Introduction

GH4033(GH33) is a high-temperature alloy, nickel-chromium as the matrix, adding aluminum, titanium to form γ, phase dispersion strengthening alloy, at 700~ 750 ℃ with sufficient high-temperature strength, below 900 ℃ has good oxidation resistance. GH4033 round bar, forging, wire, spring wire, and fastener are widely used in turbine blades, gas turbine bolts, aero engine fasteners, exhaust valves, and diesel engine valves. This age‑hardening alloy offers good creep resistance, oxidation resistance, and high tensile strength for jet engine components. GH4033 sheet, plate, and strip are also available for rings and seals. Supplied per GB/T 14992 or to customer specifications.

Chemical components（%）

Mechanical properties

Physical properties

GH4033 Superalloy Available Products and Standard

1. GB/T 14992 (Superalloys – Classification and Specifications)

Grade: GH4033 / GH33

Type: Round Bar / Sheet / Plate / Strip / Wire / Forgings

Size Range:

• GH4033 Wire: 0.1 – 15.0 mm dia

• GH4033 Strip: 0.05 – 5.0 mm thick × 5 – 500 mm wide

• GH4033 Round Bar: 8 – 355 mm dia

• GH4033 Sheet / Plate: 0.5 – 180 mm thick

Surface: Annealed, Bright, Pickled, Ground

Testing: Chemical analysis, mechanical test (tensile strength, yield strength, elongation), hardness test, high-temperature stress rupture test, age hardening response test, dimensional inspection

2. ASTM B637 (Standard Specification for Precipitation Hardening Nickel Alloy Bar, Rod, Wire, and Forgings)

Grade: UNS N07080 / GH4033 / Nimonic 80A equivalent

Type: Round Bar / Rod / Wire / Forging / Ring

Size Range:

• GH4033 Round Bar: 8 – 355 mm dia (hot rolled or cold drawn)

• GH4033 Wire: 0.1 – 15.0 mm dia (coils or straight)

• GH4033 Forging / Ring: Custom sizes available

Surface: Annealed, Pickled, Ground, Turned, Bright

Testing: Chemical analysis, mechanical test (tensile, yield, elongation), hardness test, age hardening test, stress rupture test, ultrasonic test, dimensional inspection

Advantages

(1)High temperature strength up to 700°C: GH4033 round bar and forging maintain excellent tensile and creep strength for turbine blades and gas turbine bolts.

(2)Good oxidation resistance: GH4033 sheet and plate resist surface degradation at elevated temperatures, suitable for jet engine exhaust valves and rings.

(3)Age‑hardenable: As a precipitation hardening nickel‑chromium superalloy, GH4033 achieves high strength through heat treatment, comparable to Nimonic 80A.

(4)Good fatigue life: GH4033 spring wire and fastener offer reliable cyclic performance in aero engine bolts, nuts, and springs.

(5)Proven for rotating and static parts: GH4033 wire and strip are widely specified for diesel engine valves, pump shafts, and high‑temperature seals.

Applications

(1)Turbine blades and gas turbine components – GH4033 forging and round bar are used for turbine blades, turbine discs, and nozzle guide vanes in aero engines and industrial gas turbines.

(2)High temperature fasteners – GH4033 bolt, nut, and fastener provide secure clamping at temperatures up to 700°C in jet engine casings and exhaust systems.

(3)Engine valves – GH4033 round bar and wire are specified for exhaust valves in aircraft piston engines and high‑performance diesel engines.

(4)Springs and seals – GH4033 spring wire and strip are used for retaining rings, seal rings, and coil springs in high‑temperature environments.

(5)Pump shafts and rotating hardware – GH4033 bar stock and forging serve in oil & gas pumps and auxiliary power unit (APU) components.

MONO Group is one of Superalloy, Nickel alloy, high Temperature alloy manufacturer&Supplier&Wholesaler from China,We can supply high quality alloy plate,sheet,round bar,tube.pipes,fittings,flange,and custom parts in accordance with ASTM, ASME, DIN, ISO, GB, and other international standards. For inquiries or to request a quote , please freely contact us at info@monokj.com.