Werkstoff 1.4943 · X5NiCrTi26-15
1.4943 Forgings: Seamless Rolled Rings, Flanges, Shafts and Bars
Open-die forged and ring-rolled components in grade 1.4943, an iron-nickel-chromium precipitation-hardening superalloy of the A-286 family. Made to drawing at Jiangyin Jiangnan Metal Co., Ltd., Jiangyin, China, with EN 10204 3.1 or 3.2 certification.
Summary
1.4943 is the German Werkstoff number for X5NiCrTi26-15, an iron-based precipitation-hardening high-temperature alloy in the A-286 (UNS S66286) family. It contains 24.0 to 27.0 % nickel, 13.5 to 16.0 % chromium and 1.90 to 2.35 % titanium, and it is hardened by a gamma prime Ni3(Ti,Al) phase. The grade retains high strength and creep resistance at temperatures where standard austenitic stainless steels do not.
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China. The works forges 1.4943 into seamless rolled rings, flanges, shafts, round bars, discs, sleeves, bushings, tube sheets and forged pipes, all made to customer drawing. The alloy is melted by the EAF + VOD + ESR route, ultrasonically tested to EN 10228-3, SEP 1921 or ASTM A388, and certified to EN 10204 3.1 or 3.2. Quotations are issued against a drawing or size list sent to sales@steelforgepieces.com or 0086-189-2135-9659.
- Werkstoff No.
- 1.4943
- EN designation
- X5NiCrTi26-15
- Alloy family
- A-286 type
- Base
- Fe-Ni-Cr, PH
- Melting route
- EAF + VOD + ESR
- Delivery condition
- Sol. annealed + aged
- Rm (D up to 300 mm)
- 900-1200 MPa
- Rp0.2
- 600 MPa min.
- Forms forged in-house
- Seamless rolled rings, forged rings, flanges, shafts, round bars, discs and disks, sleeves, bushings, tube sheets, forged pipes and tubes, gears, spindles, valve bodies, seat rings and stems, nozzles, crankshafts, eccentric shafts
- Testing and certification
- UT to EN 10228-3, SEP 1921 or ASTM A388. Certificates to EN 10204 3.1 or 3.2 (third party)
- Manufacturer
- Jiangyin Jiangnan Metal Co., Ltd., No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China. 0086-189-2135-9659, sales@steelforgepieces.com
01 What is 1.4943?
1.4943 is a precipitation-hardening iron-nickel-chromium high-temperature alloy designated X5NiCrTi26-15 under the European material numbering system.
Unlike a plain austenitic stainless steel, 1.4943 is strengthened by a fine gamma prime Ni3(Ti,Al) precipitate formed during ageing. In the aged condition a 1.4943 forging holds a tensile strength of 900 to 1200 MPa and useful creep resistance at temperatures at which 304 and 316 have already softened. Titanium at 1.90 to 2.35 % is the hardening element. Molybdenum at 1.0 to 1.5 % adds solid-solution strength, vanadium refines the structure, and boron at 0.001 to 0.01 % improves stress-rupture life and hot workability.
The alloy is iron-based rather than nickel-based, so its raw material cost is lower than a comparable nickel-base superalloy. For that reason it is specified for turbine discs, high-temperature fasteners, turbocharger parts and hot-gas-path hardware in place of a full nickel grade.
Why 1.4943 is forged rather than cast or cut from plate
Open-die forging and ring rolling break down the as-cast structure and align the grain flow with the shape of the part. In a 1.4943 ring or disc this raises transverse ductility and impact toughness, closes internal porosity so that the part can meet a tight ultrasonic class, and removes the weld seams present in a rolled-and-welded ring. For rotating and pressure-retaining duty, a seamless rolled ring in 1.4943 is usually the only acceptable route.
02 Designations and related grades
1.4943 appears under several names across standards and trade catalogues. The table lists the designations most often quoted on enquiries and drawings for this alloy family.
| System | Designation | Note |
|---|---|---|
| Werkstoff (EN/DIN) | 1.4943 | Primary material number |
| EN name | X5NiCrTi26-15 | Also cited as X4NiCrTi25-15 |
| Alloy family | A-286 type | Iron-base precipitation-hardening high-temperature alloy |
| Related Werkstoff | 1.4944, 1.4980 | X6NiCrTiMoVB25-15-2, same family with different element ranges |
| UNS (family) | S66286 | Alloy A-286 |
| AISI (family) | 660 | ASTM A453 Grade 660 bolting classes |
| Trade names | A-286, Incoloy A-286 | Trade names of the family rather than of 1.4943 specifically |
Note: these grades are close relatives, not drop-in substitutes. Element ranges, permitted heat treatments and acceptance criteria differ between the individual specifications. Jiangyin Jiangnan Metal Co., Ltd. forges to the exact specification and revision named on the purchase order rather than to a cross-reference table. If your drawing calls up 1.4943 and your customer specification calls up 1.4980, send us both and we will confirm in writing which one the heat can satisfy before the order is placed.
