Medical Laboratory Testing: Flexural Properties
Flexural Properties testing measures how plastics and composites behave under bending loads. The test supports a specimen on two points and applies force at the center or two points until failure or a specified deflection, determining flexural strength and modulus. For medical manufacturers, flexural properties are essential for rigid housings, instrument handles, connectors, and structural components to ensure they can withstand bending stresses without breaking or deforming during use.
Many medical devices experience bending forces during handling, insertion, or normal operation. A material with poor flexural properties can crack or permanently deform, compromising safety and function. Applus+ Reliable Analysis already maintains accredited flexural testing capabilities using universal testing machines, integrated with our polymer characterization, HDT, and thermal analysis programs.
These evaluations support material qualification and design validation for rigid medical components. Manufacturers use flexural data to select appropriate materials, optimize designs, and document mechanical performance for regulatory submissions. Applus+ Reliable Analysis delivers accurate, reproducible results using equipment already operating daily under our ISO/IEC 17025 accreditation.
Common Flexural Properties Medical Testing Standards
ASTM D790 Flexural Properties of Unreinforced and Reinforced Plastics
ASTM D790 determines the flexural properties of plastics by supporting a specimen on two points and applying a load at the midpoint (three-point bending) or at two points (four-point bending) until failure or a specified strain. The test reports flexural strength, modulus, and strain at break. It is widely used for medical plastics in housings, instrument handles, connectors, and rigid components to ensure they can withstand bending loads without failure.
ISO 178 Plastics Determination of Flexural Properties
ISO 178 specifies the determination of flexural properties of plastics using three-point bending. The standard defines specimen dimensions, support span, test speed, and calculation of flexural strength and modulus. It is essential for medical polymers and rigid components to verify bending performance, particularly for products intended for European MDR compliance.
ASTM D6272 Flexural Properties of Unreinforced and Reinforced Plastics
ASTM D6272 uses four-point bending to determine flexural properties, reducing shear effects compared to three-point bending. The standard measures flexural strength and modulus under more uniform bending conditions. It is particularly valuable for larger medical components and beams where accurate flexural data without shear influence is needed for design validation.
ASTM D790 / ISO 178 Sterilization Compatibility
The combined application of ASTM D790 and ISO 178 after conditioning or sterilization evaluates how flexural properties change after exposure to heat, moisture, or aging. The standards help predict long-term bending performance of medical plastics. This is critical for components that undergo repeated sterilization or environmental exposure to ensure they retain sufficient stiffness and strength.
Your Partner for Expert Medical Flexural Materials Testing
Applus+ Reliable Analysis stands ready to support your medical rigid material flexural properties testing needs. Our ISO/IEC 17025 accredited laboratory already maintains the necessary flexural fixtures and tensile machines, allowing us to efficiently add these medical standards with only minor validation and training.
Whether you are qualifying new device housings, validating instrument handles, or ensuring performance of structural components, our team provides accurate and reliable data backed by decades of materials testing expertise. We invite you to Contact us to discuss how our expanded medical testing capabilities can support your next project or regulatory submission.
Additional Applus+ Reliable Analysis’ Commercial Medical Testing Capabilities
Whether it be material EMC, environmental, fabrication, or durability testing, Applus+ Reliable Analysis has a full lab of test equipment, which permits us to provide short lead times on scheduling. Our team strives to give our customers more time and energy on product development rather than testing.
Below is a list of common medical testing types that Reliable Analysis offers. Don’t see what you are looking for? Contact us, and we will determine the best course of action.
