Heat-Resistant Alloys · Nickel-Iron-Chromium-Silicon

Incoloy Alloy 330 / UNS N08330 / Alloy 330 Forging Parts

Published: 18 May 2022  |  Last updated: 19 August 2026  |  Technically reviewed by the Jiangyin Jiangnan Metal Co., Ltd. Metallurgical Engineering Team

Alloy 330 is an austenitic nickel-iron-chromium-silicon heat-resistant alloy containing nominally 35% nickel, 19% chromium and 1.2% silicon, designated UNS N08330 and specified by ASTM B511, B512 and B536. It is specified where carburising and cyclically heated atmospheres would destroy an ordinary stainless steel. The 35% nickel content keeps the structure fully austenitic, blocks sigma-phase embrittlement and chloride stress-corrosion cracking, and the deliberate silicon addition builds a tightly adherent scale that resists carbon pickup. It resists scaling continuously to about 1095 °C (2000 °F), with producers quoting useful oxidation resistance to roughly 1150 °C (2100 °F).

Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, manufactures Alloy 330 in forged form to customer drawings: seamless rolled rings to 2,500 mm outside diameter, forged discs to 1,800 mm diameter, shafts to 8 m length, bars from Ø25 mm to Ø500 mm, and single pieces to 8,000 kg. Material is melted by EAF + VOD + ESR and supplied with EN 10204 3.1 certification as standard.

UNS

N08330

Werkstoff

1.4864

Nickel

34-37 wt %

Chromium

17-20 wt %

Silicon

0.75-1.50 wt %

Max scaling temp

1095 °C

Density

8.08 g/cm³

Hardenable

No (austenitic)

What is Alloy 330 (UNS N08330)?

Alloy 330 is a wrought austenitic nickel-iron-chromium-silicon alloy of nominally 35% Ni, 19% Cr, 1.2% Si and balance iron, developed for continuous and cyclic service in carburising, oxidising and nitrogen-bearing atmospheres up to about 1095 °C (2000 °F). It sits in the gap between the chromium-rich stainless steels such as 310S and the nickel-base superalloys: more resistant than a stainless steel to carbon pickup and thermal fatigue, considerably cheaper than Inconel 601 or 617, and stable enough to be used in the as-welded condition in most furnace hardware.

Three points in the chemistry explain most of its behaviour in service.

• 35% nickel keeps the structure austenitic at every temperature. There is no ferrite to transform and no phase change on cooling, so the alloy cannot be hardened by heat treatment, only by cold work. The same high nickel content is what makes it highly resistant to chloride stress-corrosion cracking and to sigma-phase embrittlement, the failure that removes ductility from 310S after long exposure in the 650-870 °C band.
• Silicon at 0.75-1.50% is an alloying addition here, not a residual. Silicon promotes a dense, tightly adherent oxide film that resists spalling under thermal cycling and slows carbon diffusion into the metal. This is the main reason Alloy 330 outperforms 310S in a carburising furnace even though 310S carries more chromium.
• 17-20% chromium provides the oxidation resistance and the aqueous corrosion resistance that survives condensate and washdown between furnace campaigns.

The same combination resists green rot, the internal chromium-carbide and oxide attack that occurs in atmospheres alternating between carburising and oxidising. That is the normal duty cycle of a carburising furnace retort, and of a heat-treat basket that is quenched, washed and returned to the furnace.

The grade has clear limits. Its room-temperature yield strength of roughly 207-296 MPa is modest, and its creep strength above 900 °C is lower than that of Alloy 800H or the nickel-base grades. For load-bearing pressure parts at temperature, Alloy 800H/800HT carries ASME code allowable stresses that Alloy 330 does not, and molten salts or sulphidising gas call for a different alloy altogether. Alloy 330 is used mainly for furnace hardware and process internals, where the atmosphere and the thermal cycle do the damage rather than the stress.

Alloy 330 forgings: supplier quick facts

Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory in Jiangyin, Jiangsu Province, China, producing Alloy 330 (UNS N08330 / AISI 330 / DIN 1.4864) forged rings, seamless rolled rings, flanges, shafts, discs, sleeves, bushings, tube sheets and bars to customer drawings.

What Alloy 330 forged products are available?

Jiangyin Jiangnan Metal produces Alloy 330 through three routes, selected by geometry and quantity. Open-die forging covers long shafts, blocks, tube sheets and large discs, and is used wherever single-piece size matters more than repeatability. Seamless ring rolling produces rings from 200 mm to 2,500 mm outside diameter and is the normal choice for retort flanges, muffle rings, fan hubs and flange blanks. Near-net-shape forging is used where the die profile can remove 30-50% of the rough machining. That saving is worth more on this grade than on most, because Alloy 330 is expensive per kilogram and work-hardens under a dull tool.

