ASTM D3574 Sponge Foam Indentation Hardness Force Deflection Tester

This precision testing machine measures the concave hardness of porous elastic materials according to ASTM D3574 standards. It accurately determines the indentation hardness of polyurethane sponge foam, seating foam components (backrest, cushion foam), and similar materials.

Meets ASTM D3574 specifications

• Automatic clearing system upon test initiation
• Automatic return to initial position after sample break
• Automatic gear shifting for optimal measurement accuracy
• Adjustable test speeds for different sample types
• Force value calibration and verification system
• Multiple control methods: test force, speed, displacement, and strain
• Multi-purpose capability with various sensor configurations
• Curve analysis with point-by-point force and deformation data
• Real-time dynamic display of test data and curves
• Comprehensive test results and data analysis
• Program control with mechanical safety limits
• Automatic overload protection system

The test places the sample between upper and lower platens. The upper platen compresses the sample at a predetermined speed to the specified concavity according to ASTM D3574 methods (A, B, or C). The load element feeds pressure data to the controller for processing and display, accurately measuring indentation hardness of sponge, foam, and similar materials.