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Industry Focus
Automotive & Auto Components
Grade-correct materials. Qualified welds. Certified coatings.
How QML Serves This Industry
Automotive supply chains demand that every incoming material, fastener, and subassembly meets specification before it reaches the line. QML provides independent chemical, mechanical, and metallurgical testing to support incoming inspection, supplier qualification, failure investigation, and process certification for automotive OEMs and Tier-1/2 suppliers across Tamil Nadu.
Testing Scope for Automotive & Auto Components
Every testing requirement matched to what QML does and the applicable standard.
| Testing Requirement | What We Do | Standard |
|---|---|---|
| Incoming material grade verification | OES chemical analysis against IS 1570, IS 2062, AISI/SAE grades | IS 8811 / ASTM E415 |
| Tensile & yield strength of structural parts | UTM testing — UTS, YS, 0.2% proof, elongation, RA | IS 1608-1 / ASTM E8 |
| Surface hardness of heat-treated components | Rockwell HRC / HRB, Brinell HBW, Vickers HV, Micro-Vickers HV0.1–HV1 | IS 1586 / ASTM E18 / E10 / E92 |
| Case depth of carburised / nitrided gears & shafts | Effective case depth (ECD) and total case depth (TCD) by Vickers traverse | ASTM E384 / ISO 2639 |
| Coating corrosion resistance (plating, paint) | Salt spray exposure — neutral, acetic acid (AASS), copper-accelerated (CASS) | ASTM B117 / ISO 9227 |
| Inclusion cleanliness of forged / rolled stock | Inclusion rating — Type A/B/C/D, thin/heavy severity per worst field & average | ASTM E45 / ISO 4967 |
| Weld integrity of chassis & body sub-assemblies | Macro & micro weld examination, HAZ hardness traverse, penetration assessment | ISO 17639 / BS EN ISO 9015-1 |
| Microstructural verification of stampings & castings | Phase identification, grain size, decarburisation, prior austenite grain boundary | ASTM E112 / E1077 |
Materials Handled
Mild steel (IS 2062 E250–E410)
Low alloy steel (EN8, EN19, EN24, SCM415/420)
Spring steel (SUP 10, 65Mn)
Stainless steel (304, 316, 410)
Grey & SG cast iron
Aluminium alloys (6061, 7075)
Copper & brass components
Need testing for Automotive & Auto Components?
Submit your enquiry and our team will confirm scope, turnaround, and pricing — usually within the same working day.