High-Temperature Alloys / Superalloys

GH3039 (ЭИ602) (UNS —) — Composition, Properties & Supply

GH3039 is a Ni-Cr solid-solution nickel superalloy with good oxidation resistance and hot strength below 800 °C. Easy to hot/cold work and weld, it is a widely used Chinese grade for aero-engine combustors, flame tubes and chemical high-temperature parts.

Request a Quote EN 10204 3.1 Certificate

What is the chemical composition of GH3039 (ЭИ602)?

GH3039 (ЭИ602) chemical composition, typical specification limits
Element	Symbol	Content (wt%)
Ni	Ni	Balance
Cr	Cr	19.0–22.0
Mo	Mo	1.80–2.30
Al	Al	0.35–0.75
Ti	Ti	0.35–0.75
Nb	Nb	0.90–1.30
Fe	Fe	≤ 3.0
C	C	≤ 0.08

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 GH3039 (ЭИ602)?

GH3039 (ЭИ602) typical mechanical properties
Property	Value	Note
Tensile strength	≥ 735 MPa	Room temperature
Yield strength (0.2% offset)	≥ 345 MPa	Room temperature
Elongation	≥ 30 %	Gauge length 50 mm / 4D
Hardness	≤ 200 HB	Brinell / Rockwell

What are the physical properties of GH3039 (ЭИ602)?

GH3039 (ЭИ602) physical properties
Property	Value
Density	8.30 g/cm³
Melting range	1330–1380 °C
Thermal conductivity	21.8 W/m·K
Elastic modulus	205 GPa
Maximum service temperature	800 °C

What are the key characteristics of GH3039 (ЭИ602)?

Oxidation resistant to about 800 °C
Solid-solution strengthened, stable structure
Excellent weldability with matching filler
Good hot and cold formability for sheet stampings

Where is GH3039 (ЭИ602) used?

Aero-engine combustors and flame tubes
Afterburners and exhaust nozzle parts
Heat-treatment furnaces and chemical high-temperature parts
Gas turbine hot sheet components

Which standards and specifications cover GH3039 (ЭИ602)?

What product forms are available?

Round BarsGH3039 (ЭИ602) supplied to specification with full traceability. Plates & SheetsGH3039 (ЭИ602) supplied to specification with full traceability. Seamless Tubes & PipesGH3039 (ЭИ602) supplied to specification with full traceability. Precision StripsGH3039 (ЭИ602) supplied to specification with full traceability. Welding Wire & CoilsGH3039 (ЭИ602) 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 GH3039 use?

GH3039 is normally solution treated at 1050–1080 °C and air or water cooled. It is solid-solution strengthened and cannot be age hardened — properties are adjusted by solution treatment and cold work.

Need GH3039 (ЭИ602) 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.

Request a Quote Chat on WhatsApp +86-156-1827-9078