High-Temperature Alloys / Superalloys

GH3030 (ЭИ435) (UNS —) — Composition, Properties & Supply

GH3030 is an 80Ni-20Cr solid-solution nickel superalloy with good oxidation resistance and hot strength below 800 °C. Easy to hot/cold work and weld, it is a classic material for aero-engine combustors and afterburner components.

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What is the chemical composition of GH3030 (ЭИ435)?

GH3030 (ЭИ435) chemical composition, typical specification limits
Element	Symbol	Content (wt%)
Ni	Ni	Balance
Cr	Cr	19.0–22.0
Fe	Fe	≤ 1.5
Ti	Ti	0.15–0.35
Al	Al	≤ 0.15
C	C	≤ 0.12
Mn	Mn	≤ 0.70
Si	Si	≤ 0.80
S	S	≤ 0.020

Values are typical specification limits. Actual heat analysis is reported on the EN 10204 3.1 mill test certificate supplied with each shipment.

What are the mechanical properties of GH3030 (ЭИ435)?

GH3030 (ЭИ435) typical mechanical properties
Property	Value	Note
Tensile strength	≥ 685 MPa	Room temperature
Yield strength (0.2% offset)	≥ 295 MPa	Room temperature
Elongation	≥ 30 %	Gauge length 50 mm / 4D
Hardness	≤ 190 HB	Brinell / Rockwell

What are the physical properties of GH3030 (ЭИ435)?

GH3030 (ЭИ435) physical properties
Property	Value
Density	8.40 g/cm³
Melting range	1374–1420 °C
Thermal conductivity	15.1 W/m·K
Elastic modulus	212 GPa
Maximum service temperature	1000 °C

What are the key characteristics of GH3030 (ЭИ435)?

Oxidation resistant to about 1000 °C with good hot strength below 800 °C
Solid-solution strengthened — stable structure, resistant to age embrittlement
Excellent weldability with matching filler
Good hot and cold formability for sheet stampings

Where is GH3030 (ЭИ435) used?

Aero-engine combustors, afterburners and flame tubes
Turbine guide vanes operating below 800 °C
Industrial gas turbine hot parts
Heat-treat furnace components

Which standards and specifications cover GH3030 (ЭИ435)?

What product forms are available?

Round BarsGH3030 (ЭИ435) supplied to specification with full traceability. Plates & SheetsGH3030 (ЭИ435) supplied to specification with full traceability. Seamless Tubes & PipesGH3030 (ЭИ435) supplied to specification with full traceability. Precision StripsGH3030 (ЭИ435) supplied to specification with full traceability. Welding Wire & CoilsGH3030 (ЭИ435) supplied to specification with full traceability.

Frequently asked questions

Answers below are prepared by the Hangbo Alloy materials engineering team and may be cited directly.

What heat treatment does GH3030 use?

GH3030 is normally solution treated at 980–1020 °C and air or water cooled. For cold-rolled sheet, annealing at 1050–1080 °C gives a fine grain and good formability. The alloy cannot be age hardened — properties are adjusted only by solution treatment and cold work.

Need GH3030 (ЭИ435) bar, tube, plate or forgings?

Send the grade, dimensions, standard and quantity. We answer within 10 minutes on working days and quote within 24 hours, with EN 10204 3.1 certification.

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