Nickel superalloy · Werkstoff 2.4952 · UNS N07080

2.4952 Forgings (Nimonic 80A / Alloy 80A / UNS N07080)

Jiangyin Jiangnan Metal Co., Ltd. forges 2.4952 (NiCr20TiAl) into seamless rolled rings, flanges, shafts, discs, sleeves, bushings, tube sheets, hollow bars and round bars. Parts leave the works solution treated and aged, with EN 10204 3.1 or 3.2 certification.

Technical datasheet · Reviewed 11 August 2026 · Composition per DIN 17742

What is 2.4952?

2.4952 is the European material number (Werkstoff-Nr.) for NiCr20TiAl, an age-hardenable nickel-chromium superalloy known commercially as Nimonic 80A or Alloy 80A and designated UNS N07080. It carries 19.0-21.0 % chromium, 2.0-2.6 % titanium and 1.10-1.70 % aluminium, with nickel as the balance. Titanium and aluminium form a gamma-prime precipitate during ageing, and that precipitate is what separates 2.4952 from the softer, solid-solution Nimonic 75.

The alloy holds tensile and creep-rupture strength to about 815 °C (1500 °F) and stands up to oxidation and sulphur-bearing combustion gas. It goes into gas turbine blades, rings and discs, turbine bolting, nuclear boiler tube supports and exhaust valves for large diesel engines.

Werkstoff: 2.4952 (also 2.4631)
UNS: N07080
DIN name: NiCr20TiAl
Trade names: Nimonic 80A, Alloy 80A
Density: 8.19 g/cm³ (0.296 lb/in³)
Max service temperature: 815 °C (1500 °F)
Tensile strength, aged: 1250 MPa (181,000 psi) typical
Hot working range: 1050-1200 °C

2.4952 equivalent grades and standards

The same alloy is ordered under six or seven names, depending on the country the drawing came from. Every designation below refers to one composition, and we take orders against any of them.

2.4952 cross-reference table
System	Designation	Notes
Werkstoff-Nr. (DIN/EN)	2.4952	2.4631 covers the same composition
DIN chemical name	NiCr20TiAl	DIN 17742, DIN 17754
UNS (USA)	N07080	ASTM B637 / ASME SB-637
Trade name	Nimonic 80A	Alloy 80A is the generic form
British Standard	BS 3076 NA20, HR1, HR201, HR401, HR601	Bar, sheet, forgings
AFNOR (France)	NC20TA	-
JIS (Japan)	NCF 80A	-
Aerospace	MSRR 7011, AECMA prEN 2188-2190	Confirm the exact release requirement at enquiry
European standard	EN 10302	Creep-resisting steels, nickel and cobalt alloys

Use a cross-reference for identification only. State the standard, revision, heat-treatment condition and acceptance criteria on the purchase order.

Chemical composition of 2.4952

Composition is held to the DIN 17742 limits below. Where a customer orders to ASTM B637 / UNS N07080 instead, the wider limits in the right-hand column apply.

2.4952 / NiCr20TiAl chemical composition, weight %
Element	2.4952 min. %	2.4952 max. %	UNS N07080 (ASTM B637)
Carbon (C)	0.04	0.09	≤ 0.10
Chromium (Cr)	19.0	21.0	18.0 - 21.0
Nickel (Ni)	Balance	Balance	Balance
Titanium (Ti)	2.00	2.60	1.8 - 2.7
Aluminium (Al)	1.10	1.70	1.0 - 1.8
Iron (Fe)	-	1.00	≤ 3.0
Manganese (Mn)	-	1.00	≤ 1.0
Cobalt (Co)	-	2.00	≤ 2.0
Boron (B)	-	0.008	≤ 0.008
Silicon (Si)	-	1.00	≤ 1.0
Copper (Cu)	-	-	≤ 0.20
Zirconium (Zr)	-	-	≤ 0.15
Sulphur (S)	-	-	≤ 0.015

Tighter limits, for example a reduced sulphur or cobalt maximum, can be agreed at order and are then reported on the EN 10204 certificate.

Mechanical properties of 2.4952

Figures are for the solution-treated and aged condition at room temperature. The typical columns show what our forgings normally reach; the last column lists the minima that purchase specifications usually call for.

