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{{Short description|Standard hardness conversion table}}
There are a large number of [[hardness]] testing methods available (e.g. [[Vickers hardness test|Vickers]], [[Brinell scale|Brinell]], [[Rockwell scale|Rockwell]], [[Meyer hardness test|Meyer]] and [[Leeb rebound hardness test|Leeb]]). Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate material-specific comparison table e.g. for [[steel]]s.
A variety of [[hardness]]-testing methods are available, including the [[Vickers hardness test|Vickers]], [[Brinell scale|Brinell]], [[Rockwell scale|Rockwell]], [[Meyer hardness test|Meyer]] and [[Leeb rebound hardness test|Leeb]] tests. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate material-specific comparison table for [[steel]]s.


== Hardness comparison table ==
== Hardness comparison table ==
[[File:HARDCOMP.PNG|thumb|400px]]
[[File:Hardness comparisons (Brinell hardness).png|thumb|400px]]


{| class="wikitable"
{| class="wikitable"
![[Brinell hardness test|Brinell]] HB <br>(10&nbsp;mm Ball, 3000&nbsp;kg load)!![[Vickers hardness test|Vickers]] HV <br>(1&nbsp;kg)!![[Rockwell hardness test|Rockwell]] C HRC <br> (120 degree cone 150&nbsp;kg)!!Rockwell B HRB<br> (1/16" ball 100&nbsp;kg)!![[Leeb rebound hardness test|Leeb]] HLD<ref>H.Pollok, „Umwertung der Skalen“ (“Conversion of Scales”), Qualität und Zuverlässigkeit, Ausgabe 4/2008.</ref>
![[Brinell hardness test|Brinell]] HB <br>(10&nbsp;mm Ball, 3000&nbsp;kg load)!![[Vickers hardness test|Vickers]] HV <br>(5&nbsp;kg)!![[Rockwell hardness test|Rockwell]] C HRC <br> (120 degree cone 150&nbsp;kg)!!Rockwell B HRB<br> (1/16" ball 100&nbsp;kg)!![[Leeb rebound hardness test|Leeb]] HLD<ref>H.Pollok, „Umwertung der Skalen“ (“Conversion of Scales”), Qualität und Zuverlässigkeit, Ausgabe 4/2008.</ref>
|-
|-
|800||-||||-||900
|800||-||72||-||856
|-
|-
|780||1220||71||-||850
|780||1220||71||-||850
|-
|-
|760||1170||70||-||843
|760||1210||70||-||843
|-
|-
|745||1114||68||-||837
|745||1114||68||-||837
Line 69: Line 70:
|362||380||39||111||630
|362||380||39||111||630
|-
|-
|351||361||38||111||621
|351||361||38||111||622
|-
|-
|346||352||37||110||617
|346||352||37||110||617
Line 159: Line 160:
|140||141||-||77||404
|140||141||-||77||404
|-
|-
|135||135||-||75||397
|135||135||-||75||389
|-
|-
|130||130||-||72||390
|130||130||-||72||390
Line 179: Line 180:
==References==
==References==
<references />
<references />

==Further reading==
* ISO 18265: "Metallic materials — Conversion of hardness values" (2013)
* ASTM E140-12B(2019)e1: "Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness" (2019)


==External links==
==External links==
*[http://www.engineershandbook.com/Tables/hardness.htm Hardness Conversion Table – Brinell, Rockwell,Vickers – Various steels ]
*[http://www.engineershandbook.com/Tables/hardness.htm Hardness Conversion Table – Brinell, Rockwell,Vickers – Various steels ]. [https://web.archive.org/web/20111113055336/http://www.engineershandbook.com/Tables/hardness.htm (Archived)] (archived November 11, 2011)
*[http://www.engineersedge.com/hardness_conversion.htm Rockwell to Brinell conversion chart] (Brinell, Rockwell A,B,C)
*[http://www.engineersedge.com/hardness_conversion.htm Rockwell to Brinell conversion chart] (Brinell, Rockwell A,B,C)
*[http://www.struers.com/default.asp?top_id=5&main_id=25&doc_id=344&target=_self&collapse=1 Struers hardness conversion table] (Vickers, Brinell, Rockwell B,C,D)
*[http://www.struers.com/default.asp?top_id=5&main_id=25&doc_id=344&target=_self&collapse=1 Struers hardness conversion table] (Vickers, Brinell, Rockwell B,C,D)

Latest revision as of 21:15, 18 December 2023

A variety of hardness-testing methods are available, including the Vickers, Brinell, Rockwell, Meyer and Leeb tests. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate material-specific comparison table for steels.

Hardness comparison table

[edit]
Brinell HB
(10 mm Ball, 3000 kg load)		 Vickers HV
(5 kg)		 Rockwell C HRC
(120 degree cone 150 kg)		 Rockwell B HRB
(1/16" ball 100 kg)		 Leeb HLD[1]
800 - 72 - 856
780 1220 71 - 850
760 1210 70 - 843
745 1114 68 - 837
725 1060 67 - 829
712 1021 66 - 824
682 940 65 - 812
668 905 64 - 806
652 867 63 - 799
626 803 62 - 787
614 775 61 - 782
601 746 60 - 776
590 727 59 - 770
576 694 57 - 763
552 649 56 - 751
545 639 55 - 748
529 606 54 - 739
514 587 53 120 731
502 565 52 119 724
495 551 51 119 719
477 534 49 118 709
461 502 48 117 699
451 489 47 117 693
444 474 46 116 688
427 460 45 115 677
415 435 44 115 669
401 423 43 114 660
388 401 42 114 650
375 390 41 113 640
370 385 40 112 635
362 380 39 111 630
351 361 38 111 622
346 352 37 110 617
341 344 37 110 613
331 335 36 109 605
323 320 35 109 599
311 312 34 108 588
301 305 33 107 579
293 291 32 106 572
285 285 31 105 565
276 278 30 105 557
269 272 29 104 550
261 261 28 103 542
258 258 27 102 539
249 250 25 101 530
245 246 24 100 526
240 240 23 99 521
237 235 23 99 518
229 226 22 98 510
224 221 21 97 505
217 217 20 96 497
211 213 19 95 491
206 209 18 94 485
203 201 17 94 482
200 199 16 93 478
196 197 15 92 474
191 190 14 92 468
187 186 13 91 463
185 184 12 91 461
183 183 11 90 459
180 177 10 89 455
175 174 9 88 449
170 171 7 87 443
167 168 6 87 439
165 165 5 86 437
163 162 4 85 434
160 159 3 84 430
156 154 2 83 425
154 152 1 82 423
152 150 - 82 420
150 149 - 81 417
147 147 - 80 413
145 146 - 79 411
143 144 - 79 408
141 142 - 78 405
140 141 - 77 404
135 135 - 75 389
130 130 - 72 390
114 120 - 67 365
105 110 - 62 350
95 100 - 56 331
90 95 - 52 321
81 85 - 41 300
76 80 - 37 287

References

[edit]
  1. ^ H.Pollok, „Umwertung der Skalen“ (“Conversion of Scales”), Qualität und Zuverlässigkeit, Ausgabe 4/2008.

Further reading

[edit]
  • ISO 18265: "Metallic materials — Conversion of hardness values" (2013)
  • ASTM E140-12B(2019)e1: "Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness" (2019)
[edit]
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