In aerospace engineering, there is no room for compromise. Whether manufacturing combustion chamber liners, exhaust pipes, or heat shields, the biggest pain point in the procurement process is compliance verification. Buyers need absolute certainty that materials meet international aerospace standards, such as BS HR5 or ASME SB168.
Inconsistent surface quality, internal micro-defects, or a lack of traceable thermal analysis can all lead to catastrophic component failure. Our aerospace-grade Nimonic 75 (GH3030) sheet metal from Gnee Steel is the preferred choice for aerospace engineering solutions worldwide, designed to eliminate these risks.
Click to download the aviation-grade certificate and datasheet
Certified supplier of aerospace-grade Nimonic 75 (GH3030) sheet metal
Certified supplier of aerospace-grade Nimonic 75 (GH3030) sheet metal
Multiple suppliers offer certified aerospace-grade Nimonic 75 (also known as UNS N06075 or GH3030 in Chinese standards) sheet metal, which is specially manufactured to meet stringent aerospace quality standards such as AS9120.
What is the yield strength of NIMONIC 75?
Yield strength: 152 MPa. Tensile strength: 286 MPa. Elongation: 75 %
1. Standards for GH3030 sheet
We understand that international projects typically refer to different engineering specifications. Our Nimonic 75 material undergoes special processing to meet or even exceed the most stringent global standards.
| Designation | Equivalent Grade | International Standards |
| Nimonic 75 | Original UK Grade | BS HR5, BS HR203, BS HR403 |
| GH3030 | Chinese Aerospace | GB/T 15062, GB/T 14992 |
| Alloy 75 | US Designation | ASTM B168, UNS N06075 |
| Werkstoff Nr. | European Standard | 2.4951, NiCr20Ti |
Certification: Every shipment comes with full MTC 3.1 traceability, detailing the complete chemical heat analysis and mechanical property verification.
2. Composition of Nimonic Alloy 75 Plate
The Nimonic 75 chemical composition is optimized for high-temperature strength, as per ASTM B637:
|
Element |
Ni |
Cr |
Fe |
Ti |
C |
Mn |
Si |
Cu |
Al |
|---|---|---|---|---|---|---|---|---|---|
|
% |
Bal. |
18.0-21.0 |
≤5.0 |
0.2-0.6 |
0.08-0.15 |
≤1.0 |
≤1.0 |
≤0.5 |
≤0.4 |
3. Mechanical Properties of Alloy 75 Plate
The mechanical properties of Alloy 75 ensure the reliability of Alloy 75 plates, Nimonic 75 plates, and round bars, conforming to ASTM B637 standard (solution annealed state):
|
Property |
Value at 20°C |
Value at 1200°F (649°C) |
Description |
|---|---|---|---|
|
Yield Strength |
275-350 MPa (40-51 ksi) |
~200 MPa (29 ksi) |
High strength for high-temperature applications |
|
Tensile Strength |
650-800 MPa (94-116 ksi) |
~500 MPa (73 ksi) |
Ensures durability under thermal stress |
|
Elongation |
~40% |
~50% |
High ductility for fabrication |
|
Hardness |
~80 HRB |
- |
Supports wear resistance |
Click to download the GH3030 alloy PDF file now
4. GH3030 Superalloy standard thickness and surface finish
We offer Fast Global Shipping on our high-performance aviation sheets, with a focus on standard thicknesses required for sheet metal fabrication.
| Thickness Range | Width | Length | Surface Finish |
| 0.5mm - 3.0mm | 600mm - 1000mm | 1000mm - 3000mm | Bright Annealed / Pickled |
| 3.0mm - 6.0mm | Up to 1200mm | Up to 4000mm | No.1 / Sandblasted |
Surface Roughness: We guarantee a roughness of Ra ≤ 0.8μm for our bright annealed sheets, providing the optimal surface for high-temp bonding and thermal coatings.
Request an Instant Quote for Aviation Grade Sheets
Why Source From a Certified Aerospace Supplier?
✅️Tier-1 Supplier Status: Join our network of global aerospace partners who rely on our consistent material quality.
✅️Solution Annealed State: All aviation sheets are supplied in the solution-treated condition for maximum ductility and fabricability.
✅️Global Logistics Support: We are experienced in handling the complex documentation and specialized packaging required for international aerospace shipments.
✅️Wholesale Pricing: Benefit from Direct Factory Price on premium-grade nickel alloy sheets.
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
Contact us for the latest export price quote for GH3030 Alloy
FAQ
Q1: Does your material strictly comply with the BS HR5 standard?
A: Yes. Our Aviation Grade Nimonic 75 is manufactured and tested according to BS HR5 (and its equivalents like ASTM B168). All chemical heat analysis and mechanical test values are clearly documented on our MTC 3.1.
Q2: What is the benefit of the Ra ≤ 0.8μm surface finish?
A: A smooth surface finish (Ra ≤ 0.8μm) is critical for aerospace components. It reduces localized stress concentration and provides a superior base for Thermal Barrier Coatings (TBC), which are common in flame tube applications.
Q3: Can you provide MTC 3.2 certification if required?
A: Absolutely. While MTC 3.1 is standard, we can coordinate with Third-Party Inspection agencies (such as SGS or TUV) to provide MTC 3.2 certification for nuclear or high-stakes aerospace projects.
Q4: Do you offer cut-to-size blanks?
A: Yes. We offer precision laser cutting and waterjet cutting to provide ready-to-use blanks, reducing your lead time and material waste during fabrication.
