Inconel 939 Ingots, Inconel 939 Extra Low Zr Bars, Inconel 939 Aerospace Scrap

Product Description

Chemical Composition (%)

• Nickel: Balance (approx. 47.0 - 50.0)

• Chromium: 22.0 - 23.0

• Cobalt: 18.5 - 19.5

• Titanium: 3.6 - 4.0

• Aluminum: 1.8 - 2.1

• Tungsten: 1.8 - 2.2

• Niobium: 0.9 - 1.1

• Tantalum: 1.3 - 1.6

• Carbon: 0.13 - 0.17

• Zirconium (Standard Inconel 939): 0.05 - 0.12 max

• Zirconium (Extra Low Zr Modification): 0.02 max / Trace (optimized for enhanced weldability and hot ductility)

• Boron: 0.005 - 0.015

• Iron: 1.0 max

• Manganese: 0.20 max

• Silicon: 0.20 max

• Sulfur: 0.015 max

Material Standards & Designations

• UNS Number: UNS N09939 / UNS N09319

• Werkstoff Number: 2.4683

• Alloy Grade: Inconel 939 / IN-939 / NIMONIC Alloy 939

• Specifications: AMS 5393, ASTM B637 (Equivalents)

Physical & Mechanical Properties

• Density: 8.15 - 8.20 g/cm³

• Melting Range: 1310 - 1370 °C

• Tensile Strength: 130 - 150 ksi (900 - 1050 MPa)

• Hardness: 34 - 42 HRC (fully aged condition)

• Magnetic Behavior: Non-magnetic

Available Scrap & Product Forms

• Vacuum melt refined ingots and master alloy remelt stock

• Forged round bars, wrought bar ends, and extra-low Zr billet cutoffs

• Investment casting scrap, including gas turbine nozzle guide vanes and blade scrap

• Aerospace structural scrap, combustion chamber components, and ring punchings

• Clean solid offcuts, plate crops, and vacuum-grade solids

Recycling Guidelines

• Strict segregation between Standard Inconel 939 and Extra Low Zr material to preserve low-zirconium chemistry for weldable aerospace melt lots.

• Requires processing via Vacuum Induction Melting (VIM) due to reactive Cobalt, Titanium, and Aluminum levels.

• Cleanliness verified free from ceramic shell fragments, iron inclusion, cutting fluids, and oil residue.

• Mandatory XRF / Optical Emission Spectroscopy (OES) chemical analysis before induction furnace blending.