{"title":"Hardness Test Blocks","description":"\u003cp\u003eHardness test blocks give your tester a certified, traceable reference to verify accuracy and stay within tolerance. WESTport supplies blocks for every major hardness scale — Brinell, Rockwell, Rockwell superficial and microhardness — each individually calibrated in our ISO\/IEC 17025 accredited laboratory.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrinell test blocks\u003c\/strong\u003e across the full load range, 250 kg through 3000 kg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRockwell standard test blocks\u003c\/strong\u003e covering the A, B, C, D, E, F, G, H and K scales.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRockwell superficial test blocks\u003c\/strong\u003e for the 15N, 30N, 45N, 15T, 30T and 45T scales.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrohardness test blocks\u003c\/strong\u003e in Vickers and Knoop, mirror polished and precision mounted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRockwell master calibration sets\u003c\/strong\u003e pairing matched blocks with the indenter or penetrator used to certify them.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEvery block is individually tested and ships with a certificate traceable to NIST. Test surfaces are hand lapped and diamond polished to a mirror finish, and recertification is available to keep your hardness testing system in control.\u003c\/p\u003e","products":[{"product_id":"microhardness-test-block","title":"Microhardness Test Block","description":"\u003cdiv\u003e\n\n\u003cp\u003eMicrohardness test blocks are used to check the accuracy of micro\/ macro indentation testers. WESTport microhardness test blocks are available in a comprehensive range of values and loads. Microhardness test blocks are precision mounted for complete test block stability, ease of testing use and then diamond polished to a mirror finish. WESTport's state of the art closed loop load cell instrument used for Vickers and Knoop test block calibration insures that the most stable and accurate test process is performed each and every time.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eMacro Vickers blocks are the same dimensions as our Rockwell blocks and provide the maximum test surface available at heavy loads.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eVickers and Knoop micro test blocks are calibrated to meet and exceed American and International standards. All microhardness test blocks are calibrated in our ISO\/IEC 17025 accredited metrology laboratory with complete traceability to NIST.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eWESTport manufactures and provides the largest stocking inventory of Vickers and Knoop Diamond Indenters for all microhardness testing machines.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"WESTport Corp.","offers":[{"title":"Vickers","offer_id":43883177705508,"sku":"VTB1","price":749.0,"currency_code":"USD","in_stock":true},{"title":"Knoop","offer_id":43883177738276,"sku":"KTB1","price":749.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/vickers-knoop-microhardness-test-block-westport.png?v=1780006063"},{"product_id":"rockwell-calibration-set","title":"Rockwell Calibration Set","description":"\u003cdiv\u003e\n\n\u003cp\u003eRockwell master calibration sets provide the highest level of accuracy and are the most inexpensive solution for you. Master Calibration sets are the ultimate tool in Quality Control. Each set contains the test blocks and the actual master diamond indenter or carbide ball penetrator that was used to calibrate them. As a result of matching the hardness test blocks to a specific indenter or penetrator, a set relationship is established. This eliminates them as potential variables in the hardness test system. Should a problem arise, a master calibration set should be on hand to allow you to quickly and accurately determine whether your hardness tester is the source.\u003c\/p\u003e\n\u003cp\u003eRockwell master calibration sets are also useful when a comprehensive scale range is required for hardness testing machine verification. In addition they are extremely valuable in situations where a more precise level of tester verification and performance evaluation may be needed based on your quality requirements. Calibration sets provide the highest degree of uniformity and accuracy when validating your hardness testing machines.