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Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Specifications
Delivery Time :
Depends on quantity
Size :
Customized
MOQ :
500KGS
Material :
UNS N07718 (Inconel 718H)
Supply Ability :
Accdording to customer's request
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015
Specification :
ASTM B983
Application :
Aerospace, Gas turbines, Deep-sea, Chemical industries
Brand Name :
YUHONG
Surface :
Bright Polished
Price :
Negotiable
Packaging Details :
Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Type :
Seamless
Place of Origin :
China
Payment Terms :
L/C,T/T
Model Number :
ASTM B111 C70600
Product Name :
Nickel Alloy Tube
Description
  • YUHONG brand goods have been already exported to more than 85 countries With more than 35 years' experience, because of strict quality control policy, excellent sales service, delivery on time. YUHONG won more and more new clients and got more and more repeat orders from old clients, in YUHONG People's mind: Quality is First Important!


Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked

ASTM B983 specification covers high strength, seamless pipe and tube of nickel alloys, Pipe and tube shall be supplied in the cold worked or cold worked and precipitations hardened or solution annealed plus precipitation hardened and descaled conditions. When atmosphere control is used, descaling is not necessary.

Nickel Alloy Tube manufactured in accordance with ASTM B983 standard, with material designation UNS N07718 (Inconel 718H). This alloy is a precipitation-hardening nickel-chromium-iron based superalloy. The 718H version undergoes a specific aging heat treatment to achieve higher strength and creep resistance than conventional Inconel 718. The tube can be seamless or welded, offering excellent high-temperature strength, fatigue resistance, corrosion resistance, and oxidation resistance. It is widely used in aerospace, gas turbines, nuclear reactors, deep-sea applications, and chemical industries under high temperature, high pressure, and corrosive environments.

ISO UNS / ASTM GB DIN JIS
NiCr19Nb5Mo3 UNS N07718 / Inconel 718 GH4169 2.4668 NCF 718



1.Chemical & Mechanical Properties

ASTM B983 N07718 Chemical Composition (%)
C

≤0.08
Mn ≤0.35
Si ≤0.35
P ≤0.015
S ≤0.015
Cr 17.0-21.0
Co ≤1.0
Mo 2.80-3.30
Nb 4.75-5.50
Ti 0.65-1.15
Al 2.20-0.80
B ≤0.006
Fe REM
Cu ≤0.30
Ni 50.0-55.0


Mechanical Properties

Condition
 Tensile Str Ksi(Mpa) Yield Str Ksi(Mpa) Elongation(%) Hardness Rc
Solution Ann + prec hard
 ≥150(1034) ≥125(862) ≥20 ≤40

*Recommended Solution Annealing Treatment: 1875 ± 25°F (1024 ± 14°C) for 1 to 2 h, water quench

Recommended Precipitation Hardening Treatment: 1425–1475°F (774–802°C) hold 6 to 8 h, air cool


Outside Diamerer Tolerance of ASTM B983(Hot-Finished Tube)

Norminal OD,in,(mm) OD,in,(mm)
Plus Minus
3/4(19) to 1 1/2(38),incl 0.015(0.4) 0.031(0.8)
Over 1 1/2(38.1) to 4(102),incl 0.031(0.8) 0.031(0.8)
Over 4(102) to 9 1/4(235),incl 0.062(1.6) 0.031(0.8)
Over 9 1/4(235) to 12(305),incl 0.110(2.8) 0.110(2.8)


Wall Thickness Tolerance of ASTM B983(Hot-Finished Tube)
WT,in,(mm)
% of Thickness of Specified
Nominal wall
% of Thickness of Specified
Minimum wall
Plus Minus Plus Minus
3/4(19) to 1 1/2(38),incl 12.5 12.5 28.5 0
Over 1 1/2(38.1) to 4(102),incl 12.5 12.5 28.5 0
Over 4(102) to 9 1/4(235),incl 12.5 12.5 28.5 0
Over 9 1/4(235) to 12(305),incl 12.5 12.5 ... ...


2. Key Adventages

  • Exceptional High-Temperature Strength: Strengthened by γ' phase precipitation, it maintains extremely high strength even under harsh conditions up to 815°C (1500°F).

  • Superior Creep Resistance: At 700-750°C and 100MPa stress, its creep life far surpasses that of similar alloys, crucial for ensuring the long-term safe operation of ultra-supercritical power plants.

  • Excellent High-Temperature Corrosion Resistance: High chromium (approximately 25%) and cobalt (approximately 20%) content provides resistance to oxidation, carburization, sulfidation, and coal ash/flue gas corrosion at high temperatures.

  • Excellent Microstructural Stability: Through compositional optimization (increasing Al and decreasing Ti, Nb, and Si), harmful phases are less likely to precipitate during long-term service, ensuring long-term performance reliability.

3. Key Applications

  • Aerospace: Engine casings, turbine disks, blades, rings, combustion chamber components

  • Gas turbines: High-temperature piping, seals, fasteners

  • Nuclear industry: Reactor internals, control rod guide tubes

  • Petrochemical: Sour service (H₂S/CO₂) downhole tubing, wellhead equipment, heat exchanger tubes

  • Deep-sea engineering: Subsea connectors, umbilical tubes

  • Automotive: High-temperature turbocharger lines


Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked

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Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked

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Product Detail
Delivery Time :
Depends on quantity
Size :
Customized
MOQ :
500KGS
Material :
UNS N07718 (Inconel 718H)
Supply Ability :
Accdording to customer's request
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015
Contact Supplier
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked
Nickel Alloy Tube, ASTM B983 UNS N07718 (Inconel 718H), Precipitation Hardened or Cold Worked

YUHONG HOLDING GROUP CO., LTD

Verified Supplier
3 Years
ningbo
Since 1990
Business Type :
Manufacturer, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Heat Exchanger Tube, Studded Tube, Duplex Stainless Steel Heat Exchanger Tube
Total Annual :
50M-70M
Employee Number :
50~800
Certification Level :
Verified Supplier
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