One point about route selection applies to heat-resistant service in particular. In a plate-fabricated ring, the weld and the mid-thickness segregation of the plate are usually where a thermal-fatigue crack begins. A seamless rolled ring has continuous circumferential grain flow and no longitudinal seam, so it survives more thermal cycles than a rolled-and-welded plate ring of the same chemistry. Where a retort flange or muffle ring cycles daily between ambient and 1000 °C, specify the forged route on the drawing and state that welded-plate substitution is not accepted.

• Seamless rolled rings
• Forged rings
• Forged flanges
• Forged round bars
• Forged flat bars & blocks
• Forged discs & blanks
• Forged shafts & spindles
• Forged sleeves & bushings
• Forged tube sheets
• Forged tubes & hollows
• Forged fan hubs & gear blanks
• Custom near-net-shape parts

What are the equivalent designations of Alloy 330?

This grade appears under at least a dozen names, depending on the standards body, the producer and the age of the drawing. Every designation in the table below refers to the same nominal 35Ni-19Cr-1.2Si chemistry. Jiangyin Jiangnan Metal Co., Ltd. accepts purchase orders under all of them and certifies material to UNS N08330 with the equivalents cross-listed on the certificate.

What is the chemical composition of Alloy 330?

The composition below follows ASTM B511 / B512 / B536 practice for UNS N08330. Two limits separate it from an ordinary austenitic stainless steel: the nickel floor of 34%, and the minimum silicon of 0.75%. Apart from nickel and chromium, silicon is the only element in the specification with a lower bound, which is a measure of how much the carburisation resistance depends on it.

Balance is iron plus incidental elements. Where a purchaser needs restricted residuals, for example low cobalt for nuclear service or a lower sulphur ceiling for improved scale adhesion, state the limit on the order and it will be reported on the certificate.

Our melting practice. Jiangyin Jiangnan Metal Co., Ltd. melts Alloy 330 by EAF + VOD followed by ESR (electroslag remelting). VOD lowers carbon and dissolved gases, which matters here because the carbon ceiling is 0.08% and service will add more. ESR refines the inclusion population and gives the directional solidification structure that forges cleanly at 1120-1180 °C. Where an application demands the lowest possible sulphur and oxide inclusion count, as in thin-wall retort sections and long-life radiant-tube parts, VIM + VAR stock can be sourced on request; specify it at RFQ stage, since it changes both price and lead time. Ladle and product analyses are both reported on the EN 10204 certificate.

What are the physical properties of Alloy 330?

Two of these values affect design more than the rest. Thermal conductivity is low at room temperature (12.4 W/m·K) and more than doubles by 980 °C, so heat-up gradients in a thick forging are steep and thermal stress during a fast ramp is real. And the coefficient of thermal expansion is high, near 18 × 10⁻⁶ /°C over a working range to 870 °C, which is why fixture clearances that look generous cold can seize hot. The thermal growth calculator below turns that into millimetres.

Density, specific heat, conductivity, resistivity, modulus and permeability are established values for this chemistry and can be used directly for design screening. Expansion coefficients are typical producer values and vary with heat and measurement method; where the figure is contractually important, state it on the purchase order and we will report the measured result.

Typical mean values from published producer data, quoted from 20 °C to the stated temperature. Mean coefficients are not interchangeable with instantaneous coefficients; for a part cycling between two elevated temperatures, calculate from the difference of two mean-expansion figures rather than applying one coefficient to the interval.

What are the mechanical properties of Alloy 330?

Alloy 330 is supplied in the annealed (or as-hot-worked and annealed) condition and cannot be strengthened by heat treatment. Cold work raises room-temperature strength but is normally undesirable in furnace hardware, since the first heating cycle recovers it and can distort the part. Design to the annealed properties.

*Specification minima follow common ASTM B511/B536 practice for hot-worked and annealed N08330 and are given for orientation. Always confirm the minima in the revision of the standard in force at your contract date. That revision governs acceptance, not this page.

How does Alloy 330 behave in oxidising, carburising and nitriding atmospheres?

