Incoloy 925 (UNS N09925): Certified Supplier of Round Bars, Seamless Tubes & Plates
Date: 2026年6月27日 Categories: News Views: 15
By Shanghai Hangbo Alloy Group Co., Ltd. | ISO 9001:2015 Certified | 2026
Quick Answer: What Is Incoloy 925? (60-80 words)
Incoloy 925 (UNS N09925 / W.Nr. 2.4852) is a precipitation-hardenable nickel-iron-chromium alloy that combines the high strength of a precipitation-hardened alloy with the excellent corrosion resistance of Incoloy 825. It is specifically designed for high-stress applications in aggressive sour gas environments containing hydrogen sulfide, chlorides, and carbon dioxide. Its unique chemistry provides outstanding resistance to pitting, crevice corrosion, and stress-corrosion cracking (SCC).
Product Overview (150 words)
Incoloy 925 (UNS N09925) is a high-performance member of the nickel-iron-chromium alloy family. Strengthened by additions of titanium and aluminum through a specific age-hardening heat treatment, it offers roughly twice the yield strength of non-hardened alloys while maintaining exceptional chemical stability. Its primary properties include superior resistance to sulfide stress cracking and polythionic acid stress-corrosion cracking, making it a "gold standard" for the Oil & Gas, Chemical Processing, and Marine Engineering industries.
Founded in 2012, Shanghai Hangbo Alloy Group Co., Ltd. has established itself as a premier manufacturer and technical partner for special metals. We are ISO 9001:2015 certified and operate a global distribution network across 32 countries. Our Incoloy 925 products—available in round bars, forgings, seamless tubes, and plates—are manufactured to rigorous zero-defect standards, ensuring safety and reliability in the world's most demanding subsea and downhole environments.
Executive Standards
Shanghai Hangbo Alloy Group supplies Incoloy 925 in compliance with the following international material specifications:
| Product Form | ASTM | ASME | AMS | W.Nr./DIN |
|---|---|---|---|---|
| Round Bar / Forging | ASTM B805 / B564 | — | — | 2.4852 |
| Seamless Tube / Pipe | ASTM B983 | — | — | 2.4852 |
| Sheet / Plate / Strip | ASTM B424 (Ref) | — | — | 2.4852 |
| Wire | ASTM B805 | — | — | 2.4852 |
Chemical Composition (Typical values per ASTM B805)
Our materials undergo 100% OES (Optical Emission Spectroscopy) verification to ensure absolute chemical precision.
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | 42.0 | 46.0 |
| Chromium (Cr) | 19.5 | 22.5 |
| Iron (Fe) | Balance | Balance |
| Molybdenum (Mo) | 2.5 | 3.5 |
| Copper (Cu) | 1.5 | 3.0 |
| Titanium (Ti) | 1.9 | 2.4 |
| Aluminum (Al) | 0.1 | 0.5 |
| Carbon (C) | — | 0.03 |
| Manganese (Mn) | — | 1.0 |
| Silicon (Si) | — | 0.5 |
| Sulfur (S) | — | 0.03 |
Mechanical & Physical Properties
Incoloy 925 provides high mechanical strength alongside excellent ductility.
Room-Temperature Mechanical Properties (Age-Hardened)
| Property | Value |
|---|---|
| Tensile Strength (UTS) | ≥ 1034 MPa (150 ksi) |
| Yield Strength (0.2% Offset) | ≥ 724 MPa (105 ksi) |
| Elongation (A5) | ≥ 20% |
| Hardness (Rockwell C) | 28 - 38 HRC |
High-Temperature Performance (Strength Retention)
| Temperature (°C) | Yield Strength (MPa) | Tensile Strength (MPa) |
|---|---|---|
| 20°C | 730 | 1050 |
| 200°C | 680 | 1010 |
| 400°C | 640 | 980 |
| 540°C | 610 | 950 |
How Shanghai Hangbo Produces Incoloy 925
1. Incoloy 925 Round Bars & Forgings
- Triple-Melt Strategy: We utilize EAF + VIM (Vacuum Induction Melting) + ESR (Electroslag Remelting) to achieve ultra-pure ingots with minimal inclusions.
- Precision Forging: Ingots are hot-forged at controlled temperatures to refine the grain structure and eliminate internal porosity.
- Age Hardening: A two-stage heat treatment process (Solution Annealing + Aging) is performed to precipitate the γ′ phase, maximizing strength.
