 76.93 153.9 230.8 384.6 769.3 1 539
0.136 2 0.77 1.53 3.84 7.67 15.34 19.18 38.35 76.70 153.4 230.1 383.5 767.0 1 534
0.136 4 0.76 1.53 3.82 7.65 15.30 19.12 38.24 76.48 153.0 229.4 382.4 764.8 1 530
0.136 6 0.76 1.53 3.81 7.63 15.25 19.06 38.13 76.25 152.5 228.8 381.3 762.5 1 525
0.136 8 0.76 1.52 3.80 7.60 15.21 19.01 38.02 76.03 152.1 228.1 380.2 760.3 1 521
0.137 0 0.76 1.52 3.79 7.58 15.16 18.95 37.91 75.81 151.6 227.4 379.1 758.1 1 516
0.137 2 0.76 1.51 3.78 7.56 15.12 18.90 37.79 75.59 151.2 226.8 377.9 755.9 1 512
0.137 4 0.75 1.51 3.77 7.54 15.07 18.84 37.68 75.37 150.7 226.1 376.8 753.7 1 507
0.137 6 0.75 1.50 3.76 7.52 15.03 18.79 37.58 75.15 150.3 225.5 375.8 751.5 1 503
0.137 8 0.75 1.50 3.75 7.49 14.99 18.73 37.47 74.93 149.9 224.8 374.7 749.3 1 499
0.138 0 0.75 1.49 3.74 7.47 14.94 18.68 37.36 74.72 149.4 224.1 373.6 747.2 1 494
0.138 2 0.74 1.49 3.72 7.45 14.90 18.62 37.25 74.50 149.0 223.5 372.5 745.0 1 490
0.138 4 0.74 1.49 3.71 7.43 14.86 18.57 37.14 74.28 148.6 222.9 371.4 742.8 1 486
0.138 6 0.74 1.48 3.70 7.41 14.81 18.52 37.03 74.07 148.1 222.2 370.3 740.7 1 481
0.138 8 0.74 1.48 3.69 7.39 14.77 18.46 36.93 73.86 147.7 221.6 369.3 738.6 1 477
0.139 0 0.74 1.47 3.68 7.36 14.73 18.41 36.82 73.64 147.3 220.9 368.2 736.4 1 473
0.139 2 0.73 1.47 3.67 7.34 14.69 18.36 36.72 73.43 146.9 220.3 367.2 734.3 1 469
0.139 4 0.73 1.46 3.66 7.32 14.64 18.31 36.61 73.22 146.4 219.7 366.1 732.2 1 464
0.139 6 0.73 1.46 3.65 7.30 14.60 18.25 36.51 73.01 146.0 219.0 365.1 730.1 1 460
0.139 8 0.73 1.46 3.64 7.28 14.56 18.20 36.40 72.80 145.6 218.4 364.0 728.0 1 456
――――― [JIS Z 2251-2 pdf 23] ―――――
22
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
0.140 0 0.73 1.45 3.63 7.26 14.52 18.15 36.30 72.60 145.2 217.8 363.0 726.0 1 452
0.140 2 0.72 1.45 3.62 7.24 14.48 18.10 36.19 72.39 144.8 217.2 361.9 723.9 1 448
0.140 4 0.72 1.44 3.61 7.22 14.44 18.05 36.09 72.18 144.4 216.5 360.9 721.8 1 444
0.140 6 0.72 1.44 3.60 7.20 14.40 17.99 35.99 71.98 144.0 215.9 359.9 719.8 1 440
0.140 8 0.72 1.44 3.59 7.18 14.35 17.94 35.89 71.77 143.5 215.3 358.9 717.7 1 435
0.141 0 0.72 1.43 3.58 7.16 14.31 17.89 35.78 71.57 143.1 214.7 357.8 715.7 1 431
0.141 2 0.71 1.43 3.57 7.14 14.27 17.84 35.68 71.37 142.7 214.1 356.8 713.7 1 427
