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High Strength Inconel 718 Nickel Chromium Superalloy with Exceptional Weldability and Temperature Resistance up to 1300°F
High Strength Inconel 718 Nickel Chromium Superalloy with Exceptional Weldability and Temperature Resistance up to 1300°F
Specifications
Brand Name :
Baosteel，TISCO
Model Number :
Incoloy 800 / Incoloy 800H / Incoloy 800HT / Incoloy 825 / Hastelloy C-276 / Hastelloy C-22 / Inconel 625 / Inconel 718
Certification :
EN 10204 Type 3.1 / 3.2 available
Place of Origin :
MADE IN CHAINA
MOQ :
100kg
Price :
Negotiable (Request a Quote)
Payment Terms :
T/T，D/P，D/A，Western Union，PayPal
Supply Ability :
10000tons
Delivery Time :
15-25days
Packaging Details :
Wooden pallets, wooden crates, woven bags, etc.
Country of Origin :
MADE IN CHAINA
Brand :
Baosteel，TISCO
Certifications :
ISO/EN 10204 Type 3.1 / 3.2 available
Grade :
Incoloy 800 / Incoloy 800H / Incoloy 800HT / Incoloy 825 / Hastelloy C-276 / Hastelloy C-22 / Inconel 625 / Inconel 718
MOQ :
100kg
Packaging :
Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Supply Capacity :
10000tons
Description
High Strength Inconel 718 Precipitation Hardenable Nickel Chromium Superalloy

Inconel 718 is a precipitation-hardenable nickel-chromium superalloy that delivers exceptional strength from -423°F (-253°C) up to 1300°F (700°C). Its unique combination of high tensile strength, fatigue resistance, creep rupture properties, and excellent weldability sets it apart from other high-strength superalloys.

Unlike many precipitation-hardened alloys that are prone to post-weld cracking, Inconel 718 exhibits outstanding weldability - even in complex, thin-walled fabrications. This makes it the #1 choice for aerospace gas turbine engines, liquid-fueled rockets, high-temperature fasteners, and critical oil & gas downhole components.

Chemical Composition

The unique age-hardenable characteristics come from a precise balance of niobium (columbium), titanium, and aluminum, which form strengthening precipitates (gamma double-prime and gamma prime) during heat treatment.

Element Content (%) Role
Nickel (Ni) 50.0 - 55.0 Base element - provides corrosion resistance & austenitic stability
Chromium (Cr) 17.0 - 21.0 Oxidation resistance & protection against sulfur compounds
Iron (Fe) Balance (Rem) Provides cost-effective stability & structural integrity
Niobium + Tantalum (Nb+Ta) 4.75 - 5.50 Primary strengthening element (gamma double-prime precipitate)
Molybdenum (Mo) 2.80 - 3.30 Pitting resistance & solid-solution strengthening
Titanium (Ti) 0.65 - 1.15 Secondary strengthener (gamma prime precipitate)
Aluminum (Al) 0.20 - 0.80 Secondary strengthener (gamma prime precipitate)
Cobalt (Co) 1.00 max Limited for nuclear compatibility
Carbon (C) 0.08 max Controlled for carbide stability
Manganese (Mn) 0.35 max Trace element
Silicon (Si) 0.35 max Trace element
Phosphorus (P) 0.015 max Controlled for ductility
Sulfur (S) 0.015 max Controlled for hot workability
Boron (B) 0.006 max Grain boundary strengthener
Copper (Cu) 0.30 max Trace element
Niobium is also referred to as Columbium (Cb) in older specifications. The combined Nb+Ta content is critical for precipitation hardening.
Typical Mechanical Properties

Inconel 718 is supplied in two main conditions: Solution Annealed (for fabrication) and Aged (precipitation-hardened for maximum strength). The aged condition delivers the alloy's signature high-temperature performance.

Product Form Condition Tensile Strength (KSI / MPa) Yield Strength 0.2% Offset (KSI / MPa) Elongation (%) Hardness
Sheet (AMS 5596) Solution Annealed 140 KSI (965 MPa) 80 KSI (552 MPa) 30 102 HRB max
Sheet (AMS 5596) Aged 180 KSI (1241 MPa) 150 KSI (1034 MPa) 12 ≥36 HRC
Sheet (AMS 5597) Solution Annealed 140 KSI (965 MPa) 75 KSI (517 MPa) 30 ≤25 HRC
Sheet (AMS 5597) Aged 180 KSI (1241 MPa) 150 KSI (1034 MPa) 15 ≥38 HRC
Bar / Rod (ASTM B637) Solution Annealed + Aged 185 KSI min (1276 MPa) 150 KSI min (1034 MPa) 12 min 36 HRC min
Key Performance Notes
  • At 1200 °F (649°C): Retains approximately 70% of room temperature yield strength.
  • Creep Rupture: Excellent resistance to creep deformation up to 1300°F (700°C).
  • Fatigue Strength: Superior to most other superalloys in the high-cycle fatigue regime.
  • Cryogenic Performance: Elongation can exceed 20% at -320°F (-196°C) with no ductile-to-brittle transition.
Available Products & Specifications

We supply Inconel 718 in all standard mill forms, cut to size, with full traceability to AMS, ASTM, and ASME standards. Custom dimensions and special heat treatments are available upon request.

