High Durability Incoloy 925 Alloy Wire for Industrial Heat Exchangers and Thermal Processing

1. Product Information‌

‌Product Name‌: Incoloy 925 Wire
‌Material Type‌: Nickel-Iron-Chromium Superalloy (Age-Hardenable, Sulfide Stress Corrosion Resistant)
‌Standards‌: ASTM B425, AMS 5827, UNS N09925, DIN 2.4852
‌Forms Available‌: Round wire, flat wire, spooled wire, and custom-drawn profiles.
‌Diameter Range‌: 0.15 mm to 12.5 mm (customizable upon request).
‌Surface Finish‌: Bright annealed, pickled, or electro-polished.
Operating Temperature‌:

• Continuous service: -200°C to 450°C

• Short-term exposure: Up to 650°C

‌Certifications‌: Compliant with NACE MR-0175/ISO 15156 (Sour Service), API 6A, and ASME SB425.

‌2. Characteristics‌

Incoloy 925 wire is an age-hardenable superalloy optimized for extreme mechanical strength and corrosion resistance in aggressive environments:

• ‌High Strength‌: Achieves 1100-1450 MPa tensile strength after cold working and aging, surpassing Inconel 718 in chloride-rich conditions.

• ‌Sulfide Stress Corrosion Cracking (SSCC) Resistance‌: Mo-Cu-Ti synergy prevents cracking in H₂S-containing environments (NACE Level VII compliance).

• ‌Acid Resistance‌: Resists sulfuric, phosphoric, and hydrochloric acids due to Ni-Cr-Mo matrix.

• ‌Thermal Stability‌: Retains 85% of room-temperature strength at 400°C.

• ‌Fatigue Resistance‌: Endurance limit of 550 MPa (10⁷ cycles) in seawater.

• ‌Fabrication Flexibility‌: Compatible with cold heading, machining, and TIG welding.

‌3. Technology‌

‌Manufacturing Process‌:

• ‌Vacuum Induction Melting (VIM) + Vacuum Arc Remelting (VAR)‌: Ensures ultra-low gas content (O₂ < 30 ppm, N₂ < 50 ppm).

• ‌Thermomechanical Processing‌:

• Hot rolling at 950-1150°C to break down cast structures.

• Cold drawing with 20-50% reduction for strain hardening.

• ‌Heat Treatment‌:

• Solution annealing at 980-1010°C followed by water quenching.

• Aging at 620-650°C for 16 hours to precipitate γ' (Ni₃(Ti,Al)) strengthening phases.

• ‌Surface Engineering‌: Electropolishing (Ra < 0.5 μm) for enhanced pitting resistance.

‌Quality Control‌:

• Inductively coupled plasma optical emission spectrometry (ICP-OES) for trace element verification.

• Hydrogen embrittlement testing per ASTM F519.

• Stress corrosion cracking (SCC) testing in boiling 42% MgCl₂ solution per ASTM G36.

‌4. Theory‌

The alloy’s exceptional properties derive from its advanced metallurgical design:

• ‌Age-Hardening Mechanism‌: Ti and Al form coherent Ni₃(Ti,Al) precipitates during aging, creating lattice strain fields that block dislocation motion.

• ‌Molybdenum-Copper Synergy‌: Mo enhances chloride SCC resistance, while Cu improves reducing acid corrosion via cathodic polarization.

• ‌Grain Boundary Engineering‌: Controlled Ti/C ratio prevents M₂₃C₆ carbide formation at grain boundaries, eliminating sensitization risks.

• ‌Nickel Matrix Dominance‌: High Ni content stabilizes austenite and ensures ductility at cryogenic temperatures.

• ‌Hydrogen Embrittlement Mitigation‌: Low C content (<0.03%) and Ti scavenging minimize hydrogen trap sites.

‌5. Application‌

Incoloy 925 wire is critical in industries requiring simultaneous high strength and corrosion resistance:

• ‌Oil & Gas‌:

• Downhole wireline cables, subsurface safety valve springs, and sour gas wellhead fasteners.

• Wire-reinforced hoses for acid stimulation (15-28% HCl environments).

• ‌Marine Engineering‌:

• Mooring lines for deep-sea platforms, seawater pump shafts, and subsea connector pins.

• ‌Chemical Processing‌:

• Coil springs in hydrochloric acid reactors and wire mesh for phosphoric acid concentrators.

• ‌Aerospace‌:

• High-stress fasteners for jet engine nacelles and fuel system components.

• ‌Nuclear‌:

• Control rod drive mechanisms and reactor coolant system springs.

  
  

6. Parameters

Our Advantage

1. Market Leader

Top 5 in China's nonferrous metal industry

2. Flexible products

Thousands of product specifications,Meet multiple needs of buyers

3. Low MOQ

Can customize samples

4. Short production lead time，fast delivery of whole cabinet

5. Professional inspection equipment

Before delivery, we will use spectrometers, tensile testers and other professional equipment to conduct a comprehensive inspection of the products to ensure that the goods are qualified for acceptance

6. Professional business team

Quickly responds to customer inquiries,24-hour professional quotation online

The salesperson will follow the customer's requirements for the use of the product,Professionally recommend more appropriate performance and price products to customers

7. Intact packaging

Packaging according to customer needs.You can customize wooden boxes to ensure that the goods arrive at the destination in good condition

8. Various payment methods

Facilitate customer payment

9. Get good reviews from customers

Old customers have long-term cooperation,The longest is more than 7 years

10. Received various awards

Google is very recognized by us,They give us awards every year