Alloy N06625 Tubing

1. Standard: ASTM B444, ASME SB444, ASTM B704, ASME SB704
2. Diameters: 6.0 - 630mm
3. Wall thickness: 0.3mm – 50 mm
4. Length: Single Random, Double Random & Cut Length

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Product Introduction

Inconel 625, with its unparalleled strength, exceptional corrosion resistance, and excellent oxidation resistance, has become an indispensable key material in the aerospace, marine engineering, chemical processing, and energy sectors. HT PIPE is a astm b444 uns n06625 pipe supplier with 15+ export experience. Contact us for more information and quotes for free!

Features of alloy n06625 pipe

High Mechanical Strength: It exhibits excellent tensile, creep, and rupture strength at both room and elevated temperatures (up to approximately 1000°C).

Corrosion Resistance: It is highly resistant to a wide range of harsh corrosive media, including seawater, brine, neutral salts, alkaline media, organic acids, and various inorganic acids.

Fatigue Resistance: It exhibits a long fatigue life under alternating stresses.

Machinability and Weldability: Although a superalloy presents some machining challenges, Inconel 625 exhibits superior forming and welding properties compared to other similar materials.

2.4856 Alloy 625 Tube Specifications

Specifications	ASTM B444, ASME SB444, ASTM B474, ASME SB474
Seamless Tubes Sizes	1 / 2" NB - 8" NB
Welded Tubes Sizes	6" NB - 24" NB
Outer Diameter	6.0-630mm
Schedule	SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
Thickness	0.3mm – 50 mm
Type	Seamless / ERW / Welded/ Fabricated
Form	Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes
Length	Single Random, Double Random & Cut Length
End	Plain End, Beveled End, Treaded

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inconel 625 pipe Morphology and Manufacturing

alloy 625 tube Melting

Vacuum Induction Melting (VIM) is used for the primary melt, allowing for precise control of the alloy composition and effective removal of gases and impurities. Electroslag remelting (ESR) or vacuum consumable remelting (VAR) is typically performed to further purify the metal, improve the solidification structure of the ingot, eliminate segregation, and produce an ingot with uniform composition and extremely high purity.

inconel m06625 pipe Forging and Rolling

The heated ingot is forged in a massive forging press to break up the coarse as-cast structure and compact internal defects. Subsequently, the ingot undergoes multiple rounds of hot rolling (performed above the recrystallization temperature) to gradually reduce it to the desired thickness. This process refines the grain size and significantly improves the material's mechanical properties and transverse toughness.

astm n06625 tube Heat Treatment

Inconel 625 plate is typically annealed (typically between 870°C and 1100°C, followed by rapid cooling). This process dissolves carbides and gamma-ray phase precipitated during processing, softening the alloy and achieving optimal corrosion resistance and a suitable workable hardness (e.g., the annealed state specified in ASTM B446).

inconel 625 welded tube Surface treatment and finishing

The surface of the plate can be treated in a variety of ways, such as sandblasting and pickling to remove oxide scale, or grinding and polishing to achieve specific surface finish requirements.

Application of alloy n06625 pipe

Oil and gas: submarine pipelines, downhole tools for acid gas wells.

Chemical equipment: sulfuric acid reactors, phosphoric acid evaporators, pickling equipment.

Nuclear industry: containers and pipelines for nuclear waste treatment systems.

Marine engineering: seawater desalination devices, heat exchangers.

Environmental protection: key components of flue gas desulfurization (FGD) systems.

ASME SB444 UNS N06625 Welded Pipe size

Nominal size [inches]	Outside diameter [inches]	Outside diameter [mm]	Wall thickness [inches]	Wall thickness [mm]	Weight [lb/ft]	Weight [kg/m]
1/8	0.405	10.3	0.068	1.73	0.24	0.37
1/4	0.54	13.7	0.088	2.24	0.42	0.84
1/2	0.84	21.3	0.109	2.77	0.85	1.27
3/4	1.05	26.7	0.113	2.87	1.13	1.69
1	1.315	33.4	0.133	3.38	1.68	2.5
1.25	1.66	42.2	0.14	3.56	2.27	3.39
1.5	1.9	48.3	0.145	3.68	2.72	4.05
2	2.375	60.3	0.154	3.91	3.65	5.44
2.5	2.875	73	0.203	5.16	5.79	8.63
3	3.500	88.9	0.216	5.49	7.58	11.29
3.5	4.000	101.6	0.226	5.74	9.11	13.57
4	4.500	114.3	0.237	6.02	10.79	16.07
5	5.563	141.3	0.258	6.55	14.62	21.77
6	6.625	168.3	0.28	7.11	18.97	28.26
8	8.625	219.1	0.322	8.18	28.55	42.55
10	10.75	273	0.365	9.27	40.48	60.31
12	12.75	323.8	0.406	10.31	53.52	79.73
14	14	355.6	0.375	11.13	54.57	94.55
16	16	406.4	0.5	12.7	82.77	123.3
18	18	457	0.562	14.27	104.67	155.8
20	20	508	0.594	15.09	123.11	183.42
24	24	610	0.688	17.48	171.29	255.41
32	32	813	0.688	17.48	230.08	342.91