\u003c\/p\u003e\n\u003cp\u003eEach test block in our calibration sets has been calibrated on a hardness tester whose accuracy has been verified using N.I.S.T. traceable load and depth measuring devices. The test blocks are made from only the highest quality material to ensure complete uniformity and repeatability. They are hand lapped and polished to a mirror finish.\u003c\/p\u003e\n\u003cp\u003eEach test block is calibrated and marked with its own unique serial number along with the serial number of the indenter or penetrator in the calibration set that they were produced with. Each set comes in its own luxurious case complete with the latest test block certification requirements from ASTM and NIST, providing you with the most comprehensive calibration test block set available.\u003c\/p\u003e\n\u003cp\u003eMaster calibration sets are calibrated to meet American and International standards at the WESTport ISO \/ IEC 17025 accredited hardness calibration laboratory.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"WESTport Corp.","offers":[{"title":"A","offer_id":43883178491940,"sku":"CSA1","price":1150.0,"currency_code":"USD","in_stock":true},{"title":"B","offer_id":43883178524708,"sku":"CSB1","price":1150.0,"currency_code":"USD","in_stock":true},{"title":"C","offer_id":43883178557476,"sku":"CSC1","price":1195.0,"currency_code":"USD","in_stock":true},{"title":"15N","offer_id":43883178590244,"sku":"CSN1","price":1250.0,"currency_code":"USD","in_stock":true},{"title":"30N","offer_id":43883178623012,"sku":"CSN2","price":1250.0,"currency_code":"USD","in_stock":true},{"title":"45N","offer_id":43883178655780,"sku":"CSN3","price":1250.0,"currency_code":"USD","in_stock":true},{"title":"30T","offer_id":43883178688548,"sku":"CST1","price":1050.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/products\/rockwell-calibration-set_6_40a6af80-0b6a-46e8-80b5-773f668f2051.jpg?v=1518260510"},{"product_id":"rockwell-standard-test-block","title":"Rockwell Standard Test Block","description":"\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/RockCertSample.pdf?430831550652381705\" target=\"_blank\"\u003eCertification Certificate Sample\u003c\/a\u003e \u003cbr\u003e\u003ca href=\"\/index.php\/Accreditations\"\u003eView ISO Scope and Certificates\u003c\/a\u003e\n\n\u003cdiv\u003e\n\u003cb\u003eRockwell Test Blocks manufactured in accordance to the latest Rockwell E18 Revision\u003c\/b\u003e\u003cbr\u003e \u003cbr\u003eRockwell hardness testing is a fast and inexpensive test. The simplicity in the operation of a Rockwell hardness testing machine provides the added advantage that Rockwell hardness testing does not generally require a highly skilled operator to perform. The test is useful for material selection, for process and quality control, and for acceptance testing of commercial products. Rockwell hardness scales are divided into two categories: regular Rockwell scales and superficial Rockwell scales. Both categories of tests use the same types of indenters. The regular Rockwell hardness testing scales use heavier force (load) levels. For these scales, the preliminary force (minor load) level is 10 kgf and the standard total force (load) levels may be 60 kgf, 100 kgf or 150 kgf. The superficial Rockwell hardness testing scales use lighter force (load) levels, typically for use on thinner materials. For the superficial Rockwell scales, the preliminary force (load) level is 3 kgf and the standard total force (load) levels may be 15 kgf, 30 kgf or 45 kgf. The Rockwell hardness test method consists of indenting the test material with a diamond cone or hardened steel ball indenter. The indenter is forced into the test material under a preliminary minor load F0 (Fig. 1A) usually 10 kgf. When equilibrium has been reached, an indicating device, which follows the movements of the indenter and so responds to changes in depth of penetration of the indenter is set to a datum position. While the preliminary minor load is still applied an additional major load is applied with resulting increase in penetration (Fig. 1B). When equilibrium has