For engineering companies in the Middle East and Eastern Europe, many long-standing, high-risk blueprints still use Russian standards such as XH78T (ЭИ435) or GH30. When these materials are difficult to procure, a major pain point lies in cross-standard verification:
Can GH3030 reliably replace XH78T?
Does the material meet the chemical purity requirements of the original Soviet-era designs?
Will changing standards affect project certification?
At Gnee Steel, we are dedicated to solving this problem. With 18 years of experience in global equivalent grades, we supply GH3030 nickel alloy plates that are fully interchangeable with XH78T and Nimonic 75, ensuring consistent industrial durability.
Contact our experts for level verification and a free quote
Equivalent grades of GH3030, GH30, and XH78T nickel alloy plates
Equivalent grades of GH3030, GH30, and XH78T nickel alloy plates
GH3030, GH30 and XH78T plates (also known as KhN78T or EI435 in Russia) are nickel-based solid solution strengthened high-temperature alloy steels with essentially the same or similar properties, and are commonly used to manufacture heat-resistant plates.
What is GH3030 material?
GH3030 is a high-temperature nickel-based superalloy primarily used in components requiring high oxidation resistance and thermal stability. Due to its excellent performance in high-temperature environments, GH3030 is widely used in the aerospace and power generation industries.
1. GH3030 Global Equivalence Classification Table
| Region / Standard | Grade Designation | Standard Reference |
| China (GB) | GH3030 / GH30 | GB/T 14992, GB/T 15062 |
| Russia (GOST) | XH78T / EI435 (ЭИ435) | GOST 5632, GOST 24950 |
| Europe (EN/DIN) | NiCr20Ti / W.Nr. 2.4951 | DIN 17750, EN 10095 |
| USA / International | Alloy 75 / Nimonic 75 | UNS N06075, ASTM B168 |
2. Technical Specifications: GH3030 vs XH78T
Our GH3030 is produced via VIM + ESR (Vacuum Induction Melting + Electroslag Remelting), ensuring the material purity often exceeds the requirements of original GOST standards.
Comparison of chemical composition (%) between GH3030 and XH78T
| Element | GH3030 (Standard) | XH78T / EI435 (Standard) |
| Nickel (Ni) | Balance | Balance |
| Chromium (Cr) | 19.0 - 22.0 | 19.0 - 22.0 |
| Titanium (Ti) | 0.15 - 0.35 | 0.15 - 0.35 |
| Iron (Fe) | ≤ 1.50 | ≤ 1.00 |
| Carbon (C) | ≤ 0.12 | ≤ 0.12 |
Click to download the GH3030 alloy PDF file now
Typical mechanical properties of GH3030 and XH78T (at 800℃)
| Property | Value |
|---|---|
| Tensile Strength (σb) | ≥ 140 MPa |
| Yield Strength (σp0.2) | ≥ 100 MPa |
| Elongation (δ5) | ≥ 50% |
| Thermal Stability | Excellent oxidation resistance up to 800°C – 900°C |
3. GH3030/XH78T Grade Introduction
GH3030/GH30: A Chinese standard 80Ni-20Cr solid solution strengthened high-temperature alloy (nickel content approximately 75-78%, chromium content approximately 19-22%), used for components operating below 800°C, and maintaining good oxidation resistance at temperatures up to 1100°C.
XH78T (KhN78T): The alloy corresponding to GH3030 in the Russian GOST standard. It is often referred to as EI435 (ЭИ435). It is used for similar applications, such as flame tubes, combustion chambers, and turbine components.
Properties: All three alloys exhibit excellent oxidation resistance, thermal fatigue resistance, and good stamping and welding properties.
Click to view Gnee Steel GH3030 inventory list
4. Alternative International Grades
While not all trace element compositions are identical, the following grades are generally listed as alternatives to GH3030/XH78T, offering similar high-temperature oxidation resistance:
Inconel 600 / 601: Nickel-chromium-iron alloy for extreme high-temperature environments.
Nimonic 75: A similarly composed nickel-chromium alloy suitable for high-temperature environments.
5. GH3030/XH78T Steel Plate Applications
Our GH3030/XH78T steel plates are a mainstay in high-temperature engineering, widely used in:
Aero-engine combustion chambers: heat shields and linings.
Industrial furnaces: rollers, radiant tubes, and conveyor belts.
Chemical reactors: internal components exposed to high-temperature corrosive gases.
Nuclear power plants: core structure piping and supports.
6. Why choose Gnee Steel's GH3030?
As a Tier 1 supplier and global exporter, Gnee Steel possesses unique business advantages:
✅️Russian Blueprint Expertise: Our technical team is experienced in interpreting original Soviet-era drawings and ensuring material compliance for specialized equipment.
✅️Certified Quality: Fully compliant with AS9100 and ISO 9001 aerospace standards. We provide 100% UT (Ultrasonic Testing) and dimensional inspection.
✅️Wholesale Pricing: Benefit from Direct Factory Price on high-temp sheets and plates, with no middleman markups.
✅️Traceability: Every batch comes with a complete EN 10204 3.1 Mill Test Certificate (MTC).
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: Can GH3030 fully replace XH78T in high-precision aerospace parts?
A: Yes. GH3030 was developed specifically based on the Russian XH78T specification. They share identical metallurgical principles. Our VIM+ESR refining ensures our material meets the strictest requirements of original aviation blueprints.
Q2: Is XH78T (GH3030) available in seamless tubes and pipes?
A: Absolutely. While this page focuses on plates, we maintain a large Wholesale Inventory of XH78T/GH3030 in both Seamless Pipe and Sheet forms, ready for Fast Global Shipping.
Q3: How do you handle export documentation for Middle Eastern or Eastern European projects?
A: We provide comprehensive global logistics support, including COO (Certificate of Origin), specialized export packaging, and third-party inspection reports (SGS/TUV) to ensure smooth customs clearance.
Q4: Can you provide custom laser cutting for XH78T plates?
A: Yes. We offer Custom Fabrication services, providing precision-cut blanks based on your technical drawings, reducing your material waste and fabrication time.
