Lork Custom Gh1140 - GB /T 15062-2008 Special Alloy Tube Gh1140 Super Alloy Pipe

Product Description

Product Description

 

Introduction

LORK is a alloy manufacturer with 20 years of manufacturing experience.
 

GH4720Li superalloy (Udimet 720Li in the United States) is a Ni-Cr-Co based deformation superalloy strengthened by precipitation of face-centered cubic γ′-Ni3(Al, Ti) phase. It has high strength, fatigue resistance and creep resistance, good corrosion resistance, oxidation resistance and long-term structural stability between 650~750ºC[1-2]. Therefore, GH4720Li superalloy is mainly used to manufacture high-performance forged turbine disks for aircraft engines used below 750ºC, and can also be used in new generation strategic missiles. The United States has used this superalloy as a high-performance turbine disk material in advanced aircraft engines such as BR700, EJ200, AE2100, AE3007, T406 and T800[3]. my country began to develop GH4720Li superalloy in 2002. In-depth research has been conducted on the process, structure and performance of this alloy, and it has been applied to more than ten types of advanced aircraft engines.

China GH Series GH4720Li Applications
 

GH4720Li alloy is suitable for engine integral turbines, discs, ground gas turbine turbines, discs and other parts working below 750 degrees Celsius.
▪ Aviation and aerospace engines

 

China GH Series GH4720Li Chemical Composition

Element	Content (%)
Cr	15.5~16.5
Al	2.25~2.75
Ti	4.75~5.25
Co	14.0~15.5
Mo	2.75~3.25
W	1.00~1.50
B	0.01~0.02
C	0.01~0.02
Ni	mar

 

China GH Series GH4720Li Mechanical Properties
 

product	Test temperature	Tensile strength Mpa	Yield pointσs  Mpa	Elongation after fracture or elongation %	Sectional shrinkage %
Disc forgings	Room temperature	≥1530	≥1100	≥9	≥10
Disc forgings	650°C	≥1350	≥1025	≥10	≥10
Sample	680°C	High temperature endurance performance: stress 830MPa, creep rupture time ≥30h		Creep elongation after fracture: ≥5%	-
Sample	730°C	High temperature endurance performance: stress 530MPa, creep rupture time ≥30h		Creep elongation after fracture: ≥5%	-
Sample	625°C	High temperature creep performance: stress 730MPa, creep elongation time 100h		Creep elongation: ≤0.13%	-

 

• Smooth specimens should be pulled apart. After the endurance test time reaches the specified time, it is allowed to load until it breaks.

GH4720Li Heat treatment system

Solid solution	aging
1080~1110°C, within ±10°C of selected temperature, Insulation 4h, oil cooling	650±5°C, keep warm for 24h, air cool 760±5°C, keep warm for 16h, air cool

Fatigue performance

Test temperature T °C	Test conditions	Fatigue life Nf week
620	The test frequency is 0.33Hz, and the stress range is σmin~σmax: 0~1000MPa	≥10000
550	The test frequency is 0.33Hz, and the strain range εmin~εmax is 0~0.66%	≥50000

 

Detection

Processing

 

Packaging & Shipping

Company Profile

FAQ

Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .

Q2: Can I have free sample before making orders?

A2: Yes,we can supply free sample as requirement,but buyer needs to pay the freight charges ,the freight fee will return to buyer after making order.

Q3: How do you control the quality ?
A3: MTC and PMI will be sent before shipment,any 3rd party inspection if need .

Q4: How about your delivery time ?
A4: Generally delivery time is 15 working days .

Q5: How can I quickly get the price list ?
A5: Directly click "chat now" or send us email with detail specifications,you will get the official price list in 1 hour .