again been reach, the additional major load is removed but the preliminary minor load is still maintained. Removal of the additional major load allows a partial recovery, so reducing the depth of penetration (Fig. 1C). The permanent increase in depth of penetration, resulting from the application and removal of the additional major load is used to calculate the Rockwell hardness number. \u003cbr\u003e\u003cbr\u003e \u003cb\u003e Best Practices for Rockwell Hardness Testing\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eThe indenter and anvil should be clean and well seated\u003c\/li\u003e\n\u003cli\u003eThe surface to be tested should be clean and dry, smooth, and free from oxide. A rough-ground surface is usually adequate for the Rockwell hardness test\u003c\/li\u003e\n\u003cli\u003eThe surface should be flat and perpendicular to the indenter\u003c\/li\u003e\n\u003cli\u003eTests on cylindrical surfaces will give low readings, the error depending on the curvature, load, indenter, and hardness of the material. Theoretical and empirical corrections for this effect have been published\u003c\/li\u003e\n\u003cli\u003eThe thickness of the specimen should be such that a mark or bulge is not produced on the reverse side of the piece. It is recommended that the thickness be at least 10 times the depth of the indentation. The spacing between indentations should be three to five times the diameter of the indentation. Rockwell hardness test blocks are designed to be used only on one side and the indents no closer to the block's edge than .040\"\u003c\/li\u003e\n\u003cli\u003eThe speed of application of the load should be standardized. This is done by adjusting the dashpot on the Rockwell hardness tester. Variations in rockwell hardness can be appreciable in very soft materials unless the rate of load application is carefully controlled\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch2\u003eTypical Application of Rockwell Hardness Testing Scales\u003c\/h2\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eHRA - Cemented carbides, thin steel and shallow case hardened steel\u003c\/li\u003e\n\u003cli\u003eHRB - Copper alloys, soft steels, aluminum alloys, malleable irons, etc.\u003c\/li\u003e\n\u003cli\u003eHRC - Steel, hard cast irons, case hardened steel and other materials harder than 100 HRB\u003c\/li\u003e\n\u003cli\u003eHRD - Thin steel and medium case hardened steel and pearlitic malleable iron\u003c\/li\u003e\n\u003cli\u003eHRE - Cast iron, aluminum and magnesium alloys, bearing metals\u003c\/li\u003e\n\u003cli\u003eHRF - Annealed copper alloys, thin soft sheet metals\u003c\/li\u003e\n\u003cli\u003eHRG - Phosphor bronze, beryllium copper, malleable irons HRH . . . . Aluminum, zinc, lead\u003c\/li\u003e\n\u003cli\u003eHRK - Phosphor bronze, beryllium copper, malleable irons HRH . . . . Aluminum, zinc, lead\u003c\/li\u003e\n\u003cli\u003eHRL - Phosphor bronze, beryllium copper, malleable irons HRH . . . . Aluminum, zinc, lead\u003c\/li\u003e\n\u003cli\u003eHRM - Soft bearing metals, plastics and other very soft materials\u003c\/li\u003e\n\u003cli\u003eHRP - Soft bearing metals, plastics and other very soft materials\u003c\/li\u003e\n\u003cli\u003eHRR - Soft bearing metals, plastics and other very soft materials\u003c\/li\u003e\n\u003cli\u003eHRS - Soft bearing metals, plastics and other very soft materials\u003c\/li\u003e\n\u003cli\u003eHRV - Soft bearing metals, plastics and other very soft materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"WESTport Corp.","offers":[{"title":"A \/ 28.5","offer_id":44234660315172,"sku":"HRA 28.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"A \/ 33","offer_id":43883178852388,"sku":"HRA 33","price":162.0,"currency_code":"USD","in_stock":true},{"title":"A \/ 37.5","offer_id":43883178885156,"sku":"HRA 37.