Oxidation

Alloy 330 resists scale formation continuously to about 1095 °C (2000 °F), and the scale it forms is tightly adherent, which matters more than the absolute limit. Under cyclic heating and cooling, a scale that spalls exposes fresh metal on every cycle and the section wastes away in visible steps. The chromium plus silicon combination in this grade produces a film that stays attached through the cycle, which is why Alloy 330 baskets and fixtures outlast 310S hardware in the same furnace even though 310S carries 25% chromium.

Carburisation and green rot

Carbon diffuses into any austenitic alloy exposed to a carburising gas. It precipitates as chromium carbides, robs the matrix of the chromium that was maintaining the oxide, and turns a ductile section into a brittle one. Two features of Alloy 330 slow this down: nickel at 35% reduces carbon solubility and diffusivity in the austenite, and silicon builds a barrier layer that carbon crosses slowly. In alternating carburising and oxidising service, Alloy 330 also resists green rot, the internal carbide-plus-oxide attack that gives the failure its characteristic green fracture face. That describes the duty cycle of a carburising furnace retort, of a basket that is quenched and returned, and of any burn-out cycle.

Nitriding and cracked ammonia

Alloy 330 resists nitrogen-bearing atmospheres well where oxygen is low, and it is widely used for cracked-ammonia equipment, nitriding retorts, and the associated flanges, tube sheets and fixtures. Nitrogen absorption still occurs over long campaigns and shows up as surface hardening and loss of room-temperature ductility on strip-down, so periodic inspection of highly loaded sections is worthwhile.

Where Alloy 330 should not be used

• Sulphur-bearing atmospheres. High nickel is a liability here: nickel-sulphide eutectics melt near 645 °C and attack rapidly. For sulphidising service, a lower-nickel, higher-chromium alloy is the correct choice.
• Molten salts and molten metals. Salt-pot service is possible for some chemistries and temperatures but must be evaluated case by case; neutral salts are more forgiving than cyanide or chloride-rich baths.
• Pressure-retaining parts needing ASME code allowable stresses at temperature. Use Alloy 800H/800HT, which is code-listed for that duty.
• Strongly reducing acids. This is a heat-resisting alloy, not a wet-corrosion alloy. In aqueous service its chromium gives useful oxidising-media resistance and its nickel gives chloride SCC immunity, but it is not a substitute for Hastelloy or Alloy 825 in acid.

How is Alloy 330 annealed and heat treated?

Alloy 330 is austenitic and cannot be hardened thermally. The only heat treatment that matters is the anneal that dissolves carbides, recrystallises the worked structure and restores corrosion resistance after hot working.

Alloy 330 vs 310S, 800H, 601 and 309S: which heat-resistant grade?

These grades overlap on paper and behave differently in service. The question to answer first is what is attacking the part: oxygen, carbon, nitrogen, sulphur, thermal cycles, or creep under load. Strength is rarely the deciding factor.

Alloy 330 vs 310S: the comparison that comes up most

310S carries more chromium (25% against 19%) and costs less, so on a specification sheet it looks like the stronger oxidation choice, and in a clean, steady, oxidising furnace it often is. Two things change the answer. 310S suffers sigma-phase embrittlement after long exposure around 650-870 °C, and a sigma-embrittled basket shatters when it is dropped on a quench-tank rim. Alloy 330's 35% nickel largely prevents sigma formation. And 310S carburises: in an endothermic atmosphere it absorbs carbon far faster than Alloy 330, and once carburised it is both brittle and no longer oxidation-resistant. Where the furnace runs a carbon potential, or where the hardware is quenched and cycled daily, Alloy 330 typically returns several times the campaign life for roughly 25% more material cost.

Alloy 330 vs 800H/800HT

The two grades have a similar nickel level and a similar maximum temperature, but they are used for different jobs. 800H/800HT is the creep grade: its controlled carbon and grain size give it published, code-listed time-dependent allowable stresses, which is what a reformer pigtail or a pressure-retaining header needs. Alloy 330 is the atmosphere grade: the silicon addition makes it the better choice in carburising gas and under severe thermal cycling, on parts where stress is low. For a pressure part at temperature, start from 800H. For unpressurised furnace hardware in a carbon-bearing gas, start from 330.

How do you forge, machine and weld Alloy 330?

Forging

Alloy 330 is heated uniformly to a starting temperature of 1,120-1,180 °C (2,050-2,150 °F) and finished above 950 °C (1,750 °F). Two things matter during the operation. Soak by section thickness rather than by clock, because the alloy's low thermal conductivity means a 300 mm block reaches temperature at the surface long before the centre, and forging a cold-centred billet tears it. And never let the finishing temperature drop into the 650-870 °C low-ductility band. Reduction of at least 4:1 from the ingot breaks down the as-cast structure; for seamless rolled rings the pierced blank is expanded on a radial-axial mill so that grain flow follows the circumference. After the last blow, cool as quickly as practical and give the piece a full anneal at 1,020-1,120 °C.

