ASTM D638 is the standard the plastics world runs on — it’s how you prove the tensile strength, elongation, and modulus of a plastic or reinforced material. If a customer, designer, or auditor asks for tensile data on a polymer, they almost always mean D638. Searching for reliable astm d638 testing services in chennai? Kiyo R&D Lab tests your plastics to this exact standard and gives you clear, defensible numbers.
From rigid and flexible plastics to filled and fibre-reinforced grades, our expert team delivers accurate tensile results, supporting data, and clear, audit-ready reports you can rely on.
ASTM D638 is the standard test method for the tensile properties of plastics. A dumbbell-shaped specimen is pulled at a controlled speed until it breaks, while force and elongation are recorded. From that, the test reports tensile strength, elongation at break, and modulus of elasticity. When you order astm d638 testing services in chennai, these are the numbers you get — the ones designers and buyers use to compare and qualify plastics.
For manufacturers, it verifies incoming or outgoing material. For product designers, it supplies the data sheet values. For QC and failure work, it confirms whether a plastic meets its specified grade — all to a globally accepted method.
As a full-service provider of astm d638 testing services in chennai, we test rigid, flexible, filled, and reinforced plastics and report the full set of tensile properties the standard defines.
Peak stress the plastic withstands.
How far it stretches before failing.
Stiffness of the material.
Onset of permanent deformation.
Correct D638 dumbbell types.
Standard temperature & humidity.
| Type | Used For | Note |
|---|---|---|
| Type I | Rigid & semi-rigid plastics | Most common, ≥7 mm |
| Type II | Rigid plastics when Type I fails in grip | Narrower |
| Type III | Thick sheets (7–14 mm) | Larger specimen |
| Type IV | Flexible plastics, thin sheet | For comparing to rigid |
| Type V | Small specimens, limited material | Smallest |
Beyond D638, our astm d638 testing services in chennai cover the related tensile and plastic-testing methods your specification may call for, so everything is accepted by auditors, buyers, and regulators alike.
ASTM ISO
| Standard | What It Covers | Material |
|---|---|---|
| ASTM D638 | Tensile properties of plastics | Plastics |
| ISO 527 | Tensile properties of plastics (ISO) | Plastics |
| ASTM D412 | Tension testing of rubber & elastomers | Rubber |
| ASTM E8 | Tension testing of metals | Metals |
| ASTM D790 | Flexural properties of plastics | Plastics |
Need metals or rubber too? Our tensile testing service covers ASTM E8, D412, and ISO 527 alongside D638 — ask us to combine them.
Based in Chennai with branches in Chrompet and Oragadam, Kiyo R&D Lab makes professional D638 tensile testing easy to access for the Chennai–Oragadam industrial corridor, with convenient drop-off and courier-friendly collection.
Looking for astm d638 testing services in chennai? Our facilities are equipped for tensile testing of plastics across all D638 specimen types with clear, accurate reporting.
📞 Call 90420 86986 💬 Request a QuoteExplore all our capabilities at www.kiyorndlab.com.
When material quality, design data, and compliance are on the line, trust a lab that delivers clear answers. As a leading provider of astm d638 testing services in chennai, we combine correct specimen preparation, the exact standard method, and expert interpretation to give you tensile data you can stand behind.
From a single grade check to a full material qualification, the team at Kiyo R&D Lab is ready to help. Reach out today and turn your sample into a reliable, audit-ready report.
For quotation or visit