EN10204 certification levels determine material traceability and testing rigor, with Type 3.1 offering independent verification essential for UAE oil & gas projects while Type 2.2 suffices for general fabrication. Nifty Alloys provides both through their Quality Standards – ISO 9001 & Material Certification system, ensuring compliance across customer specifications.
Type 2.2: Manufacturer's Test Declaration
EN10204 2.2 certificates declare compliance with order specifications plus basic test results from the manufacturer's routine production testing. Chemical analysis, cast number, and dimensions appear alongside generic mechanical properties (tensile, yield, elongation) from heat-specific but non-witnessed tests. No independent verification occurs—ideal for stockist sales of S355 structural steel or 304 pipe where end-user performs acceptance testing.
Type 3.1: Independent Factory Inspection
Type 3.1 elevates assurance through specific inspection by the manufacturer's authorized independent representative (separate from production). Actual test results from the supplied heat/cast get witnessed per material standard requirements (EN10025, ASTM A370), including full tensile properties, Charpy impact at specified temperature, and grain size where applicable. Critical for pressure vessels, lifting equipment, and ADIPS-approved fabrication.
Key Differences Matrix
- Inspection Authority: 2.2 = Production Dept, 3.1 = Independent Factory Inspector
- Test Specificity: 2.2 = Routine/non-specific, 3.1 = Standard-specific/witnessed
- Mechanical Data: 2.2 = Typical values, 3.1 = Actual heat results
- UAE Project Use: 2.2 = General fabrication, 3.1 = Pressure/safety critical
Procurement Impact in UAE
Oil & gas fabricators specify 3.1 minimum for 4140/4340 bars (EN10204 3.1B equivalent) while construction uses 2.2 for Mild Steel plates. Nifty Alloys' ISO9001:2015 certification guarantees proper document issuance—specify certificate type on purchase orders to avoid costly rejections during third-party verification.