Chapter 9024 — Customs Tariff Headings

Bend Testing Machine for Metals

A guided bend testing machine that applies controlled bending force to metal bars or sheets to assess ductility and formability. It is used to evaluate the mechanical properties of metals, specifically their ability to withstand deformation without cracking, making it essential for quality control of rebar and tubes.

Brinell Hardness Testing Machine

A hydraulic or mechanical hardness tester that indents metal surfaces with a carbide ball under high load, measuring the diameter of the indentation to calculate the Brinell hardness number. It is specifically designed for testing the hardness of metals, a key mechanical property, and falls under the tariff item for metal testing machines.

Charpy Impact Testing Machine

A pendulum-based impact testing machine that strikes notched metal specimens to measure impact energy absorption, indicating the toughness and brittleness of metals. This apparatus is used to test the mechanical properties of metals, specifically their resistance to sudden forces, and is classified under the tariff item for metal testing machines.

Digital Fatigue Testing Machine

A servo-hydraulic system that cyclically loads metal samples to evaluate fatigue life under repeated stress, featuring digital controls and data logging. It is designed to test the strength and elasticity of metals over time, making it a machine for testing mechanical properties of metals under tariff item 9024.10.00.

Metallographic Grinding Machine

A metallographic grinding machine is a precision appliance used to prepare metal samples for microscopic examination and hardness testing. It grinds and polishes metal surfaces to a mirror finish, which is essential for accurately assessing mechanical properties like microstructure and hardness. This machine falls under tariff item 9024.10.00 as it is an accessory appliance integral to testing the mechanical properties of metals.

Portable Metal Hardness Tester

A handheld rebound hammer device that measures metal hardness via impact velocity ratio, rebounding off the surface. It is a portable appliance for testing the mechanical properties of metals in the field, suitable for in-service inspections, and falls under the tariff item for metal testing machines.

Rockwell Hardness Tester

A benchtop machine that measures the hardness of metals using a diamond or steel ball indenter under specific loads, producing Rockwell scale readings. It is a dedicated appliance for testing the hardness of metals, a key mechanical property, and is classified under tariff item 9024.10.00.

Shear Strength Testing Fixture

A shear strength testing fixture is a specialized accessory that holds metal coupons under lateral force to measure their shear strength properties. It is designed to be used with universal test frames, which are machines for testing the mechanical properties of materials. This fixture is classified under tariff item 9024.10.00 as a part for metal testing machines, per Chapter 90 Note 2.

Universal Tensile Testing Machine

An electromechanical device that applies tension, compression, or bending forces to metal samples to determine yield strength, ultimate tensile strength, and elongation. It is used to test the mechanical properties of metals, specifically strength and elasticity, and falls under tariff item 9024.10.00.

Vickers Microhardness Tester

A precision instrument using a diamond pyramid indenter for micro-scale hardness testing on metal thin sections and coatings, with automated optical measurement. It is designed to test the hardness of metals at a micro level, a mechanical property, and is classified under tariff item 9024.10.00.

Brinell Hardness Testing Machine

A Brinell hardness testing machine that uses an optical microscope to measure the diameter of an indentation made by a steel ball under a specified load. It is used to determine the hardness of metals by evaluating their resistance to permanent indentation, a key mechanical property.

Charpy Impact Tester

A Charpy impact tester that uses a pendulum to strike a notched metal specimen and measures the energy absorbed during fracture. It is used to evaluate the toughness and impact resistance of materials, which are mechanical properties covered by this tariff item.

Compression Testing Machine for Plastics

A servo-hydraulic compression testing machine specifically designed to measure the compressive strength of rigid plastic specimens. It applies controlled compressive loads to determine the material's mechanical properties, such as strength and deformation under pressure.

Drop Weight Impact Tester

A drop weight impact tester that releases a weighted impactor onto a specimen to measure its fracture toughness and impact resistance. This machine evaluates the mechanical properties of materials under dynamic loading conditions, fitting the scope of this tariff item.

Fabric Tear Strength Tester

An Elmendorf-type pendulum device used to measure the force required to propagate a tear in woven or nonwoven fabrics. It tests the tear strength of textiles, which is a mechanical property covered by this tariff item.

Metal Fatigue Testing Machine

A servo-hydraulic system that applies cyclic loading to metal components to study fatigue life and crack propagation. It tests the mechanical properties of materials under repeated stress, which is within the scope of this tariff item.

Paper Burst Strength Tester

A Mullen burst tester that applies hydraulic pressure to paper samples until they rupture, measuring burst resistance. It tests the strength and compressibility of paper materials, which are mechanical properties covered by this tariff item.

Rockwell Hardness Tester

A benchtop Rockwell hardness tester that uses a diamond or steel ball indenter under specified loads to measure the hardness of metals. It determines the material's resistance to indentation, a key mechanical property.

Rubber Elongation Tester

An automated tensile testing machine that measures the percentage elongation at break for vulcanized rubber compounds. It tests the elasticity of rubber materials, which is a mechanical property covered by this tariff item.

Shore Durometer

A handheld spring-loaded durometer that measures the hardness of rubber and plastics by the depth of indenter penetration. It tests the hardness of elastomeric materials, which is a mechanical property covered by this tariff item.

