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NICKEL-CHROMIUM-MOLYBDENUM ALLOY

Inconel 625

Inconel 625 is a nickel-chromium-molybdenum alloy strengthened primarily by solid-solution effects from molybdenum and niobium. It combines high strength with excellent resistance to pitting, crevice corrosion and many aggressive environments.

SAE specificationAMS 5599Material identificationN06625
MATERIAL OVERVIEW

Inconel 625 Grade Information

Inconel 625 is a nickel-chromium-molybdenum alloy strengthened primarily by solid-solution effects from molybdenum and niobium. It combines high strength with excellent resistance to pitting, crevice corrosion and many aggressive environments.

Flat-product specification associated with Alloy 625. Annealed and solution-treated supply conditions must be distinguished.

Material specificationAMS 5599
Material identificationN06625
Product / supply conditionAnnealed; distinguish from solution-treated AMS 5869.
CHEMICAL COMPOSITION

Inconel 625 Chemical Composition

Manufacturer alloy composition limits, mass %; selected elements only. These are not the complete acceptance limits of the standard on this page.

Manufacturer grade reference composition — selected entries
Element / descriptionMass % / reference value
Ni58.0 min
Cr20.0–23.0
Mo8.0–10.0
Nb + Ta3.15–4.15
C0.10 max
MECHANICAL PROPERTIES

Inconel 625 Mechanical Properties

Published reference values for the stated form and condition. Typical values are not specification acceptance limits.

Manufacturer reference properties — stated product and test condition
Product form / conditionTensile (MPa)0.2% proof / yield (MPa)Elongation (%)Data basis
Annealed sheet / strip; room temperature827–1034414–62130–55Manufacturer nominal ranges, not AMS acceptance values.
Solution-treated plate (manufacturer groups rod, bar and plate); room temperature724–896290–41440–65Manufacturer nominal ranges; applies to stated condition only.

Manufacturer reference data is shown for comparison. Use the selected AMS 5599 edition and certified material test results for acceptance. Confirm specimen direction, gauge length, thickness and heat treatment.

SPECIFICATION REFERENCE

AMS 5599 Grade Reference

N06625

Material specificationAMS 5599
Source editionAMS5599J (2022 publisher revision)
Product / supply conditionAnnealed; distinguish from solution-treated AMS 5869.
Comparison tablesView the AMS 5599 comparison tables
Material overviewView Inconel 625 in Materials
Publisher referenceAMS 5599 publisher reference
Source referenceSpecial Metals — INCONEL alloy 625 technical bulletin, Tables 1 and 5; product specifications
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