Quality Is Built Into Every Bar
Round bars in nickel alloys, titanium and duplex stainless steels are used in components where failure is not an option: valve stems in sour gas service, shafts in seawater pumps, fasteners in gas turbines. Nexforge Alloys therefore treats testing and documentation as part of the product, not an afterthought. Every heat is traceable from the raw material certificate to the marking on the finished bar.
Raw Material Control
- Billets and ingots are purchased only from approved mills with EN 10204 3.1 certificates.
- Incoming chemistry is verified by spectro analysis before the material is released for rolling or forging.
- Each heat is allotted an internal lot number that stays with the bars through every process step.
Process Control
- Heating, rolling, forging and heat treatment parameters are recorded for each lot.
- Solution annealing, ageing and quenching are carried out in calibrated furnaces with charted temperature records.
- Peeling, grinding and straightening are checked for dimension, straightness and surface finish before inspection.
Testing & Inspection
- Chemical analysis: Optical emission spectrometry on every heat; interstitial (O, N, H) analysis for titanium.
- Mechanical testing: Tensile, yield, elongation, reduction of area, hardness and impact testing at room and sub-zero temperature.
- Corrosion testing: ASTM A262, ASTM G28 and ASTM G48 intergranular and pitting tests; ASTM A923 for duplex grades.
- Non-destructive testing: Ultrasonic testing to ASTM A388 / AMS 2154, dye penetrant and PMI on request.
- Dimensional: Diameter, ovality, straightness and length checked bar-wise against the ordered tolerance.
Certification & Documentation
- EN 10204 3.1 mill test certificate with every supply, showing heat number, chemistry, mechanical results and heat treatment.
- EN 10204 3.2 certification with third-party inspection agencies arranged on request.
- NACE MR0175 / ISO 15156 and NORSOK M-650 compliance statements for applicable grades.
- Bars are hard stamped or paint marked with grade, size and heat number, and colour coded grade-wise for stock identification.
Packing & Delivery
- Bars are bundled, end-capped and wrapped; export orders are packed in sea-worthy wooden cases or steel-strapped bundles.
- Each bundle carries a tag with grade, size, heat number and quantity matching the packing list and certificate.
