Macro Hardness Testers
Description
Macro hardness testers are devices used to measure the hardness of materials by determining their resistance to deformation under a specific load. These testers apply a known force to an indenter, which then creates an indentation on the material's surface. The size of this indentation is used to calculate the hardness value, which is expressed as a number followed by an index indicating the type of indenter used, such as Vickers or Brinell .
Working Principle
Macro hardness testers operate by pressing an indenter, which can be conical, pyramidal, or spherical, into the surface of a material with a known force. The depth or size of the indentation left by the indenter is measured to determine the hardness of the material. This method is useful because it provides a quantitative measure of a material's resistance to plastic deformation, which is an important property for assessing material strength and durability . The testers are particularly useful for evaluating the hardness of heat-treated materials, including metals and alloys, by providing a comparative measure of their resistance to deformation .
Applications
Macro hardness testers are widely used in various industries to assess the hardness of metals, ceramics, and composites. Specific applications include testing the hardness of heat-treated steel components, evaluating the quality of surface coatings, and determining the effectiveness of surface treatments. They are also used in quality control processes to ensure that materials meet specified hardness requirements .
Advantages over other Hardness Testers
One advantage of macro hardness testers is their ability to test larger samples with higher loads compared to micro and nano hardness testers. This makes them suitable for testing bulk materials and components that cannot be easily sectioned or prepared for smaller-scale testing. Additionally, macro hardness testers can provide a more comprehensive assessment of a material's overall hardness, as they measure the resistance to deformation over a larger area .
Limitations
Macro hardness testers have limitations, including the requirement for a relatively flat and smooth surface to ensure accurate measurements. The size of the indentation can also be a limitation when testing small or thin samples, as it may cause significant deformation or damage to the sample. Furthermore, the hardness value obtained is an empirical measure and may not directly correlate with other material properties, such as tensile strength, without additional experimental verification .
Considerations
When selecting a macro hardness tester, several factors should be considered. Initial costs can vary depending on the complexity and capabilities of the tester. Operating expenses may include the cost of consumables, such as indenters and calibration standards. Durability and maintenance costs are also important, as regular calibration and potential replacement of parts can impact long-term expenses. Accuracy is crucial, so ensuring that the tester is properly calibrated and maintained is essential for reliable results. Additionally, the specific requirements of the testing application, such as the size and shape of the samples, should be considered to ensure the tester is suitable for the intended use .
from AMETEK Sensors, Test & Calibration
The automatic 9000N Series Brinell hardness tester displays the hardness result without using a Brinell scope. Used for high volume testing without operator influence. Uses a Rockwell-type method with a standard Brinell ball and test load to read out directly in Brinell scales. [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell
- Test Load: 500 to 3000
from ZwickRoell LP
The DuraVision solves a wide variety of test tasks and is known for its efficiency in macro hardness testing applications. Even in harsh industrial environments, you can count on the reliable performance of this hardness tester, and always in accordance with currently applicable standards. The... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell; Rockwell; Vickers / Knoop; Carbon and Plastic Testing
from LECO Corporation
The AMH Series supports both microindentation and Macro/Vickers hardness testing in fully automatic and semi-automatic configurations for greater precision, accuracy, and efficiency. A patented method allows you to create a path for indentation patterns directly on an overview image of the part,... [See More]
- Test Method: Micro; Macro
- Mounting: Fixtured or Permanent
- Test: Vickers / Knoop
from Foundrax Engineering Products, Ltd.
The BRIN400 series of closed loop Brinell hardness testers represent the latest in Brinell hardness testing technology. They are robust, reliable, proven and designed to meet a customer ’s most demanding requirements in harsh industrial environments such as those found in foundries, forges and... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell
- Sample Height: 47.5
from AMETEK Sensors, Test & Calibration
The Newage KB Series is a popular, manually-controlled Brinell hardness tester that meets ASTM E-110. This lightweight, portable tester is ideal for virtually any size or shape of metal specimen. [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell
- Test Load: 1000 to 3000
from ZwickRoell LP
The ZHV30 low-load Vickers hardness tester covers Vickers and Knoop hardness tests to ISO 6507, ISO 4545 and ASTM E 384 in the load range from HV0.2 to HV30. For more sophisticated or for automated applications, PC controlled versions are available as semi or fully automatic systems based on the... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell; Vickers / Knoop
from LECO Corporation
LECO's LV Series Macro-Vickers Hardness Testing Systems offer an affordable testing system suitable for larger, heavier samples used in welding and other demanding applications. Models include analog and digital, with options to upgrade to automatic configurations. Up to three objectives on one... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Vickers / Knoop
- Test Load: 0.3000 to 50
from Foundrax Engineering Products, Ltd.
