Hardness Test Block

We offer the largest Hardness Test Block selection in the industry. If you don't see what you're looking for - Ask! All of our Hardness Test Blocks come with Certification. All the blocks are calibrated and accredited to ISO guide 25 and will meet automotive and aerospace standards. The HRC test blocks are calibrated on the new NIST level.

Rockwell Regular Hardness Test Block

Hardness Scale Test BlockPart No.indenterLoadRangesMaterial
A Scale RA10C Diamond60 KgA60 - A84Steel
A Scale RA20C Diamond60 KgA20 - A59Brass
A Scale RA30A Diamond (Carbide)60 KgA88 & upCarbide
B Scale RB101/16" Ball100 KgB10 - B92Brass
B Scale RB201/16" Ball100 KgB90 - B130Steel
C Scale RC10C Diamond150 KgAllSteel
D Scale RD10C Diamond100 KgAllSteel
E Scale RE101/8" Ball100 KgAllBrass
F Scale RF101/16" Ball60 KgAllBrass
G Scale RG101/16" Ball150 KgG2.5 - G64Brass
G Scale RG201/16" Ball150 KgG66 & upSteel
H Scale RH101/8" Ball60 KgAllBrass
K Scale RK101/8" Ball150 KgAllBrass
L Scale RL101/4" Ball60 KgAllBrass
M Scale RM101/4" Ball100 KgAllBrass
P Scale RP101/4" Ball150 KgAllBrass
R Scale RR101/2" Ball60 KgAllBrass
S Scale RS101/2" Ball100 KgAllBrass
V Scale RV101/2" Ball150 KgAllBrass
NOTE: Aluminum Test blocks are available in "B", "E", "F", "G", "H", "K" Scales, but ranges are more limited.

Rockwell Superficial Hardness Test Block

Hardness Scale Test BlockPart No.PenetratorLoadRangesMaterial
15N ScaleS15N10N Diamond15 KgAllSteel
30N ScaleS30N10N Diamond30 KgAllSteel
45N Scale S45N10N Diamond45 KgAllSteel
15T Scale S15T101/16" Ball15 KgAllBrass
30T Scale S30T101/16" Ball30 KgAllBrass
45T Scale S45T101/16" Ball45 KgAllBrass
15W Scale S15W101/8" Ball15 KgAllBrass
30W Scale S30W101/8" Ball30 KgAllBrass
45W Scale S45W101/8" Ball45 KgAllBrass
15X ScaleS15X101/4" Ball15 KgAllBrass
30X Scale S30X101/4" Ball30 KgAllBrass
45X ScaleS45X101/4" Ball45 KgAllBrass
15Y Scale S15Y101/2" Ball15 KgAllBrass
30Y ScaleS30Y101/2" Ball30 KgAllBrass
45Y ScaleS45Y101/2" Ball45 KgAllBrass


Rockwell Testing Accessories

Diamond Indenters
Part No:Description
P10100Standard "C" Diamond Indenter
P10200Standard "N" Diamond Indenter
P10300Carbide "A" Diamond Indenter
P1040"Versitron®" type "C" Diamond
P1045"Versitron®" type "N" Diamond
P10501"Indentron®" type "C" Diamond
P1060"Indentron®" type "N" Diamond
P1070"C" & "N" Combo Slip-in Diamond Indenter

Indentron® and Versitron® are registered trademarks of Newage Testing Instruments, Inc.

Each Diamond Indenter is mounted in conformity with its grain structure, to assure balanced pressure and prevent early wear or breakage. They are precision ground, lapped and polished. We also subject each Diamond Indenter to a strict performance test before it is approved and certified for sale.

