Seamless rolled rings
Radial-axial ring rolled from a pierced and upset billet, giving continuous circumferential grain flow.
OD 200–2,500 mm · wall 20–300 mm · height 20–600 mmDefinition
What is Alloy 693?
Alloy 693 (UNS N06693) is a wrought nickel-chromium-aluminium alloy with a niobium addition, containing 27.0–31.0 % chromium, 2.5–4.0 % aluminium, 2.5–6.0 % iron and 0.5–2.5 % niobium with nickel as the balance. A typical heat runs about 60.5 % Ni, 29 % Cr and 3.1 % Al. It was developed for service in metal dusting environments, and gives the highest resistance to that mechanism of any conventional wrought nickel alloy.
It is a single-phase, solid-solution alloy supplied in the annealed condition. Density is 7.77 g/cm³ and the melting range is 1317–1367 °C.
Alloy 693 has the same high chromium content as Alloy 690 and shares its resistance to oxidation and sulfidation. The difference is the aluminium addition, about 3.1 % in a typical heat. Aluminium forms an alumina-rich surface film that carbon does not readily penetrate, and carbon ingress is the mechanism behind metal dusting. This is why Alloy 693 is used in carburising, reducing atmospheres where Alloy 690 and Alloy 601 are attacked.
Alloy 693 is normally specified in one of three cases: an existing Alloy 601, 602CA, 690 or Incoloy 800 part is pitting and losing section in a CO/H₂ atmosphere; a new syngas, hydrogen or ammonia unit is designed with metal dusting as a known risk; or a waste-to-energy plant needs material that survives chloridation and sulfidation above 700 °C. Where the service does not involve carburisation, a lower-cost grade will usually do the job.
The alloy was originated by Special Metals Corporation, is sold under the trade name Inconel 693, and is protected by US Patent 4,882,125. We supply and certify it under its UNS designation, N06693.
Alloy 693 is not a precipitation-hardening alloy. It is supplied annealed, and there is no strengthening ageing cycle for this grade. A specification calling for solution treatment plus ageing on N06693 has been written for a different alloy family, such as 718, 725 or X-750.
Last reviewed 13 August 2026 by the technical sales team, Jiangyin Jiangnan Metal Co., Ltd.
N06693 / N06690 / N06601 / N06617
Alloy 693 vs 690, 601 and 617
All four are chromium-bearing nickel alloys for high-temperature service. Alloy 693 is selected when carburisation or metal dusting governs, Alloy 690 for oxidising acids, Alloy 601 for general oxidation at lower cost, and Alloy 617 when creep strength is the design driver.
| Property | Alloy 693 | Alloy 690 | Alloy 601 | Alloy 617 |
|---|---|---|---|---|
| UNS | N06693 | N06690 | N06601 | N06617 |
| Chromium, % | 27–31 | 27–31 | 21–25 | 20–24 |
| Aluminium, % | 2.5–4.0 | — | 1.0–1.7 | 0.8–1.5 |
| Other key addition | Nb 0.5–2.5 | Fe 7–11 | Fe balance | Co 10–15, Mo 8–10 |
| Metal dusting resistance | Highest | Moderate | Moderate | Moderate |
| Creep-rupture strength | Above 690 and 601 | Baseline | Baseline | Highest |
| Oxidising acid service | Weaker than 690 | Best of the four | Moderate | Moderate |
| Typical use | Syngas, reformers, burner nozzles, waste-to-energy | Nuclear steam generators, nitric acid | Furnace parts, general oxidation | Gas turbines, creep-limited parts |
On a Larson-Miller basis the creep-rupture strength of Alloy 693 is higher than Alloy 690 and Alloy 601, and lower than Alloy 617. Where creep rather than carburisation is the design driver, Alloy 617 is normally the correct grade.
