Are you facing supply chain disruptions or the high costs of procuring XH78T (ХН78Т) or EI435 (ЭИ435) sheet metal for aerospace engine maintenance? In the aerospace MRO sector, finding certified XH78T alternatives that meet the stringent requirements of Soviet-designed engines is crucial for flight safety and operational efficiency.
Gnee Steel, a leading MRO supplier in China, offers high-purity GH3030 aerospace-grade sheet metal, meticulously designed to directly replace XH78T at a 1:1 ratio. Leveraging our global transportation network and expertise in international standards, we ensure your maintenance facilities have timely access to the high-quality materials they need when required.
Check XH78T (ХН78Т) Equivalence Report & Pricing
GH3030 vs XH78T: Equivalent Products Meeting Russian Aero Engine Standards
GH3030 vs XH78T: Equivalent Products Meeting Russian Aero Engine Standards
GH3030 and XH78T (also known as KhN78T or ЭИ435) are considered equivalent solid solution strengthened high-temperature nickel-chromium alloys. They both have excellent oxidation resistance and high thermal stability, and typically operate in similar high-temperature environments below 800°C–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 Equivalent Products
GH3030 (China): A nickel-based superalloy (approximately 80% nickel, 20% chromium) with excellent cold stamping properties, weldability, and stability after solution treatment.
XH78T/KhN78T (Russia/GOST): Also known as EI435, it is a Russian aerospace-grade nickel-chromium alloy conforming to GOST 5632-72 standards.
Equivalence: These two alloys are often considered equivalent in technical literature and are interchangeable in components such as combustion chambers and afterburners.
Click to learn about the equivalent information of GH3030 and XH78T
2. Technical Comparison: GH3030 vs. XH78T (ХН78Т)
Chemical Composition (Weight %) - High Purity Matrix
| Element | GH3030 (China) | XH78T / ХН78Т (Russia) |
| Nickel (Ni) | Balance (~80.0%) | Balance (~75-78%) |
| Chromium (Cr) | 19.0 - 22.0% | 17.0 - 20.0% |
| Titanium (Ti) | 0.15 - 0.35% | 0.20 - 0.50% |
| Aluminum (Al) | ≤ 0.15% | ≤ 0.15% |
| Iron (Fe) | ≤ 1.5% | ≤ 2.0% |
Both alloys are solid-solution strengthened and rely on a high-nickel base to provide High Plasticity and exceptional Oxidation Resistance up to 800°C.
Mechanical Properties (at Room Temperature)
| Property | GH3030 Aerospace Sheet | XH78T / ХН78Т Sheet |
| Tensile Strength (σbσb) | ≥ 735 MPa | ≥ 690 MPa |
| Yield Strength (σ0.2σ0.2) | ≥ 245 MPa | ≥ 250 MPa |
| Elongation (δ5δ5) | ≥ 35% | ≥ 35% |
| Forming Ability | Exceptional (Cold/Hot) | Exceptional |
Click to download the GH3030 alloy PDF file now
3. Aerospace-Grade Manufacturing and Surface Quality
As a direct manufacturer, Gnee Steel controls the entire production process to ensure our sheet metal meets MRO (Maintenance, Repair, and Overhaul) requirements:
Vacuum Induction Melting + Electroslag Remelting: Each sheet is vacuum induction melted followed by electroslag remelting. This ensures ultra-low gas content (O, N, H), meeting aerospace safety requirements.
VIM+ESR Process
Precision Dimensions:
Cold-rolled sheet: 0.5mm to 4.0mm (tolerance within ±0.05mm).
Hot-rolled sheet: 5mm to 50.0mm (for structural MRO components).
Superior Surface Properties: We offer a bright annealing (BA) finish for our cold-rolled sheet, giving it a mirror-smooth, oxide-free surface that effectively prevents carbon buildup during engine operation.
Bright Annealing (BA) Finish Plate
4. Why Choose Gnee Steel?
As your supply chain partner, Gnee Steel provides cost-effective solutions for the international MRO market:
MRO Supplier Expertise: We maintain a large inventory of commonly used XH78T equivalent sizes to handle emergency AOG (Aircraft Grounding) situations.
Factory Wholesale Prices: Eliminate the high markups of international trading companies. Purchase directly from the factory at factory prices.
Global Shipping and Documentation: We handle all export documentation, providing English versions of material testing certificates (EN 10204 3.1) with clear GOST cross-references.
GH3030 Plate Certificates
Contact us now to get the latest export price for GH3030 in 2026
Contact us for a quote on high-performance GH3030 tubing!
Stop paying exorbitant prices for Western brands. We can offer you the same aerospace-grade GH3030 superalloy tubing at a lower price. Our team is ready to provide you with a rapid quote (RFQ) within 12 hours.
Email: [ru@gneesteelgroup.com]
WhatsApp/WeChat: +86 15824687445
Website: [https://www.china-plate-steel.com/]
FAQ
Q1: Can GH3030 truly replace XH78T (ХН78Т) in older Russian engines?
A: Yes. GH3030 was specifically developed based on the same metallurgical principles as XH78T (ХН78Т) and EI435. It is a 100% Reliable Replacement for combustion liners, afterburner components, and exhaust ducting.
Q2: Do you provide documentation that Russian quality inspectors will accept?
A: Every shipment is accompanied by a full Material Certification detailing the heat analysis and mechanical test results. We ensure all data meets or exceeds the requirements stipulated in GOST 5632.
Q3: What is the typical lead time for Global Shipping to the CIS region?
A: For stocked items, we can ship within 3-7 days. For custom rolling orders, the lead time is typically 20-30 days, which is often significantly faster than sourcing original GOST material.
Q4: How do you ensure the sheets are protected during long-distance transit?
A: Every sheet is coated with anti-rust oil, separated by paper, and packed in reinforced, seaworthy wooden crates to ensure it arrives at your maintenance base in Premium Quality condition.