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"A \/ 41.5","offer_id":43883178917924,"sku":"HRA 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0","offer_id":44234660347940,"sku":"HRBW 0","price":211.0,"currency_code":"USD","in_stock":true},{"title":"B \/ 10","offer_id":43883179212836,"sku":"HRBW 10","price":211.0,"currency_code":"USD","in_stock":true},{"title":"B \/ 25","offer_id":43883179245604,"sku":"HRBW 25","price":162.0,"currency_code":"USD","in_stock":true},{"title":"B \/ 35","offer_id":43883179278372,"sku":"HRBW 35","price":162.0,"currency_code":"USD","in_stock":true},{"title":"B \/ 45","offer_id":43883179311140,"sku":"HRBW 45","price":162.0,"currency_code":"USD","in_stock":true},{"title":"B \/ 55","offer_id":43883179343908,"sku":"HRBW 55","price":162.0,"currency_code":"USD","in_stock":true},{"title":"B \/ 65","offer_id":43883179376676,"sku":"HRBW 65","price":162.0,"currency_code":"USD","in_stock":true},{"title":"B \/ 75","offer_id":43883179409444,"sku":"HRBW 75","price":162.0,"currency_code":"USD","in_stock":true},{"title":"B \/ 85","offer_id":43883179442212,"sku":"HRBW 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51.5","offer_id":43883179737124,"sku":"HRD 51.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"D \/ 59","offer_id":43883179769892,"sku":"HRD 59","price":162.0,"currency_code":"USD","in_stock":true},{"title":"D \/ 67","offer_id":43883179802660,"sku":"HRD 67","price":162.0,"currency_code":"USD","in_stock":true},{"title":"D \/ 73","offer_id":43883179835428,"sku":"HRD 73","price":162.0,"currency_code":"USD","in_stock":true},{"title":"E \/ 57","offer_id":43883179868196,"sku":"HRE 57","price":191.0,"currency_code":"USD","in_stock":true},{"title":"E \/ 62.5","offer_id":43883179900964,"sku":"HRE 62.5","price":211.0,"currency_code":"USD","in_stock":true},{"title":"E \/ 68.5","offer_id":43883179933732,"sku":"HRE 68.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"E \/ 75","offer_id":43883179966500,"sku":"HRE 75","price":162.0,"currency_code":"USD","in_stock":true},{"title":"E \/ 78","offer_id":43883179999268,"sku":"HRE 78","price":162.0,"currency_code":"USD","in_stock":true},{"title":"E \/ 84","offer_id":43883180032036,"sku":"HRE 84","price":162.0,"currency_code":"USD","in_stock":true},{"title":"E \/ 90","offer_id":43883180064804,"sku":"HRE 90","price":162.0,"currency_code":"USD","in_stock":true},{"title":"E \/ 96","offer_id":43883180097572,"sku":"HRE 96","price":162.0,"currency_code":"USD","in_stock":true},{"title":"F \/ 57","offer_id":43883180130340,"sku":"HRF 57","price":211.0,"currency_code":"USD","in_stock":true},{"title":"F \/ 63","offer_id":43883180163108,"sku":"HRF 63","price":211.0,"currency_code":"USD","in_stock":true},{"title":"F \/ 68.5","offer_id":43883180195876,"sku":"HRF 68.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"F \/ 74","offer_id":43883180228644,"sku":"HRF 74","price":162.0,"currency_code":"USD","in_stock":true},{"title":"F \/ 77","offer_id":43883180261412,"sku":"HRF 77","price":162.0,"currency_code":"USD","in_stock":true},{"title":"F \/ 82.5","offer_id":43883180294180,"sku":"HRF 82.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"F \/ 88","offer_id":43883180326948,"sku":"HRF 88","price":162.0,"currency_code":"USD","in_stock":true},{"title":"F \/ 94","offer_id":43883180359716,"sku":"HRF 94","price":162.0,"currency_code":"USD","in_stock":true},{"title":"F \/ 99.5","offer_id":43883180392484,"sku":"HRF 99.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"G \/ 10","offer_id":43883180425252,"sku":"HRG 10","price":162.0,"currency_code":"USD","in_stock":true},{"title":"G \/ 25","offer_id":43883180458020,"sku":"HRG 25","price":162.0,"currency_code":"USD","in_stock":true},{"title":"G \/ 41","offer_id":43883180490788,"sku":"HRG 41","price":162.0,"currency_code":"USD","in_stock":true},{"title":"G \/ 57.5","offer_id":43883180523556,"sku":"HRG 57.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"G \/ 66","offer_id":43883180556324,"sku":"HRG 66","price":162.0,"currency_code":"USD","in_stock":true},{"title":"H \/ 87","offer_id":43883180589092,"sku":"HRH 87","price":211.0,"currency_code":"USD","in_stock":true},{"title":"H \/ 90.5","offer_id":43883180621860,"sku":"HRH 90.5","price":211.0,"currency_code":"USD","in_stock":true},{"title":"H \/ 94","offer_id":43883180654628,"sku":"HRH 94","price":162.0,"currency_code":"USD","in_stock":true},{"title":"H \/ 99.5","offer_id":43883180687396,"sku":"HRH 99.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 21","offer_id":43883180720164,"sku":"HRK 21","price":211.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 30","offer_id":43883180752932,"sku":"HRK 30","price":211.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 38","offer_id":43883180785700,"sku":"HRK 38","price":162.