Machines and appliances for testing metals
Machines and appliances for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for example, metals, wood, textiles, paper, plastics), and parts and accessories thereof: > Machines and appliances for testing metals
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 9024.10.00.00
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 falls under HTS 9024.10.00.00 as a dedicated appliance for testing the hardness mechanical property of metals. Commonly used in quality control for steel and alloy components.
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. Classified under HTS 9024.10.00.00 for testing strength and other mechanical properties specifically of metals. Essential for material qualification in aerospace and automotive industries.
Brinell Hardness Testing Machine
A hydraulic or mechanical tester that indents metal surfaces with a carbide ball under high load, measuring diameter to calculate Brinell hardness number. Falls under HTS 9024.10.00.00 for metal hardness testing appliances. Used for large forgings and castings in heavy industry.
Vickers Microhardness Tester
Precision instrument using a diamond pyramid indenter for micro-scale hardness testing on metal thin sections and coatings, with automated optical measurement. Classified in HTS 9024.10.00.00 as a metal mechanical property testing appliance. Ideal for electronics and heat-treated steel analysis.
Charpy Impact Testing Machine
Pendulum-based apparatus that strikes notched metal specimens to measure impact energy absorption, indicating toughness and brittleness. Under HTS 9024.10.00.00 for testing elasticity and other mechanical properties of metals. Critical for pipeline and structural steel certification.
Digital Fatigue Testing Machine
Servo-hydraulic system cyclically loading metal samples to evaluate fatigue life under repeated stress, with digital controls and data logging. HTS 9024.10.00.00 classification for metal strength and elasticity testing. Used in automotive crankshaft and aircraft component development.
Portable Metal Hardness Tester
Handheld rebound hammer device that measures metal hardness via impact velocity ratio, rebounding off surface. Fits HTS 9024.10.00.00 as portable appliance for metal mechanical property testing. Field use for in-service inspections of machinery.
Metallographic Grinding Machine
Precision polishing and grinding appliance for preparing metal samples for microscopic hardness and microstructure testing. Classified under HTS 9024.10.00.00 as accessory appliance integral to metal mechanical property evaluation. Used in failure analysis labs.
Bend Testing Machine for Metals
Guided apparatus applying controlled bending force to metal bars or sheets to assess ductility and formability. HTS 9024.10.00.00 for testing compressibility and elasticity of metals. Standard for rebar and tube quality control.
Shear Strength Testing Fixture
Specialized accessory holding metal coupons under lateral force to measure shear strength properties. Under HTS 9024.10.00.00 as part for metal testing machines per chapter note 2. Used with universal test frames.