Alloy 625 Stainless Steel Coil Tubing Price

Short Description:

The patent for Inconel 625 was issued on December 8th, 1964 after long years of research into a Ni-Cr-Mo-Nb alloy (Nickel- Chromium- Molybdenum -Niobium). It is a “superalloy”, because of its ability to withstand high temperatures, stress and corrosion. Mechanical properties Density 0.303 lb/in3 (8.44 g/cm3) melting point 2350 – 2460°F (1280 – 1350°C), Specific Heat 0.098 Btu/lb x °F (410 Joules/kg x °K), and Magnetic Permeability (75°F, 200 oersted): 1.0006.

UNS N06625 Inconel 625 is a nickel-based superalloy with excellent resistance to oxidation and corrosion, in conditions ranging from jet engine propulsion systems to chemical processing of oxidizing and reducing acids. The nickel-chromium combination of Inconel 625 is reinforced by the addition of molybdenum and niobium, which is alloyed through solid solution strengthening, and this makes it possible to maintain high strength and toughness at temperatures ranging from cryogenic up to 1093°C.

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Chemical Composition, %

Alloy 625 material is non-magnetic, austenitic, and displays high tensile strength, fabricability, and brazeability. Due to its high nickel content, this alloy is nearly immune to chloride ion stress-corrosion cracking and pitting, which is commonly found in metals in seawater applications like heat exchangers, fasteners, and cable sheathing.

Cr	Ni	Mo	Co + Nb	Ta	Al	Ti	C
20.00-30.00	Remainder	8.0-10.0	1.0 max	3.15-4.15	.40 max	.40 max	.10 max

Fe	Mn	Si	P	S
5.0 max	.50 max	.50 max	.015 max	.015 max

In what applications is Inconel 625 used?

Inconel 625 is mainly used in Aerospace industry
Aircraft ducting systems
Jet engine exhaust systems
Engine thrust-reverser systems
Specialized seawater equipment
Chemical process equipment

ASTM Specifications

Pipe Smls	Pipe Welded	Tube Smls	Tube Welded	Sheet/Plate	Bar	Forging	Fitting	Wire
B444	B705	B444	B704	B443	B446	-	-	-

Mechanical Properties

Temp° F	Tensile (psi)	.2% Yield (psi)	Elongation in 2 “ (%)
70	144,000	84,000	44
400	134,000	66,000	45
600	132,000	63,000	42.5
800	131,500	61,000	45
1000	130,000	60,500	48
1200	119,000	60,000	34
1400	78,000	58,500	59
1600	40,000	39,000	117

Inconel 625 Melting Point

Melting Point

1290 - 1350 °C

2350 - 2460 °F

Inconel 625 Equivalent

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
Inconel 625	2.4856	N06625	NCF 625	NA 21	ХН75МБТЮ	NC22DNB4MNiCr22Mo9Nb	NiCr23Fe

Alloy 625 Tubing

Alloy 625 is an austenitic nickel-chromium-molybdenum superalloy known for being resistant to crevice corrosion and oxidation at elevated temperatures. These temperatures can range from cryogenic to extremely hot levels of 1,800°F. The behavior and chemical composition of this grade make it well suited for nuclear and aerospace applications. Also, with the addition of niobium, alloy 625 tubing finds itself with increased strength sans heat treating. This property makes the grade an excellent option for fabrication.

Product Specifications

ASTM B444 / ASME SB444 / NACE MR0175

Size Range