Other nickel and iron-base superalloys forged here
03 Chemical composition of 1.4943
Composition of the 1.4943 forging material supplied by Jiangyin Jiangnan Metal Co., Ltd., in weight percent. Iron is the balance.
| Element | Symbol | Content, wt. % | Function |
|---|---|---|---|
| Nickel | Ni | 24.0 - 27.0 | Stabilises the austenite matrix and forms the gamma prime hardening phase |
| Chromium | Cr | 13.5 - 16.0 | Oxidation and hot-corrosion resistance |
| Iron | Fe | Balance | Base element, keeps cost below a nickel-base superalloy |
| Titanium | Ti | 1.90 - 2.35 | Primary hardener, precipitates as gamma prime Ni3(Ti,Al) on ageing |
| Molybdenum | Mo | 1.0 - 1.5 | Solid-solution strengthening and creep resistance |
| Vanadium | V | 0.10 - 0.50 | Grain refinement and additional strength |
| Carbon | C | max 0.08 | Kept low to limit carbide formation at grain boundaries |
| Manganese | Mn | max 2.0 | Deoxidiser and sulphur control |
| Silicon | Si | max 1.0 | Deoxidiser |
| Aluminium | Al | max 0.35 | Deoxidiser, contributes to the gamma prime phase |
| Boron | B | 0.001 - 0.01 | Improves stress-rupture life and hot workability |
| Sulphur | S | max 0.030 | Residual, kept low for hot ductility |
Heat-specific analysis is reported on the EN 10204 3.1 or 3.2 certificate supplied with every 1.4943 forging. Ladle and product analysis are both available on request.
04 Mechanical properties of 1.4943
Room-temperature properties in the standard delivery condition, solution annealed and precipitation hardened, for bar and forgings up to 300 mm diameter or equivalent section.
| Property | Symbol | Value |
|---|---|---|
| Tensile strength | Rm | 900 - 1200 MPa |
| 0.2 % proof strength | Rp0.2 | 600 MPa min. |
| Elongation | A | longitudinal 16 % min., transverse 14 % min. |
| Impact energy (Charpy) | Av | longitudinal 56 J min., transverse 32 J min. |
| Reduction of area | Z | To specification, on request |
| Hardness | HB | To specification, on request |
The values above are acceptance minima for the standard condition. Larger sections, alternative ageing cycles and customer-specific acceptance criteria are quoted individually. Send the specification with your enquiry and the achievable properties will be confirmed before order.
Delivery condition and heat treatment
1.4943 forgings are normally supplied solution annealed and precipitation hardened. Solution treatment dissolves the titanium-rich phases into the austenite matrix, and controlled ageing then re-precipitates them as the fine gamma prime particles that carry the strength. Furnace charts are recorded against the heat number and issued with the certificate. Soak temperatures, holding times and quench media are agreed per order and per specification, because ageing cycles differ between DIN, ASTM A453 and customer standards.
05 1.4943 product forms and size range
Each item below is open-die forged or ring rolled to the customer drawing. There is no fixed catalogue. Send a drawing or a finished size and the forged size, allowance and weight will be calculated for you.
| Product form | Size range | Typical use |
|---|---|---|
| Seamless rolled rings | OD 200 - 3000 mm, height up to 1000 mm | Turbine casings, bearing races, flanged joints |
| Forged rings and sleeves | OD 100 - 2500 mm | Sleeves, bushings, spacer rings |
| Forged flanges | OD up to 3000 mm | Pressure vessels, heat exchangers, piping |
| Shafts and spindles | Dia. 60 - 800 mm, length up to 8000 mm | Rotors, drive shafts, eccentric shafts |
| Round bars | Dia. 20 - 800 mm | Fastener stock, machined components |
| Discs, disks and blanks | Dia. up to 2500 mm | Turbine wheels, valve blanks, blind flanges |
| Tube sheets | Dia. up to 3000 mm | Shell-and-tube heat exchangers |
| Forged pipes and tubes | Made to drawing | Hollow bodies, nozzles, cylinders |
| Single-piece weight | 10 kg - 20 000 kg | All forms |
Sizes outside this range are often possible. Please ask if your part falls outside it.
Machining condition
- As-forged with allowance. The lowest cost option, for customers who machine in house.
- Rough machined (proof machined). The usual choice for rings and discs, because a clean surface makes ultrasonic inspection more reliable.
- Finish machined to drawing. Supplied ready to fit, with a dimensional report.
06 Manufacturing route for 1.4943 forgings
1.4943 has a narrow hot-working window. Titanium and boron make it sensitive to overheating and to finishing temperature control. The route below is applied to every 1.4943 order.
