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NPSDesignator ASTM A312 JIS G3459 5S 10S 40S 80S
ASTM JIS ASTM JIS ASTM JIS ASTM JIS
OD OD Thickness kg/m Thickness kg/m Thickness kg/m Thickness kg/m Thickness kg/m Thickness kg/m Thickness kg/m Thickness kg/m
1/8 10.29 10.50 - - 1.00 - 1.24 0.28 1.20 0.28 1.73 0.37 1.70 0.38 2.41 0.48 2.40 0.49
1/4 13.72 13.80 - - 1.20 - 1.65 0.50 1.65 0.50 2.24 0.64 2.20 0.64 3.02 0.81 3.00 0.81
3/8 17.15 17.30 - - 1.20 - 1.65 0.64 1.65 0.65 2.31 0.86 2.30 0.86 3.20 1.12 3.20 1.13
1/2 21.34 21.70 1.65 0.81 1.65 0.83 2.11 1.02 2.10 1.03 2.77 1.29 2.80 1.33 3.73 1.65 3.70 1.67
3/4 26.67 27.30 1.65 1.03 1.65 1.06 2.11 1.30 2.10 1.33 2.87 1.71 2.90 1.77 3.91 2.23 3.90 2.29
1 33.40 34.00 1.65 1.31 1.65 1.34 2.77 2.13 2.80 2.19 3.38 2.54 3.40 2.61 4.55 3.29 4.50 3.33
1 1/4 42.16 42.70 1.65 1.68 1.65 1.70 2.77 2.74 2.80 2.80 3.56 3.45 3.60 3.53 4.85 4.54 4.90 4.64
1 1/2 48.26 48.60 1.65 1.93 1.65 1.94 2.77 3.16 2.80 3.21 3.68 4.11 3.70 4.16 5.08 5.50 5.10 5.56
2 60.33 60.50 1.65 2.43 1.65 2.43 2.77 4.00 2.80 4.05 3.91 5.53 3.90 5.53 5.54 7.61 5.50 7.58
2 1/2 73.03 76.30 2.11 3.75 2.10 3.91 3.05 5.35 3.00 5.51 5.16 8.78 5.20 9.27 7.01 11.60 7.00 12.16
3 88.90 89.10 2.11 4.59 2.10 4.58 3.05 6.56 3.00 6.48 5.49 11.48 5.50 11.53 7.62 15.53 7.60 15.53
3 1/2 101.60 101.60 2.11 5.26 2.10 5.24 3.05 7.54 3.00 7.42 5.74 13.79 5.70 13.70 8.08 18.94 8.10 18.99
4 114.30 114.30 2.11 5.93 2.10 5.91 3.05 8.51 3.00 8.37 6.02 16.34 6.00 16.29 8.56 22.69 8.60 22.79
5 141.30 139.80 2.77 9.62 2.80 9.62 3.40 11.75 3.40 11.63 6.55 22.13 6.60 22.04 9.52 31.45 9.50 31.03
6 168.28 165.20 2.77 11.49 2.80 11.40 3.40 14.05 3.40 13.79 7.11 28.73 7.10 28.14 10.97 43.26 11.00 42.52
8 219.08 216.30 2.77 15.02 2.80 14.99 3.76 20.30 4.00 21.29 8.18 43.25 8.20 42.78 12.70 65.71 12.70 64.82
10 273.05 267.40 3.40 22.98 3.40 22.50 4.19 28.24 4.00 26.41 9.27 61.30 9.30 60.18 12.70 82.89 15.10 95.51
12 323.85 318.50 3.96 31.76 4.00 31.54 4.57 36.58 4.50 35.42 9.52 75.02 10.30 79.58 12.70 99.07 17.40 131.35
14 355.60 355.60 3.96 34.91 - - 4.78 42.04 - - - - 11.10 95.87 - - 19.00 160.33
16 406.40 406.40 4.19 42.25 - - 4.78 48.13 - - - - 12.70 125.35 - - 21.40 206.55
18 457.20 457.20 4.19 47.59 - - 4.78 54.22 - - - - 14.30 158.78 - - 23.80 258.60
20 508.00 508.00 4.78 60.30 - - 5.54 69.79 - - - - 15.10 186.59 - - 26.20 316.46
22 558.80 558.80 4.78 66.39 - - 5.54 76.84 - - - - 15.90 216.41 - - 28.60 380.15
24 609.60 609.60 5.54 83.90 - - 6.35 96.03 - - - - 17.50 259.77 - - 31.00 449.67
30 762.00 660.40 6.35 120.30 - - 7.92 149.73 - - - - 18.90 303.96 - - 34.00 533.93

°æµµÈ¯»êÇ¥(Hardness Conversion Table)

°æµµÈ¯»êÇ¥(Hardness Conversion Table) »ó¼¼³»¿ë
Brinell Rockwell Vickers ShoreS
HB HRC HRB HV HS
10mm Ball Diamond 1/16 Ball
3000kgf 150kgf 100kgf
495 51.6 - 539 -
477 50.3 - 516 -
461 48.8 - 495 -
444 47.2 - 474 -
429 45.7 - 455 61.0
415 44.5 - 440 59.0
401 43.1 - 425 58.0
388 41.8 - 410 56.0
375 40.4 - 396 54.0
363 39.1 - 383 52.0
352 37.9 (110.0) 372 51.0
341 36.6 (109.0) 360 50.0
331 35.5 (108.5) 350 48.0
321 34.3 (108.0) 339 47.0
311 33.1 (107.5) 328 46.0
302 32.1 (107.0) 319 45.0
293 30.9 (106.0) 309 43.0
285 29.9 (105.5) 301 -
277 28.8 (104.5) 292 41.0
269 27.6 (104.0) 284 40.0
262 26.6 (103.0) 276 40.0
255 25.4 (102.0) 269 38.0
248 24.2 (101.0) 261 37.0
241 22.8 100.0 253 36.0
235 21.7 99.0 247 35.0
229 20.5 98.2 241 34.0
223 (18.8) 97.3 234 -
217 (17.5) 96.4 228 33.0
212 (16.0) 95.5 222 -
207 (15.2) 94.6 218 32.0
201 (13.8) 93.8 212 31.0
197 (12.7) 92.8 207 30.0
192 (11.5) 91.9 202 29.0
187 (10.5) 90.7 196 -
183 (9.00) 90.0 192 28.0
179 (8.00) 89.0 188 27.0
174 (6.40) 87.8 182 -
170 (5.40) 86.8 178 26.0
167 (4.40) 86.0 175 -
163 (3.30) 85.0 171 25.0
156 (0.90) 82.9 163
149 - 80.8 156 23.0
143 - 78.7 150 22.0
137 - 76.4 143 21.0
131 - 74.0 137 -
126 - 72.0 132 20.0
121 - 69.8 127 19.0
116 - 67.6 122 18.0
111 - 65.7 117 15.0

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