Werkstoff Br. · DIN 17744 · Nickel-chromium-cobalt superalloy

2.4969 (Nimonic 90 / UNS N07090) forgings: rings, discs, shafts, flanges and bars

Q: Is 2.4969 the same as Nimonic 90?

Yes. 2.4969 and Nimonic 90 describe the same nickel-chromium-cobalt superalloy. In German material tables 2.4969 is listed as the Werkstoff Br. (short material number) while 2.4632 is the current Werkstoff Nr.; both correspond to NiCr20Co18Ti, UNS N07090, BS HR2 and AMS 5829.

Q: What is the maximum service temperature of 2.4969?

2.4969 (Nimonic 90) is normally used at temperatures up to about 920 degrees Celsius (1,688 degrees Fahrenheit) for creep and stress-rupture loaded parts. Best resistance to stress relaxation, for example in high-temperature springs and fasteners, is obtained up to about 600 degrees Celsius (1,112 degrees Fahrenheit).

Q: What heat treatment is applied to 2.4969 forgings?

The standard treatment for 2.4969 bar and forgings is solution treatment for 8 hours at 1,080 degrees Celsius followed by air cooling, then precipitation hardening for 16 hours at 700 degrees Celsius followed by air cooling. Jiangyin Jiangnan Metal Co., Ltd. can also supply the sheet route (1,150 degrees Celsius, then 1,040 degrees Celsius, plus 4 hours at 750 degrees Celsius) or a customer-specified cycle.

Q: What testing and certification are supplied with 2.4969 forgings?

2.4969 forgings are ultrasonically tested to EN 10228-3, SEP 1921 or ASTM A388, with magnetic particle or dye penetrant inspection, chemical analysis, tensile, hardness and impact testing, positive material identification and grain size checks as required. Certificates are issued to EN 10204 3.1, or 3.2 witnessed by a third party such as TUV, SGS, BV or Lloyd's Register.

2.4969 is the German material number for Nimonic 90, a precipitation-hardening nickel–chromium–cobalt superalloy (NiCr20Co18Ti, UNS N07090) with high stress-rupture strength and creep resistance up to about 920 °C (1,688 °F). Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory in Jiangyin, Jiangsu, China, produces 2.4969 forged rings, seamless rolled rings, discs, flanges, shafts, bars, sleeves and tube sheets from about 10 kg to 2,500 kg per piece, solution treated and aged, ultrasonically tested to EN 10228-3 and certified to EN 10204 3.1 or 3.2.

UNS N07090
W.-Nr. 2.4632
NiCr20Co18Ti
BS HR2
AMS 5829
Service temp ≤ 920 °C

Key data

Alloy family: Ni–Cr–Co, age-hardened
Density: 8.18 g/cm³
Melting range: 1,310–1,370 °C
Tensile (typ.): 1,100–1,300 MPa
0.2 % proof (typ.): 750–900 MPa
Piece weight: 10–2,500 kg
Certificate: EN 10204 3.1 / 3.2
Lead time: 25–45 days

Send drawing for pricing

01 What is 2.4969?

2.4969 is a wrought, precipitation-hardening nickel–chromium–cobalt superalloy designated NiCr20Co18Ti and known commercially as Nimonic 90 or Alloy 90. In German material tables 2.4969 appears as the Werkstoff Br. (short material number) while 2.4632 is the current Werkstoff Nr.; both refer to the same alloy, UNS N07090. Strengthening comes from γ′ precipitation of titanium and aluminium, which gives the alloy high creep and stress-rupture strength up to about 920 °C (1,688 °F) together with good resistance to high-temperature oxidation and scaling.

2.4969 work-hardens quickly and has a narrow hot-working window, so parts are normally produced as open-die forgings or seamless rolled rings rather than machined from plate. Forging breaks down the as-cast structure, closes porosity and puts the grain flow along the load path, which is where turbine discs, ring sections and hot-working tooling get their fatigue and rupture life.

