Microstructure Evaluation Services

Precision Metallography for Material Characterisation

Microstructure evaluation is one of the most important tools in modern metallurgical engineering, providing critical insights into the relationship between a material's processing history, microstructure, and performance. At Subodh Material Technologists, we perform comprehensive metallographic examinations to evaluate the internal structure of metals, weldments, coatings, and engineering components using advanced optical microscopy and internationally recognised evaluation procedures.

Our laboratory is equipped with Olympus and ZEISS metallurgical microscopes, enabling high-resolution bright field imaging, image capture, dimensional measurements, and detailed microstructural analysis. These advanced systems allow our metallurgists to accurately examine grain structures, phase constituents, inclusions, weld microstructures, heat treatment conditions, coating integrity, and manufacturing defects with exceptional clarity and repeatability.

Whether for quality assurance, product qualification, process validation, failure analysis, or research and development, our microstructure evaluation services provide reliable technical data that supports informed engineering decisions across diverse industries.

Advanced Metallography Capabilities

Our laboratory performs detailed evaluation of metallic materials including:

• Grain Size Measurement

• Microstructure Examination

• Weld Metallography

• Heat Treatment Verification

• Phase Identification

• Inclusion Rating

• Decarburisation Assessment

• Carburisation Evaluation

• Case Depth Measurement

• Surface & Subsurface Defect Analysis

• Banding Evaluation

• Ferrite Content Evaluation

• Graphite Classification in Cast Irons

• Coating Thickness & Quality Assessment

• Macro Examination

• Micro Examination

• Failure Analysis Support

• Manufacturing Defect Investigation

High-Resolution Optical Microscopy

Our laboratory utilises premium Olympus and ZEISS metallurgical microscope systems for precise imaging and documentation of metallic microstructures.

These systems provide:

• High-resolution optical imaging

• Bright field microscopy

• Digital image acquisition

• Accurate dimensional measurements

• Grain boundary analysis

• Phase distribution studies

• Weld microstructure evaluation

• Surface defect examination

• Image annotation and reporting

• Repeatable measurement accuracy

The combination of advanced optics and experienced metallurgists ensures highly reliable microstructural interpretation suitable for industrial quality control, certification, and research applications.

Standards-Based Metallographic Evaluation

Every examination is performed following internationally accepted engineering practices and recognised standards wherever applicable.

Our evaluations reference methodologies and acceptance criteria from internationally recognised standards including:

ASTM Standards

• ASTM E3 – Standard Guide for Preparation of Metallographic Specimens

• ASTM E407 – Microetching of Metals and Alloys

• ASTM E112 – Average Grain Size Determination

• ASTM E45 – Determining the Inclusion Content of Steel

• ASTM E562 – Volume Fraction by Systematic Manual Point Count

• ASTM A247 – Graphite Microstructure of Cast Iron

• ASTM E1268 – Degree of Banding

• ASTM E340 – Macroetching Metals and Alloys

• ASTM E381 – Macro Examination of Steel Bars, Billets and Forgings

• ASTM E384 – Microindentation Hardness Testing (where applicable)

ISO Standards

• ISO 643 – Determination of Apparent Grain Size

• ISO 4967 – Non-metallic Inclusion Content of Steel

• ISO 945-1 – Classification of Graphite in Cast Iron

Indian Standards (IS)

Where customer specifications require compliance with Indian Standards, examinations are carried out in accordance with applicable BIS/IS standards for metallography, steel products, castings, weldments, and engineering materials.

ASM Guidelines

Our metallurgists also utilise best practices and technical methodologies published in the ASM Handbook Series, particularly:

• ASM Handbook Volume 9 – Metallography and Microstructures

• ASM Handbook Volume 11 – Failure Analysis and Prevention

• ASM Handbook Volume 12 – Fractography

These references provide internationally recognised procedures for microstructural interpretation, defect identification, and failure investigations.

Applications

Our microstructure evaluation services support:

• Material Qualification

• Manufacturing Process Validation

• Heat Treatment Verification

• Welding Procedure Qualification

• Failure Investigation

• Root Cause Analysis

• Incoming Material Inspection

• Quality Assurance

• Product Development

• Research & Development

• Life Assessment Studies

Industries We Serve

Our metallography laboratory supports organisations across:

• Oil & Gas

• Aerospace

• Defence

• Nuclear

• Automotive

• Heavy Engineering

• Steel Manufacturing

• Foundries

• Railways

• Power Generation

• Chemical Processing

• Fabrication Industries

• Research Institutions

• Universities

Why Choose Subodh Material Technologists?

• Advanced Olympus & ZEISS Metallurgical Microscopes

• Experienced Metallurgists and Materials Engineers

• Standards-Based Evaluation (ASTM, ISO, ASM & IS)

• NABL-Aligned Quality Practices

• High-Resolution Digital Imaging

• Comprehensive Technical Reporting

• Fast Turnaround Time

• Reliable Interpretation for Critical Engineering Applications