The bhn can be converted into the ultimate tensile strength uts, although the relationship is dependent on the material, and therefore determined empirically. A variety of hardnesstesting methods are available, including the vickers, brinell, rockwell, meyer and leeb tests. These conversion charts are provided for guidance only as each scales uses different methods of measuring hardness. Sae j 417 revised in 1983 approximate conversion value for. The rockwell hardness tester to measure the hardness of metal measures resistance to penetration like the brinell test, but in the rockwell case, the depth of the impression is measured rather than the diametric area. Use astm e 14088 standard hardness conversion tables for metals relationship between brinell hardness, vickers hardness, rockwell hardness, rockwell. See figure 2 for a schematic of the rockwell hardness test. Hardness conversion chart provides values for brinell, rockwell a, rockwell b, rockwell c, rockwell d, rockwell e, rockwell f, rockwell superficial 15n, rockwell superficial 30n, rockwell superficial 45n, rockwell superficial 30t, vickers 6, shore, and tensile strength psi hardness. The following two conversion tables come from standard astm a 370. The right hand column show an approximate equivalent tensile strength. With the rockwell tester, the hardness is indicated directly on the scale attached to the machine.
Approximate hardness conversion numbers for steel based. Rockwell hardness testers brian service and calibration. Hardness conversion per astm e140, strength per astm a370, see bottom half of table. Pdf standard hardness conversion tables for metals. Use this model for the softer plastics and very soft metals. Twin rockwell or light load brinell direct load method selectable minormajor load combinations. Hardness conversion table approximate equivalent hardness numbers for brinell hardness numbers for steel and approximate relationship between brinell hardness number and tensile strength for steel. Shore hsc, hsd scleroscope hardness shore hfrsc shore hs hschsd leeb hld hle astm e 140 astm a 427 jis b 7731 eqoutip proceq 940 68 97,3 98 890 855 926 67,6 96,8 105 97,2 886 850. Rockwell hardness hrc, hrb to brinell hardness hb or bhn.
Hardness conversion table hardness conversions chart. Brinell indentation diameter mm brinell hardness number 3000kg load 10 mm tungsten carbide ball rockwell hardness number tensile strength. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate materialspecific comparison table for steels hardness comparison table. Rockwell c scale hardness hv vickers hardness brinell hardness hb 10mm ball load 3000kgf rockwell hardness3 rockwell superficial hardness. The brinell hardness test the brinell hardness test method consists of indenting the test material with a 10 mm diameter hardened steel or carbide ball subjected to a load of 3000 kg.
Astm e140 05 standard hardness conversion tables for metals. For softer materials the load can be reduced to 1500 kg or 500 kg to avoid excessive indentation. Vickers brinell rockwell c rockwell b shore tensile strength approximate value hv hb hrc hrb 15n 30n 45n 15t 30t 45t hs nmm 2 mpa 410 388 41. Brinell vs rockwell hardness test brinell, rockwell, and vickers hardness conversion table. Hardness conversion chart hra hrb hrc hrd hre hrf 15n 30n 45n 30t 3000 kg 500 kg rockwell rockwell superficial brinell vickers shore 61 98 21 40. This table shows approximate hardness of steel using brinell, rockwell b and c and vickers scales. To get the exact tensile strength values a tensile test must be performed. Brinell and rockwell hardness conversion chart these conversion tables presents data in the rockwell a, b, c, d, e and f hardness range on the relationship among.
Rockwell hardness hrc, hrb to brinell hardness hb or. The brinell values in parenthesis are only used when measured with a hard metal ball. This unit meets american society for testing and material astm standard d2583. Brinelltorockwellchardnessconversionchart southern. Brinell, rockwell, and vickers hardness conversion chart. Hardness conversion upper and lower limits capability plastic measurement modes steady load. A well structured brinell hardness number reveals the test conditions, and looks like this, 75 hb. Brinell hardness hb rockwell hardness hrb hrf hrc hra hrd hr15n hr30n hr45n 575 180 171 87,1 107,2 610 190 181 89,5 108,7 640 200 190 91,5 110,1. Vickers and brinell methods dont suffer from this effect. Print to pdf hardness conversion table the table below converts brinell hardness to rockwell hardness scales and vice versa, then compares those to the approximate tensile strength that those scales indicate. Pdf brinell and vickers hardness measurement using image. The best answer that i have found is that there are some rough conversion tables available for some of the scales. As a guide we show the theoretical conversion comparison of tonnes tensile in newtonsmm.
