NABL Accredited · Metal Chemical Testing
Chemical Analysis — Epoxy Coated Reinforcement Steel Bar(IS 13620:1993 · IS 1786:2008)
Base-steel chemical composition testing of fusion-bonded epoxy coated reinforcement bars per IS 13620:1993 and IS 1786:2008 — confirming the coated bar's underlying steel meets its declared grade.
IS 13620
Standard (1993)
2–3 Days
Report TAT
NABL
Accredited
NABL Accredited Lab · ISO/IEC 17025:2017
Digital Reports via Autovity QLMS
Pan-India · 7 Lab Locations
Est. 2009 · 20,000+ Projects
Overview
What is Epoxy Coated Rebar Chemical Analysis?
Fusion-bonded epoxy coated reinforcement bars combine the base TMT bar (to IS 1786:2008) with a 0.1–0.3 mm electrostatically applied epoxy layer per IS 13620:1993, providing corrosion resistance in marine, coastal and chemically aggressive environments. The coating specification governs film thickness, adhesion and pinhole-defect limits, but the underlying steel must still independently meet its declared grade's chemical composition.
Global Lab verifies the base-steel chemistry beneath the coating using OES per IS 228 methods — a small coated area is carefully removed to expose bare steel for spark analysis without disturbing the surrounding coating integrity — reporting carbon, manganese, sulphur, phosphorus and carbon equivalent against IS 1786:2008 limits for the declared grade.
Reviewed by Mahemood Ahmad, Lab Manager — NABL Accredited Laboratory, Global Lab India
Precision OES Analysis
Optical Emission Spectroscopy gives multi-element results in a single spark burn.
Fast Turnaround
On-site sampling with digital reports dispatched within 24 hours.
NABL Certified
All test reports carry NABL accreditation seal valid for legal and contractual use.
Pan-India Coverage
Site engineers deployed across 7 lab locations and all major project sites.
Digital Reporting
Access reports anytime via Autovity QLMS client dashboard — zero paperwork.
Test in Action
Chemical Analysis — Epoxy Coated Reinforcement Steel Bar — Site Images
Coating Locally Removed to Expose Base Steel
OES Spark Analysis of Exposed Base Steel
Base-Steel Composition Checked Against IS 1786 Grade
Test Procedure
How the Chemical Analysis — Epoxy Coated Reinforcement Steel Bar is Conducted
- 1
Sample Selection
A representative coated bar section is sampled, with coating batch and thickness records reviewed alongside the declared base-steel grade. - 2
Localized Coating Removal
A small area of epoxy coating is carefully removed to expose bare base steel for spectral analysis, without disturbing the surrounding coating integrity. - 3
OES Spark Analysis
Optical Emission Spectroscopy determines carbon, manganese, sulphur, phosphorus and silicon on the exposed base steel, calibrated against certified reference material. - 4
Carbon Equivalent Calculation
Carbon equivalent is calculated and checked against the IS 1786:2008 limit for the declared grade. - 5
Reporting
Base-steel composition and CE are compiled into a NABL-accredited report confirming grade compliance, issued via Autovity QLMS.
Standards & Specifications
Applicable Test Standards
| Standard | Title | Scope | Type |
|---|---|---|---|
| IS 13620:1993 | Fusion Bonded Epoxy Coated Reinforcing Bars — Specification | Coating Thickness, Adhesion & Application | Indian Standard |
| IS 1786:2008 | High Strength Deformed Steel Bars — Specification | Base-Steel Chemical Composition | Indian Standard |
| IS 228 (Various Parts) | Methods for Chemical Analysis of Steels | Elemental Analysis Methods | Indian Standard |
Applications
Where is the Chemical Analysis — Epoxy Coated Reinforcement Steel Bar Used?
Marine and coastal RCC structure reinforcement QC
Bridge deck and parking structure corrosion-resistant rebar verification
Chemical plant and wastewater structure reinforcement QC
Manufacturer batch qualification for epoxy-coating applicators
Forensic investigation of premature corrosion failures
Third-party inspection for corrosion-resistant rebar supply contracts
Why Choose Global Lab
Our Advantages
Coating-Safe SamplingBase steel exposed without compromising the surrounding coating's corrosion protection.
NABL Accredited ReportsResults valid for marine/coastal structural QA and contractual compliance records.
Carbon Equivalent IncludedCE calculated for weldability assessment alongside composition.
Fast TurnaroundOES results available within 2–3 working days.
Pan-India CoverageEpoxy-coated rebar testing available across all 7 NABL-accredited lab locations.
Digital ReportingFull elemental breakdown delivered via the Autovity QLMS client dashboard.
Quick Answers
Frequently Asked Questions
What standard governs the Chemical Analysis — Epoxy Coated Reinforcement Steel Bar?
Chemical Analysis — Epoxy Coated Reinforcement Steel Bar is tested per IS 13620:1993, IS 1786:2008 and IS 228 (Various Parts).
How long does the Chemical Analysis — Epoxy Coated Reinforcement Steel Bar take?
Reports are typically issued within 2–3 Days of sample receipt at the lab, delivered digitally via the Autovity QLMS client dashboard.
Where is the Chemical Analysis — Epoxy Coated Reinforcement Steel Bar used?
It is commonly used for marine and coastal RCC structure reinforcement QC, and for bridge deck and parking structure corrosion-resistant rebar verification.