Oerlikon Metco AMDRY 718B (5-lb)

Amdry™ 718B Superalloy Braze Filler Metal

Overview

Amdry™ 718B is a gas-atomized, spheroidal nickel-based braze filler metal developed for joining and repair of nickel superalloy components used in aerospace and high-temperature industrial applications. Containing boron as a melting-point suppressant and a high chromium content for enhanced corrosion and oxidation resistance, Amdry™ 718B closely matches the chemistry of Inconel® 718, making it ideal for OEM manufacturing, crack repair, restoration, and rebuild of turbine engine components. It produces high-strength, corrosion-resistant brazed joints and is frequently blended with compatible superalloy powders for dimensional restoration.

Key Technical Specs

• Product Type: Nickel-based superalloy braze filler metal
• Form: Gas-atomized spheroidal powder
• Chemical Formula: Ni 18.5Cr 18Fe 5(Nb+Ta) 3Mo 2.5B 1Ti 0.5Al 0.5C
• Manufacturing Process: Gas atomization
• Morphology: Spheroidal
• Melting Point (Liquidus): 1232°C (2250°F)
• Solidus Temperature: 1104°C (2020°F)
• Braze Temperature Range: 1232-1274°C (2250-2325°F)
• Recommended Joint Gap: 0.05-0.38 mm (0.002-0.015 in)
• Particle Size: -106 +45 ?m (-140 +325 mesh)
• Viscosity: Sluggish
• Joint Strength: Excellent
• Joint Ductility: Good
• Corrosion Resistance: Excellent
• Oxidation Resistance: Excellent

Approvals & Specifications

• GE B50TF203, Class A
• Tulsa Airfoil Repair MS1089

Typical Applications

• Brazing of IN718, IN738, IN625 and MA754 nickel superalloys
• Crack repair of worn or damaged aerospace components
• Repair and restoration of turbine engine hardware
• Joining of nickel-based superalloy assemblies
• Restoration of dimensional wear when blended with compatible superalloy powders
• Repair of cracks measuring 0.05-0.38 mm (0.002-0.015 in)
• Repair of wider gaps up to approximately 1.5 mm when mixed with superalloy filler powder

Key Features & Benefits

• Chemistry closely matches Inconel® 718 for compatible repairs
• High chromium content provides excellent corrosion and oxidation resistance
• Gas atomization delivers excellent chemical homogeneity and consistent processing
• Produces excellent joint strength for structural aerospace repairs
• Good ductility helps accommodate service stresses
• Suitable for OEM manufacturing and MRO repair applications
• Can be blended with superalloy powders for crack filling and restoration work
• Available in powder, paste, tape and preform formats

Application Guidelines

• Ensure substrates are clean, dry and free from oxides and organic contamination.
• Nickel flash titanium- or aluminium-rich substrates to improve braze flow where required.
• No flux is required.
• Recommended atmosphere is vacuum.
• Alternative atmosphere: Pure dry hydrogen with dew point ? -52°C (? -60°F).
• Maintain recommended braze temperatures between 1232°C and 1274°C.
• Use recommended joint gaps of 0.05-0.38 mm for optimum capillary flow.
• For rebrazing, subsequent cycles should remain below the original braze temperature where possible.

Compatibility & Limitations

• Designed primarily for nickel-based superalloys including Inconel® 718 family materials
• Suitable for aerospace repair and restoration processes
• Compatible with blending using suitable superalloy powders for rebuild applications
• Wide-gap capability is available when blended with matching superalloy filler powders
• Braze viscosity is relatively sluggish compared with lower melting braze alloys
• Rebrazing temperatures should be carefully evaluated as alloy chemistry changes after initial brazing

Packaging & Procurement

• Powder form
• 5 lb (approximately 2.25 kg) package
• Standard stock availability
• Global distribution
• Paste, tape and preforms available by special order

Why This Product is Chosen for AOG / MRO

• Restores expensive nickel superalloy components instead of replacing them
• Produces high-strength repairs compatible with Inconel® 718 components
• Excellent corrosion and oxidation resistance for demanding engine environments
• Suitable for precision crack repair of turbine engine hardware
• Widely used in aerospace component overhaul and restoration facilities

Practical Suggestions for Your Team (AOG Mindset)

• Ensure meticulous surface preparation to maximise braze quality.
• Maintain recommended joint clearances for optimum capillary action.
• Use vacuum brazing wherever possible for highest-quality joints.
• Evaluate rebraze temperatures carefully during multiple repair cycles.
• Store powder in sealed original containers in a dry environment to prevent contamination.
• Tumble powder containers before use to minimise segregation.

Manufacturer / Aviation Spec Codes

• Product Name: Amdry™ 718B
• Product Type: Nickel-based superalloy braze filler metal
• Manufacturing Process: Gas-atomized powder
• Primary Applications: Superalloy joining and crack repair
• Specifications: GE B50TF203 Class A, Tulsa Airfoil Repair MS1089