Are you in search of a trusted supplier for Nimonic 75 / GH3030 seamless tubes? Our precision-engineered tubing is specifically designed for demanding environments where exceptional resistance to thermal fatigue and oxidation is paramount, ensuring the utmost material integrity. Whether you are manufacturing combustion chamber liners for the aerospace sector or constructing high-temperature heat exchangers, our Nimonic 75 tubing provides the structural stability you require.
As an ISO-certified, premier exporter, Gnee Steel is dedicated to supplying custom-drawn Nimonic 75 tubing-offering worldwide delivery services and highly competitive wholesale pricing.
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Custom Nimonic 75 (Alloy 75 / GH3030) Seamless Tube Manufacturer
Custom Nimonic 75 (Alloy 75 / GH3030) Seamless Tube Manufacturer
Custom Nimonic 75 (Alloy 75, UNS N06075, GH3030) seamless tubing is a high-performance 80/20 nickel-chromium alloy, specifically engineered to deliver exceptional oxidation resistance and strength in high-temperature environments (up to 1100°C). This tubing is frequently customized for use in aircraft engines, furnace components, and heat-treating fixtures. Available custom specifications include KHN78T, XH78T, Nimonic 75, and GH3030 (such as 57x3mm high-temperature tubing); additionally, Nimonic 75 is available in various other forms, including rods and plates.
What is NIMONIC 75?
NIMONIC 75 is an 80/20 nickel-chromium alloy containing titanium and carbon as alloying additions. First introduced in the 1940s, this alloy was originally developed for the manufacture of turbine blades. It is readily machinable and weldable, and exhibits excellent corrosion resistance, mechanical properties, and heat resistance.
1. Nimonic 75 Tube, Pipe & Tubing Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS |
| Nimonic 75 | 2.4951 | N06075 |
| 2. Nimonic 75 Seamless Tube Chemical Composition Limits | ||||||||
| Weight% | Ni | Cr | Ti | C | Si | Cu | Fe | Mn |
| Alloy 75 Nimonic 75 |
Bal | 18.9 - 21.0 | 0.2 / 0.6 | 0.08 / 0.15 | 1.0 max | 0.5 max | 5.0 max | 1.0 max |
3. Physical Properties of Nimonic Alloy 75 Pipe
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.37 gm/cm3 | 0.302 lb/in3 |
4. ASTM B463 Nimonic 75 Tube, Pipe & Tubing Mechanical Properties:
| Grade Nimonic 75 |
Tensile strength(annealed) | Yield strength(annealed) | Elongation at Break | Modulus of Elasticity |
| Metric | 750 MPa | 275 MPa | 42% | 206 GPa |
| Imperial | 109 ksi | 40 ksi | 42% | 29878 ksi |
Click to Download the GH3030 Alloy PDF File Now
5. Nimonic 75 Seamless Tube Technical Specifications and Material Standards
| Specification | Details |
| Material Grades | Nimonic 75, Alloy 75, GH3030, UNS N06075, W.Nr. 2.4951 |
| Standards | ASTM B167, BS HR 403, GB/T 15062, AMS 5581 |
| Length | Standard 3m, 6m, or Precision Cut-to-Length services |
| Ends | Plain end, Beveled end, or Threaded |
6. Key Applications for Nimonic 75 / GH3030 Piping
Our Nimonic 75 / GH3030 piping is regarded as the "gold standard" across several high-tech industries:
Aerospace & Defense: Jet engine fuel manifolds, fuel lines, and afterburner guide vanes.
Heat Treatment Industry: Radiant tubes, thermocouple protection sheaths, and furnace muffles.
Nuclear Energy & Power Generation: High-temperature sensor protection tubes and heat exchanger tube bundles.
Chemical Processing: Catalyst supports and internal piping for high-temperature reactors.
Why Choose Gnee Steel?
At Gnee Steel, we understand that high-temperature projects leave no room for error. That is why we offer you:
✅️Direct-from-Manufacturer Pricing: Enabling significant cost savings for your large-scale procurement needs.
✅️Global Export Expertise: Providing seamless, hassle-free logistics services with door-to-door delivery.
✅️Comprehensive Compliance Assurance: Every shipment is accompanied by a Material Test Certificate (MTC) compliant with the EN 10204 3.1 standard.
Gnee Steel GH3030 Certificate
📦 Packaging and Shipping
All Nickel Based Alloy products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
Gnee Steel GH3030 Product Packing
Contact us for the latest export price quote for GH3030 Alloy
FAQ
Q1: What is the pressure rating for your Nimonic 75 seamless pipes?
A: The pressure rating depends on the OD, WT, and operating temperature. Since Nimonic 75 maintains high strength at 800°C, our tubes can handle significantly higher pressures than standard stainless steel in thermal environments. We provide Hydrostatic Pressure Testing reports for every order.
Q2: Can Nimonic 75 tubes be bent or flared without cracking?
A: Yes. Thanks to our controlled Bright Annealing process, our GH3030/Nimonic 75 tubes have excellent ductility (Elongation ≥ 35%). They are ideal for complex bending, flaring, and cold-forming operations common in aero-engine manifold manufacturing.
Q3: How do you ensure the internal surface is clean?
A: We use specialized degreasing and ultrasonic cleaning for every tube. For aerospace fuel lines, we perform internal endoscopic inspections to guarantee that no residues or oxides remain.
Q4: What is your typical lead time for custom-sized tubes?
A: We keep standard stock for immediate dispatch (7 days). For custom precision-drawn orders, our lead time typically ranges from 3 to 5 weeks, including full testing and certification.