Weight percent · limiting composition
Chemical composition of UNS N06693
Alloy 693 contains 27.0–31.0 % Cr, 2.5–4.0 % Al, 2.5–6.0 % Fe and 0.5–2.5 % Nb, with 1.0 % Mn max, 1.0 % Ti max, 0.5 % Cu max, 0.5 % Si max, 0.15 % C max and 0.010 % S max. Nickel is the remainder, determined arithmetically by difference.
| Element | Limiting content, % | Typical heat, % |
|---|---|---|
| Nickel, Ni | Remainder | 60.5 |
| Chromium, Cr | 27.0 – 31.0 | 29.0 |
| Iron, Fe | 2.5 – 6.0 | 4.0 |
| Aluminium, Al | 2.5 – 4.0 | 3.1 |
| Niobium, Nb | 0.5 – 2.5 | 1.2 |
| Manganese, Mn | 1.0 max | — |
| Titanium, Ti | 1.0 max | — |
| Copper, Cu | 0.5 max | — |
| Silicon, Si | 0.5 max | — |
| Carbon, C | 0.15 max | — |
| Sulfur, S | 0.010 max | — |
Every heat is verified by optical emission spectrometry before the billet is cut, with PMI confirmation and heat-number transfer. The result is printed on the EN 10204 certificate against the heat number hard-stamped on the part. Where a client specification is tighter than the standard, we quote to the client specification.
Annealed · room temperature
Mechanical properties
Nominal room-temperature properties in the annealed condition. Forging properties are section-size dependent and are agreed on the purchase order.
| Product form | Tensile strength | Yield strength, 0.2 % offset | Elongation |
|---|---|---|---|
| Hot-rolled and annealed plate | 882.6 MPa / 128 ksi | 489.5 MPa / 71 ksi | 45 % |
| Cold-drawn and annealed tubing | 937.7 MPa / 136 ksi | 530.9 MPa / 77 ksi | 42 % |
Modulus of elasticity at temperature
| Temperature, °C | Modulus, GPa | Temperature, °F | Modulus, 10³ ksi |
|---|---|---|---|
| 21 | 196 | 70 | 28.5 |
| 100 | 194 | 200 | 28.2 |
| 200 | 188 | 400 | 27.3 |
| 300 | 180 | 600 | 26.6 |
| 400 | 172 | 800 | 25.6 |
| 500 | 165 | 1000 | 24.8 |
| 600 | 157 | 1400 | 23.2 |
| 700 | 148 | 1500 | 22.5 |
| 800 | 137 | — | — |
The metric and imperial columns are independent measurement series at different temperatures, not conversions of one another.
Thermal stability after long exposure
| Exposure | Yield strength | Tensile strength | Elongation | Charpy impact |
|---|---|---|---|---|
| 1000 h at 593 °C | 741 MPa | 1145 MPa | 31 % | 68.6 J / 40.5 ft-lb |
| 1000 h at 649 °C | 827 MPa | 1210 MPa | 28 % | 27.5 J / 16.3 ft-lb |
| 1000 h at 704 °C | 807 MPa | 1176 MPa | 31 % | 26.3 J / 15.5 ft-lb |
| 500 h at 760 °C | 700 MPa | 1103 MPa | 32 % | 39.0 J / 23.0 ft-lb |
Tensile and yield strength are retained after long exposure. Room-temperature impact toughness is not. Charpy energy falls by about 60 % after 1000 hours at 649 °C. Allow for this where impact toughness after service life is part of the design case.
