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Nickel Alloy 718 / Inconel 718 Seamless Alloy Pipe 20ft Length Round Shape

Very competitive price and the tubes are well polished, we are very satisfied with Spezilla from our cooperation since year 2010.

—— Nathalie Gulli - Mexico

Spezilla supports our group very well, and now we are approved supplier of goverment, they are reliable and flexible! Spezilla always answers!

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Good quality, fast delivery, Spezilla has been supplying heat exchanger tubes for our projects since 2008, we really appreciate your support!

—— Massimiliano Rossi - Italy

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Nickel Alloy 718 / Inconel 718 Seamless Alloy Pipe 20ft Length Round Shape

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Large Image :  Nickel Alloy 718 / Inconel 718 Seamless Alloy Pipe 20ft Length Round Shape

Product Details:
Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001, TS16949, PED, AD2000
Model Number: SMLS
Payment & Shipping Terms:
Minimum Order Quantity: 500KGS
Packaging Details: WOODEN BOXED
Delivery Time: Ex-Mill 15 - 30DAYS
Payment Terms: T/T, L/C
Supply Ability: 100TONS/MONTH
Detailed Product Description
Product Name: Nickel Alloy Tube Specification: ASMT B444
Test Certificate: EN10204 3.1, EN10204 3.2 Material Grade: UNS N0718
Size Range: 25.4 X 2.11MM Length: 20ft
Finishing Options: Annealed & Pickled Packaging: Wooden Boxed
Shape: Round
High Light:

nickel alloy tubing


polished nickel tubing

ASTM B444 Alloy 625 / UNS N06625 Nickel Alloy SMLS Tube WNR 2.4856 Tubing

Alloy 718 (UNS N07718, W Nr 2.4668) is an austenitic nickel-based superalloy. Alloy 718 exhibits excellent high yield tensile and creep-rupture properties at temperatures up to 1300ºF and oxidation resistance to 1800ºF. Alloy 718 is used in applications that require high strength such as parts for jet engines and high speed airframe parts such as wheels, buckets, spacers and high temperature bolts and fasteners.


Inconel 718 is a nickel-chromium-molybdenum alloy designed to resist a wide range of severely corrosive environments, pitting and crevice corrosion. This nickel steel alloy also displays exceptionally high yield, tensile, and creep-rupture properties at high temperatures. This nickel alloy is used from cryogenic temperatures up to long term service at 1200° F. One of the distinguishing features of Inconel 718’s composition is the addition of niobium to permit age hardening which allows annealing and welding without spontaneous hardening during heating and cooling. The addition of niobium acts with the molybdenum to stiffen the alloy’s matrix and provide high strength without a strengthening heat treatment. Other popular nickel-chromium alloys are age hardened through the addition of aluminum and titanium. This nickel steel alloy is readily fabricated and may be welded in either the annealed or precipitation (age) hardened condition. This superalloy is used in a variety of industries such as aerospace, chemical processing, marine engineering, pollution-control equipment, and nuclear reactors.

Thus precipitation-hardening treatments are not required. This combination of elements also is responsible for superior resistance to a wide range of corrosive environments of unusual severity as well as to high-temperature effects such as oxidation and carburization.


Item Code: Alloy718
Tube OD.: 25.40MM
Wall: 2.11MM
Length: 6000MM
Material: C276, UNS N10276
Standard: ASTM B626
Finish: AP / Annealed & Pickled
Type: Seamless Cold Drawn
Certification: ISO9001:2015
Mill Test Certificate: EN10204 3.1 / 3.2
Packing: Sleeved, Wooden Boxed


Technical Data

Mechanical Properties


Temper Annealed
Tensile Rm 100 ksi (min)
Tensile Rm 690 MPa (min)
R.p. 0.2% Yield 41 ksi (min)
R.p. 0.2% Yield 290 MPa (min)
Elongation (2” or 4D gl) 40 % (min)


Physical Properties (Room Temperature)


Specific Heat (0-100°C) 427 J.kg-1.°K-1
Thermal Conductivity 9.4 W.m -1.°K-1
Thermal Expansion 11.2 μm/μm/°C
Modulus Elasticity 221 GPa
Electrical Resistivity 1.30 μohm/cm
Density 8.89 g/cm3


Chemical Composition (% by weight)



Element Min Max
C - 0.02
Si - 0.08
Mn - 1
P - 0.03
S - 0.3
Co - 2.5
Fe 4 7
Cr 14.5 16.5
Cu 3 4.5
Mo 15 17
V - 0.35
Ni Balance




Available Tube Product Forms:



Seam welded and cold redrawn.

Seam welded, cold redrawn and annealed.
Quality Assurance:
Spezilla's welded precision stainless steel tubes are produced acc. to the following process and inspection to assure our quality:
1. Chemical Composition Analysis Test With 100% PMI.
2. Solution Annealing / Bright Annealed.
3. 100% Hydrostatic Test and 100% Eddy Current Test
4. Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test.
5. Impact Test subject to Standard request.
6. Grain Size Test and Intergranular Corrosion Test.
7. Visual Test and Endoscope Test for Surface Quality Test

Typical Applications:

Pollution control

Mixed acid chemicals

Pulp and paper production

Waste treatment

Very high chloride environments

Typical Manufacturing Specifications:



Also individual customer specifications.

Nickel Alloy 718 / Inconel 718 Seamless Alloy Pipe 20ft Length Round Shape 0

Contact Details
Spezilla Tube Co., Ltd. (Shanghai)

Contact Person: Will Ma

Tel: +86 13918539222

Send your inquiry directly to us (0 / 3000)