GH3128 (GH128) Nickel-Based Alloy

GH3128 (also designated GH128) is a Chinese solid-solution strengthened nickel-based alloy with high molybdenum and tungsten additions. It offers high ductility, high creep-rupture strength, good oxidation resistance and excellent stamping and welding performance, and is generally considered to have better overall properties than GH3044 and GH3536 among similar Ni-base solid-solution alloys.

Overview

• Material designation: GH3128 (GH128)
• Type: Solid-solution strengthened nickel-based alloy
• Standards: To be confirmed (not specified on source page)
• Service temperature: To be confirmed
• Available forms: Wire, bar, strip, plate, sheet, tube, forgings

Chemical Composition (wt%)

Note: iron content is not stated on the source page; please confirm against your mill certificate.

Physical Properties

Key Features

• High ductility and high creep-rupture strength;
• Good oxidation resistance;
• Excellent stamping and welding performance;
• Overall properties superior to GH3044 and GH3536 among similar Ni-base solid-solution alloys.

Heat Treatment

• Delivery condition: solution treatment at 1140–1180 °C, air cool;
• A supplementary solution treatment at 1200 °C is used when testing elevated-temperature properties.

Melting Process

• Non-vacuum or vacuum induction melting + electroslag remelting (ESR).

Typical Applications

• Aero-engine combustor flame tubes, afterburner casings and adjusting flaps;
• Gas-turbine combustor structural components;
• Turbine-engine combustor and afterburner parts.

For detailed datasheets, mill certificates or inquiries on specific sizes and tolerances, please contact our sales & engineering team.