0.141 4 0.71 1.42 3.56 7.12 14.23 17.79 35.58 71.17 142.3 213.5 355.8 711.7 1 423
0.141 6 0.71 1.42 3.55 7.10 14.19 17.74 35.48 70.96 141.9 212.9 354.8 709.6 1 419
0.141 8 0.71 1.42 3.54 7.08 14.15 17.69 35.38 70.76 141.5 212.3 353.8 707.6 1 415
0.142 0 0.71 1.41 3.53 7.06 14.11 17.64 35.28 70.57 141.1 211.7 352.8 705.7 1 411
0.142 2 0.70 1.41 3.52 7.04 14.07 17.59 35.18 70.37 140.7 211.1 351.8 703.7 1 407
0.142 4 0.70 1.40 3.51 7.02 14.03 17.54 35.08 70.17 140.3 210.5 350.8 701.7 1 403
0.142 6 0.70 1.40 3.50 7.00 13.99 17.49 34.99 69.97 139.9 209.9 349.9 699.7 1 399
0.142 8 0.70 1.40 3.49 6.98 13.96 17.44 34.89 69.78 139.6 209.3 348.9 697.8 1 396
0.143 0 0.70 1.39 3.48 6.96 13.92 17.40 34.79 69.58 139.2 208.7 347.9 695.8 1 392
0.143 2 0.69 1.39 3.47 6.94 13.88 17.35 34.69 69.39 138.8 208.2 346.9 693.9 1 388
0.143 4 0.69 1.38 3.46 6.92 13.84 17.30 34.60 69.19 138.4 207.6 346.0 691.9 1 384
0.143 6 0.69 1.38 3.45 6.90 13.80 17.25 34.50 69.00 138.0 207.0 345.0 690.0 1 380
0.143 8 0.69 1.38 3.44 6.88 13.76 17.20 34.40 68.81 137.6 206.4 344.0 688.1 1 376
0.144 0 0.69 1.37 3.43 6.86 13.72 17.15 34.31 68.62 137.2 205.9 343.1 686.2 1 372
0.144 2 0.68 1.37 3.42 6.84 13.69 17.11 34.21 68.43 136.9 205.3 342.1 684.3 1 369
0.144 4 0.68 1.36 3.41 6.82 13.65 17.06 34.12 68.24 136.5 204.7 341.2 682.4 1 365
0.144 6 0.68 1.36 3.40 6.81 13.61 17.01 34.03 68.05 136.1 204.2 340.3 680.5 1 361
0.144 8 0.68 1.36 3.39 6.79 13.57 16.97 33.93 67.86 135.7 203.6 339.3 678.6 1 357
0.145 0 0.68 1.35 3.38 6.77 13.54 16.92 33.84 67.68 135.4 203.0 338.4 676.8 1 354
0.145 2 0.67 1.35 3.37 6.75 13.50 16.87 33.74 67.49 135.0 202.5 337.4 674.9 1 350
0.145 4 0.67 1.35 3.37 6.73 13.46 16.83 33.65 67.30 134.6 201.9 336.5 673.0 1 346
0.145 6 0.67 1.34 3.36 6.71 13.42 16.78 33.56 67.12 134.2 201.4 335.6 671.2 1 342
0.145 8 0.67 1.34 3.35 6.69 13.39 16.73 33.47 66.93 133.9 200.8 334.7 669.3 1 339
――――― [JIS Z 2251-2 pdf 24] ―――――
23
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
0.146 0 0.67 1.34 3.34 6.68 13.35 16.69 33.38 66.75 133.5 200.3 333.8 667.5 1 335
0.146 2 0.67 1.33 3.33 6.66 13.31 16.64 33.28 66.57 133.1 199.7 332.8 665.7 1 331
0.146 4 0.66 1.33 3.32 6.64 13.28 16.60 33.19 66.39 132.8 199.2 331.9 663.9 1 328
0.146 6 0.66 1.32 3.31 6.62 13.24 16.55 33.10 66.21 132.4 198.6 331.0 662.1 1 324