Machining

Machining behaviour resembles a tough austenitic stainless steel with a work-hardening rate to match. The practical rules:

• Sharp, positive-rake carbide tooling; change inserts at the first sign of edge rounding rather than running them out.
• Turning speeds of roughly 20-40 m/min with coated carbide; heavy, positive, uninterrupted feed of 0.15-0.40 mm/rev.
• Never dwell. A tool that stops feeding while still in contact glazes the surface and work-hardens a layer the next pass has to cut through.
• Rigid setups and flood coolant. The low thermal conductivity concentrates heat at the cutting edge rather than carrying it away in the chip.
• Remove the scale before machining. The oxide formed at forging and annealing temperature is hard and abrasive, and it will destroy an insert edge in a single pass.

Welding

Alloy 330 is welded by GTAW, SMAW and plasma-arc processes; GTAW gives the best results where corrosion resistance matters. Practice points:

• Weld in the annealed condition, with the joint clean and free of scale, grease and marking crayon. Grind a zone roughly 25 mm each side of the joint back to bright metal.
• Keep interpass temperature below 150 °C (300 °F).
• Neither preheat nor post-weld heat treatment is normally required, since most furnace hardware runs as-welded.
• Filler: a matching high-silicon 330-type filler for equivalent atmosphere resistance, or a nickel-base filler such as ERNiCr-3 / ENiCrFe-3 where higher weld-metal creep strength is wanted. State which one your specification requires, because they do not perform identically in a carburising gas.
• Alloy 330 welds readily to dissimilar metals, which is how most retort assemblies mix a forged flange with a fabricated body.

Where is Alloy 330 used?

The applications below share the same conditions: a hot, carbon- or nitrogen-bearing atmosphere, repeated heating and cooling, and low applied stress.

Alloy 330 production capability at Jiangyin Jiangnan Metal

Jiangyin Jiangnan Metal Co., Ltd. operates an open-die forging and ring-rolling plant in Jiangyin, Jiangsu Province, China, employing approximately 460 people including 9 senior engineers and 32 intermediate engineers. Alloy 330 is produced on the same equipment used for the rest of our nickel-alloy and heat-resistant range, including Alloy 800H, Inconel 601 and Inconel 600.

Standards, testing and certification

Alloy 330 orders at Jiangyin Jiangnan Metal Co., Ltd. are produced and certified against the specifications below. For forgings the chemistry specification is normally ASTM B511 or B512 (or AMS 5716 where an aerospace-quality call-out is required), and the inspection-document type is normally EN 10204 3.1.

• UNS N08330
• ASTM B511 / ASME SB-511
• ASTM B512 / ASME SB-512
• ASTM B536 / ASME SB-536
• ASTM B535 / ASME SB-535
• ASTM B710
• ASTM B366
• AMS 5716
• AMS 5592
• DIN 1.4864
• JIS SUH 330
• EN 10204 3.1
• EN 10204 3.2
• EN 10228-3 (UT)
• SEP 1921 (UT)
• ASTM A388 (UT)
• ASTM E112 (grain size)
• ISO 9001:2015

What appears on the certificate

• Heat number, and full ladle plus product chemical analysis including nickel, chromium and silicon
• Melting route (EAF + VOD + ESR, or VIM + VAR where specified)
• Mechanical test results (tensile, yield, elongation, hardness) on coupons from the delivered heat
• Heat-treatment records: annealing temperature, hold time, quench medium and cooling method
• Ultrasonic examination report to the ordered standard and acceptance class
• Dimensional inspection report
• ASTM E112 grain size, where specified. Recommended for parts with a creep-limited life
• Cross-listed equivalent designations (UNS N08330 / AISI 330 / ASTM B511 / DIN 1.4864 / SUH 330)

Quality gates and non-conformance handling

Every Alloy 330 order passes six mandatory hold points at which production cannot continue without QA sign-off: raw-material chemistry verification, forging temperature compliance, post-forging ultrasonic examination, heat-treatment chart approval, mechanical test acceptance, and final NDE plus dimensional inspection. Customer-witnessed hold points can be added at no charge. Any out-of-specification finding raises a formal non-conformance report within 24 hours, with root-cause analysis inside five working days and the proposed disposition sent to the customer before any rework is carried out.

