AMS 2631 Ultrasonic Inspection — Fast, Reliable UT for Titanium Bars, Billets & Plate

AMS 2631 defines a proven ultrasonic testing (UT) procedure to find internal defects—cracks, voids, laminations, stringers, and non-metallic inclusions—in wrought titanium and titanium alloy products ≥ 0.25 in (6.4 mm) in thickness or diameter. If your program references ams 263 series methods for nondestructive testing, AMS 2631 is the go-to UT spec for incoming inspection and release-to-production of titanium mill products.

What AMS 2631 Covers

• Products & Sizes: Titanium bars, billets, and plate, ≥ 0.25 in (6.4 mm) cross-section

• Purpose: Detect and evaluate internal discontinuities before machining or field use

• Where Used: Aerospace, space, medical, marine, and industrial programs requiring the AMS 263 family for quality control

Key Requirements at a Glance

• Technique: Pulse-echo contact UT (straight-beam; angle-beam when required by drawing/PO)

• Equipment: Calibrated flaw detector, approved reference blocks, longitudinal probes, proper couplant, and scan-position control

• Calibration & Sensitivity: Grade-appropriate reference reflectors; DAC / TCG as required to ensure uniform sensitivity through full sound path

• Coverage: 100% scan of specified surfaces/volumes without skip areas or dead zones

• Evaluation: Indications sized by amplitude/length and compared to acceptance criteria; back-wall losses and double echoes must be investigated

• Records: Capture instrument settings, probe ID, calibration photos/plots, maps of indications, and pass/fail disposition per PO

Exact acceptance levels, reference reflectors, and reporting format follow the latest AMS 2631 revision and drawing/PO requirements.

Benefits of Specifying AMS 2631

• Higher reliability: Removes defective stock early—reducing downstream scrap

• Aerospace alignment: Matches customer expectations for titanium UT under AMS 263 rules

• Traceability: Standardized setups and reporting simplify FAI, audits, and RCCA

• Machining risk reduction: Avoid discovering flaws after costly hog-outs

Typical Discontinuities Found by UT

• Linear flaws → seams, laps, forging cracks

• Planar flaws → laminations or disbonded layers in wide plate or thick bar

• Volumetric flaws → porosity, inclusions, shrinkage

• Z-direction issues → back-wall signal loss indicating near-surface damage or lamination

Supplier Checklist for AMS 2631 Compliance

• Call-outs: “UT per AMS 2631” + class / acceptance level from drawing/PO

• Material detail: Alloy, heat/lot, form, size, removal plan for finished stock

• Scan plan: Coverage, index spacing, ends/edges, area maps

• Calibration: Reference block spec, DAC/TCG steps, near-surface resolution checks

• Reporting: Probe IDs, gain/range, gate settings, couplant, indication logs, disposition

AMS 2631 vs Other AMS 263 Documents

Best-Practice Tips to Pass on the First Try

• Keep it clean: Remove scale and heavy tool marks; ensure smooth coupling surfaces

• Mind near-surface dead zones: Proper frequency and wedges to inspect first few mm

• Validate linearity & gain: Confirm signal stability and eliminate gain jumps before scanning

• Document everything: Keep screenshots/plots and coordinate maps for fast customer approval

• Correlate with machining: Share UT maps with CAM to position critical features away from indications

Quality Full Work

Titanium Metals specializes in high-quality titanium materials and components for critical industries. Every product is manufactured with precision, tested for strength, corrosion resistance, and purity.

100% Work Satisfication

We deliver premium-grade titanium metals engineered for high performance and long-term reliability. Every product is manufactured with strict quality controls, precise dimensions, and flawless finishing to match international standards.