Testing Technician

Responsibilities

Perform full-process metallographic sample preparation including cutting, mounting, grinding, polishing, and etching

Conduct microstructural observation, grain size rating, phase content analysis, and defect identification (e.g., porosity, inclusions, cracks) using metallurgical microscopes

Analyze weld penetration depth, heat‑affected zone, and weld microstructure of welded joints

Prepare and archive metallographic specimens; maintain metallographic sample library

Operate and maintain Brinell, Rockwell, Vickers, and microhardness testers to perform hardness testing on metallic materials

Select appropriate hardness testing methods and loads based on material type and specification requirements

Perform gradient and cross‑sectional hardness testing (e.g., on welded joints, heat‑treated parts)

Record and analyze hardness data to determine material heat‑treatment status and process conformance

Operate universal testing machines to perform tensile testing, obtaining ultimate tensile strength, yield strength, and elongation values

Perform other mechanical property tests in accordance with ASTM standards

Organize, analyze, and report test data

Perform daily calibration, maintenance, and upkeep of testing equipment

Maintain laboratory consumables inventory, including hardness test blocks, chemicals, polishing consumables, etc.

Comply with laboratory safety procedures and 5S management requirements

Participate in internal laboratory audits and proficiency testing

Collaborate with production, process, quality, and engineering teams to support process validation and problem‑solving

Participate in failure analysis projects, providing metallographic and hardness testing support

Support material property validation required for PPAP submissions for new projects

Qualifications

Associate degree or equivalent;
Bachelor’s degree in Materials Science, Metallurgical Engineering, Mechanical Engineering, or related field preferred

2+ years of experience in automotive manufacturing or materials laboratory

Proficient in the metallographic sample preparation process (cutting, mounting, grinding, polishing, etching); proficient in operating metallurgical microscopes

Proficient in the operation and maintenance of Brinell, Rockwell, and Vickers hardness testers

Basic knowledge of universal testing machines, tensile testing, and other mechanical property test methods

Familiar with ASTM material testing standards (e.g., E3, E8, E10, E18, E92, E112, etc.)

Proficient in Microsoft Excel, Word, and PowerPoint for data analysis and report generation

Detail‑oriented with good documentation and communication skills

Ability to work rotating shifts and overtime; familiar with laboratory safety procedures

Key to Being Successful

Experience in aluminum alloy material or weld metallography analysis

Familiarity with SEM/EDS (Scanning Electron Microscopy/Energy Dispersive Spectroscopy) operation

Experience in automotive parts industry (especially battery boxes, aluminum extrusions)

Knowledge of ISO/IEC 17025 laboratory management systems

Relevant NDT (Non-Destructive Testing) certifications

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