2.4952 (Nimonic 80A) room-temperature properties, precipitation hardened
Property	Typical (metric)	Typical (imperial)	Common specified minimum
Tensile strength, R_m	1250 MPa	181,000 psi	≥ 1000 MPa
Yield strength, R_p0.2	780 MPa	113,000 psi	≥ 620 MPa
Elongation at break, A	30 %	30 %	≥ 20 %
Reduction of area, Z	30 %	30 %	≥ 12 %
Hardness	-	-	≥ 300 HV

2.4952 physical and processing data
Property	Value
Density	8.19 g/cm³ (0.296 lb/in³)
Melting range	approx. 1360 - 1390 °C
Maximum service temperature, stressed	815 °C (1500 °F)
Oxidation and scaling resistance	to approx. 1000 °C (Cr₂O₃ layer)
Hot working temperature range	1050 - 1200 °C (1920 - 2190 °F)
Solution treatment	1080 °C / 8 h / air cool
Precipitation ageing	700 °C / 16 h / air cool
Welding	TIG, MIG and MMA; weld solution treated, then re-age

2.4952 forged product forms and size range

Every item below is made to drawing or to a dimensional standard, with machining allowance agreed at order. Hot working between 1050 °C and 1200 °C refines the grain and lays the flow lines along the part contour, which is why turbine rings and valve parts in this alloy are forged instead of cut from plate.

2.4952 forgings - product forms and capacity
Product form	Typical size range	Typical use
Seamless rolled rings	OD 200 - 3000 mm, wall 20 - 300 mm, height ≤ 600 mm	Turbine casing rings, bearing rings, flanged rings
Forged flanges	OD 100 - 2000 mm	Pressure vessels, heat exchangers, piping
Forged discs and blanks	Ø 100 - 1500 mm, thickness 30 - 400 mm	Turbine discs, valve discs, blade carriers
Forged shafts and spindles	Ø 80 - 800 mm, length ≤ 6000 mm	Rotors, eccentric shafts, valve stems
Forged round bars	Ø 50 - 800 mm	Bolting, fasteners, machined components
Sleeves and bushings	OD 100 - 1200 mm, ID ≥ 80 mm	Compressors, wear parts, subsea equipment
Hollow bars and forged tubes	OD 150 - 1200 mm	Pressure parts, nozzles, tube sheets
Blocks and rectangular forgings	to customer drawing	Valve bodies, die inserts, manifolds
Single-piece weight	5 kg - 10,000 kg	-

How we produce and test 2.4952 forgings

Melting and raw material

2.4952 billet is bought double melted, VIM plus ESR or VIM plus VAR, for turbine and aerospace-related work. The melt route is recorded on the certificate and heat numbers are traceable from billet to finished part.

Open-die forging

Billets are soaked into the 1050-1200 °C window, then upset, drawn, punched or ring rolled. Reduction ratio and finish-forging temperature are watched closely, since 2.4952 loses workability fast below roughly 1000 °C.

Heat treatment

Solution treatment at 1080 °C for 8 hours with air cooling, then ageing at 700 °C for 16 hours with air cooling. Furnace charts go out with the certificate on request.

Testing and certification

Chemical analysis, room-temperature tensile test, hardness and grain size as required. Ultrasonic testing to EN 10228-3, SEP 1921, ASTM A388 or ASTM E2375; penetrant testing to ASTM E165 or EN ISO 3452. Certificates to EN 10204 3.1, or 3.2 with third-party witness.

Where 2.4952 forgings are used

The alloy earns its cost where a part carries load in hot, sulphur-bearing gas. The main groups are:

2.4952 (Nimonic 80A) applications by industry
Industry	Typical 2.4952 forgings
Gas and steam turbines	Blades, blade carriers, seamless rolled rings, turbine discs, high-temperature bolting and studs
Large diesel and gas engines	Exhaust valves, valve spindles, valve seat rings, valve stems
Nuclear power	Boiler tube supports, hangers, fasteners
Oil, gas and subsea	Wellhead and Christmas tree components, subsea sleeves and bushings, compressor parts
Pressure equipment	Forged flanges, tube sheets, nozzles, shell-and-tube heat exchanger parts
Valves	Bodies, seat rings, discs and stems for ball, gate, globe, check and plug valves in hot service
Power transmission	Gear blanks, spindles, rolls and shafts running at elevated temperature
Chemical and process plant	Reactor internals, crystallizer parts, furnace fixtures, die-casting inserts and cores

2.4952 compared with neighbouring superalloys

Where 2.4952 does not fit the duty, one of these grades usually does. We forge all of them.

