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Nuclear Grade Nickel Alloy

Inconel 690 steam generator tubing, Inconel 718 reactor internals, Hastelloy C276 radwaste systems. ASME Section III N-Stamp certified materials. Full traceability from melt to delivery.

Request Nuclear Spec

Nuclear Plant Applications

Steam Generator (PWR)

  • Inconel 690 TT tubing (600C+)
  • Inconel 600 tube supports
  • Alloy 625 divider plates
  • Tube-to-tubesheet welding consumables
  • OD: 19.05mm, WT: 1.09mm standard

Reactor Internals

  • Inconel 718 core support
  • Alloy X750 springs & pins
  • 304NG baffle plates
  • Stellite hard-facing
  • Radiation-resistant grades

Primary Piping

  • 316NG stainless steel
  • Inconel 600 safe ends
  • Alloy 625 overlay welding
  • Forged elbows & tees
  • ASME III Class 1

Radwaste Treatment

  • C276 evaporators
  • Alloy 22 waste containers
  • Titanium Grade 2 piping
  • Zirconium reaction vessels
  • Long-term corrosion resistance

Nuclear Grade Materials

Inconel 690 (N06690)

Premium steam generator tubing. Superior PWSCC resistance vs Alloy 600. TT treatment for optimal properties.

Cr Content28-31%
TT Temp715C x 15hr
ASTMB163, B166
ApplicationSG tubing

Inconel 718 (N07718)

High strength internals material. Precipitation hardenable. Radiation resistant.

Tensile1375 MPa
Yield1100 MPa
AMS5662, 5663
ApplicationCore support

Alloy X750 (N07750)

Springs and fasteners for internals. Precipitation hardenable. Excellent fatigue resistance.

Heat Treatment885C x 24hr
ASTMB637
ApplicationSprings, pins
FeatureLow creep

Alloy 22 (N06022)

Waste container material. Exceptional long-term corrosion resistance. 10,000 year design life.

Cr + Mo + W40% min
PREN > 70
ApplicationYucca Mtn type
Thickness25mm plate

304NG Stainless

Nuclear grade 304. Low carbon, controlled nitrogen. Radiation resistant.

C max0.03%
N range0.06-0.10%
Ferrite < 5%
ApplicationInternals

Zirconium Grade 702

Chemical plant in nuclear fuel reprocessing. Outstanding acid resistance.

Zr + Hf > 99.5%
ASTMB550, B653
ApplicationDissolvers
FeatureLow neutron

Quality Assurance

ASME III

Section III N-Stamp qualification

NQA-1

Nuclear quality assurance program

10 CFR 21

Reporting of defects & noncompliance

10 CFR 50 App B

QA criteria for nuclear power plants

Contact for Nuclear Projects

Email: linyuquan@findsteel.cn

Requirements: Full material traceability, mill test reports, nuclear certifications

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