NABL Accredited · CC-2480 · Est. 2004 · Gujarat's Trusted Calibration Lab
NABL-accredited calibration for manual, digital, and portable Brinell hardness testers. ISO 6506 / ASTM E10 traceable. Accepted by ISO 9001, IATF 16949 and foundry audit bodies.
±3 HBW
Accuracy
HBW 8–650
Range
ISO 6506
Standard
ISO 6506
Brinell Hardness Standard
NABL Accredited
CC-2480
— WHAT IS BRINELL HARDNESS TESTER CALIBRATION —
Think of a quality lab that relies on a brinell hardness tester for daily measurements. If it has drifted even slightly from its true value, every reading becomes unreliable — leading to defective products, failed audits, or safety risks. Regular calibration is the only way to confirm your instrument is telling the truth.
Brinell Hardness Tester calibration means comparing its readings against a NABL-traceable certified reference standard at multiple test points, recording the deviations, adjusting where possible, and issuing an NABL certificate — accepted by ISO 9001, IATF 16949, and all quality auditors.
Compare readings against a NABL-traceable reference standard across the full measurement range.
Adjust or document deviations so your instrument reads within accepted tolerance.
Issue a NABL-accredited certificate (CC-2480) with full traceability documentation.
— INSTRUMENTS COVERED —
All loads · All makes (Wilson, Mitutoyo, Zwick, Innovatest) · ISO 6506 · NABL accredited
Manual Brinell hardness testers for heavy industrial components and castings.
Digital Brinell hardness testers with optical measurement and auto-calculation.
Portable Brinell hardness testers for in-situ testing of large components.
Certified Brinell reference blocks for tester calibration and verification.
— OUR PROCESS —
Tester received, tagged. Ball indenter, anvil, load mechanism, and optical reading system inspected for wear.
NPL-traceable Brinell reference blocks used to measure as-found deviation at two hardness levels.
Applied loads (187.5, 750, 3000 kgf etc.) measured with certified load cell. Deviations corrected per ISO 6506-2.
Measurement microscope or digital reader calibrated using certified stage micrometer to verify indentation diameter accuracy.
Post-adjustment readings on reference blocks at two hardness levels. Repeatability calculated from 3 consecutive indentations.
NABL CC-2480 certificate issued with as-found/as-left data, expanded uncertainty (k=2), ISO 6506 traceability.
— STANDARDS & COMPLIANCE —
ISO 6506-1
Brinell Hardness Test Method
ISO 6506-2
Verification of Testing Machines
ASTM E10
Brinell Hardness of Metallic Materials
ISO/IEC 17025
NABL Accreditation Standard
Prism holds NABL CC-2480 under ISO/IEC 17025:2017. Brinell hardness certificates accepted by ISO 9001, IATF 16949, and all foundry/casting quality audit bodies.
— NON-NABL CALIBRATION —
For routine plant maintenance or workshops not requiring NABL certification — same engineers, same reference blocks, lower cost.
All calibrations use NPL-traceable Brinell reference blocks — only the certificate type differs.
Non-NABL Brinell jobs completed faster — ideal for large batch foundry maintenance.
Lower cost than NABL — suited for workshop testers and non-critical material verification.
Portable verification tools to your foundry across Gujarat — same specialist team.
— AREAS WE SERVICE —
Engineers visit your foundry or casting facility. Onsite Brinell tester calibration with minimal downtime.
Why Choose Prism
Since 2004, every NABL hardness certificate issued by Prism has been accepted by ISO 9001, IATF 16949, and foundry audit bodies — no rejections.
— FAQ —
Get In Touch
Tell us the tester make/model, load, quantity, and any urgency. We respond within 2 business hours.
— FROM OUR BLOG —
Surface roughness (Ra, Rz) is a critical quality parameter in precision machining, sealing surfaces, and coating adhesion. NABL-certified roughness tester calibration ensures accurate surface texture measurements.
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Hardness testing is fundamental to material qualification in automotive, tooling, and steel industries. NABL-certified hardness tester calibration ensures traceable, accurate hardness values.
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Gujarat's steel and fabrication sector — from mini steel mills to pressure vessel manufacturers — requires NABL-certified calibration for BIS material testing, ISO 9001, and structural safety compliance.
Read MoreNABL Accreditation Disclaimer
Calibration services are provided under NABL Certificate CC-2480 in strict accordance with our officially approved scope of accreditation (ISO/IEC 17025:2017). Parameters or onsite conditions falling outside our active NABL scope are processed with standard metrological traceability to NPL/BIPM national standards.