- Surface Finishing: Bars are peeled, centerless ground, or polished to meet h9/h11 tolerances.
2. Incoloy 925 Seamless Tubes & Pipes
- Billet Preparation: High-quality ESR billets are cut and centered for extrusion.
- Hot Extrusion: Material is extruded into mother tubes using high-tonnage presses.
- Cold Reduction: Cold pilgering or drawing is used to achieve high dimensional accuracy and superior surface finish.
- Integrity Testing: Every tube undergoes 100% Hydrostatic and Eddy Current testing.
3. Incoloy 925 Steel Plates & Strips
- Hot Rolling: Slabs are rolled into plates with intermediate heating to maintain plasticity.
- Solution Annealing: Plates are heat-treated in a protective atmosphere to ensure a clean surface.
- Quality Verification: Ultrasonic testing is conducted per ASTM A578 to ensure zero internal delamination.
Industry Applications
| Industry | Typical Component | Why Incoloy 925? |
|---|---|---|
| Oil & Gas | Hangers, Landing Nipples, Valves | Resists sulfide stress cracking in sour gas wells. |
| Chemical Processing | Pumps, Fasteners, Shafts | Handles highly corrosive acid media. |
| Marine | High-strength fasteners, Propeller shafts | Excellent resistance to pitting in seawater. |
| Subsea | Tool joints, Well-head components | Reliable under extreme hydrostatic pressure and corrosion. |
Quality Assurance: 7-Stage Zero-Defect Inspection
Shanghai Hangbo Alloy Group guarantees the reliability of every Incoloy 925 shipment through a rigorous inspection protocol:
- OES/PMI: 100% verification of chemical composition per heat.
- UT (Ultrasonic Testing): Performed per ASTM A388 to detect internal flaws.
- ET (Eddy Current Testing): 100% surface defect inspection for tubes.
- Hydrostatic Test: Verification of pressure integrity for seamless pipes.
- Mechanical Test: Destructive testing (tensile, yield, impact) in our certified lab.
- Dimensional Report: Precise measurement verification for all tolerances.
- Visual Inspection: Final check for surface finish, markings, and packaging.
Deliverables: ISO 9001:2015 certificate, EN 10204 3.1 MTC, and SGS/TÜV/BV third-party reports upon request.
Frequently Asked Questions (FAQ)
Q1: What is Incoloy 925 used for?
Incoloy 925 is primarily used for high-strength, corrosion-resistant components in the oil and gas industry, specifically for downhole and well-head equipment in sour gas environments.
Q2: What is the maximum service temperature for Incoloy 925?
The recommended maximum service temperature for Incoloy 925 in corrosive environments is approximately 540°C (1000°F) to maintain mechanical stability.
Q3: How does Incoloy 925 compare to Incoloy 825?
Both share similar corrosion resistance, but Incoloy 925 is precipitation-hardenable, providing roughly twice the yield strength of Incoloy 825 after heat treatment.
Q4: How does Incoloy 925 compare to Inconel 718?
Inconel 718 offers higher strength at much higher temperatures, but Incoloy 925 is more cost-effective for oilfield applications where Incoloy 825-level corrosion resistance is required with enhanced strength.
Q5: What product forms does Shanghai Hangbo supply?
We supply Incoloy 925 in round bars (6mm-500mm), forgings, seamless tubes, pipes, and customized plates.
Q6: What certifications come with the material?
Every order is shipped with a full Mill Test Certificate (MTC) per EN 10204 3.1 and ISO 9001 quality documentation.
Q7: What is the price of Incoloy 925 per kg?
Pricing depends on the current nickel LME and order dimensions. Contact us for a competitive, real-time quote.
Q8: Does Shanghai Hangbo ship internationally?
Yes. We have a logistics network serving 32 countries, supporting door-to-door delivery and DDP terms.
Contact & CTA
| Channel | Contact Information |
|---|---|
| Website | www.nickel-alloy.com |
| specialalloy001@gmail.com | |
| WhatsApp / Phone | +86 13611656360 |
| Skype | +86 13611656360 |
| Address | Shanghai, China |
Inquiries are answered within 10 minutes. We support OEM/ODM for global distributors.
Shanghai Hangbo Alloy Group Co., Ltd. — Your Trusted Partner in High-Performance Special Alloys.
