Nickel Alloy / Open-Die Forgings
NiCr8020 Forgings: Alloy 80/20 Rings, Flanges, Bars and Discs
Open-die forged NiCr8020 (UNS N06003, W.Nr. 2.4869, EN NiCr80-20) made to your drawing in Jiangyin, China, with EN 10204 3.1 or 3.2 certification.
NiCr8020
Austenitic nickel-chromium alloy, Alloy 80/20
- UNS
- N06003
- Werkstoff
- 2.4869
- EN name
- NiCr80-20
- Standards
- DIN 17470 / 17471
- Max. temp.
- 1200 °C
- Density
- 8.3 g/cm³
NiCr8020 is an austenitic nickel-chromium alloy of nominally 80 % nickel and 20 % chromium. It carries the designations UNS N06003, Werkstoff number 2.4869 and EN NiCr80-20, and is covered by DIN 17470 for heating conductor alloys and DIN 17471 for electrical resistance alloys. The chromium-oxide scale it forms adheres well, which gives good resistance to scaling and thermal fatigue in air up to about 1200 °C. Common uses are industrial electric furnaces, enamelling furnaces and heat treatment plant.
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory in Jiangyin City, Jiangsu Province, China. We forge NiCr8020 into rings, seamless rolled rings, flanges, round bars, discs, shafts, sleeves, bushings, tube sheets and near-net shapes to customer drawing. Material is melted by EAF plus VOD, with ESR remelt available. Forgings are ultrasonically examined to EN 10228-3, SEP 1921 or ASTM A388 and certified to EN 10204 3.1 or 3.2. For a quotation, email sales@steelforgepieces.com or call +86-189-2135-9659.
Designations and equivalent grades
NiCr8020 is sold under a number of proprietary names. The names below all refer to the same nominal 80 Ni / 20 Cr composition, though individual producers set tighter ranges within the specification.
| UNS number | N06003 |
|---|---|
| Werkstoff number | 2.4869 |
| EN designation | NiCr80-20 |
| DIN standards | DIN 17470 (heating conductor alloys), DIN 17471 (electrical resistance alloys), DIN 17742 |
| Trade names | Alloy 80/20, NiCr 80 20, Ni80Cr20, Nichrome 80, Nichrome V, Chromel A, Nikrothal 80, Tophet A, Resistohm 80, Cronix 80, Brightray C, Stablohm 650 |
| Alloy family | Austenitic nickel-chromium heat-resisting and electrical resistance alloy |
Chemical composition of NiCr8020
The limits below follow W.Nr. 2.4869 and EN NiCr80-20. Nickel is the balance and iron is held to 1.00 % maximum, which is the main point of difference from the iron-bearing NiCr grades.
| Element | Symbol | Content, % |
|---|---|---|
| Nickel | Ni | 75.0 min (balance, nom. 80) |
| Chromium | Cr | 19.0 - 21.0 |
| Iron | Fe | 1.00 max |
| Carbon | C | 0.15 max |
| Silicon | Si | 0.50 - 2.00 |
| Manganese | Mn | 1.00 max |
| Copper | Cu | 0.50 max |
| Aluminium | Al | 0.30 max |
| Cobalt | Co | 1.50 max |
| Phosphorus | P | 0.020 max |
| Sulphur | S | 0.015 max |
Some producers add small rare-earth additions to improve oxide adhesion under frequent switching or wide temperature swings. Tighter ranges can be agreed at order stage.
Mechanical and physical properties
Mechanical properties at 20 °C, solution annealed
| Property | Value |
|---|---|
| Tensile strength, Rm | 650 min N/mm² |
| 0.2 % proof strength, Rp0.2 | 280 min N/mm² |
| Elongation, A5 | 30 min % |
| Modulus of elasticity | 200 kN/mm² |
Physical properties
| Property | Value |
|---|---|
| Density | 8.3 - 8.4 g/cm³ |
| Melting range | about 1400 °C |
| Max. continuous service in air | about 1200 °C |
| Electrical resistivity | 1.09 - 1.12 Ω·mm²/m |
| Thermal conductivity | 15 W/(m·K) |
| Specific heat capacity | 420 J/(kg·K) |
| Thermal expansion, 20 to 1000 °C | about 18 × 10-6 K-1, typical |
| Magnetic behaviour | Non-magnetic, austenitic |
Service atmosphere. NiCr8020 performs well in air, nitrogen and other oxygen-bearing or low-oxygen nitrogen atmospheres, and resists carburising conditions. Resistance is poor in oxidising and reducing gases that contain sulphur. Contact us before ordering if the service atmosphere is sulphidising.
NiCr8020 forged products we manufacture
The items below are produced by open-die forging or ring rolling at our Jiangyin plant, machined to your drawing and supplied with full traceability. We do not hold a fixed catalogue. Parts are made to the dimensions you send.