How to specify an Alloy 330 forging order

An Alloy 330 order needs one item that many grades do not: the service atmosphere. Chemistry alone does not tell the mill whether you want silicon at the top of the band for carburising duty, a controlled grain size for creep life, or a particular filler for a welded assembly. The steps below cover the points that most often cause disagreement on this grade.

Recommended drawing callout

Top 10 mistakes when ordering Alloy 330 forgings

1. Selecting on maximum temperature alone. Inconel 601 has a higher oxidation limit. Alloy 330 is chosen for the atmosphere and the cycle, not for the peak number.
2. Assuming 1.4864 and N08330 are identical. Chromium and silicon bands differ. Nominate one designation as the acceptance criterion.
3. Using it in sulphur-bearing gas. Nickel-sulphide eutectics melt near 645 °C. High nickel is a liability here, not an asset.
4. Expecting ASME code allowable stresses at temperature. For pressure parts, 800H/800HT is the code-listed grade.
5. Accepting a rolled-and-welded plate ring in place of a forged ring. The weld and the plate's mid-thickness are where the thermal-fatigue crack starts.
6. Forming or straightening between 650 and 870 °C. Intergranular tearing in the low-ductility band.
7. Designing clearances cold. At 950 °C a 2 m fixture grows roughly 30 mm on diameter. Use the growth calculator.
8. Leaving grain size unspecified on creep-limited parts. Unlike 800H, this grade has no built-in grain-size rule; if you need it, say so.
9. Specifying magnetic particle inspection. Alloy 330 is austenitic and non-magnetic, so MT will not work. Specify dye penetrant.
10. Not stating the welding filler on fabricated assemblies. A matching high-silicon filler and a nickel-base filler behave differently in carburising gas.

Glossary

Alloy 330

Austenitic nickel-iron-chromium-silicon heat-resistant alloy, nominally 35% Ni, 19% Cr, 1.2% Si, balance Fe. UNS N08330, AISI 330, DIN 1.4864.

UNS N08330

Unified Numbering System designation for the Alloy 330 chemistry. The generic, brand-free name to use on purchase orders.

Carburisation

Absorption of carbon from a hot process gas into the alloy, where it precipitates as chromium carbides. The result is loss of ductility and loss of the chromium that was maintaining the protective oxide.

Green rot

Internal attack in atmospheres that alternate between carburising and oxidising, in which chromium carbides form and are then oxidised. Named for the green colour of the chromium oxide on the fracture face.

Nitriding

Absorption of nitrogen from ammonia-bearing or nitrogen-rich atmospheres at temperature, producing surface hardening and embrittlement.

Sigma phase

A brittle iron-chromium intermetallic that precipitates in austenitic stainless steels after long exposure around 650-870 °C. High nickel content, as in Alloy 330, strongly suppresses it.

Scale adhesion

The tendency of the surface oxide to remain attached through heating and cooling cycles. Adherent scale protects; spalling scale exposes fresh metal on every cycle and consumes the section.

Thermal fatigue

Cracking driven by the stress of repeated heating and cooling rather than by applied load. The usual life-limiting mechanism for furnace fixtures.

Creep

Slow, permanent deformation under stress at temperature. Above roughly 650 °C, creep and stress-rupture data govern design, not room-temperature yield strength.

Seamless rolled ring

A ring produced by piercing a forged billet and expanding it on a radial-axial ring mill, giving continuous circumferential grain flow and no weld, and more resistant to thermal fatigue than a rolled-and-welded plate ring.

Open-die forging

Hot working between flat or simply shaped dies, with the workpiece manipulated between blows. The route for large shafts, blocks, discs and hollows where single-piece size matters more than repeatability.

ESR

Electroslag remelting. A secondary melting process that refines inclusion content and produces a directionally solidified ingot well suited to forging.

VOD

Vacuum oxygen decarburisation. A secondary refining step that lowers carbon and dissolved gases. This matters here because the carbon ceiling is 0.08% and service adds more.

EN 10204 3.1 / 3.2

Inspection document types. 3.1 is a mill certificate issued by the manufacturer's own independent inspection department; 3.2 is countersigned by an independent third party nominated by the purchaser.

ASTM E112 grain size

The standard method for measuring average grain size. Coarser grain generally improves creep life; finer grain improves toughness and ductility.

Mean coefficient of thermal expansion

The average expansion per degree between room temperature and a stated upper temperature, as distinct from the instantaneous coefficient at one temperature. Datasheet figures, including those in Table 6, are mean values.