The Foundrax X-BHD and X-BHD-E series of heavy duty bridge type Brinell hardness testers are available in a range of sizes from small static bridge machines with vertical test head movement only to fully automatic machines with powered X, Y and Z movement over an integral test bed giving an... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell
from AMETEK Sensors, Test & Calibration
A basic Brinell hardness tester with semi-automatic operation. NB3010 is a cost-effective Brinell tester using deadweights with a pneumatic load system to apply and remove the loads. Operates in most all Brinell scales. [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell
- Test Load: 62.5 to 3000
from ZwickRoell LP
Robust and versatile - the key characteristics of the DuraJet. Through electronic load application and a load range of 9.8 N to 2,450 N (1 kg to 250 kg), this hardness testing machine covers the complete Rockwell hardness range. But that's not all, this hardness tester can do even more: Plastics and... [See More]
- Test Method: Superficial; Micro; Macro
- Mounting: Handheld or Portable
- Test: Brinell; Rockwell; Vickers / Knoop; Super Rockwell, Plastics Testing, Carbon Testing
from LECO Corporation
LECO's LR Series Rockwell-Type Hardness Tester is built to handle high-volume workloads while maintaining accuracy and repeatability. A variety of models —including analog, digital, and twin testers —are designed to suit specific needs and applications. User-friendly operation panel. [See More]
- Test Method: Micro; Macro
- Mounting: Fixtured or Permanent
- Test: Rockwell
from Foundrax Engineering Products, Ltd.
The Foundrax BRINscan MKIII is a high-speed heavy duty fully-automatic Brinell hardness tester fitted with a BRINtronic automatic Brinell microscope, suitable for off-line and in-line use. The Foundrax BRINscan MkIII has been proven in operational use over many years to be capable of performing... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell
from AMETEK Sensors, Test & Calibration
The INDENTRON ®. Series hardness testers feature an innovatve cantlevered indenter confguraton that eliminates frictonal inconsistencies. typical of compettve testng systems. Using precision dead weights, the INDENTRON system ensures precise, accurate and repeatable. measurements. The dead... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Rockwell
- Test Load: 60 to 150
from ZwickRoell LP
The ZwickRoell/ZHV 10 has a proven track record, especially in determining Vickers hardness. Two versions are available: With the analog instrument the hardness value is evaluated using hardness tables The PC version uses testXpert hardness edition testing software to evaluate results [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Vickers / Knoop; Ritz hardness
from Foundrax Engineering Products, Ltd.
The portable Brinell hardness tester makes an authentic and accurate Brinell hardness test in whatever location and on whichever plane it is used. Features: Applies the full 29 420N (3000kgf) test force on a 10mm ball - other test forces and indenters available. Applies the full test force with an... [See More]
- Test Method: Macro
- Mounting: Handheld or Portable
- Test: Brinell
from AMETEK Sensors, Test & Calibration
The ME-2 system is an economical Rockwell hardness tester that is easy to calibrate, rarely requires service and provides good accuracy. Available in analog, basic digital, & advanced digital. [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Rockwell
- Test Load: 60 to 150
from ZwickRoell LP
The fully automatic ZHV30/zwickiLine testing machine with closed-loop technology reduces testing costs and minimizes operator influence-your guarantee for efficient, cost-effective low-force hardness testing. The ZHV30/zwickiLine can be controlled with either the testXpert hardness edition software,... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Vickers / Knoop
from Foundrax Engineering Products, Ltd.
The Foundrax model BHD and BHD-E radial arm Brinell hardness testers offer the user a range of test head options. These range from a simple machine using the Foundrax model 134 portable Brinell test head capable of indentation only and operating in a single Brinell hardness scale to a fully... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell
- Sample Height: 90
from AMETEK Sensors, Test & Calibration
With automatic operation the 7000 Series Brinell Tester provides a lot of capability in a basic Brinell tester package. The tester uses a hydraulic load system delivered through a Belleville spring measurement system which accurately controls the load. [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Brinell
- Test Load: 62.5 to 3000
from AMETEK Sensors, Test & Calibration
The Versitron Rockwell hardness testing system is the workhorse of hardness testing - designed to meet the toughest challenges: clamp large parts, operate in poor environments, and test high volumes - all with less service problems and less operator skill requirements. Available with 4 different... [See More]
- Test Method: Macro
- Mounting: Fixtured or Permanent
- Test: Rockwell
- Test Load: 60 to 150