Annealed condition
Physical properties
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.77 g/cm³ | 0.280 lb/in³ |
| Melting range | 1317 – 1367 °C | 2403 – 2493 °F |
| Modulus of elasticity, 21 °C | 196 GPa | 28.5 × 10³ ksi |
| Electrical resistivity | 1.168 µΩ·m | 702.7 Ω·circ mil/ft |
| Specific heat, 23 °C | 455 J/kg·°C | 0.109 Btu/lb·°F |
| Thermal conductivity, 23 °C | 9.1 W/m·°C | 64.3 Btu·in/ft²·h·°F |
| Thermal conductivity, 800 °C | 22.8 W/m·°C | 165.2 Btu·in/ft²·h·°F |
| Mean expansion, 26–100 °C | 13.04 µm/m·°C | 7.22 ×10⁻⁶ in/in·°F |
| Mean expansion, 26–800 °C | 16.32 µm/m·°C | 9.02 ×10⁻⁶ in/in·°F |
The reason this alloy exists
Metal dusting and high-temperature corrosion
Metal dusting is an aggressive form of carburisation that occurs in strongly carburising, reducing atmospheres such as carbon monoxide and hydrogen mixtures. Carbon enters the metal, forms carbides, and the surface disintegrates into a dust of metal particles, carbides and coke, producing pitting and rapid section loss. Failures can occur after short exposures. Alloy 693 resists the mechanism because its aluminium-rich oxide film blocks carbon ingress.
In CO-20 % H₂ at 621 °C, Alloy 693 records a lower mass-loss rate and shallower pitting than Alloy 690, Alloy 601 and Incoloy 800 over exposures extending to 18,000 hours.
Oxidation, carburisation and sulfidation
- Resists oxidation in air up to 1200 °C, and in moist air (air + 5 % water) at 1100 °C.
- Excellent carburisation resistance in H₂ / CH₄ / CO₂ media at 1000 °C.
- Good sulfidation resistance in both oxidising and reducing sulfur-bearing atmospheres.
- Performs well against oxide-rich media such as glass frit and fluxing compounds to 1100 °C.
Aqueous corrosion
| Environment | Alloy 693 | Alloy 690 |
|---|---|---|
| 10 % sulfuric acid, 60 °C | No attack | 0.495 (19.5) |
| 10 % HCl, room temperature | 0.071 (2.8) | 0.152 (6) |
| 10 % HCl, 45 °C | 1.003 (39.5) | 3.302 (130) |
| 15 % HCl, 45 °C | 3.048 (120) | 9.347 (368) |
| 10 % HNO₃ + 3 % HF, 60 °C | 0.699 (27.5) | 0.279 (11) |
| 65 % boiling nitric acid (Huey) | 0.254 (10) | 0.076 (3) |
In the last two rows Alloy 690 has the lower corrosion rate. Alloy 693 is not an upgrade in oxidising acid service. Grade selection should follow the actual service environment.
Degrees Celsius
The temperature window
Four temperature ranges govern how an Alloy 693 forging is processed and where it can serve: the precipitation band, the oxidation limit in air, the annealing window and the melting range.
Service and high-temperature corrosion
Below 538 °C
538–760 °C precipitation
Oxidation resistant to 1200 °C
Heat treatment and melting
Anneal 1010–1066 °C
Melts 1317–1367 °C
400 °C
600 °C
800 °C
1000 °C
1200 °C
1400 °C
| Threshold | Value | Why it matters |
|---|---|---|
| Precipitation band | 538 – 760 °C 1000 – 1400 °F |
Second phases precipitate during extended holds, reducing ductility and impact toughness. The alloy is used in service in this range, but fabrication should not dwell in it. |
| Anneal | 1010 – 1066 °C 1850 – 1950 °F |
Hold for a time commensurate with section thickness, then cool rapidly: air cooling or water quenching depending on section size. No ageing cycle follows. |
| Stress relief after welding | 950 – 1050 °C 1742 – 1922 °F |
2–3 hours then air cool, for welded or formed components entering 538–760 °C service. |
| Oxidation ceiling in air | 1200 °C 2192 °F |
Oxidation resistance in air is retained to this temperature. Above it the limit is strength rather than oxidation. |
Components held in the precipitation band for extended periods should be re-annealed before further forming or before entering service. This is the most common processing error with N06693.