Approximate hardness conversion numbers for steel based on. The tensile strength of brinell and rockwell hardness can be measured using steel hardness conversion table. Table a is the comparison between rockwell c hardness, brinell hardness, vickers hardness and tensile strength rm. Brinell and rockwell hardness conversion tables american. Table b is the comparison between hrb, bh, hv and rm, refer to. Approximate hardness conversion numbers for wrought aluminum products. Apr 23, 2020 the rockwell hardness test is conveient to automate, but it suffers from many arbitrary scales and possible effects from the specimen support anvil. E 140 02 an american national standard standard hardness conversion tables for metals 1 relationship among brinell hardness vickers hardness, rockwell hardness, superficial hardness, knoop hardness, and scleroscope hardness this standard is issued under the fixed designation e 140. Brinell indentation diameter mm brinell hardness number 3000kg load 10 mm tungsten carbide ball rockwell hardness number tensile strength approximate. Hardness conversion chart brinell hb rockwell c hrc vickers hv rockwell b hrb 50 5 450 48 481 425 46 452 403 44 427 382 42 404 363 40 382 346 38 362 329 36 344 3 34 326 298 32 309 275 28. Here provide the brinell, rockwell, shore and vickers hardness conversion charttable pdf version for checking and download. Request a quote download view pdf ryerson family of companies.
Conversion table brinell hb 10 mm ball, 3000 kg load vickers hv 1 kg rockwell c hrc 120 degree cone 150 kg rockwell b hrb 116 ball 100 kg leeb hld1 800 72 856 780 1220 71 850 760 1170 70 843 745 1114 68 837 725 1060 67 829 712 1021 66 824 682 940 65 812. Hardness conversion table brinell hardness hb 10300015 rockwell hardness superficial hardness approx tensile dia mm hb a 60kg b 100kg c 150kg 15t 15kg 30t 30kg 45t 45kg ksi 5. If there is not a direct conversion between the scales used to measure the hardness of plastic and those used to measure metal, is there any way to compare the. Astm e140 05 standard hardness conversion tables for. Use this model for extremely soft materials such as lead, linoleum and leather. In such cases a reliable chart or formula expressing a definite relationship between rockwell and. Astm e14012be1 standard hardness conversion tables for. Hardness conversion table primerjalna tabela trdot edatum. The brinell and rockwell conversion table is the difference between the mild load to the major load applied on the surface of the material for a period of time.
Rockwell rockwell superficial brinell vickers shore 1 of 3. Tungsten 150 kg load 100 kg load 60kg load, hardness no. By continuing to browse this website, you agree to the use of cookies for statistical purposes as well as third party cookies generated by social network sharing buttons. Brinell hardness is sometimes quoted in megapascals. By continuing to browse this website, you agree to the use of cookies for statistical purposes as well as third party cookies generated by. Austenitic steels rockwell c hardness range leeb hardness type d rockwell c hardness vickers hardness brinell hardness leeb hardness type d impact device hdl 150 kgf hrc 10mm ball 3000kgf 10mm steel ball impact device hdl hbs 300kgf hbs. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate materialspecific comparison table for steels. The information below is for guidance only and should. Brinell and rockwell hardness conversion chart rockwell. Hardness conversion table brinell, rockwell, vickers, hardness conversion pipeline applies for plain carbon and lowalloy steels and cast steel and to a limited extent for highalloy andor work hardened steel. Pdf hardness test hardness test methods lokman only. Approximated range 25 to 150 brinell 10mm ball 500 kg load.
Rockwell c scale diamond cone 150 medium to very hard fine sanding rockwell b scale 116 carbide ball 100 soft to medium fine sanding brinell 10 mm carbide ball 5003,000 soft to hard coarse sanding vickers diamond pyramid 0. One more column indicating approximate equivalent tensile strength is also added. Conversion table brinell hb 10 mm ball, 3000 kg load vickers hv 1 kg rockwell c hrc 120 degree cone 150 kg rockwell b hrb 116 ball 100 kg leeb hld1 800 72 856 780 1220 71 850 760 1170 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. Approximate hardness conversion numbers for steel based on brinell hardness numbers brinell rockwell hardness no. Steel hardness conversion table calculator west yorkshire steel. Converting from one hardness scale to another rockwell to. Converting from one hardness scale to another rockwell. Rockwell scale which automatically identifies the type of indenter type and the maximum load otherwise the number is meaningless. Add poldi hammer impact brinell hardness indentation contrasting and inquirying function. Brinelltorockwellchardnessconversionchart southern tool.
The table below converts brinell hardness to rockwell hardness scales and vice versa, then compares those to the approximate tensile strength that those scales indicate. Hardness conversion table tensile strength, vickers, brinell och rockwell. These values are taken from the sae and astm conversion tables. Astm e140 12b2019e1 standard hardness conversion tables. Mar 10, 2021 5 astm e14005e1, standard hardness conversion tables for metals relationship among brinell hardness, vickers hardness, rockwell hardness, superficial hardness, knoop hardness, and. American piping offers this handy conversion calculator for converting the hardness measures of steel pipe using brinell, rockwell, and tensile values. Hardness conversion chart brinell and rockwell conversion table. Hardness conversion chart provides values for brinell. Standard hardness conversion tables for metals relationship.
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