Inconel 625 Sheet Plate | AMS 5599 | UNS N06625

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PM Industries manufactures, supplies, and stocks AMS 5599 Inconel 625 Sheet Plate (UNS N06625) in a range of thicknesses and sizes. AMS 5599 is the aerospace material specification covering Inconel 625 in sheet and strip form, defining chemistry, mechanical properties, heat treatment condition, and surface quality for aerospace production. Inconel 625 is a nickel-chromium-molybdenum alloy with a niobium addition, solid-solution strengthened without requiring heat treatment to develop its mechanical properties. That simplicity in achieving high strength from the annealed condition is what makes 625 so practical in sheet and plate fabrication: the material that comes off the mill with full certification is the material that goes into service after welding, without any additional heat treatment to restore corrosion resistance or mechanical properties in the weld zone.

In sheet and plate form, Inconel 625 is fabricated into chemical vessel liners, marine structural sheet metal, exhaust system components, weld overlay cladding backing strip, bellows, expansion joints, and aerospace hot-section sheet metal. The alloy's good formability in the annealed condition combined with its excellent as-welded corrosion resistance makes it particularly practical for complex fabricated structures that would be impractical to heat treat after welding.

As-welded corrosion resistance without post-weld heat treatment is the practical fabrication advantage that most consistently drives Inconel 625 specification in chemical process and marine sheet metal applications. Most stainless steels sensitize in the heat-affected zone during welding unless they have stabilizing additions or very low carbon. Even many nickel alloys show some degradation in weld zone corrosion resistance. Inconel 625's niobium stabilization and low carbon content together prevent carbide precipitation during welding, maintaining corrosion resistance through the heat-affected zone in the as-welded condition. For large fabricated structures where post-weld solution annealing would be impractical, that behavior is essential.

Weld overlay cladding applications use Inconel 625 strip and sheet as the starting material for overlay deposits applied to carbon steel pressure vessels, pipe, and fittings. The overlay provides 625's corrosion resistance at the wetted surface while carbon steel provides the structural section. Sheet and strip form feeds the overlay welding process, making AMS 5599-certified 625 strip relevant to that cladding supply chain.

Bellows and expansion joint fabrications take advantage of 625's excellent fatigue resistance combined with its corrosion resistance. Formed bellows in chemical plant piping and offshore systems experience cyclic mechanical stress with each pressure and thermal cycle while exposed to corrosive process media. The combination of fatigue endurance and chloride corrosion resistance makes 625 the standard specification for those applications.

Sheet and plate are available in the solution-annealed condition with full material certification to AMS 5599 and applicable specifications including ASTM B443. Contact PM Industries for thickness, width, length, quantity, and pricing.

Specification Buy Inconel 625 Sheet & Plate | AMS 5599 | UNS N06625

Specifications	ASME SA 240/ASTM A 240
Standard Sizes	1000 x 2000 mm, 1220 x 2440 mm, 1500 x 3000 mm, 2000 x 2000 mm, 2000 x 4000 mm
Width	10-2500mm
Length	2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Surface	2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hairline, sand, blast, Brush, etching, etc
Thickness	0.1mm to 100 mm Thk
Hardness	Quarter Hard, Half Hard,Spring Hard, Soft, Hard
Stock available in form of	Shim Sheet, Rolls, Strip, Flats, Clad Plate, Plain Sheet, Plate, Sheet, Coils, Foils, Rolling Sheet, Rolling Plate, Flat Shim, Flat Sheet, Blank (Circle), soft annealed, sheared, annealed, tread plate,descaled, Checker Plate
Profiling	Plasma Plate Cutting
Value added services	Plasma cutting, Waterjet cutting, Laser cutting, welding, edge preparation, etc.
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
	Raw Materials Certificate
	100% Radiography Test Report
	Third Party Inspection Report, etc

Available Types of Inconel 625 Sheet & Plate

Inconel 625 Sheets & Plates – Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
Inconel 625	2.4856	N06625	NCF 625	NA 21	ХН75МБТЮ	NC22DNB4M	NiCr22Mo9Nb

Inconel 625 Sheet & Plate – Chemical Composition

Grade	C	Mn	Si	S	Cu	Fe	Ni	Cr
Inconel 625	0.10 max	0.50 max	0.50 max	0.015 max	-	5.0 max	58.0 min	20 - 23

Inconel 625 Sheets & Plates – Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.4 g/cm3	1350 °C (2460 °F)	Psi – 1,35,000 , MPa – 930	Psi – 75,000 , MPa – 517	42.5 %