Cross-reference
Standards and designations
Published product-form specifications for UNS N06693 are ASTM B166 (rod, bar and wire), ASTM B167 (seamless pipe and tube), ASTM B168 and B906 (plate and sheet), ASTM B516 (welded tube), and NACE RP0294 covering all forms.
| System | Designation |
|---|---|
| UNS | N06693 |
| Trade name | Inconel 693 (Special Metals) · Alloy 693 |
| Patent | US 4,882,125 |
| Rod, bar and wire | ASTM B166 / ASME SB-166 |
| Seamless pipe and tube | ASTM B167 / ASME SB-167 |
| Plate, sheet and strip | ASTM B168 · ASTM B906 |
| Welded tube | ASTM B516 |
| All forms | NACE RP0294 |
| Forgings | ASTM B564 practice, see note below |
| Ultrasonic testing | ASTM A388 · EN 10228-3 · SEP 1921 |
| Certification | EN 10204 type 3.1 (works) or 3.2 (third party) |
| Welding consumable | Filler Metal 53MD (near-matching) |
On ASTM B564: N06693 is not listed as a standard grade in every revision of ASTM B564 / ASME SB-564. We therefore forge to B564 practice with chemistry to ASTM B166 and mechanical acceptance agreed on the purchase order, or to your own company specification. State the governing document on the enquiry and we will confirm in writing what we can certify to before the order is placed.
Open-die and ring-rolled
Alloy 693 forged products and size range
We forge Alloy 693 into seamless rolled rings, discs, shafts, flanges, hollow bars, tube sheets, sleeves, bushings, valve bodies and custom near-net blanks. Everything is made to drawing. There is no standard catalogue and no tooling charge for open-die work.
Discs, blanks and tube sheets
Upset-forged discs for tube sheets, baffle plates, blind flanges, closure plates and machined covers.
OD up to 1,600 mm · thickness up to 500 mmShafts, bar and thermowell blanks
Drawn-down open-die shafts, spindles, stems and forged round bar with axial grain flow along the length.
Dia. 80–700 mm · length up to 6,000 mmFlanges and nozzles
Weld-neck, slip-on, blind and custom flanges to ASME B16.5, B16.47 or drawing, plus forged nozzle bodies.
½" to 48" · Class 150–2500Hollow bar, sleeves and ferrules
Trepanned or mandrel-forged hollows for bushings, sleeves, tube ferrules and valve seat rings. Reduces machining and scrap on an expensive alloy.
OD 120–800 mm · ID from 60 mmBlocks and near-net shapes
Rectangular and profiled blocks for valve bodies, burner nozzles, manifolds and machined weldments.
Single-piece weight 20 kg – 8 tSizes outside this envelope are often still possible. Forging reduction ratio is normally 4:1 or better; where a client specification states a minimum ratio it is recorded on the certificate. Minimum order is one piece.
Melt to certificate
How we make an Alloy 693 forging
The production sequence for an Alloy 693 forging, in order.
- Material procurementRemelted stock: ESR, or VIM + ESR where the specification or section size requires it. State the required melt route on the enquiry.
- Billet verificationChemistry confirmed by optical emission spectrometry, positive material identification and heat-number transfer before cutting.
- HeatingCharged into a computer-controlled furnace and soaked with a recorded thermocouple chart.
- ForgingOpen-die drawing, upsetting and piercing, or radial-axial ring rolling, with the forging reduction ratio recorded.
- Annealing1010–1066 °C, held for a time commensurate with section thickness, then cooled rapidly in air or water quenched depending on section size. No ageing cycle is applied.
- Rough machiningScale removed and surfaces prepared for ultrasonic examination.
- Non-destructive testingUltrasonic to ASTM A388, EN 10228-3 or SEP 1921; liquid penetrant to ASTM E165 where required.
- Mechanical testingTensile to ASTM E8/E8M or ASTM A370 on prolongations, hardness, grain size to ASTM E112 and impact to ASTM E23 on request.
- Certification and packingDimensional report, hard-stamped heat number and grade, EN 10204 3.1 works certificate or 3.2 countersigned by TÜV, BV, LRS, DNV or SGS. Seaworthy packing, export documents included.
