Nickel Alloy 75/ Nimonic 75® / Nimonic 75

 

Nimonic

Nimonic is a registered trademark of Special Metals Corporation that refers to a family of nickel-based high-temperature low creep superalloys. Nimonic alloys typically consist of more than 50% nickel and 20%chromium with additives such as titanium and aluminium. The main use is in gas turbine components and extremely high performance reciprocating internal combustion engines. The Nimonic family of alloys was first developed in the 1940s by research teams at the Wiggin Works in Hereford, England, in support of the development of the Whittle jet engine.

Development

Working at Inco's Wiggin facility in the United Kingdom, L.B. Pfeil is credited with the development of Nimonic alloy 80 in 1941. Four years later Nimonic alloy 80A followed, an alloy widely used in engine valvestoday. Progressively stronger alloys were subsequently developed: Nimonic alloy 90 (1945), Nimonic alloy 100 (1955), and Nimonic alloys 105 (1960) and 115 (1964 - Prof John Gittus FREng. DSc. D Tech 1986.).

Properties and uses

Due to its ability to withstand very high temperatures, Nimonic is ideal for use in aircraft parts and gas turbine components such as turbine blades and exhaust nozzles on jet engines, for instance, where the pressure and heat are extreme. It is available in different grades, including Nimonic 75, Nimonic 80A, and Nimonic 90. Nimonic 80a was used for the turbine blades on the Rolls-Royce Nene and de Havilland Ghost, Nimonic 90 on the Bristol Proteus, and Nimonic 105 on the Rolls-Royce Spey aviation gas turbines. Nimonic 263 was used in the combustion chambers of the Bristol Olympus used on the Concordesupersonic airliner.

Nimonic 75 has been certified by the European Union as a standard creep reference material.

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Technical Data Sheet

 

Chemical Composition Limits

Weight%

Ni

Cr

Ti

C

Si

Cu

Fe

Mn

Alloy 75
Nimonic 75

Bal

18.9 - 21.0

0.2 / 0.6

0.08 / 0.15

1.0 max

0.5 max

5.0 max

1.0 max

Alloy 75 (UNS N06075, Nimonic 75) is a 80/20 nickel-chromium alloy with controlled additions of titanium and carbon. Nimonic 75 has good mechanical properties and oxidation resistance at high temperatures. Alloy 75 is most commonly used for sheet metal fabrications which require oxidation and scaling resistance together with medium strength at high operating temperatures. Alloy 75 (Nimonic 75) is also used in gas turbine engines, for components of industrial furnaces, for heat treating equipment and fixtures, and in nuclear engineering.

Typical Mechanical Properties

 

Material

Test Temp °F

Ultimate Tensile Strength (ksi)

0.2 % Yield Strength (ksi)

Elongation in 2"

Alloy 75 Sheet 1925°F Anneal

Room

114.4

59.4

31

Alloy 75 Sheet 1925°F Anneal

1000

105.6

51.9

27

Alloy 75 Sheet 1925°F Anneal

1200

69.3

40.0

32

Alloy 75 Sheet 1925°F Anneal

1400

41.4

22.0

75

Alloy 75 Sheet 1925°F Anneal

1600

20.2

9.9

90

Alloy 75 Sheet 1925°F Anneal

1800

9.7

4.4

91

Specifications

Rod, Bar, Wire and Forging Stock

BS HR 5, BS HR 504, DIN 17752, AECMA PrEN2306, AECMA PrEN2307, AECMA PrEN2306, AECMA Pr EN2307, AECMA PrEN2402, ISO 9723, ISO 9724, ISO 9725, MSRR 7004

Plate, Sheet, Strip

BS HR 203, DIN 17750, AECMA PrEN2293, AECMA PrEN2302, AECMA PrEN2411, ISO 6208, MSRR 7104

Pipe and Tube

BS HR 403, DIN 17751, AECMA PrEN2294, ISO 6207

Other

DIN 17742, AECMA PrEN2308, Werkstoff Nr 2.4630, W. Nr 2.4951, UNS N06075, Nimonic 75 (tradename), MSRR 7104 and MSRR 7004, AFNOR NC 20T

 

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Nimonic 75

Available in any of the 'profile options'

Nimonic 75 is a Nickel-Chromium alloy with good corrosion and heat resistance.

Chemical Composition

Specifications

Designations

Key Features

Typical Applications

Element

Min %

Max %

C

0.08

0.15

Si

-

0.30

Mn

-

1.00

S

-

0.15

Co

-

5.00

Cr

19.0

21.00

Cu

-

0.50

Fe

-

5.00

Pb

-

0.005

Ti

0.2

0.50

P

-

0.015

Al

-

0.40

Ni

bal

BS HR 5
BS HR 504

W.Nr 2.4951
W.Nr 2.4630
UNS N06075
AWS 032

Good corrosion resistance
Good heat resistance
High temperature static applications **

Aerospace fasteners

Density

8.37g/cm³

0.302 lb/in³

Melting Point

1380°C

2520°F

Coefficient of Expansion

11.0 μm/m °C (20 - 100°C)

6.1 x 10-6 in/in °F (70 - 212°F)

Modulus of Rigidity

75.6 kN/mm²

10965 ksi

Modulus of Elasticity

206 kN/mm²

29878 ksi

           

 

Heat Treatment of Finished Parts

Condition as supplied by Alloy Wire

Type

Temperature

Time (Hr)

Cooling

°C

°F

Annealed or Spring Temper

Stress Relieve

450 - 470

840 - 880

0.5 - 1

Air

 

Properties

Condition

Approx. tensile strength

Approx. operating temperature

N/mm²

ksi

°C

°F

Annealed

700 - 800

102 - 116

-200 to +1000

-330 to +1830

Spring Temper

1200 - 1500

174 - 218

-200 to +1000

-330 to +1830

 

** High temperature static applications = still/fixed/motionless/rigid

 

Provide all grade of these alloy by different shape & size is Our expertise

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Availability:

 

 

 
 

NIMONIC 75Plate

NIMONIC 75Fittings

NIMONIC 75Tube / Pipe

 

 

 

 

 

NIMONIC 75Bar

NIMONIC 75Sheet

NIMONIC 75Coil /Strap

 

 

 

 

 

NIMONIC 75Fasteners / Flanges

NIMONIC 75Powder

NIMONIC 75Welding Product

 

 

Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

Provide all grade of these alloy by different shape & size is Our expertise

For any inquiry & request, don't hesitate to contact us