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 47","offer_id":43883180818468,"sku":"HRK 47","price":162.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 51.5","offer_id":43883180851236,"sku":"HRK 51.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 60","offer_id":43883180884004,"sku":"HRK 60","price":162.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 68.5","offer_id":43883180916772,"sku":"HRK 68.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 77.5","offer_id":43883180949540,"sku":"HRK 77.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 86","offer_id":43883180982308,"sku":"HRK 86","price":162.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 94.5","offer_id":43883181015076,"sku":"HRK 94.5","price":162.0,"currency_code":"USD","in_stock":true},{"title":"K \/ 98.5","offer_id":43883181047844,"sku":"HRK 98.5","price":162.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/RockwellTestBlock.png?v=1782961174"},{"product_id":"rockwell-superficial-test-block","title":"Rockwell Superficial Test Block","description":"\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/RockCertSample.pdf?430831550652381705\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCertification Certificate Sample\u003c\/a\u003e \u003cbr\u003e\u003ca href=\"\/index.php\/Accreditations\"\u003eView ISO Scope and Certificates\u003c\/a\u003e\n\u003cdiv\u003e\n\n\u003cb\u003eRockwell Test Blocks manufactured in accordance to the latest Rockwell E18 Revision\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e Rockwell hardness testing is a fast and inexpensive test. The simplicity in the operation of a Rockwell hardness testing machine provides the added advantage that Rockwell hardness testing does not generally require a highly skilled operator to perform. The test is useful for material selection, for process and quality control, and for acceptance testing of commercial products. Rockwell hardness scales are divided into two categories: regular Rockwell scales and superficial Rockwell scales. Both categories of tests use the same types of indenters. The regular Rockwell hardness testing scales use heavier force (load) levels. For these scales, the preliminary force (minor load) level is 10 kgf and the standard total force (load) levels may be 60 kgf, 100 kgf or 150 kgf. The superficial Rockwell hardness testing scales use lighter force (load) levels, typically for use on thinner materials. For the superficial Rockwell scales, the preliminary force (load) level is 3 kgf and the standard total force (load) levels may be 15 kgf, 30 kgf or 45 kgf. The Rockwell hardness test method consists of indenting the test material with a diamond cone or hardened steel ball indenter. The indenter is forced into the test material under a preliminary minor load F0 (Fig. 1A) usually 10 kgf. When equilibrium has been reached, an indicating device, which follows the movements of the indenter and so responds to changes in depth of penetration of the indenter is set to a datum position. While the preliminary minor load is still applied an additional major load is applied with resulting increase in penetration (Fig. 1B). When equilibrium has again been reach, the additional major load is removed but the preliminary minor load is still maintained. Removal of the additional major load allows a partial recovery, so reducing the depth of penetration (Fig. 1C). The permanent increase in depth of penetration, resulting from the application and removal of the additional major load is used to calculate the Rockwell hardness number.\n\n\u003ch2\u003eBest Practices for Rockwell Hardness Testing\u003c\/h2\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eThe indenter and anvil should be clean and well seated\u003c\/li\u003e\n\u003cli\u003eThe surface to be tested should be clean and dry, smooth, and free from oxide. A rough-ground surface is usually adequate for the Rockwell hardness test\u003c\/li\u003e\n\u003cli\u003eThe surface should be flat and perpendicular to the indenter\u003c\/li\u003e\n\u003cli\u003eTests on cylindrical surfaces will give low readings, the error depending on the curvature, load, indenter, and hardness of the material. Theoretical and