Textile Yarn Strength Tester

An automated device that measures the tensile strength and elongation of yarn and fabrics by applying controlled force until breakage. It tests the strength and elasticity of textiles, which are mechanical properties covered by this tariff item.

Torsion Testing Machine

An electromechanical device that applies rotational force to specimens to measure shear modulus and torsional strength. It tests the elasticity and mechanical properties of materials under torsional stress, fitting the scope of this tariff item.

Universal Testing Machine

A versatile electromechanical universal testing machine capable of tensile, compression, and bending strength tests on metals, plastics, and composites up to 100 kN load capacity. It tests the strength and other mechanical properties of materials, which are covered by this tariff item.

Vicat Needle Apparatus

A Vicat needle apparatus used to determine the normal consistency and setting time of hydraulic cement using a weighted needle penetration test. It tests the compressibility and mechanical properties of cementitious materials, which are covered by this tariff item.

Wood Bending Strength Tester

A three-point bending apparatus for determining the modulus of rupture and elasticity of wood and wood-based panels. It tests the mechanical properties of wood materials, such as strength and elasticity, which are covered by this tariff item.

Bend Testing Jig for Metal Bars

A three-point bend testing jig for metal bars, featuring hardened steel rollers for guided deflection testing. It is used to determine the flexibility and ductility of metal bars and plates, and is classified as a part of metal testing appliances under tariff item 9024.90.00.

Brinell Hardness Tester Ball Indenter

A tungsten carbide 10mm ball indenter used for Brinell hardness testing of metals. It creates standardized impressions under heavy loads, making it an essential part for testing large forgings and castings, classified under tariff item 9024.90.00.

Brinell Hardness Testing Ball Indenter

A 10mm tungsten carbide ball indenter used in Brinell hardness testing machines. It creates a standardized indentation on large forgings and castings, which is then measured optically to determine the HB hardness scale. This is an essential accessory for hardness testing equipment under heading 90.24.

Charpy Impact Test Striker

A precision-machined striker for Charpy pendulum impact testers, used to measure material toughness at various temperatures. It features standardized V-notch geometry per ASTM E23 and is a critical accessory for mechanical property testing machines. This striker is classified as an accessory under tariff item 9024.90.00.

Compression Testing Machine Metal Platens

Parallel ground steel platens, 200mm in diameter, used in compression testing machines to distribute uniform load on metal cylinders. These platens are essential for determining compressive strength and are classified as parts under tariff item 9024.90.00.

Compression Test Machine Spherical Seating

A self-aligning spherical seat for concrete cylinder compression testers, ensuring uniform load distribution up to 2000kN per ASTM C39 standards. This accessory is used in compressibility testing machines and is essential for accurate test results. It falls under tariff item 9024.90.00 as a part of mechanical property testing equipment.

Concrete Cylinder Compression Platens

Concrete cylinder compression platens with neoprene padding, used as accessories in compression testing machines to distribute load evenly on concrete cylinders during strength tests. They are classified under tariff item 9024.90.00 as parts and accessories for machines testing the mechanical properties of materials.

Creep Test Furnace Specimen Grips

High-temperature collet grips for creep rupture testing machines, operating from 20-1200°C to measure long-term material deformation. Constructed from Inconel for durability under extreme conditions. These grips are accessories for mechanical property testing machines under tariff item 9024.90.00.

Creep Testing Furnace Specimen Holder

A high-temperature alloy specimen holder for creep testing machines, designed to position metal samples under constant load at elevated temperatures up to 1200°C. This accessory is used for long-term metal property testing and is classified under tariff item 9024.90.00.

Digital Load Cell Transducer for UTM

Digital load cell transducer designed as a replacement or upgrade accessory for universal testing machines (UTMs), measuring force during strength and elasticity tests on various materials. It falls under tariff item 9024.90.00 as a part or accessory for mechanical property testing apparatus.

Drop Weight Impact Tester Striker Pin

Tungsten carbide striker pin used as a replacement part in drop weight impact testers, which measure material toughness and energy absorption. This accessory is classified under tariff item 9024.90.00 as a part for machines testing mechanical properties of materials.

Drop Weight Tear Tester Striker Pin

A tungsten carbide striker pin for drop weight tear testing machines, used to initiate fracture propagation in pipeline steel specimens per ASTM E208. This part is essential for metal property testing and is classified under tariff item 9024.90.00.

Drop Weight Tear Test Striker

A pressurized striker assembly for Drop Weight Tear Testing (DWTT) machines, used to test pipeline steel fracture properties per API 5L3. It is designed for high-velocity impact testing and is a part of mechanical property testing equipment. This striker falls under tariff item 9024.90.00.

Elevated Temperature Tensile Grip

Water-cooled metal grips for high-temperature tensile testing of metals up to 1000°C in furnace-equipped machines. These grips are used for thermal mechanical property testing and are classified as parts under tariff item 9024.90.00.

Extensometer Strain Gauge Clips

High-precision knife-edge clips for clip-on extensometers, used to measure elongation during tensile tests on metals and composites. They are temperature resistant up to 1200°C for hot testing applications. These clips are parts for elasticity testing appliances under tariff item 9024.90.00.