Where it goes
Applications for Alloy 693 forgings
Alloy 693 forgings are used where carbon attacks metal: syngas and hydrogen plant, cracking and reforming service, and waste-to-energy above 700 °C, together with the pressure equipment around them.
Syngas, ammonia, methanol, hydrogen
- Reformer components and transfer-line hardware
- Thermowells and thermocouple sheaths
- Tube ferrules and baffle plates
- Valve bodies, seats and stems
- Refractory anchor supports
Waste-to-energy and biomass
- Service above 700 °C where fuel-ash corrosion, chloridation and sulfidation attack conventional materials
- Superheater wall protection in low-NOx plants, solid or as weld overlay
- Grate and support hardware
Burner nozzles and thermal processing
- Upgrade path from Alloy 601 and 602CA where low-sulfur fuel regulations introduced metal dusting
- Heat-treatment furnace internals and fixtures
- Equipment exposed to high chlorine or sulfur levels
Pressure equipment
- Forged flanges, tube sheets and nozzle forgings for heat exchangers
- Shell courses, covers and closures for reactors and columns
- Catalyst manufacturing equipment in high-sulfur service
High-temperature fuel cells
- Reformer sections where gas composition can induce metal dusting
- Manifolds and distribution hardware
General process industry
- Pump shafts, sleeves and bushings in carburising service
- Rolls, rings and rotating parts for continuous furnace lines
- Machined weldments and near-net blanks to drawing
Downstream
Welding and machining Alloy 693
Welding
Join in the annealed condition. GTAW and GMAW are the usual processes, with argon or argon-helium shielding; preheat is not normally required. The near-matching consumable is Filler Metal 53MD, suitable for similar-metal joints in light to moderate sections. For heavier or highly stressed joints, and for dissimilar-metal joints, Filler Metal 52 or 617 can carry the structural portion, with the process-side surface overlaid with two layers of 53MD or 72.
Weldments for service above 760 °C do not normally need post-weld heat treatment. Welded or formed components going into 538–760 °C service should be stress relieved 2–3 hours at 950–1050 °C and air cooled. If a component is to be pre-oxidised before service, do it after welding so the weld metal develops the same protective film as the parent material.
Machining
Forming and machining characteristics resemble Alloy 600 and Alloy 690. The alloy work-hardens, so use a rigid setup, sharp positive-rake carbide tooling, positive feed, no dwelling in the cut and flood coolant. Where the finished part carries a large machining allowance, we can rough-machine before final annealing.
Forming
Avoid extended exposure between 538 and 760 °C during forming and intermediate processing. Components held in that range for long periods must be re-annealed before further forming or before entering service. Loss of ductility from this exposure can cause cracking during later forming.
RFQ
How to order Alloy 693 forgings
Send a drawing or the finished dimensions to sales@steelforgepieces.com for a price within 24 working hours. There is no minimum order value on open-die work; single prototype pieces are quoted as well as production batches.
What to include in your enquiry
- Grade and governing specification: Alloy 693 / UNS N06693, or your own company specification
- Drawing or finished dimensions, plus whether you want as-forged, rough-machined or finish-machined
- Quantity and required delivery date
- Certificate type: EN 10204 3.1, or 3.2 with the third party you prefer
- NDT scope and acceptance class: ASTM A388 criteria, EN 10228-3 class or SEP 1921 group
- Melt route requirement, if your specification states one
- Marking, preservation and packing requirements
- Destination port and Incoterm
| Item | Detail |
|---|---|
| Minimum order | One piece, no MOQ on open-die forgings |
| Quotation time | Within 24 working hours of receiving the drawing |
| Lead time | Typically 30–45 days from order confirmation, depending on section size, melt-stock availability and NDT scope |
| Condition supplied | Annealed; as-forged, rough-machined or finish-machined |
| Documentation | EN 10204 3.1 or 3.2, NDT reports, dimensional report, heat-treatment charts |
| Terms and shipping | EXW, FOB, CIF or DDP from Shanghai / Ningbo |
Questions we actually get asked
Frequently asked questions
What is Alloy 693 (UNS N06693)?
