MTC (Material Test Certificate)
A document (mill certificate) confirming the chemical composition and mechanical properties of the material used in a valve component, traceable to the heat number. Required for all pressure-retaining valve components. EN 10204 Type 3.1 (manufacturer-certified) and 3.2 (third-party witnessed) are the standard MTC types.
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Frequently Asked Questions
What is MTC (Material Test Certificate)?
A document (mill certificate) confirming the chemical composition and mechanical properties of the material used in a valve component, traceable to the heat number. Required for all pressure-retaining valve components. EN 10204 Type 3.1 (manufacturer-certified) and 3.2 (third-party witnessed) are the standard MTC types.
What are the acceptance criteria for MTC (Material Test Certificate)?
Acceptance criteria depend on the applicable standard. API 598 and ISO 5208 define leakage rate classes from zero (Rate A) to defined allowable drops (Rate D/F) based on valve size and test type. For dimensional and visual inspections, ASME B16.34 and the applicable valve standard define tolerances. Vajra Industrial Solutions provides full inspection documentation including shell test, seat leakage test, and dimensional check records.
What documents does Vajra provide for valve quality?
Vajra Industrial Solutions supplies valves with: (1) Material Test Certificates (MTC) per EN 10204 Type 3.1 for all pressure-retaining components, (2) Hydrostatic test reports to API 598 or ISO 5208, (3) Dimensional inspection certificates, (4) PMI (positive material identification) reports for alloy valves, and (5) Third-party inspection (TPI) by SGS, Bureau Veritas, Intertek, or TPIA as required. Contact sales@vajravyuh.com for a sample documentation package.
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Our valve engineers can help specify the right valve for your application. Full project documentation available: MTCs, test reports, dimensional inspection, and third-party inspection coordination.