With our aerospace-grade Nimonic 75 (UNS N06075) alloy sheets, you can process with complete confidence. These sheets are specifically designed for aero-engine combustor bushings, offering exceptional plasticity to meet complex deep drawing and multi-stage stamping requirements. As a leading high-temperature alloy supplier, Gnee Steel offers Nimonic 75 (technically equivalent to EI435/GH3030) with a stable microstructure, ensuring zero-defect forming and excellent weld stability, suitable for critical aerospace components.
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ASTM B637 Nimonic 75 (GH3030) Alloy Plate for Combustion Chamber Lining of Aero Engines
ASTM B637 Nimonic 75 (GH3030) Alloy Plate for Combustion Chamber Lining of Aero Engines
ASTM B637/GH3030 (Nimonic 75) is an 80/20 nickel-chromium alloy with controlled additions of titanium and carbon, designed for high-temperature applications requiring excellent oxidation resistance and moderate strength, such as combustion chamber liners.
What is NIMONIC 75 material?
NIMONIC 75 alloy is an 80/20 nickel-chromium alloy with added titanium and carbon. This alloy was originally introduced in the 1940s for the manufacture of turbine blades. It is easy to machine and weld, and possesses good corrosion resistance, mechanical properties, and heat resistance.
1. Nimonic 75 Key Chemical Components (%)
| Element | Composition | Function |
|---|---|---|
| Nickel (Ni) | Balance (≥ 75.0%) | Provides the ductile austenitic matrix |
| Chromium (Cr) | 19.0 - 22.0% | Ensures 800°C oxidation resistance |
| Titanium (Ti) | 0.15 - 0.35% | Refines the grain size for uniform stamping |
| Iron (Fe) | ≤ 1.50% | – |
| Carbon (C) | ≤ 0.12% | – |
2. Mechanical properties of Nimonic 75 alloy (annealed and formed)
| Property | Value | Why It Matters for You |
|---|---|---|
| Tensile Strength (Rm) | ≥ 685 MPa | High structural safety at 800°C |
| Yield Strength (Rp 0.2) | ≥ 275 MPa | Lower press force needed for forming |
| Elongation (A5) | ≥ 35% (Typical 40%+) | No cracking during deep drawing |
| Hardness (HBW) | ≤ 200 | Extends the life of your stamping dies |
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3. Advantages of Gnee Steel Nimonic 75 Alloy Sheets
Superior Deep Drawing Performance: Our sheets typically have an elongation exceeding 40%, allowing for deep drawing without localized necking or tearing.
Welding Stability: Nimonic 75 sheets have a single-phase structure, meaning they are less prone to "hot cracking" during TIG or MIG welding. They maintain a stable microstructure in the heat-affected zone (HAZ).
Surface Quality: Our Bright Annealing (BA) surface treatment provides a mirror-like smooth surface, reducing friction during stamping and improving the fatigue life of the final parts.
4. Nimonic 75 Plate Combustion Chamber Applications
Nimonic 75 (UNS N06075) plate is widely used in:
Combustion chambers/linings: Components for aircraft engines and gas turbines.
Industrial furnaces: Heat treatment equipment and hot working fixtures.
Nuclear engineering: High-temperature structural applications.
5.The Nimonic 75 is available in a wide range of sizes and precision dimensions
We offer a complete Nimonic 75 material supply ecosystem, allowing you to source all combustion chamber components from a single certified manufacturer.
| Product Form | Standard Supply Dimensions | Surface Finish Options |
| Cold Rolled Sheet | 0.5mm – 3.0mm (Aero Precision) | Bright Annealed (BA) / Pickled |
| Hot Rolled Plate | 4.0mm – 50.0mm (Structural) | Annealed & Pickled (AP) |
| Round Bar & Rod | Φ 6mm – Φ 250mm | h9 Precision Ground / Peeled |
| Seamless Tubing | OD 6mm – 114mm | Mirror BA / Industrial AP |
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FAQ
Q1: Does your sheet material meet the AMS 5536 or ASTM B168 standard?
A: Yes. While ASTM B637 is often cited for quality benchmarks, we strictly adhere to ASTM B168 for sheets and plates and AMS 5536 equivalents for aerospace specifications. Every batch comes with a full EN 10204 3.1 Mill Test Certificate (MTC).
Q2: Can I get custom-cut sizes to reduce material waste?
A: Absolutely. We offer precision laser and water-jet cutting for our Nimonic 75 plates. We can deliver "Near-Net-Shape" circles or complex profiles according to your CAD drawings, significantly lowering your procurement cost.
Q3: Is this material a direct replacement for Russian EI435 (ЭИ435)?
A: Yes. We are a specialized equivalent factory. Our Nimonic 75 / GH3030 is a 1:1 technical match for EI435, making it the premier choice for Aerospace MRO in regions using Russian-designed engines.