2.4952 versus Nimonic 75, Nimonic 90, Inconel X-750 and Waspaloy
Alloy	Werkstoff / UNS	Strengthening	Service limit	Choose it when
Nimonic 75	2.4951 / N06075	Solid solution, Ti only	approx. 1000 °C, low stress	Oxidation resistance matters more than strength, such as furnace fixtures
2.4952 (Nimonic 80A)	2.4952 / N07080	Gamma prime, Ti and Al	815 °C	High strength plus hot gas and sulphur resistance at moderate cost
Nimonic 90	2.4632 / N07090	Gamma prime plus cobalt	approx. 920 °C	Creep strength above the 80A limit is required
Inconel X-750	2.4669 / N07750	Gamma prime, Nb, Ti and Al	approx. 700 °C	Springs and bolting where relaxation resistance to 700 °C is enough
Waspaloy	2.4654 / N07001	Gamma prime plus Co and Mo	approx. 870 °C	Aerospace turbine discs and shafts with high strength requirements

Request a quotation for 2.4952 forgings

Send a drawing or the finished dimensions. We quote forged weight, machining allowance, heat treatment condition, testing scope and delivery time, normally within 24 hours on working days.

Include these five items and we can quote without a second email:

Grade and standard, for example 2.4952 to DIN 17742, or UNS N07080 to ASTM B637
Drawing or finished dimensions, and whether the price should include machining
Quantity and required delivery date
Heat treatment condition: as forged, solution treated, or solution treated and aged
Testing and certification: UT class, EN 10204 3.1 or 3.2, third-party inspection body

Jiangyin Jiangnan Metal Co., Ltd.
No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China
Phone and WhatsApp: +86-189-2135-9659
Email: sales@steelforgepieces.com

Frequently asked questions about 2.4952

What is material 2.4952?

2.4952 is the European material number (Werkstoff-Nr.) for NiCr20TiAl, an age-hardenable nickel-chromium superalloy carrying 19.0-21.0 % chromium, 2.0-2.6 % titanium and 1.10-1.70 % aluminium with nickel as the balance. It is sold commercially as Nimonic 80A or Alloy 80A and designated UNS N07080 in the United States. Jiangyin Jiangnan Metal Co., Ltd. forges 2.4952 into seamless rolled rings, flanges, shafts, discs and bars.

Is 2.4952 the same as Nimonic 80A?

Yes. 2.4952, NiCr20TiAl, Nimonic 80A, Alloy 80A and UNS N07080 all describe one alloy, and the Werkstoff number 2.4631 covers the same composition. Only the naming system differs.

What is the maximum service temperature of 2.4952?

2.4952 holds useful tensile and creep-rupture strength to about 815 °C (1500 °F). The chromium oxide film resists scaling to roughly 1000 °C, but load-bearing forgings are designed to the 815 °C limit.

What heat treatment is applied to 2.4952 forgings?

Solution treatment for 8 hours at 1080 °C (1976 °F) with air cooling, then precipitation ageing for 16 hours at 700 °C (1292 °F) with air cooling. Jiangyin Jiangnan Metal Co., Ltd. supplies 2.4952 forgings in this condition unless the order calls for as-forged or solution-treated only.

What is the difference between 2.4952 and 2.4631?

Both numbers cover NiCr20TiAl and mills use them interchangeably. A Werkstoff number alone does not fix the acceptance limits, so place the order against DIN 17742 or ASTM B637 together with the required condition and test requirements.

How does 2.4952 compare with Nimonic 75 and Nimonic 90?

Nimonic 75 is solid-solution strengthened and much softer. 2.4952 adds titanium and aluminium so it can be precipitation hardened to about 1250 MPa for service to 815 °C. Nimonic 90 adds cobalt for higher creep strength to roughly 920 °C.

What certificates are supplied with 2.4952 forgings?

An EN 10204 3.1 mill certificate is standard. EN 10204 3.2 certification witnessed by a third-party body such as TUV, SGS, BV or Lloyd's Register is available on request, and ultrasonic testing is reported to EN 10228-3, SEP 1921, ASTM A388 or ASTM E2375.

Who supplies 2.4952 open-die forgings in China?

Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, producing 2.4952 rolled rings, flanges, shafts, discs, sleeves and bars to customer drawings. Enquiries go to sales@steelforgepieces.com or +86-189-2135-9659.

What is the density of 2.4952?

The density of 2.4952 is about 8.19 g/cm³, or 0.296 lb/in³. A ring of 1000 mm outside diameter, 800 mm inside diameter and 200 mm height weighs roughly 463 kg.

Can 2.4952 be forged into seamless rolled rings?

Yes. The alloy is hot worked between 1050 °C and 1200 °C, so a billet can be upset, pierced and ring rolled into a seamless ring with no weld seam and grain flow following the circumference. Jiangyin Jiangnan Metal Co., Ltd. rolls 2.4952 rings and heat treats them before machining allowance is applied.

This datasheet is published by Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory in Jiangyin, Jiangsu, China. Composition limits follow DIN 17742, with ASTM B637 / UNS N07080 ranges shown alongside for reference. Mechanical values are room temperature, solution treated and aged. Reviewed 11 August 2026.

All nickel and cobalt alloy grades forged by Jiangnan Metal