Wilson wall Chart2 - American Metal Processing Co.

1 Conversion Chart Cylindrical Correction Chart 53. Cylindrical work corrections to be added to observed Hardened Steel and Hardened Alloys Rockwell number for scales indicated Soft Steel, Grey and Malleable Cast Iron and Most Non-Ferrous Metals Tensile Micro- Scales C, D, A Rockwell Superficial Knoop Brinell Tensile Micro- Rockwell Superficial Vickers Knoop Brinell Strength Strength ficial ficial Brale Diamond Indenter C A D G 15-N 30-N 45-N HV HK HB KSI WMN Diameter of Specimen - inches (mm) B F G A E H K 15-T 30-T 45-T HK HB HB. HV KSI WMN. Observed 1/8 1/4 3/8 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2. 500 3000 500. 150 60 100 150 15 30 45 Reading ( ) ( ) (10) (13) (16) (19) (22) (25) (32) (38) 100 60 150 60 100 60 150 15 30 45 500 kg 3000 1000. kg 1000 kg kg kg kg kg kg kg kg kg gm 1000. kg kg kg kg gm 1000 kg 1/8 1/8 1/8 1/16 1/16 1/16 10 kg lbs/. kg kg kg 1/16 N 10 kg 10 lbs/ 90 NA 0 0 0 0 0 0 0 0 1/16 1/16 1/16 Brale and gm N N and gm mm 10 kg sq in Brale Brale Brale ball Brale Brale mm sq in 85 0 0 0 0 0 0 ball ball ball ball ball ball ball ball ball over Brale over ball ball 80 0 0 0 0.

2 80 1865 - - 75 0 0 0 100 251 201 240 116 730. 79 1787 - - 70 0 0 99 246 195 234 114 725. 98 241 189 228 109 719. 78 1710 - - 65 0 0. 77 1633 - - 60 0 0 97 236 184 222 104 713. 96 231 179 216 102 707. 76 1556 - - 55 0 95 226 175 210 100 701. 75 1478 - - 50 94 221 171 205 98 696. 74 1400 - - 45 93 NA 216 167 200 94 690. 73 1323 - - 40 92 100 211 163 195 92 684. NOTE 1. NOTE 2. 72 1245 - - 35 91 206 160 190 90 679. 71 1160 - - 30 90 201 157 185 89 674. 70 1076 972 953 25 89 196 154 180 88 668. 69 1004 946 949 20 88 192 151 176 86 662. 68 940 920 945 Scales B, F, G 87 188 148 172 84 656. 67 900 895 942 1/16-in Ball Indenter 86 184 145 169 83 651. 66 865 870 NA 938 Diameter of Specimen - inches (mm) 85 180 142 165 82 646. 65 832 846 739 934 Observed 1/8 1/4 3/8 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 84 176 140 162 81 640. 64 800 822 722 930 Reading ( ) ( ) (10) (13) (16) (19) (22) (25) (32) (38) 83 173 137 159 80 634. 63 772 799 706 926 100 NA NA NA 82 170 135 156 77 629. 81 167 133 153 73 624.

3 62 746 776 688 922 90 80 164 130 150 72 618. 61 720 754 670 917 80 60 697 732 654 NA 913 79 161 128 147 70 612. 70 78 158 126 144 69 607. 59 674 710 634 351 909 60 77 155 124 141 68 602. 58 653 690 615 338 904 50 76 NA 152 122 139 67 596. 57 633 670 595 325 900 40 75 150 120 137 66 592. 56 613 650 577 313 896 30 74 147 118 135 65 587. 55 595 630 560 301 891 20 73 145 116 132 64 581. 54 577 612 543 292 887 10 72 NA 143 114 130 63 576. 53 560 594 525 283 883 0 71 100 141 112 127 62 571. 52 544 576 512 273 879 Scales 15-N, 30-N, 45-N 70 139 110 125 61 566. 51 528 558 496 264 874 N Brale Diamond Indenter 69 137 109 123 60 561. 50 513 542 481 255 870 Diameter of Specimen - inches (mm). 68 135 107 121 59 556. 49 498 526 469 246 865 Observed 1/8 1/4 3/8 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 67 133 106 119 58 551. 48 484 510 455 238 861 66 131 104 117 57 546. Reading ( ) ( ) (10) (13) (16) (19) (22) (25) (32) (38) 65 129 102 116 56 542. 47 471 495 443 229 856 90 0 0 0 0 0 0 0 0 NA NA.

4 46 458 480 432 221 851 64 127 101 114 NA 537. 85 0 0 0 0 63 125 99 112 532. 45 446 466 421 215 847 80 0 0 0 62 124 98 110 527. 44 434 452 409 208 842 75 0 0 61 122 96 108 522. 43 423 438 400 201 837 70 60 120 95 107 517. 42 412 426 390 194 832 65 59 118 94 106 512. 41 402 414 381 188 827 60 58 117 92 104 507. 40 392 402 371 182 822 55 57 115 91 103 502. 39 382 391 362 177 817 50 56 114 90 101 497. 38 372 380 353 171 812 45 55 112 89 100 492. 37 363 370 344 166 807 40 54 111 87 NA 487. 36 354 360 336 161 802 35 53 110 86 482. 35 345 351 327 156 798 30 52 109 85 477. 34 336 342 319 152 793 51 108 84 472. 25 50 107 83 468. 33 327 334 311 149 788 20 32 318 326 301 146 783 49 NA 106 82 463. Scales 15-T, 30-T, 45-T 48 105 81 458. 31 NA 310 318 294 141 778 1/16-in Ball Indenter 47 104 80 453. 30 302 311 286 138 773 Diameter of Specimen - inches (mm). 46 103 80 448. 29 294 304 279 135 768 Observed 1/8 1/4 3/8 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 45 102 79 444. 28 286 297 271 131 762 Reading ( ) ( ) (10) (13) (16) (19) (22) (25) (32) (38) 44 101 78 439.