Fatigue Test Clip-On Extensometer Side Pins

Ceramic-coated side pins for high-cycle fatigue extensometers, maintaining alignment during millions of strain cycles in metals fatigue testing. These precision parts are essential for accurate fatigue testing and are classified under tariff item 9024.90.00.

Fatigue Testing Machine Metal Clamp Assembly

A hydraulic metal clamp assembly for cyclic fatigue testing machines, used to grip specimens for high-cycle fatigue strength determination in metals. This assembly is a part of appliances testing metal mechanical properties and is classified under tariff item 9024.90.00.

Flexural Bend Test Fixture

A three-point bend test fixture for flexural strength testing of plastics and composites per ASTM D790. It features an adjustable span with precision rollers and is an accessory for mechanical property testing machines. This fixture falls under tariff item 9024.90.00.

Hardness Tester Load Cell Sensor Mount

An aluminum precision mount for load cell sensors in automated metal hardness testers, ensuring accurate force transmission during indentation. This mount is a part of metal testing machines and is classified under tariff item 9024.90.00.

Impact Testing Machine Charpy Striker

A precision Charpy V-notch striker for pendulum impact testers, designed to fracture standardized metal specimens to measure toughness at various temperatures. This accessory is used for metal mechanical property testing and is classified under tariff item 9024.90.00.

Metal Fatigue Test Specimen Grip Collet

Precision collet grips designed to hold cylindrical metal specimens securely in fatigue testing machines, which assess cyclic strength and elasticity. These grips are classified under tariff item 9024.90.00 as parts and accessories for mechanical property testing apparatus.

Metal Ultrasonic Testing Calibration Block Mount

A fixture mount for IIW-type steel calibration blocks in ultrasonic metal flaw detection testers, ensuring precise sound velocity measurement. Though primarily used in non-destructive testing, its mechanical calibration function classifies it under tariff item 9024.90.00.

Paper Burst Strength Mullen Tester Diaphragm

Replaceable rubber diaphragm for Mullen burst testers, which measure the compressibility and strength of paper and paperboard. This part is classified under tariff item 9024.90.00 as an accessory for machines testing the mechanical properties of materials.

Paper Burst Tester Diaphragm Clamps

Precision clamps for securing rubber diaphragms in Mullen burst testers, used for paper and board strength testing. They ensure leak-free specimen clamping per TAPPI T403 and are accessories for compressibility testers. These clamps fall under tariff item 9024.90.00.

Plastic Compression Mold Fixture Adapter

Adapter fixture for holding plastic specimens in compression testing machines, used to evaluate material compressibility and strength. It is classified under tariff item 9024.90.00 as an accessory for machines testing the mechanical properties of materials.

Polymer Flexure Test Span Support Fixture

Three-point bending support fixture for polymer flexural strength and elasticity testing, designed to meet ASTM D790 standards. This fixture is classified under tariff item 9024.90.00 as a part for machines testing the mechanical properties of materials.

Rockwell Hardness Tester Anvil Support

A precision-ground steel anvil support block for Rockwell hardness testing machines, used to securely hold metal specimens during indentation tests. This essential part ensures accurate load application on metals and is classified under tariff item 9024.90.00.

Rockwell Hardness Tester Indenter

A diamond or carbide-tipped indenter specifically designed for Rockwell hardness testing machines used on metals and alloys. It applies precise load to create an indentation for hardness measurement. This indenter is classified under tariff item 9024.90.00 as a part of hardness testing equipment.

Rubber Durometer Calibration Block

NIST-traceable test blocks (30A, 50D, 90A Shore scales) for calibrating durometers testing rubber and plastics hardness. They are Micro-ISO 48 compliant and serve as accessories for hardness testers. These calibration blocks fall under tariff item 9024.90.00.

Rubber Durometer Probe Tip Replacement

Replacement probe tip for Shore durometer testers, used to measure the hardness and compressibility of rubber and elastomers. This part is classified under tariff item 9024.90.00 as an accessory for machines testing the mechanical properties of materials.

Shear Testing Fixture for Metal Coupons

A double-notched fixture for single-lap shear testing of metal coupons, used in adhesive bond strength evaluation on metal substrates. This accessory is for metal property testing appliances and is classified under tariff item 9024.90.00.

Textile Yarn Tensile Strength Extensometer

Contactless extensometer accessory for measuring elongation in textile yarns and fibers during tensile testing on universal materials testers. It is classified under tariff item 9024.90.00 as a part for machines testing the elasticity of materials.

Textile Yarn Tensile Tester Pneumatic Grips

Pneumatic side-action grips for yarn strength testers, preventing slippage during high-speed tensile tests up to 5000N. They are designed for textile fibers and filaments and are parts for textile testing machines. These grips fall under tariff item 9024.90.00.

Torsion Testing Machine Metal Fixture

A collet-style metal fixture for securing cylindrical metal specimens in torsion strength testing machines, used to measure shear modulus and torsional yield strength. This fixture is classified as a part for metal testing appliances under tariff item 9024.90.00.