This tool converts hardness values to different scales: Brinell (HB), Vickers (HV) and Rockwell C (HRC). It is based on ASTM E140 hardness conversion data for non-austenitic steels (Table 1).
| Rockwell C Hardness Number 150 kg (HRC) | Vickers Hardness Number (HV) | Brinell Hardness Number, 10 mm Standard ball, 3000 kg (HBS) | Brinell Hardness Number, 10 mm Carbide ball, 3000 kg (HBW) |
|---|---|---|---|
| 68 | 940 | - | - |
| 67 | 900 | - | - |
| 66 | 865 | - | - |
| 65 | 832 | - | (739) |
| 64 | 800 | - | (722) |
| 63 | 772 | - | (705) |
| 62 | 746 | - | (688) |
| 61 | 720 | - | (670) |
| 60 | 697 | - | (654) |
| 59 | 674 | - | 634 |
| 58 | 653 | - | 615 |
| 57 | 633 | - | 595 |
| 56 | 613 | - | 577 |
| 55 | 595 | - | 560 |
| 54 | 577 | - | 543 |
| 53 | 560 | - | 525 |
| 52 | 544 | (500) | 512 |
| 51 | 528 | (487) | 496 |
| 50 | 513 | (475) | 481 |
| 49 | 498 | (464) | 469 |
| 48 | 484 | 451 | 455 |
| 47 | 471 | 442 | 443 |
| 46 | 458 | 432 | 432 |
| 45 | 446 | 421 | 421 |
| 44 | 434 | 409 | 409 |
| 43 | 423 | 400 | 400 |
| 42 | 412 | 390 | 390 |
| 41 | 402 | 381 | 381 |
| 40 | 392 | 371 | 371 |
| 39 | 382 | 362 | 362 |
| 38 | 372 | 353 | 353 |
| 37 | 363 | 344 | 344 |
| 36 | 354 | 336 | 336 |
| 35 | 345 | 327 | 327 |
| 34 | 336 | 319 | 319 |
| 33 | 327 | 311 | 311 |
| 32 | 318 | 301 | 301 |
| 31 | 310 | 294 | 294 |
| 30 | 302 | 286 | 286 |
| 29 | 294 | 279 | 279 |
| 28 | 286 | 271 | 271 |
| 27 | 279 | 264 | 264 |
| 26 | 272 | 258 | 258 |
| 25 | 266 | 253 | 253 |
| 24 | 260 | 247 | 247 |
| 23 | 254 | 243 | 243 |
| 22 | 248 | 237 | 237 |
| 21 | 243 | 231 | 231 |
| 20 | 238 | 226 | 226 |
The equivalences shown are based on ASTM E140. To assess the required hardness and wear behaviour of a component, explore the main surface treatment options below.
Coating hardness, heat hardening and wear resistance.
Explore heat treatments Read the guideAnodic-layer hardness, aluminum alloys and wear resistance.
Explore hardness and wear Read the guide
One of the main properties of electroless nickel plating is its corrosion resistance. Electroless nickel plating is in fact used on mechanical metal parts (steel, aluminum alloys or copper alloys) when protection from oxidation and corrosion by external agents is required.
Read More
The main metal alloys used in precision engineering are iron, aluminium and copper alloys, thanks to their mechanical properties, availability, cost-effectiveness and ease of machining.
Read More
Clean energy has become a top priority for governments and industries around the world, as reducing greenhouse gas emissions is essential to limiting the impact of climate change. In this context, hydrogen is emerging as a promising clean energy source for vehicles and beyond.
Read More