Product Form Size Range Key Specifications
Round Bar / Rod Dia: 6mm - 300mm (0.25" - 12") ASTM B637, ASME SB637, AMS 5662, AMS 5663, AMS 5664, ISO 9723, DIN 17752
Wire Dia: 0.1mm - 12mm AMS 5832, ISO 9724, DIN 17753
Plate / Sheet / Strip Thk: 0.5mm - 100mm ASTM B670, ASTM B906, AMS 5596, AMS 5597, AMS 5598, AMS 5862, ISO 6208, DIN 17750
Seamless Pipe / Tube OD: 6mm - 219mm SAE AMS 5589, SAE AMS 5590, ASTM B983
Welded Pipe / Tube OD: up to 914mm SAE AMS 5590 (welded annealed), ASTM B983
Fittings (Flanges, Elbows, Tees) All schedules ASTM B366, ASME SB366
Forgings (Rings, Discs, Blocks) Custom sizes ASTM B637, ASME SB637, AMS 5663, ISO 9725, DIN 17754
Fastener Stock Custom ASTM B637 (Condition A or Aged), AMS 5662
Additional Specifications Met
  • European: VdTÜV 499, EN 10095, BS 3072/3073/3076 NA18
  • Aerospace: Rolls-Royce MSRR, GE, Pratt & Whitney (contact for specific PWA or SPS numbers)
  • Oil & Gas: NACE MR-01-75 (sour gas service - certified on request)
Welding Products Available
  • Filler Wire: ERNiCrFe-2 or ERNiCrMo-10 (per AWS A5.14)
  • Welding Electrode: ENiCrFe-2 or ENiCrMo-10 (per AWS A5.11)
Note: Inconel 718's exceptional weldability makes it suitable for welding to itself and to dissimilar alloys like stainless steels using appropriate filler metals.
Why Choose Our Inconel 718?
  1. Certified Quality: Every shipment includes full traceability and an EN 10204 Type 3.1 Mill Test Certificate (MTC) - available with AMS, ASTM, or ASME compliance.
  2. Extensive Inventory: Large stock of bars (round & flat), sheet, plate, and pipe in a range of sizes for immediate dispatch.
  3. Precision Processing: In-house cutting (shear, plasma, waterjet, cold saw) and machining (turning, milling) to your exact dimensions.
  4. Technical Expertise: Our metallurgists can assist with heat treatment specifications (solution annealed, aged, or double-aged) and material selection.
  5. Competitive Pricing: Direct mill access offers cost-effective solutions for both prototypes and production volumes.
  6. Global Logistics: Expert export packaging ensures safe, delivered-duty-paid (DDP) service worldwide.
Frequently Asked Questions (FAQ)
Q: What is the difference between Inconel 625 and Inconel 718?
A: Inconel 625 is solid-solution strengthened - high strength as-welded, excellent corrosion resistance, but lower high-temperature strength than 718. Inconel 718 is precipitation-hardened - significantly higher yield and creep strength up to 1300°F (700°C), but requires aging heat treatment. For aerospace rotating parts and high-temperature fasteners, choose 718. For seawater and chemical processing, choose 625.
Q: Can Inconel 718 be welded in the aged condition?
A: Typically, 718 is welded in the solution annealed condition (Condition A) and then aged after welding to restore full strength. However, it can also be welded in the aged condition with proper procedures (specifically for repair). Contact us for weld procedure development support.
Q: What heat treatment conditions are available?
A: We supply:
  • Solution Annealed (Condition A): Ready for fabrication.
  • Solution Annealed + Aged (Condition B): Fully precipitation-hardened, maximum strength.
  • Solution Annealed + Double Aged: Optimized for certain stress-rupture requirements (per AMS 5663/5664).
Q: Do you provide third-party inspection?
A: Yes. We can arrange SGS, TÜV, BV, or Lloyd's inspection at the buyer's cost, including witness testing and dimension checks.
Q: What is the maximum temperature for continuous service?
A: For load-bearing applications, continuous service to 1300 °F (700°C). For intermittent service, excursions to 1400°F (760°C) are possible.
Contact Us for a Competitive Quote

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High Strength Inconel 718 Nickel Chromium Superalloy with Exceptional Weldability and Temperature Resistance up to 1300°F

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Product Detail
Brand Name :
Baosteel，TISCO
Model Number :
Incoloy 800 / Incoloy 800H / Incoloy 800HT / Incoloy 825 / Hastelloy C-276 / Hastelloy C-22 / Inconel 625 / Inconel 718
Certification :
EN 10204 Type 3.1 / 3.2 available
Place of Origin :
MADE IN CHAINA
MOQ :
100kg
Price :
Negotiable (Request a Quote)
Contact Supplier
High Strength Inconel 718 Nickel Chromium Superalloy with Exceptional Weldability and Temperature Resistance up to 1300°F

Shanxi Zhongcheng Metal Co., Ltd.

Verified Supplier
1 Years
Shaanxi
Since 2010
Business Type :
Manufacturer, Distributor/Wholesaler, Importer, Exporter, Trading Company, Seller
Main Products :
Colored Stainless Steel Sheet, Incoloy 800, Stainless Steel Pipe
Total Annual :
20000000-50000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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