Ball Indenters
Part No:Description
P201001/16" Ball Indenter Unit
P20151/16" Steel Balls (50 each)
P20551/16" Carbide Balls
P202001/8" Ball Indenter Unit
P20251/8" Steel Balls (25 each)
P20301/4" Ball Indenter Unit
P20351/4" Steel Balls
P20401/2" Ball Indenter Unit
P20651/2" Carbide Balls
Part No:Description
A1010Pedestal Spot (1/4") Anvil
A10201 1/2" Flat Anvil
A10302 1/2" Flat Anvil
A1040Shallow "V" Anvil
A1050Standard "V" Anvil
A10553 1/2" "V" Anvil
A1080Diamond Spot Anvil
Other Accessories
Part No:Description
A30208" Testing Table


Brinell Test Blocks and Accessories

All of our Brinell Test Blocks come certified to applicable standards. We adhere to a strict procedure for the calibration of these blocks, and the accuracy of the tester is maintained using a proving ring and load cell both traceable to N.I.S.T. The readings themselves are done using a stage micrometer also calibrated and traceable to N.I.S.T.

Brinell Hardness Test Blocks
Part No:DescriptionRange
B3000 3000 Kg Load 10mm BallAll Hardness Ranges
B20002000 Kg Load 10mm BallAll Hardness Ranges
B15001500 Kg Load 10mm BallAll Hardness Ranges
B10001000 Kg Load 10mm BallAll Hardness Ranges
B0500500 Kg Load 10mm BallAll Hardness Ranges
B0250250 Kg Load 10mm BallAll Hardness Ranges
B0187187.5 Kg Load 10mm BallAll Hardness Ranges
BT010Telebrineller Test BarsAll Hardness Ranges
Brinell Accessories
Part No:Description
P301010mm Steel Balls
P302010mm Carbide Balls
P30322.5 mm Carbide Balls
P30315 mm Carbide Balls


Micro Hardness Test Blocks

Our range of micro hardness test blocks exceed industry standards. All of our micro test blocks are mirror-polished and mounted to provide the best possible test surface.

Each mirror-polished Heavy Load Vickers test block has the same surface area provided by our Rockwell test blocks, so that you get the most test opportunities for your money.

Micro Hardness Test blocks
Part No:DescriptionRange
MV010Vickers (1 gram to 1,000 gram)All Ranges
MV020Heavy Load Vickers (1 Kg to 50 Kg)All Ranges
MK010Knoop (1 gram to 1,000 gram)All Ranges
Note: When ordering please specify Knoop or Vickers, Load and the Hardness Number you require.
Micro Hardness Accessories
Part No:Description
P1110Vickers Diamond Indenter*
*Vickers Indenter available for all of different makes. Please specify the make of your hardness tester when ordering.
P1120Knoop Diamond Indenter*
*Knoop Indenter available for all of different makes. Please specify the make of your hardness tester when ordering.


Master Calibration Kits

Our Master Calibration Kits are produced to provide our customers with the ultimate tool in Quality Control. Each kit contains a test block or blocks and the actual indenter unit that was used to calibrate them. By matching specific blocks to a specific indenter, a set relationship is established, and they can be eliminated as potential variables in the hardness test system. Should a problem arise, a master kit on hand allows you to quickly and accurately determine whether your hardness tester is the source.

Each block in our kits has been calibrated on a tester whose accuracy has been verified using N.I.S.T. traceable load and depth measuring devices. The individual test blocks are marked both with their own unique serial number AND the serial number of the indenter in the kit. All of our kits come with their own polished wood case, and certified to all the applicable standards.

C Scale Steel with C Diamond Indenter
Part No:Description
C20101 Block
C20203 Blocks
C20306 Blocks
B Scale Steel with B Diamond Indenter
Part No: (1/16" Ball Indenter)Description
C40101 Block
C40203 Blocks
C40306 Blocks
Part No: (1/8" Ball Indenter)Description
C42101 Block
C42203 Blocks
C42306 Blocks
C and N Scale Steel with C Diamond and N Diamond Indenter
Part No:Description
C35106 Blocks
Combination C Scale and B Scale
Part No:Description
C25106 Blocks


For more information about Hardness Test Blocks, Indenters & Accessories, please call us at 1.877.884.8378 or Click the button below.