NIMONIC Alloy 80A / NICKEL Alloy 80A (UNS N07080)

Technical Data Sheet

 

Chemical Composition Limits

Weight %

Ni

Cr

Ti

Al

C

Si

Cu

Fe

Mn

Co

B

Zr

S

Alloy 80A

Bal

18.0-21.0

1.8-2.7

1.0-1.8

0.10 max

1.0 max

0.2 max

3.0 max

1.0 max

2.0 max

0.008 max

0.15 max

0.015 max

Alloy 80A (Nimonic® alloy 80A) is a wrought, age-hardenable nickel-chromium alloy. Alloy 80A is similar to alloy 75 but made precipitation hardenable by additions of aluminium and titanium. Alloy 80A has good corrosion and oxidation resistance and high tensile and creep-rupture properties at temperatures to 815ºC (1500ºF). Vacuum refined versions are also available. Alloy 80A is used for gas-turbine components (blades, rings, discs), bolts, tube supports in nuclear generators, exhaust valves in internal combustion engines and has many other offshore/marine, automotive and electrical applications.

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Typical Mechanical Properties

 

Material	Condition	Ultimate Tensile Strength ksi	Yield Strength ksi	Elongation on 4D (min)	Hardness min
Alloy 80A	Solution Annealed & Precipatation Treated (aged)	145	90	20	300 HV

 

Availability:
NIMONIC 80 Plate	NIMONIC 80 Fittings	NIMONIC 80 Tube / Pipe
NIMONIC 80 Bar	NIMONIC 80 Sheet	NIMONIC 80 Coil /Strap
NIMONIC 80Fasteners / Flanges	NIMONIC 80 Powder	NIMONIC 80  Welding Product

Specifications

Alloy 80A Rod, Bar, Wire and Forging Stock	BS 3076 HR1, ASTM B 637, AECMA PrEn2188, AECMA PrEn2189, AECMA PrEn 2190, AECMA PrEn 2396, AECMA PrEn2397, AIR 9165-37
Alloy 80A Plate, Sheet and Strip	BS HR 201, AECMA PrEn2191
Alloy 80A Pipe and Tube	BS HR 401
Alloy 80A Other	BS HR 601, BS HR1, DIN 17742, AFNOR NC 20TA, UNS N07080, Werkstoff Nr 2.4952, Werkstoff Nr 2.4631, NIMONIC 80a (trademark), MSRR 7095 and MSRR 7011, MSRR 7013, HR201, HR401, HR601, NA20, VAT80A

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Introduction

NIMONIC alloys are primarily composed of nickel and chromium. These alloys are known for their high-temperature low-creep and high performance. Additives like aluminium, carbon and titanium are infused into the alloy. The NIMONIC alloy was first developed in 1940 in England. NIMONIC alloys available commercially are NIMONIC 75, NIMONIC 80A, 81, 86, NIMONIC PE11 and 16.

NIMONIC alloy 80A is a wrought, age-hardened alloy that is strengthened by additives like titanium, aluminium and carbon. It is manufactured by high-frequency melting and casting in air. It is similar to NIMONIC alloy 75. It has good corrosion and oxidation resistance. The creep rupture and tensile properties are high at 815°C (1500°F).

This datasheet will look into the chemical composition, properties and applications of NIMONIC alloy 80A.

Chemical Composition

The chemical composition of NIMONIC alloy 80A is given in the following table.

Element	Content (%)
Nickel, Ni	69
Chromium, Cr	18-21
Iron, Fe	≤3
Cobalt, Co	≤2
Titanium, Ti	1.8-2.7
Aluminum, Al	1.0-1.8
Others	Remainder

Physical Properties

The following table discusses the physical properties of NIMONIC alloy 80A.

Properties	Metric	Imperial
Density	8.19 gm/cm3	0.296 lb/in3

Mechanical Properties

The mechanical properties of NIMONIC alloy 80A are tabulated below.

Properties	Metric	Imperial
Tensile strength(annealed)	1250 MPa	181 ksi
Yield strength(annealed)	780 MPa	113 ksi
Elongation at Break	30%	30%

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Other Designations

Some of the other designations that are used to denote NIMONIC alloy 80A are as below:-

• UNS N07080
• BS 3076
• HR1
• HR401
• HR601
• HR201
• ASTM B637
• DIN 17742
• DIN17754

Fabrication

Machinability

The conventional machining techniques used on iron alloys may be used for this alloy. This alloy work-hardens during machining.

Welding

NIMONIC alloy 80A can be welded using common techniques, using a matching filler metal. A prerequisite for welding is that the metal should be solution treated. Fusion welding by tungsten inert gas welding and metal inert gas welding will be suitable for this alloy.

Hot working

NIMONIC alloy 80A can be hot worked at temperature ranges of 1050-1200°C (1920-2190°F).

Forging

NIMONIC alloy 80A can be hot forged at temperatures in the range of 982-1176°C (1800-2150°F).

Cold working

Cold working may be done on the alloy.

Annealing

NIMONIC alloy 80A should be annealed at 1079°C (1975°F) for about 8 hours and air cooled.

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Applications

The NIMONIC alloy 80A is used in the following applications:

• Gas turbine engineering
• Automobile exhaust valves
• Die-casting inserts and cores
• Nuclear boiler tube parts.

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.

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