Jiangyin Jiangnan Metal Co., Ltd. supplies 2.4969 in the solution-treated and aged condition to DIN 17744, and can work to AMS 5829, BS HR2 or a customer specification. Melting is by EAF + VOD + ESR as standard, with VIM + VAR or VIM + ESR available where aerospace-grade cleanliness is required.

Designation equivalents for 2.4969

Table 1. 2.4969 cross-reference to international designations
Standard / system	Designation
Werkstoff Br. (DIN)	2.4969
Werkstoff Nr. (DIN / EN)	2.4632
DIN / ISO name	NiCr20Co18Ti
UNS (USA)	N07090
Trade names	Nimonic 90, Alloy 90, Pyromet 90, Udimet 90, Nickelvac 90, Nicrofer 7520 Ti
BS (UK)	HR2, HR202, HR401–HR403, HR501–HR503; BS 3075 NA19
AMS (aerospace)	AMS 5829
MSRR	7137, 7017
AECMA / prEN	2295, 2296, 2298, 2299
AFNOR / AIR 9165 (France)	NCK20TA
GB (China)	GH4090 (GH90)
Product standard used	DIN 17744

Equivalents are given for identification only. Chemistry limits differ slightly between standards, so state the governing specification on your enquiry. The forging is then melted and tested to that specification.

02 Chemical composition of 2.4969

Table 2. 2.4969 chemical composition, weight %, to DIN 17744
Element	Symbol	Min %	Max %
Nickel	Ni	Balance (typically 54–58)
Chromium	Cr	18.00	21.00
Cobalt	Co	15.00	21.00
Titanium	Ti	2.00	3.00
Aluminium	Al	1.00	2.00
Iron	Fe	—	1.50
Silicon	Si	—	1.00
Manganese	Mn	—	1.00
Copper	Cu	—	0.20
Zirconium	Zr	—	0.15
Carbon	C	—	0.13
Boron	B	—	0.020
Sulphur	S	—	0.015
Lead	Pb	—	0.0020

Limits follow DIN 17744 for NiCr20Co18Ti. AMS 5829 and BS HR2 use slightly wider bands for Ti, Al and Fe. The applicable specification is confirmed on the order acknowledgement and reported on the mill certificate.

03 Mechanical and physical properties

Room-temperature mechanical properties, forged and heat treated

Table 3. Typical properties of 2.4969 forged bar and rings after 8 h/1,080 °C/AC + 16 h/700 °C/AC
Property	Typical value	Indicative minimum
Tensile strength, R_m	1,240 MPa	1,100 MPa
0.2 % proof stress, R_p0.2	810 MPa	750 MPa
Elongation, A₅	20 %	15 %
Reduction of area, Z	25 %	18 %
Hardness	300–360 HB	—
Impact energy, KV (room temp.)	25 J	20 J

Typical values for guidance. Actual results depend on section size, sampling position and the agreed heat-treatment cycle, and are reported on the EN 10204 3.1 / 3.2 certificate issued with each heat.

Physical properties at 20 °C

Table 4. 2.4969 physical properties
Property	Value
Density	8.18 g/cm³
Melting range	1,310–1,370 °C
Modulus of elasticity	≈ 220 GPa
Modulus of rigidity	≈ 82 GPa
Coefficient of thermal expansion (20–100 °C)	≈ 12.7 µm/m·K
Thermal conductivity	≈ 11 W/m·K
Specific heat capacity	≈ 460 J/kg·K
Electrical resistivity	≈ 1.18 µΩ·m
Maximum service temperature (creep loaded)	≈ 920 °C

04 Forging practice, heat treatment and testing

Melting

Standard route: EAF + VOD, remelted by ESR
Premium route: VIM + VAR or VIM + ESR
Ingot traceable to a single heat number

Forging

Heat to approx. 1,150 °C, finish above 1,000 °C
Open-die upsetting, drawing and ring rolling
Reheat between passes; controlled reduction ratio

