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Carbon steel pipe hardness

Date:2018-01-18    View:3427      Tag:Carbon steel pipe hardness
Carbon steel pipe hardness commonly used Brinell hardness, Rockwell hardness, Vickers hardness of three indicators to measure.

Brinell hardness
In the steel standard, it is the most extensive Brinell hardness, often expressed in indentation hardness of the material diameter, both intuitive and convenient. However, for hard steel or thin sodium.

Rockwell hardness
Rockwell hardness test tube, Brinell hardness test, indentation test method. The difference is that it is a measure of the indentation depth. Steel Rockwell hardness test is a very wide range of applications, among which steel used in HB HRC at Brinell hardness. Rockwell applies to the determination of extremely soft to extremely hard metal materials, which make up for the lack of Brinell hardness method, compared with the Brinell hardness method can be directly read from the hardness of the dial hardness tester. However, the Brinell hardness method is more accurate due to its small indentations.

Vickers hardness

The tube is also Vickers hardness test indentation test method for the determination of thin metal materials and the surface layer hardness. It has such key advantages as Brinell, Rockwell, and overcomes their basic drawbacks, but as an inconvenient method, Rockwell and Vickers methods are seldom used in steel standards.



Hardness value table


Brinell hardness (HB)

Rockwell hardness (HRC) Vickers hardness (HV)
415 44.5 440
401 43.1 425
388 41.8 410
375 40.4 396
363 39.1 383
352 37.9 272
341 36.6 360
331 35.5 350
321 34.3 339
311 33.1 328
302 32.1 319
293 30.9 309
285 29.9 301
277 28.8 292
269 27.6 284
262 26.6 276
255 25.4 269
248 24.2 261
241 22.8 253
235 21.7 247
229 20.5 241
223 - 234
217 - 228
212 - 222
207 - 218
201 - 212
197 - 207
192 - 202
187 - 296
183 - 192
179 - 188
174 - 183
170 - 178
167 - 175
163 - 171
156
- 163
149 - 156
143
- 150
- 68.0 940
- 67.5 920
- 67.0 900
767 66.4 880
757 65.9 860
745 65.3 840
733 64.7 920
722 64.0 900
710 63.3 780
698 62.5 760
684 61.8 740
682 61.7 737
670 61.0
720
656 60.1 700
653 60.0 697
647 59.7
690
638 59.2
680
630 58.8 670
627 58.7 667
620 58.3
660
601 57.3 640
578 56.0 615
- 55.6 607
555 54.7
591
- 54.0 579
534 53.5
569
- 52.5 553
514 52.1
547
- 51.6
539
- 51.1 530
495 51.0
528
- 50.3 516
477 49.6
508
- 48.8 495
461 48.5 491
- 47.2 474
444 47.1 472
429 45.7 455


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