0.146 8 0.66 1.32 3.30 6.60 13.21 16.51 33.01 66.03 132.1 198.1 330.1 660.3 1 321
0.147 0 0.66 1.32 3.29 6.58 13.17 16.46 32.92 65.85 131.7 197.5 329.2 658.5 1 317
0.147 2 0.66 1.31 3.28 6.57 13.13 16.42 32.83 65.67 131.3 197.0 328.3 656.7 1 313
0.147 4 0.65 1.31 3.27 6.55 13.10 16.37 32.74 65.49 131.0 196.5 327.4 654.9 1 310
0.147 6 0.65 1.31 3.27 6.53 13.06 16.33 32.66 65.31 130.6 195.9 326.6 653.1 1 306
0.147 8 0.65 1.30 3.26 6.51 13.03 16.28 32.57 65.14 130.3 195.4 325.7 651.4 1 303
0.148 0 0.65 1.30 3.25 6.50 12.99 16.24 32.48 64.96 129.9 194.9 324.8 649.6 1 299
0.148 2 0.65 1.30 3.24 6.48 12.96 16.20 32.39 64.78 129.6 194.4 323.9 647.8 1 296
0.148 4 0.65 1.29 3.23 6.46 12.92 16.15 32.31 64.61 129.2 193.8 323.1 646.1 1 292
0.148 6 0.64 1.29 3.22 6.44 12.89 16.11 32.22 64.44 128.9 193.3 322.2 644.4 1 289
0.148 8 0.64 1.29 3.21 6.43 12.85 16.07 32.13 64.26 128.5 192.8 321.3 642.6 1 285
0.149 0 0.64 1.28 3.20 6.41 12.82 16.02 32.05 64.09 128.2 192.3 320.5 640.9 1 282
0.149 2 0.64 1.28 3.20 6.39 12.78 15.98 31.96 63.92 127.8 191.8 319.6 639.2 1 278
0.149 4 0.64 1.27 3.19 6.37 12.75 15.94 31.87 63.75 127.5 191.2 318.7 637.5 1 275
0.149 6 0.64 1.27 3.18 6.36 12.72 15.89 31.79 63.58 127.2 190.7 317.9 635.8 1 272
0.149 8 0.63 1.27 3.17 6.34 12.68 15.85 31.70 63.41 126.8 190.2 317.0 634.1 1 268
0.150 0 0.63 1.26 3.16 6.32 12.65 15.81 31.62 63.24 126.5 189.7 316.2 632.4 1 265
0.150 2 0.63 1.26 3.15 6.31 12.61 15.77 31.54 63.07 126.1 189.2 315.4 630.7 1 261
0.150 4 0.63 1.26 3.15 6.29 12.58 15.73 31.45 62.90 125.8 188.7 314.5 629.0 1 258
0.150 6 0.63 1.25 3.14 6.27 12.55 15.68 31.37 62.74 125.5 188.2 313.7 627.4 1 255
0.150 8 0.63 1.25 3.13 6.26 12.51 15.64 31.28 62.57 125.1 187.7 312.8 625.7 1 251
0.151 0 0.62 1.25 3.12 6.24 12.48 15.60 31.20 62.40 124.8 187.2 312.0 624.0 1 248
0.151 2 0.62 1.24 3.11 6.22 12.45 15.56 31.12 62.24 124.5 186.7 311.2 622.4 1 245
0.151 4 0.62 1.24 3.10 6.21 12.41 15.52 31.04 62.07 124.1 186.2 310.4 620.7 1 241
0.151 6 0.62 1.24 3.10 6.19 12.38 15.48 30.96 61.91 123.8 185.7 309.6 619.1 1 238
0.151 8 0.62 1.23 3.09 6.17 12.35 15.44 30.87 61.75 123.5 185.2 308.7 617.5 1 235
――――― [JIS Z 2251-2 pdf 25] ―――――
次のページ PDF 26
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