Alloy 693, designated UNS N06693, is a wrought nickel-chromium-aluminium alloy with a niobium addition. Limiting composition is 27.0–31.0 % chromium, 2.5–4.0 % aluminium, 2.5–6.0 % iron and 0.5–2.5 % niobium with nickel as the balance; a typical heat runs about 60.5 % Ni, 29 % Cr and 3.1 % Al. It is a single-phase, solid-solution alloy supplied in the annealed condition, developed to resist metal dusting and high-temperature corrosion in chemical and petrochemical service.
Why is Alloy 693 chosen over Alloy 690 or Alloy 601?
Alloy 693 shares the high chromium content of Alloy 690, which gives oxidation and sulfidation resistance, but adds about 3.1 % aluminium. The aluminium forms a protective alumina scale that resists carbon ingress, so Alloy 693 offers markedly better resistance to metal dusting and carburisation than Alloy 690, Alloy 601 or Incoloy 800 in reducing CO/H₂ atmospheres. In oxidising acid service such as boiling nitric acid, Alloy 690 has the lower corrosion rate. Grade selection should follow the service environment.
What is metal dusting?
Metal dusting is an aggressive form of carburisation that occurs in strongly carburising, reducing atmospheres such as carbon monoxide and hydrogen mixtures. Carbon enters the metal, forms carbides and causes the surface to disintegrate into a dust of metal particles, carbides and coke, producing pitting and rapid section loss. Failures can occur after short exposures. Alloy 693 resists it because the aluminium-rich oxide film blocks carbon ingress.
What is the chemical composition of Alloy 693?
Limiting composition in weight percent: chromium 27.0–31.0, iron 2.5–6.0, aluminium 2.5–4.0, niobium 0.5–2.5, manganese 1.0 max, titanium 1.0 max, copper 0.5 max, silicon 0.5 max, carbon 0.15 max, sulfur 0.010 max, with nickel as the remainder determined by difference.
What is the density and melting range of Alloy 693?
The density of Alloy 693 is 7.77 g/cm³ (0.280 lb/in³) and the melting range is 1317–1367 °C (2403–2493 °F). Electrical resistivity is 1.168 µΩ·m and the modulus of elasticity at room temperature is 196 GPa (28.5 × 10³ ksi).
What heat treatment does an Alloy 693 forging need?
Alloy 693 is a single-phase solid-solution alloy, so it is annealed, not solution treated and aged. Anneal at 1010–1066 °C (1850–1950 °F), hold for a time appropriate to section thickness, then cool rapidly in air or water quench depending on section size. A precipitation ageing cycle for N06693 belongs to a different alloy family, such as Alloy 718.
Why must Alloy 693 avoid prolonged exposure between 538 and 760 °C during fabrication?
Alloy 693 can precipitate second phases when held between 538 and 760 °C (1000–1400 °F), which lowers room-temperature ductility and impact toughness. The alloy is still used in service in that range, but extended dwell during forming, welding or intermediate processing must be avoided, and components that have been exposed should be re-annealed before further forming or before entering service.
Which standards and specifications cover UNS N06693?
Published product-form specifications for UNS N06693 are ASTM B166 for rod, bar and wire; ASTM B167 for seamless pipe and tube; ASTM B168 and ASTM B906 for plate and sheet; ASTM B516 for welded tube; and NACE RP0294 covering all forms. Open-die forgings are normally ordered to ASTM B564 / ASME SB-564 practice with chemistry to ASTM B166 and mechanical properties agreed on the purchase order, because N06693 is not listed as a standard grade in every revision of B564.
Is Alloy 693 weldable and which filler metal is used?