- Forged rings
- Seamless rolled rings
- Flanges
- Round bars
- Discs and blanks
- Shafts and spindles
- Sleeves
- Bushings
- Tube sheets
- Hollow bars and tubes
- Nozzles
- Valve bodies and seat rings
- Gear blanks
- Step shafts
- Rectangular blocks
- Near-net shapes to drawing
| Form | Outside diameter / length | Unit weight |
|---|---|---|
| Forged and rolled rings | On request, send drawing | On request |
| Round bars | On request, send drawing | On request |
| Discs and tube sheets | On request, send drawing | On request |
| Shafts | On request, send drawing | On request |
Delivery condition: forged, heat treated, rough machined or finish machined. Surface: as-forged, shot blasted, turned or ground.
How we make a NiCr8020 forging
- MeltingEAF plus VOD refining, with ESR remelt where a cleaner and more homogeneous ingot is required. Heat analysis is recorded and carried through to the certificate.
- Open-die forgingIngot or billet is heated and forged, typically from about 1150 to 1200 °C and finished above roughly 950 °C, with enough reduction ratio to close porosity and refine grain. Rings are ring-rolled to a seamless profile.
- Heat treatmentSolution annealing followed by rapid cooling, at the temperature and holding time agreed for the section size and end use.
- MachiningRough or finish machining to your drawing, including bores, faces, grooves and drilled patterns for tube sheets and flanges.
- Non-destructive examinationUltrasonic testing to EN 10228-3, SEP 1921 or ASTM A388 at the acceptance class you specify. PT and dimensional inspection on request.
- Certification and despatchEN 10204 3.1 certificate, or 3.2 with third-party witness such as TUV, BV, LR, SGS or your own inspector. Marking, packing and export documentation to order.
Testing, inspection and certification
| Test | Standard or scope |
|---|---|
| Chemical analysis | Heat analysis on every melt, product analysis on request |
| Ultrasonic testing | EN 10228-3, SEP 1921 or ASTM A388, acceptance class per order |
| Mechanical testing | Tensile, hardness and impact as specified |
| Material certificate | EN 10204 3.1 as standard, EN 10204 3.2 with third-party witness on request |
| Positive material identification | PMI by XRF or OES on request |
| Dimensional inspection | Full dimensional report against your drawing on request |
Applications for NiCr8020 forgings
Industrial electric furnaces
Furnace-construction components, heating element supports, terminals, hangers and hearth fixtures working in air up to about 1200 °C.
Enamelling and firing furnaces
Muffles, retorts, radiant tube components and furnace internals subject to repeated heating and cooling cycles.
Heat treatment plant
Baskets, grids, trays, fixtures and conveyor components for carburising and general heat-treatment furnaces.
Waste incineration
Components for household and specialised waste incineration and fluidised-bed combustion where the atmosphere is oxidising and free of sulphur.
Process furnaces and burners
Burner components, nozzles and process-furnace internals in oxidising and carburising service.
Electrical resistance components
Forged blanks and machined parts for resistance elements, terminals and connectors where resistivity of 1.09 to 1.12 Ω·mm²/m is required.
NiCr8020 compared with similar alloys
NiCr8020 is often confused with the iron-bearing NiCr grades and with Inconel 600. NiCr8020 contains almost no iron. NiCr6015 has iron as the balance. Inconel 600 is a corrosion-resisting engineering alloy rather than a heating conductor alloy.
| Grade | Ni % | Cr % | Fe % | Max. temp. in air |
|---|---|---|---|---|
| NiCr8020 (N06003 / 2.4869) | balance, 80 | 19 - 21 | 1.0 max | 1200 °C |
| NiCr7030 | balance, 70 | 28 - 31 | 1.0 max | 1250 °C |
| NiCr6015 | 55 - 61 | 15 - 18 | balance, 22 | 1150 °C |
| Inconel 600 (N06600 / 2.4816) | 72 min | 14 - 17 | 6 - 10 | 1090 °C |
Check the composition, not the name. Datasheets in circulation sometimes list 14 to 18 % Cr and 21 to 25 % Fe under the heading NiCr8020. Those figures belong to NiCr6015. For NiCr8020 to 2.4869 and UNS N06003 the correct limits are 19 to 21 % Cr with Fe at 1.00 % maximum. Confirm the grade against the analysis before you place an order.
Frequently asked questions about NiCr8020
What is NiCr8020?
NiCr8020 is an austenitic nickel-chromium alloy of nominally 80 % nickel and 20 % chromium. It carries the designations UNS N06003, Werkstoff number 2.4869 and EN NiCr80-20, and is covered by DIN 17470 for heating conductor alloys and DIN 17471 for electrical resistance alloys. The chromium-oxide scale it forms adheres well, which gives good resistance to scaling and thermal fatigue in air up to about 1200 °C.
What is the chemical composition of NiCr8020?
NiCr8020 contains 19.0 to 21.0 % chromium and a minimum of 75 % nickel as the balance, nominally 80 %. Iron is limited to 1.00 % max, carbon 0.15 % max, silicon 0.50 to 2.00 %, manganese 1.00 % max, phosphorus 0.020 % max and sulphur 0.015 % max. Copper is 0.50 % max, aluminium 0.30 % max and cobalt 1.50 % max. The low iron content separates NiCr8020 from iron-bearing grades such as NiCr6015.