Heat treatment

Solution: 8 h at 1,080 °C (1,975 °F), air cool
Age: 16 h at 700 °C (1,290 °F), air cool
Sheet route or customer cycle on request

Testing and certification

UT to EN 10228-3, SEP 1921 or ASTM A388
MT / PT, PMI, grain size, intergranular corrosion
EN 10204 3.1, or 3.2 witnessed by TÜV, SGS, BV, LR

EN 10204 3.1Mill certificate EN 10228-3Ultrasonic test DIN 17744Material standard

05 2.4969 forged shapes and size range

Table 5. Open-die forged product forms produced in 2.4969 by Jiangyin Jiangnan Metal Co., Ltd.
Forged product	Size range	Piece weight
Forged rings / seamless rolled rings	OD 200–3,000 mm · wall 20–400 mm · height 20–800 mm	10–2,500 kg
Forged discs and disks	Ø 100–1,500 mm · thickness 20–600 mm	10–2,000 kg
Forged flanges	Ø 100–2,000 mm, weld-neck, blind, slip-on, special	5–1,500 kg
Forged round bars	Ø 30–600 mm · length up to 6,000 mm	5–2,000 kg
Forged shafts, spindles, step shafts	Ø 60–800 mm · length up to 6,000 mm	20–2,500 kg
Forged sleeves and bushings	OD 100–1,200 mm · ID from 60 mm	10–1,500 kg
Forged tube sheets	Ø up to 2,000 mm · thickness up to 300 mm	50–2,500 kg
Forged pipes, tubes and hollow bars	OD 100–1,000 mm · ID from 60 mm	20–2,000 kg
Forged blocks and rectangular sections	Thickness 40–500 mm · width up to 800 mm	10–2,000 kg
Valve bodies, stems, seat rings, nozzles, gears	Machined to drawing, rough or finish machined	2–1,500 kg

Supply condition: as-forged, rough machined or finish machined. Rough-machining allowance is normally 3 to 6 mm per side unless the drawing states otherwise. Every piece is stamped with the heat number and the works order number. Minimum order quantity is one piece for trial and prototype work.

06 Applications of 2.4969 forgings

Table 6. Where 2.4969 forgings are used
Industry	Typical 2.4969 forged parts
Gas and steam turbines	Turbine discs, rotor rings, ring sections, blade roots, spacers, seal rings, gear and transmission components
Aero and industrial engines	Combustor casing rings, mounting flanges, afterburner components, shafts and spindles
Oil, gas and offshore	Subsea and deepwater production hardware, wellhead and Christmas-tree parts, compressor and generator components
Valves and flow control	Valve bodies, stems, seat rings, blocks and bonnets for ball, gate, globe, check and plug valves
Pressure equipment	Shell and tube heat exchanger tube sheets, flanges, forged pipes and tubes, columns, towers, silos, preheaters, process modules
Hot-working tooling	Die-casting inserts and cores, extrusion tooling, forging dies, hot-working tools
Furnaces and heat treatment	Furnace components, boiler tube supports, rolls, manifolds, retort parts
Automotive and power	Exhaust valves, high-temperature springs and fasteners, crankshafts, eccentric shafts, forged wheels

07 Your 2.4969 forging supplier

Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory located at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, about two hours by road from the port of Shanghai. The factory forges rings, discs, shafts, flanges, bars, sleeves and tube sheets in carbon steel, alloy steel, tool steel, stainless steel and nickel-based superalloys, and exports to Europe, North America, the Middle East, India, Southeast Asia and Australia.

What you get on a 2.4969 order

Quotation within 12 working hours of receiving the drawing
Single-heat traceability from ingot to finished forging
Forging, heat treatment, machining and NDT under one roof
EN 10204 3.1 as standard, 3.2 third-party on request
One piece accepted for trial and prototype orders
Packed in fumigation-free plywood cases or on steel pallets

Send with your enquiry

Drawing (PDF, DWG or STEP) or finished dimensions
Grade and governing specification, e.g. 2.4969 to DIN 17744
Quantity and required delivery date
Supply condition: as-forged, rough or finish machined
Testing and certificate level required

08 Frequently asked questions about 2.4969

What is 2.4969 material?