Yes. Alloy 693 welds well by GTAW and GMAW using argon or argon-helium shielding, with no preheat normally required, and is best joined in the annealed condition. The near-matching consumable is Filler Metal 53MD for light to moderate sections. Heavier or highly stressed joints may use Filler Metal 52 or 617 for the structural pass, overlaid on the process side with two layers of 53MD or 72. Components for intermediate service temperatures should be stress relieved 2–3 hours at 950–1050 °C and air cooled.
Is Alloy 693 the same thing as Inconel 693?
They refer to the same UNS N06693 chemistry. INCONEL is a registered trademark of the Special Metals Corporation group of companies, which originated the alloy and holds US Patent 4,882,125. Jiangyin Jiangnan Metal Co., Ltd. is an independent forging manufacturer and is not affiliated with, endorsed by or a licensee of Special Metals; material is supplied and certified as UNS N06693 / Alloy 693.
What testing and certificates are supplied with Alloy 693 forgings?
Standard scope covers chemical analysis by optical emission spectrometry with PMI verification, room-temperature tensile testing to ASTM E8 or ASTM A370, hardness, dimensional inspection and ultrasonic testing to ASTM A388, EN 10228-3 or SEP 1921 with the acceptance class stated on the order. Grain size to ASTM E112, liquid penetrant to ASTM E165 and impact testing to ASTM E23 are available on request. Certificates are issued to EN 10204 type 3.1, or type 3.2 countersigned by TÜV, BV, LRS, DNV or SGS.
Where is Alloy 693 used?
Main applications are syngas production for ammonia, methanol and hydrogen, where components such as reformer tubes, thermowells, thermocouple sheaths, tube ferrules, baffle plates and valve parts suffer metal dusting; waste-to-energy and biomass incinerators above 700 °C; superheater wall protection in low-NOx plants; burner nozzles upgraded from Alloy 601 or 602CA; catalyst manufacturing with high sulfur levels; and high-temperature fuel cell reformers.
What size Alloy 693 forgings can be produced?
Jiangyin Jiangnan Metal produces Alloy 693 seamless rolled rings from 200 to 2,500 mm outside diameter, discs to 1,600 mm diameter, shafts to 700 mm diameter and 6,000 mm long, and single pieces from about 20 kg up to 8 tonnes. Everything is forged to drawing; there is no standard catalogue and no tooling charge for open-die work. Minimum order is one piece.
Where can I buy Alloy 693 forged rings, flanges and discs?
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory at No. 1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, producing Alloy 693 forgings and exporting worldwide. Email sales@steelforgepieces.com or call +86 189-2135-9659 with a drawing for a quotation within one working day.
Cite this page
Jiangyin Jiangnan Metal Co., Ltd. (2026). Alloy 693 Forgings (UNS N06693): Composition, Properties, Standards and Manufacturing. Jiangyin, Jiangsu, China. Retrieved from https://www.steelforgepieces.com/Nickel-Alloy/ALLOY-693.html
Composition, physical constants, tensile and modulus data, thermal-stability data, aqueous corrosion rates, heat treatment and welding guidance follow the alloy originator's published technical bulletin (Special Metals, SMC-043) and the governing ASTM specifications. Data is published for engineering selection; the mill certificate supplied with your forging is the controlling document.
The factory behind the data
About Jiangyin Jiangnan Metal Co., Ltd.
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory in Jiangyin, Jiangsu Province, China, producing forged rings, rolled rings, discs, shafts, flanges and blocks in carbon steel, alloy steel, tool steel, stainless steel and nickel alloys including Alloy 693, Inconel, Incoloy, Hastelloy, Monel and Nimonic grades.
We forge to drawing rather than to catalogue: no tooling charge and no minimum order quantity, whether the order is a single prototype ring for a reformer trial or a repeat production batch. The works is in the Yangtze River Delta forging cluster, about two hours from Shanghai port.
The technical content on this page reflects our own production practice for UNS N06693 (melt stock, forging window, annealing cycle and inspection scope) together with the alloy originator's published data and the requirements of the governing ASTM specifications. Data points not listed here are available on request.