1. Metallographic Sample Preparation & Analysis
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Perform full-process metallographic sample preparation including cutting, mounting, grinding, polishing, and etching
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Conduct microstructural observation, grain size rating, phase content analysis, and defect identification (e.g., porosity, inclusions, cracks) using metallurgical microscopes
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Analyze weld penetration depth, heat-affected zone, and weld microstructure of welded joints
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Prepare and archive metallographic specimens; maintain metallographic sample library
2. Hardness Testing
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Operate and maintain Brinell, Rockwell, Vickers, and microhardness testers to perform hardness testing on metallic materials
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Select appropriate hardness testing methods and loads based on material type and specification requirements
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Perform gradient and cross-sectional hardness testing (e.g., on welded joints, heat-treated parts)
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Record and analyze hardness data to determine material heat treatment status and process conformance
3. Material Mechanical Testing
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Operate universal testing machines to perform tensile testing, obtaining ultimate tensile strength, yield strength, and elongation values
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Perform other mechanical property tests in accordance with ASTM standards
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Organize, analyze, and report test data
4. Laboratory Equipment Maintenance & Quality Management
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Perform daily calibration, maintenance, and upkeep of testing equipment
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Maintain laboratory consumables inventory, including hardness test blocks, chemicals, polishing consumables, etc.
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Comply with laboratory safety procedures and 5S management requirements
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Participate in internal laboratory audits and proficiency testing
5. Cross-Functional Collaboration
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Collaborate with production, process, quality, and engineering teams to support process validation and problem-solving
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Participate in failure analysis projects, providing metallographic and hardness testing support
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Support material property validation required for PPAP submissions for new projects
To qualify for this role, you must meet the following:
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Associate degree or equivalent; Bachelor's degree in Materials Science, Metallurgical Engineering, Mechanical Engineering, or related field preferred
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2+ years of experience in automotive manufacturing or materials laboratory
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Proficient in the metallographic sample preparation process (cutting, mounting, grinding, polishing, etching); proficient in operating metallurgical microscopes
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Proficient in the operation and maintenance of Brinell, Rockwell, and Vickers hardness testers
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Basic knowledge of universal testing machines, tensile testing, and other mechanical property test methods
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Familiar with ASTM material testing standards (e.g., E3, E8, E10, E18, E92, E112, etc.)
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Proficient in Microsoft Excel, Word, and PowerPoint for data analysis and report generation
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Detail-oriented with good documentation and communication skills
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Ability to work rotating shifts and overtime; familiar with laboratory safety procedures
Key to being successful in this role:
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Experience in aluminum alloy material or weld metallography analysis
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Familiarity with SEM/EDS (Scanning Electron Microscopy/Energy Dispersive Spectroscopy) operation
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Experience in automotive parts industry (especially battery boxes, aluminum extrusions)
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Knowledge of ISO/IEC 17025 laboratory management systems
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Relevant NDT (Non-Destructive Testing) certifications
