GB/T	UNS	Trademark	W.Nr
GH4169	N07718	Inconel718	2.4668

chemical composition:

alloy	%	Ni	Cr	Fe	Mo	Nb	C	Mn	Si	S	Cu	Al	Ti	N
GH4169	min	50	17	margin	2.8	4.75						0.20	0.65
GH4169	max	55	21	margin	3.3	5.50	0.08	0.35	0.35	0.015	0.30	0.80	1.15	0.006

Physical properties

density	8.24 g/cm3
Melting point	1260-1320 ℃

The minimum mechanical properties of the alloy at room temperature:

alloy	Tensile Strength Rm N/mm²	Yield Strength Rp0.2 N/mm²	ElongatSion A5 %	Brinell hardness HB
Solution treatment	965	550	30	≤363

GH4169 alloy has the following characteristics:

1. Easy processing

2. High tensile strength, fatigue strength, creep strength and breaking strength at 700 °C

3. High oxidation resistance at 1000 ° C

4. Stable chemical properties at low temperatures

5. Good welding performance

Metallographic structure of GH4169:

GH4169 alloy has an austenitic structure, and the γ" phase formed by precipitation hardening has excellent mechanical properties. The δ phase formed at the grain boundary during heat treatment makes it have the best plasticity.

Corrosion resistance of GH4169:

GH4169 alloy has excellent resistance to stress corrosion cracking and pitting, whether in high temperature or low temperature environments. GH4169 alloy is particularly excellent in oxidation resistance at high temperatures.

The application areas of the GH4169 application range are:

Due to its high temperature strength at 700 ° C, excellent corrosion resistance and ease of processing, the GH4169 can be used in a wide range of demanding applications.

Turbine

2. Liquid fuel rocket

3. Cryogenic engineering

4. Acidic environment

5. Nuclear engineering