For engineering companies in Russia, Eastern Europe, and the Middle East, many long-standing, high-risk blueprints specify the use of Russian standard materials such as XH78T (EI435) or GH30. When these materials are difficult to source globally, a major pain point in procurement lies in compliance verification:
Can Chinese-made GH3030 reliably replace XH78T?
Does the material meet the chemical purity requirements of the original Soviet-era designs?
Will the change in material name affect the project's aerospace or nuclear energy certifications?
At Gnee Steel, we are dedicated to bridging this technological gap. GH3030 is specifically developed based on the Russian standard material XH78T (EI435). They are twin alloys, following the same metallurgical principles, ensuring industrial-grade durability even at extreme temperatures.
Click to get the latest export prices for GH3030 and XH78T (EI435)
The relationship between GH3030 and XH78T (EI435): Global Equivalence Guidelines
The relationship between GH3030 and XH78T (EI435): Global Equivalence Guidelines
GH3030 and XH78T (EI435) are essentially equivalent high-temperature nickel-based solid solution strengthened superalloys, both with a basic composition of 80Ni-20Cr. GH3030 is the grade designated in the Chinese National Standard (GB), while XH78T (often transliterated as KhN78T) and EI435 (ЭИ435) are grades designated in the Russian National Standard (GOST). They have similar properties and applications, primarily in the aerospace and chemical industries, and exhibit good oxidation resistance at temperatures up to 1100°C.
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 Equivalent Standard
To streamline your international sourcing process, we offer a detailed cross-reference table. Our GH3030 features a globally compatible design that meets the most stringent requirements of both traditional and modern designs.
| Region / Standard | Grade Designation | Technical Reference |
| China (GB) | GH3030 / GH30 | GB/T 14992, GB/T 15062 |
| Russia (GOST) | XH78T / EI435 (ЭИ435) | GOST 5632, GOST 24950 |
| USA / International | Alloy 75 / Nimonic 75 | UNS N06075, ASTM B168 |
| Europe (EN/DIN) | NiCr20Ti / W.Nr. 2.4951 | DIN 17750, EN 10095 |
2. Comparison of chemical composition (%) of GH3030 and XH78T
| Element | GH3030 (China) | XH78T / EI435 (Russia) | Role in the Alloy |
| Nickel (Ni) | Balance (~75%) | Balance (~75%) | The base for thermal stability. |
| Chromium (Cr) | 19.0 - 22.0 | 19.0 - 22.0 | Essential for oxidation resistance. |
| Titanium (Ti) | 0.15 - 0.35 | 0.15 - 0.35 | Grain stabilizer & strengthener. |
| Iron (Fe) | ≤ 1.50 | ≤ 1.00 | Controlled matrix impurity. |
| Carbon (C) | ≤ 0.12 | ≤ 0.12 | Regulates grain size. |
3.Mechanical properties of GH3030 and XH78T at 800°C (1472°F)
| Value | |
|---|---|
| Tensile Strength (σb) | ≥ 140 MPa |
| Yield Strength (σp0.2) | ≥ 100 MPa |
| Elongation (δ5) | ≥ 50% |
Click to download the GH3030 alloy PDF file now
4. Common Applications of GH3030
Due to the similar properties of the two materials, they can both be used in:
Turbine engine combustion chambers and afterburners.
High-temperature components requiring oxidation resistance but with relatively low loads.
Industrial furnace components and welded parts.
5. Why choose to partner with Gnee Steel, which has globally equivalent certifications?
As a Tier-1 Manufacturer, we solve the complexity of international standard compliance:
✅️Russian Blueprint Expertise: Our technical team is experienced in interpreting original GOST drawings and ensuring material compliance for specialized equipment.
✅️Premium Melting (VIM + ESR): We ensure ultra-low Phosphorus and Sulfur (P, S < 0.010%), which often exceeds the purity requirements of original XH78T specifications.
✅️100% Traceability: Every order comes with a complete EN 10204 3.1 Mill Test Certificate (MTC) documenting the metallurgical pedigree.
✅️Wholesale Inventory: Large stock of XH78T/GH3030 in Seamless Pipe, Sheet, and Bar forms for Fast Global Shipping.
Gnee Steel GH3030(XH78T) 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 be used for aero-engine repairs originally calling for EI435?
A: Yes. GH3030 is the direct technical descendant of EI435. For aerospace maintenance (MRO), we provide certified materials that meet the original chemical heat analysis and mechanical property thresholds.
Q2: Is GH3030 also equivalent to Nimonic 75?
A: Yes. While EI435 is the Russian designation, Nimonic 75 is the UK/US equivalent. All three alloys are chemically and thermally interchangeable for most industrial heating applications.
Q3: How do you protect the material during transit to Russia or the Middle East?
A: We use specialized export-standard seaworthy packaging, including reinforced wooden cases and waterproof wrapping, ensuring your Aviation Grade material arrives in zero-defect condition.
Q4: Do you offer bulk discounts for petrochemical refinery projects?
A: Absolutely. As a direct manufacturer, we offer tiered Wholesale Pricing and long-term supply contracts for large-scale energy infrastructure programs.
