Inconel 725 plate (UNS N07725) is a special nickel alloy that's made to be really strong and great at resisting corrosion, even in tough environments. It has the good rust resistance you find in alloy 625, but it's also much stronger thanks to a process called age hardening. This makes it an excellent fit for applications in oil and gas, marine settings, and chemical processing.
Most regular nickel alloys get their strength from a simpler method. But Inconel 725 becomes even stronger thanks to a carefully controlled heat treatment. This preserves its ability to withstand corrosion while enabling it to function dependably in high-pressure and hostile conditions.
Product Details
Specifications & Technical Parameters
| Standards | ASTM B805, ASME SB805, UNS N07725 |
| Thickness range | 0.3 mm – 50 mm(Customized thickness available) |
| Width | 500 mm to 2500 mm |
| Length | 1000 mm to 6000 mm(Cut-to-size service available) |
| Tensile strength | ≥860 MPa |
| Yield strength | ≥690 MPa |
| Elongation | ≥30% |
| Hardness | varies with age-hardening condition |
| Surface treatment | pickling, 2B, BA, No.4, mirror surface, etc. (as required) |
| Testing methods | spectral analysis, tensile test and nondestructive testing (UT/PT) |
| Quality certification | conforming to ISO 9001 and other system certifications, with stable batch consistency. |
Typical chemical composition(wt%)
| Ni | Cr | Nb + Ta | Mo | Fe |
| Balance | 19–21 | 2.75–4 | 7–9 | ≤9 |
Others: trace elements for microstructure stability
Features & Advantages
Superior Corrosion Resistance
The Inconel 725 plate is remarkably resistant to:
- Pitting and crevice corrosion
- Stress corrosion cracking (SCC)
- Hydrogen sulfide (H₂S) environments (sour service)
- Seawater and other chloride-rich conditions
That's why it's the go-to material for things like underwater and offshore systems, because if anything there corrodes and fails, it would be a huge disaster.
High Strength Without Cold Working
This metal gets its amazing strength, both in pulling and bending, from a process called precipitation hardening, and it doesn't need much cold working to achieve that.This makes building and shaping it easier, and it also helps create more dependable structures.
Excellent Fatigue and Crack Resistance
It really cuts down the chances of important parts breaking from wear and tear, because it stays incredibly strong even when there's a lot of stress or repeated pressure.
Typical Applications
You'll find Inconel 725 plate used a lot in places where materials need to be both very strong and resistant to corrosion.
Subsea equipment and wellhead components
Downhole tools and packers
Offshore structural components
Chemical processing equipment
Marine engineering systems
Why Choose Us?
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Rigorous Quality Control for High-Performance Alloys
For Inconel 725 and other nickel alloys, Jiangsu CunRui Metal takes quality very seriously, covering everything from start to finish. This means we do PMI (Positive Material Identification) on every single piece. We also conduct mechanical tests for things like tensile strength and hardness – and impact tests if necessary. On top of that, you can expect ultrasonic testing (UT) and a close surface inspection. If you need it, we can also perform corrosion testing. For your really important projects, you can even get third-party inspections from places like SGS, BV, or TUV. These can help ensure everything meets the requirements and is fully traceable.
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Flexible Supply & Customization to Match Your Exact Needs
We understand non-standard specifications are common in engineering projects. We can cut materials specially for you using plasma, waterjet, or laser. Plus, we do precision machining and get the edges just right. It doesn't matter if you need just a few pieces for testing or a really big order, we can get them to you fast, even if you're in a hurry. Because we've worked with big mills for a long time, we always get the materials we need steadily and at good prices.
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Reliable Global Packaging & Logistics
We pack everything we send out carefully in standard shipping materials, like wooden cases or pallets, to make sure nothing gets rusty or wet.We can handle different shipping arrangements like EXW, FOB, CFR, or CIF. Plus, since we've been shipping to places like the Middle East, Southeast Asia, Europe, and Africa for years, you can trust us to deliver on time, no matter where you are.
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Proven Expertise in Nickel Alloy Supply
Because we know a lot about nickel alloys, we're quick to offer technical and sales help. We also keep very careful records of our quality and stick to our delivery schedules. With our steady supply and good prices, Jiangsu CunRui Metal is a partner you can rely on for even the toughest jobs, whether it's offshore, underwater, or in other industrial settings.
FAQ
Q: Can you provide NACE-compliant Inconel 725 plates?
A: Yes, we can supply materials fully compliant with NACE MR0175 / ISO 15156 for sour service environments.
Q: Do you support third-party inspection?
A: Yes, inspections by SGS, BV, TUV, or customer-appointed agencies are available.
Q: What is your typical delivery time?
A: Stock sizes can be delivered within 7–15 days; custom production typically takes 20–40 days depending on specifications.
Q: Can you supply cut-to-size plates?
A: Yes, we offer customized cutting and machining services based on drawings or project requirements.
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