5 27 279 290 264 128 757. 90 NA NA 43 100 77 435. 26 272 284 258 125 751 80 42 99 76 430. 25 266 278 253 123 746 70 41 98 75 426. 24 260 272 247 119 741 40 97 75 422. 60 23 254 266 243 117 736 50 39 96 74 417. 22 248 261 237 115 730 40 38 95 73 413. 21 243 256 231 112 725 37 NA 94 72 409. 30 36 100 93 72 404. 20 238 251 226 110 720 20 35 92 71 401. Note These corrections are approximate only and represent the averages to the nearest 1/2 Rockwell number. 34 91 70 396. 1: A 10 mm steel ball was used for 450 BHN and below. A 10 mm carbide ball was used above 450 BHN. 33 90 69 392. NOTE 2. 2: The tensile strength relation to hardness is not exact, even for steel, unless it is determined for a specific material. 32 89 69 388. 31 88 68 384. 30 87 67 380. 29 87 66 376. Worldwide Service Network | 1-800-473-7838 28 NA 86 66 372. Hardness vs Minimum Thickness Chart 55 27 85 65 369. Wilson Instruments is an Instron ITW company and is backed by Instron's Any greater 26 84 65 365.

6 Professional service force. It is the industry's largest and most responsive thickness and Rockwell Rockwell 25 83 64 361. hardness can be Superficial Regular group, including factory trained and certified service engineers, application 24 82 64 357. safely tested on Hardness Scales Hardness Scales engineers, and service specialists. Instron field personnel expertise is just a 23 82 63 353. indicated scale phone call away. 22 81 62 350. 15N 30N 45N A D C 21 81 62 346. Services include: 20 80 61 343. 15 30 45 60 100 150 Calibration and Certification kgf kgf kgf kgf kgf kgf 19 79 61 339. 18 78 60 335. Thickness N Brale Brale Preventative Maintenance 17 78 60 332. inches (mm) Indenter Indenter Emergency Service 16 77 59 329..006 ( ) 92 - - - - - Installation and Relocation 15 76 59 325..008 ( ) 90 - - - - - 14 NA 75 59 322. On-site Parts and Accessories 13 75 58 318..010 ( ) 88 - - - - - 12 74 58 314..012 ( ) 83 82 77 - - - Application Support and Solutions 11 73 57 311.

7 014 ( ) 76 74 - - - On-site Training 10 72 57 308..016 ( ) 68 74 72 86 - - 9 71 57 304. 8 71 56 300..018 ( ) 66 68 84 - - 7 70 56 297..020 ( ) 57 63 82 77 - Hardness Products 6 69 55 293..022 ( ) 47 58 79 75 69 5 69 55 289. Wilson Instruments offers a full range of Wilson testing products and .024 ( ) 51 76 72 67 4 69 55 286. technology to meet virtually any hardness testing application and budget. 3 68 54 283..026 ( ) 37 71 68 65 2 68 54 279..028 ( ) 20 67 63 62 Rockwell Testers 1 63 54 276..030 ( ) 60 58 57 Knoop and Vickers Testers 0 63 53 272..032 ( ) 51 52 Image Analysis and Automatic Systems The values shown are approximate only. This chart is intended primarily as a reference guide..034 ( ) 43 45 Brinell Testers .036 ( ) 37. Universal Hardness Testers .038 ( ) 28..040 ( ) 20 Shore Durometers for Rubber and Plastic Any greater Portable Testers thickness and Rockwell Rockwell Custom Solutions hardness can be Superficial Regular safely tested on Hardness Scales Hardness Scales Test Blocks, Indenters, and Accessories indicated scale 15-T 30-T 45-T F B G.

8 15. kgf 30. kgf 45. kgf 60 100 150. kgf kgf kgf Conversions Thickness 1/16-in Ball 1/16-in Ball All values, except WMN, are consistent with ASTM E140 Tables 1 and 2, and inches (mm) Indenter Indenter ASTM A370 Tables 3A and 3B, where applicable. WMN or Wilson Microficial .010 ( ) 91 - - - - - Numbers were developed by Wilson Instruments in the Wilson Standards .012 ( ) 86 - - - - - laboratory and are not derived from ASTM..014 ( ) 81 80 - - - - .016 ( ) 75 72 71 - - - Cylindrical Corrections Values are consistent with ASTM E18 Table 6,7,13, and 14..018 ( ) 68 64 62 - - - Hardness vs. Minimum Thickness Values are consistent with ASTM E18 Tables .020 ( ) 55 53 - - - 4, 5, 11, and 12 except for D and G scale values, which are obtained from .022 ( ) 45 43 - - - indentation hardness testing by Vincent E. Lysaght..024 ( ) 34 31 98 94 94..026 ( ) 18 91 87 87..028 ( ) 4 85 80 76..030 ( ) 77 71 68..032 ( ) 69 62 59..034 ( ) 52 50..036 ( ) 40 42..038 ( ) 28 31. Originator of the Rockwell Tester.

9 040 ( ) 22 . X = No minimum hardness. These are approximate numbers only. | Americas | Europe | Asia