Gh2903 / Incoloy 903 (US) / Fe-Ni-Co-Based Precipitation Hardening Deformed Superalloy / Gh903 /

• Application: Industrial
• Standard: GB, ASTM
• Purity: >99.5%
• Alloy: Alloy
• Powder: Not Powder
• Transport Package: Wooden
• Model NO.: XD-238
• Origin: Jiangsu Baoying
• HS Code: 7505120000
• Production Capacity: 500ton/Year

Product Description

1. Name

GH2903 (GH903), also known as Incoloy 903 (US)

2. Overview

GH2903 is Fe-Ni-Co-based precipitation hardening deformed superalloy, which is characterized by low thermal expansion coefficient and stable elastic modulus in a wide temperature range, and the operating temperature is below 650. The alloy has high strength, excellent resistance to cold and heat, welding performance, and resistance to high-pressure hydrogen embrittlement. GH2903 alloy is an ideal material for realizing engine clearance control technology, which can improve engine efficiency and reduce fuel consumption. It is suitable for the manufacture of turbine casings, sealing rings and other components of aviation and aerospace engines.

3. Types and application status

Hot rolled, forged bars, ring blanks and rings of all sizes

4. Chemical composition

C:≤0.05

Mn: ≤0.20

Si: ≤0.20

P:≤0.015

S:≤0.015

B: 0.005-0.010

Nb: 2.70-3.50

Ti: 1.35-1.75

Fe: surplus

Al: 0.70-1.15

Co: 14.00-17.00

Ni: 36.00-39.00

5. Physical and chemical functions

1. Density g/cm: 8.23

2. Melting temperature: 1318-1393ºC

3. Anti-yangization and anti-corrosion function

6. Processing function and welding process

GH2903 has excellent process plasticity within 900-1100. GH2903 has satisfactory welding function and can be welded in a variety of ways.

7. Scope of application and usefulness

Because the GH2903 alloy does not contain chromium, a protective coating is used at higher temperatures. GH2903 has the tendency of stress to accelerate the oxidative embrittlement of grain boundary, which leads to the decrease of high temperature notch durability. GH2903 is used to make components such as turbine casing, turbine outer ring, guide inner and outer ring and sealing ring of aviation and aerospace engines, and is widely used in precision electronic instruments, meters and other fields.

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