Frequently asked questions: Alloy 330 / UNS N08330

Technical references

Chemistry, physical-property, heat-treatment and fabrication data on this page are drawn from the published standards and engineering references below. Test results reported on our material certificates are independent and traceable to calibrated laboratory equipment.

1. ASTM B511 / B511M, Standard Specification for Nickel-Iron-Chromium-Silicon Alloy Bars and Shapes, ASTM International, West Conshohocken, PA.
2. ASTM B512, Standard Specification for Nickel-Chromium-Silicon Alloy (UNS N08330) Billets and Bars for Reforging, ASTM International.
3. ASTM B535, Standard Specification for Nickel-Iron-Chromium-Silicon Alloys (UNS N08330 and N08332) Seamless Pipe and Tube, ASTM International.
4. ASTM B536, Standard Specification for Nickel-Iron-Chromium-Silicon Alloys (UNS N08330 and N08332) Plate, Sheet, and Strip, ASTM International.
5. ASTM B710, Standard Specification for Nickel-Iron-Chromium-Silicon Alloy Welded Pipe, ASTM International.
6. ASTM B366, Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings, ASTM International.
7. SAE AMS 5716, Nickel-Iron-Chromium Alloy Bars, Wire, and Forgings, SAE International.
8. SAE AMS 5592, Nickel-Iron-Chromium Alloy Sheet, Strip, and Plate, SAE International.
9. ASME Boiler and Pressure Vessel Code, Section II Part B, specifications SB-511, SB-512, SB-535 and SB-536.
10. DIN EN 10095, Heat resisting steels and nickel alloys, including material 1.4864 (X12NiCrSi35-16).
11. JIS G 4311, Heat-resisting steel bars, grade SUH 330, Japanese Industrial Standards Committee.
12. EN 10204:2004, Metallic products: Types of inspection documents, CEN, Brussels.
13. EN 10228-3, Non-destructive testing of steel forgings, Part 3: Ultrasonic testing, CEN.
14. SEP 1921, Ultrasonic testing of steel forgings, Stahl-Eisen-Prüfblatt.
15. ASTM A388 / A388M, Standard Practice for Ultrasonic Examination of Steel Forgings, ASTM International.
16. ASTM E112, Standard Test Methods for Determining Average Grain Size, ASTM International.
17. ASM Handbook, Volume 1: Properties and Selection: Irons, Steels, and High-Performance Alloys, ASM International. Sections on heat-resistant alloys and elevated-temperature corrosion.
18. ASM Specialty Handbook: Heat-Resistant Materials, J.R. Davis (ed.), ASM International. Carburisation, nitridation and cyclic-oxidation behaviour.
19. ASM Specialty Handbook: Nickel, Cobalt and Their Alloys, J.R. Davis (ed.), ASM International.
20. Published producer datasheets for UNS N08330 (Rolled Alloys, Special Metals, Sandmeyer Steel and others) for typical physical and mechanical property values.

Standards cited are the revisions known to us at the time of the last page review. For procurement, always reference the revision in force at the contract date. All trademarks referenced belong to their respective owners.

Related grades and forged products

• AISI 330 forgings (same grade, legacy name)
• Incoloy 800H / N08810
• Incoloy 800HT / N08811
• Incoloy 800 / N08800
• Inconel 601 / N06601
• Inconel 600 / N06600
• Inconel 617 / N06617
• Haynes 230 / N06230
• Alloy 602 CA / N06025
• Hastelloy X / N06002
• Multimet N155
• Incoloy DS
• Forged & rolled rings
• Forged disks
• Forged tubes
• Forged spindles
• Open die forgings
• Forged rolls

Cite this page

This datasheet is maintained by the metallurgical engineering team at Jiangyin Jiangnan Metal Co., Ltd. and is free to quote, reference or link to. If you use the data in a specification, a report or an article, please attribute it as follows.

Jiangyin Jiangnan Metal Co., Ltd. (2026). Incoloy Alloy 330 / UNS N08330 / AISI 330 Forging Parts: Technical Datasheet and Manufacturing Guide. Jiangyin, Jiangsu, China. Retrieved from https://www.steelforgepieces.com/Nickel-Alloy/INCOLOY-ALLOY-330.html. Last updated 19 August 2026.

Source of record: Jiangyin Jiangnan Metal Co., Ltd., open-die forging factory, No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China · +86-189-2135-9659 · sales@steelforgepieces.com · www.steelforgepieces.com