Safety & Compliance Notice

Engineering Disclaimer

Mandatory Verification Scope • Mat Grades (matgrades.com)

1. Engineering Reference Purpose

Mat Grades provides engineering reference information compiled from recognized technical literature and published standards. Values displayed across our catalog, comparison tools, and data exports are intended exclusively for preliminary design screening, candidate alloy comparison, and engineering education.

2. Factors Causing Property Variations

Published mechanical properties, physical values, and electrical conductivity figures are subject to significant real-world variability. Material properties may vary substantially based on:

Metallurgical condition and temper (e.g. annealed, cold-worked, precipitation hardened, quenched & tempered)
Heat treatment parameters, soak duration, and cooling medium
Product form (sheet, plate, bar, rod, wire, tubing, forgings, or castings)
Section size, ruling thickness, and geometry-dependent cooling rates
Test temperature, strain rate, and measurement orientation (longitudinal vs transverse)
Standard specification revision dates and international harmonizations
Individual manufacturer mill melting practices, trace impurities, and grain boundary controls

3. Mandatory Verification Requirement

Users must independently verify all safety-critical, structural, aerospace, medical, procurement, and production design decisions against authoritative standards documents, certified supplier documentation, and applicable engineering regulatory codes.

4. Explicit Scope Limitations

Mat Grades must not represent itself as, and explicitly disclaims being:

Not a Standards Body

Mat Grades does not draft, issue, or officially certify standard specifications. We reference specifications published by ASTM, SAE, CEN/DIN, ISO, and CDA.

Not a Certifying Authority

Mat Grades does not inspect, stamp, or certify material conformity for commercial compliance, structural aerospace airworthiness, or pressure vessel codes.

Not a Mill Certificate Provider

Mat Grades does not issue Certified Material Test Reports (CMTR) or Mill Inspection Certificates (EN 10204 3.1 / 3.2). Procurement lots must be verified against actual lot inspection certificates issued by the manufacturing mill.

Not a Professional Engineering Approval Service

The data provided on this site does not constitute formal engineering sign-off, professional engineering consultation, or stamping of design calculations.

5. Inquiries & Corrections

If you identify a property discrepancy or an updated standard specification revision that should be evaluated, refer to our contact page for dataset feedback guidance.