GH4145 Strip

GH4145 specification

GH4145 is an aging-strengthened high-temperature-resistant and corrosion-resistant nickel-chromium alloy

It has good corrosion resistance and oxidation resistance below 980°C, high strength below 800°C, good relaxation resistance below 540°C, and good formability and welding performance. Excellent mechanical properties.

 

Similar Grades

USA: Inconel X-750, UNS N07750

Germany: W.Nr.2.4669

France: NC15TNbA

 

Typical values(Weight %)

Cr	Ni+Co	Al	Ti	C	Mn	P	S	Fe
14.0- 17.0	≥70.0	0.40-1.00	2.25-2.75	≤0.08	≤1.00	≤0.015	≤0.01	5.0- 9.0

 

Mechanical Properties (Room Temperature)

Variety	σЬ， , MPa	σ0..2 ,MPa	δ5 (%)
Strip	≤930	-	≥18

 

Physical Data

Temperature℃	Thermal conductivity W/mk	Linear expansion coefficient 10-6/K
50	14.7
100	15.9
200		13.1
300	20.1	13.5
400	23.4	14.1
500	25.1	14.4
600		15.0
700	31.5	15.6
800		16.2
900	37.3

 

Formability

1. The temperature range of thermal processing is 980-1200℃, and the cooling method can be water quenching or rapid air cooling;

2.The heating temperature of steel ingot forging can be 1200°C. In order to obtain good structure and properties of the final forging or bar, the subsequent forging heating temperature should be carried out at a correspondingly lower temperature. The final forging temperature should not be lower than 950°C. The alloy should be solution treated after the severe forming process.

 

Application field

● Ring parts, structural parts and bolts of aero-engines, etc.

● Nuclear reactor

● Gas turbine blades, grinding wheels

● Flat springs and coil springs that require relaxation resistance

● Sensors

● Hot air ductwork

● Pressure vessel

● Aircraft structural parts

 

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