What is the maximum service temperature of NiCr8020?
NiCr8020 is rated for continuous service in air up to about 1200 °C. Furnace-construction components under cycling conditions are often quoted at 1150 °C. The working limit depends on atmosphere, stress and section size. The alloy suits air, nitrogen and other oxygen-bearing or low-oxygen nitrogen atmospheres. Resistance is poor in sulphur-bearing oxidising and reducing gases.
What is the difference between NiCr8020 and NiCr6015?
The difference is iron content and nickel level. NiCr8020 is nickel-balanced with 19 to 21 % chromium and 1.00 % max iron. NiCr6015 contains 55 to 61 % nickel, 15 to 18 % chromium and iron as the balance at roughly 22 %. NiCr6015 is the cheaper, lower-temperature grade at about 1150 °C. NiCr8020 has higher oxidation resistance and better scale adhesion under thermal cycling. Datasheets showing 14 to 18 % chromium and 21 to 25 % iron under the name NiCr8020 are describing NiCr6015.
Is NiCr8020 the same as Inconel 600?
No. Inconel 600, UNS N06600 and W.Nr. 2.4816, contains 72 % nickel minimum, 14 to 17 % chromium and 6 to 10 % iron. It is a corrosion-resistant engineering alloy supplied to ASTM B564 and similar product standards. NiCr8020, UNS N06003 and W.Nr. 2.4869, is a nickel-chromium heating conductor and heat-resisting alloy with almost no iron, selected for oxide-scale adhesion and electrical resistivity rather than for pressure-vessel service. We forge Inconel 600 as well if that is the grade you need.
Can NiCr8020 be forged, and what shapes are available?
Yes. Jiangyin Jiangnan Metal Co., Ltd. open-die forges NiCr8020 into forged rings, seamless rolled rings, flanges, round bars, discs, blanks, shafts, spindles, sleeves, bushings, tube sheets, hollow bars, nozzles and near-net shapes to customer drawing. Typical practice is to forge from about 1150 to 1200 °C and finish above roughly 950 °C, then solution anneal and cool rapidly.
What certificates and testing are supplied with NiCr8020 forgings?
Every NiCr8020 forging is supplied with a material certificate to EN 10204 3.1, or to EN 10204 3.2 with third-party witness where required. Ultrasonic examination is carried out to EN 10228-3, SEP 1921 or ASTM A388 at the acceptance class stated on the order. Chemical analysis, mechanical testing, hardness, dimensional inspection and PMI can be added on request.
Where is NiCr8020 used?
NiCr8020 is used for industrial electric furnace and enamelling furnace internals, heating element supports and terminals, furnace-construction components, muffles, retorts and radiant tubes, waste incineration and fluidised-bed plant, heat-treatment furnace fixtures such as baskets, grids and trays, and burner and process-furnace components working in oxidising atmospheres up to about 1200 °C.
How do I get a price for a NiCr8020 forging?
Send a drawing or the finished dimensions, the required standard and the quantity to sales@steelforgepieces.com, or call +86-189-2135-9659. Jiangyin Jiangnan Metal Co., Ltd. is at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China. Quotations for NiCr8020 open-die forgings are normally returned within one working day.
What are the other names for NiCr8020?
NiCr8020 is also sold as Alloy 80/20, NiCr 80 20, Ni80Cr20, Nichrome 80, Nichrome V, Chromel A, Nikrothal 80, Tophet A, Resistohm 80, Cronix 80, Brightray C and Stablohm 650. The formal designations are UNS N06003, Werkstoff number 2.4869 and EN NiCr80-20.
Request a quotation for NiCr8020 forgings
Send a drawing, a sketch or the finished dimensions and quantity. We quote open-die forgings in NiCr8020 and every other nickel alloy on this site, normally within one working day.
- Phone, WhatsApp, WeChat
- +86-189-2135-9659
- Factory
- No.1 Chengxiqiao Road,
Zhouzhuang Town, Jiangyin,
Jiangsu, China - Send with your enquiry
- Drawing, grade, quantity, standard
About the manufacturer
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China. We make forged rings, seamless rolled rings, flanges, round bars, discs, shafts, sleeves, bushings and tube sheets to customer drawing in carbon steel, alloy steel, tool steel, stainless steel and nickel alloys. Nickel grades include NiCr8020, the Inconel, Incoloy, Monel, Hastelloy and Nimonic families, and expansion alloys such as Invar 36 and Kovar.
Jiangyin is in the Yangtze River delta forging cluster in southern Jiangsu, about 150 km from Shanghai port.
Page last updated 24 August 2026.
Standards and references
- DIN 17470, Heating conductor alloys, technical delivery conditions
- DIN 17471, Electrical resistance alloys, technical delivery conditions
- DIN 17742, Nickel wrought alloys with chromium
- EN 10204, Metallic products, types of inspection documents, 3.1 and 3.2
- EN 10228-3, Non-destructive testing of steel forgings, ultrasonic testing
- SEP 1921, Ultrasonic testing of forgings, acceptance classes
- ASTM A388 / A388M, Ultrasonic examination of steel forgings