At High Technology Nondestructive Testing Service Co., Ltd, we provide Hardness Testing (HT) as a vital component of material verification and quality control. By measuring a material’s resistance to localized plastic deformation, we help our clients determine tensile strength, assess the success of heat treatments, and ensure that components meet the specific mechanical requirements of their design codes.
Our Advanced Testing Methodologies
We utilize a range of precision instruments to provide accurate hardness data across various material types and geometries:
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Portable Leeb Rebound Testing: Ideal for large, heavy components or installed assets in the field. This method allows for rapid, non-destructive testing of large-scale structures like pressure vessels and storage tanks.
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Ultrasonic Contact Impedance (UCI): Perfect for testing thin-walled pipes, heat-affected zones (HAZ) of welds, and complex geometries where traditional rebound methods may be inaccurate.
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Stationary Rockwell, Brinell, and Vickers Testing: For high-precision laboratory analysis of coupons, small parts, and material samples requiring laboratory-grade validation.
Key Applications
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Weld Qualification: Verifying the hardness of the weld metal and the Heat Affected Zone (HAZ) to ensure they are not prone to brittle fracture or stress corrosion cracking.
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Heat Treatment Verification: Confirming that processes like PWHT (Post-Weld Heat Treatment) or quenching and tempering have achieved the desired metallurgical properties.
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Material Identification: Assisting in the verification of unknown alloys or ensuring that supplied materials meet the mill test report (MTR) specifications.
Technical Compliance & Expertise
Our testing protocols are designed to eliminate operator error and provide repeatable, high-integrity data.
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Standards: All tests are performed in accordance with ASTM A956, ASTM E10, ASTM E18, ASTM E110, and ISO 6506/6507/6508.
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Calibration: We use only calibrated equipment with traceable test blocks to ensure the highest level of accuracy.
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Reporting: We provide detailed hardness maps and statistical analysis, helping engineers make informed decisions about the “Fitness-for-Service” of their assets.