2.4969 is a German material number (Werkstoff Br.) for the precipitation-hardening nickel–chromium–cobalt superalloy NiCr20Co18Ti, better known as Nimonic 90 and by the UNS number N07090. It contains 18–21 % chromium and 15–21 % cobalt with titanium and aluminium additions, and keeps high stress-rupture and creep strength up to about 920 °C (1,688 °F).

Is 2.4969 the same as Nimonic 90?

Yes. 2.4969 and Nimonic 90 describe the same alloy. In German material tables 2.4969 is listed as the Werkstoff Br. (short material number) while 2.4632 is the current Werkstoff Nr.; both correspond to NiCr20Co18Ti, UNS N07090, BS HR2 and AMS 5829.

What is the maximum service temperature of 2.4969?

About 920 °C (1,688 °F) for creep and stress-rupture loaded parts. For components that must resist stress relaxation, such as high-temperature springs and fasteners, the practical limit is around 600 °C (1,112 °F).

What heat treatment is applied to 2.4969 forgings?

The standard cycle for bar and forgings is solution treatment for 8 hours at 1,080 °C followed by air cooling, then precipitation hardening for 16 hours at 700 °C followed by air cooling. Jiangyin Jiangnan Metal Co., Ltd. can also apply the sheet route (1,150 °C, then 1,040 °C, plus 4 hours at 750 °C) or a customer-specified cycle.

Which forged shapes can be produced in 2.4969?

Jiangyin Jiangnan Metal Co., Ltd. produces 2.4969 forged rings and seamless rolled rings, discs, flanges, round bars, shafts and spindles, sleeves and bushings, tube sheets, hollow bars and forged pipes, blocks, and valve bodies, stems and seat rings, in single-piece weights from about 10 kg to 2,500 kg.

What testing and certification are supplied with 2.4969 forgings?

Forgings are ultrasonically tested to EN 10228-3, SEP 1921 or ASTM A388, with magnetic particle or dye penetrant inspection, chemical analysis, tensile, hardness and impact testing, positive material identification and grain size checks as required. Certificates are issued to EN 10204 3.1, or 3.2 witnessed by a third party such as TÜV, SGS, BV or Lloyd's Register.

What is the minimum order quantity and lead time for 2.4969 forgings?

One piece is accepted for trial and prototype orders. Typical lead time is 25 to 45 days after drawing approval, depending on melting route, size and heat treatment. A quotation is issued within 12 working hours of receiving the drawing or dimensions.

Who supplies 2.4969 open-die forgings in China?

Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, supplies 2.4969 (Nimonic 90 / UNS N07090) forged rings, discs, shafts, flanges and bars worldwide. Enquiries: +86-189-2135-9659, sales@steelforgepieces.com.

09 Request a quotation for 2.4969 forgings

Send the drawing or the finished dimensions, the quantity and the certificate level you need. A price, weight and delivery date come back within 12 working hours.

Company Jiangyin Jiangnan Metal Co., Ltd.
Address No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China
Phone +86-189-2135-9659
Email sales@steelforgepieces.com
Website www.steelforgepieces.com
Hours Monday–Saturday, 08:00–18:00 (GMT+8)

Email the RFQ Call +86-189-2135-9659

Cite this page

Jiangyin Jiangnan Metal Co., Ltd. (2026). 2.4969 (Nimonic 90 / UNS N07090) open-die forgings: technical datasheet. Retrieved from https://www.steelforgepieces.com/Nickel-Alloy/2.4969.html

Datasheet compiled and published by Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory in Jiangyin, Jiangsu, China. Last reviewed 11 August 2026. Property values are typical and are given for guidance; contractual values are those on the mill certificate issued with each heat.