empirical corrections for this effect have been published\u003c\/li\u003e\n\u003cli\u003eThe thickness of the specimen should be such that a mark or bulge is not produced on the reverse side of the piece. It is recommended that the thickness be at least 10 times the depth of the indentation. The spacing between indentations should be three to five times the diameter of the indentation. Rockwell hardness test blocks are designed to be used only on one side and the indents no closer to the block's edge than .040\"\u003c\/li\u003e\n\u003cli\u003eThe speed of application of the load should be standardized. This is done by adjusting the dashpot on the Rockwell hardness tester. Variations in rockwell hardness can be appreciable in very soft materials unless the rate of load application is carefully controlled\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch2\u003eTypical Application of Rockwell Hardness Testing Scales\u003c\/h2\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eHRA - Cemented carbides, thin steel and shallow case hardened steel\u003c\/li\u003e\n\u003cli\u003eHRB - Copper alloys, soft steels, aluminum alloys, malleable irons, etc.\u003c\/li\u003e\n\u003cli\u003eHRC - Steel, hard cast irons, case hardened steel and other materials harder than 100 HRB\u003c\/li\u003e\n\u003cli\u003eHRD - Thin steel and medium case hardened steel and pearlitic malleable iron\u003c\/li\u003e\n\u003cli\u003eHRE - Cast iron, aluminum and magnesium alloys, bearing metals\u003c\/li\u003e\n\u003cli\u003eHRF - Annealed copper alloys, thin soft sheet metals\u003c\/li\u003e\n\u003cli\u003eHRG - Phosphor bronze, beryllium copper, malleable irons HRH . . . . Aluminum, zinc, lead\u003c\/li\u003e\n\u003cli\u003eHRK - Phosphor bronze, beryllium copper, malleable irons HRH . . . . Aluminum, zinc, lead\u003c\/li\u003e\n\u003cli\u003eHRL - Phosphor bronze, beryllium copper, malleable irons HRH . . . . 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Each Brinell test block is heat treated in a computer-controlled vacuum heat treat furnace to insure maximum consistency and repeatability. They are then blanched; ground, hand lapped and diamond polished providing you with impressions that are easy to read with precision accuracy.\u003c\/p\u003e\n\u003cp\u003eBrinell test blocks are calibrated with five impressions and certified in accordance to ASTM E-10 and ISO 6506 on hardness testers calibrated and traceable to NIST. The arithmetic mean of the five impressions is inscribed on the block both in BHN Hardness and diameter in millimeters. Each test block is calibrated with Tungsten carbide indenters. HB30 designates 3000 kg \/ 10 mm ball - the most common Brinell scale, HB5 designates 500 kg \/10 mm ball and HB15 designates 1500 kg \/ 10 mm ball.\u003c\/p\u003e\n\u003cp\u003eFinal inspection of Brinell test blocks are preformed in our state of the art ISO\/IEC 17025 accredited laboratories. All test blocks are manufactured in accordance with the latest ASTM E10 Brinell revisions. Each test block comes with a long form certificate of calibration verifying the readings and that the test measurement equipment used was calibrated and traceable to NIST. Available in steel or aluminum in hardness ranges of HB75 to HB525. Test block dimensions: Length 6\" (15.24 cm), Width 2 ½” (5.08 cm), Thickness 5\/8\" (1.59 cm)\u003c\/p\u003e\n\u003ch2\u003e\u003ca\u003eBrinell Standards\u003c\/a\u003e\u003c\/h2\u003e\n\u003ch2\u003eInternational \u003ca\u003e(ISO)\u003c\/a\u003e and European \u003ca\u003e(CEN)\u003c\/a\u003e Standard\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEN ISO 6506-1 : Metallic materials - Brinell hardness test - Part 1 : test method.\u003c\/li\u003e\n\u003cli\u003eEN ISO 6506-2 : Metallic materials - Brinell hardness test - Part 2 : verification and calibration of testing machine.\u003c\/li\u003e\n\u003cli\u003eEN ISO 6506-3 : Metallic materials - Brinell hardness test - Part 3 : calibration of reference blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUS standard \u003ca\u003e(ASTM International)\u003c\/a\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca\u003eASTM\u003c\/a\u003e E10 : : Standard method for Brinell hardness of metallic 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