- Melting by EAF, VOD and ESRElectric arc furnace melting, vacuum oxygen decarburisation refining, then electroslag remelting. ESR reduces segregation and non-metallic inclusions, which is required for large 1.4943 sections and for parts that must meet tight ultrasonic acceptance classes.
- Billet inspection and heat traceabilityEach billet carries a heat number that follows the part through every subsequent step and onto the certificate.
- Controlled heatingSlow, uniform soak to the forging temperature. Overheating a titanium-bearing alloy causes incipient melting at grain boundaries that no later heat treatment can repair.
- Open-die forging or ring rollingUpsetting and drawing on the open-die press to reach the specified forging ratio, or ring rolling for seamless rolled rings, so that the grain flow follows the contour of the finished part.
- Solution annealing and precipitation hardeningFurnace charts are recorded against the heat number and supplied with the certificate.
- Rough machiningProof machining removes scale and decarburised skin so that ultrasonic inspection is carried out on sound metal.
- TestingChemical analysis, tensile and impact testing, hardness, ultrasonic testing to EN 10228-3, SEP 1921 or ASTM A388, and dimensional inspection. PMI, MT, PT, intergranular corrosion tests and elevated-temperature tensile tests on request.
- Certification, marking, packing and shipmentEN 10204 3.1 or 3.2 certificate, hard-stamp or vibro-etch marking with heat and item number, fumigation-free wooden cases or steel pallets, shipped by sea or air from Shanghai.
07 Testing, NDT and certification
Testing scope and standards applied to 1.4943 forgings.
| Check | Standard | Supplied |
|---|---|---|
| Ultrasonic testing | EN 10228-3, SEP 1921, ASTM A388 | Standard, class agreed on order |
| Chemical analysis | Ladle and product analysis | Standard, on certificate |
| Tensile and impact test | EN ISO 6892-1, EN ISO 148-1 | Standard, on certificate |
| Hardness | Brinell or Rockwell | Standard |
| Material certificate | EN 10204 3.1 | Standard |
| Third-party certificate | EN 10204 3.2 | On request: TUV, BV, DNV, LR, ABS, SGS and similar |
| Magnetic particle and dye penetrant | ASTM E709, ASTM E165 | On request |
| PMI, grain size, IGC | ASTM E1476, ASTM E112, ASTM A262 | On request |
| Elevated-temperature tensile | EN ISO 6892-2 | On request |
Witness inspection by your own engineer or by an appointed agency can be arranged at any stage. Please state this at enquiry stage so that hold points are written into the production plan.
08 Applications for 1.4943 forgings
The applications below account for most of the 1.4943 orders placed with this factory.
| Industry | Typical 1.4943 components | Reason for the grade |
|---|---|---|
| Aero engines and industrial gas turbines | Turbine wheel discs, forged discs and blanks, nozzles, casing rings, spacers | High strength and creep resistance in the hot section at a lower cost than a nickel-base grade |
| Automotive and turbocharging | High-temperature fasteners, engine and manifold components, turbocharger parts | Retains preload and strength under repeated thermal cycling |
| Oil and gas, offshore and subsea | Subsea and deepwater production hardware, wellhead and Christmas tree components, forged bushings, sleeves and discs | Strength combined with corrosion resistance in high-pressure service |
| Pressure equipment | Forged flanges, tube sheets, forged pipes and tubes, shells for air receivers | Seamless forged bodies with no weld seam, certified to EN 10204 3.1 or 3.2 |
| Heat exchangers | Shell-and-tube tube sheets, forged nozzles, channel flanges | Dimensional stability and strength at operating temperature |
| Valves | Valve bodies, valve blocks, seat rings, stems and discs for ball, gate, globe, check and plug valves and strainers | Forged bodies meet tight UT classes and resist galling at temperature |
| Power transmission | Gears, shafts, spindles, round bars and rolls for gearboxes, compressors and turbines | Grain flow follows the load path, which improves fatigue life over a machined bar |
| Furnaces and heat treatment plant | Forged rolls, retort parts, fixtures, manifolds | Resists distortion and oxidation through repeated heating cycles |
| Nuclear engineering | Forged rings, flanges, shafts and pipes | Full traceability, third-party witnessed testing, tight NDT acceptance |
| Process and chemical plant | Crystalliser parts, processing-unit components, forged wheels, crankshafts, eccentric shafts | Long service life in hot, mechanically loaded duty |
Related pages: forged pipes, forged round bars, forged products overview, all nickel alloy forgings.
09 Frequently asked questions about 1.4943
What is material 1.4943?
1.4943 is the German Werkstoff number for X5NiCrTi26-15, an iron-nickel-chromium precipitation-hardening high-temperature alloy of the A-286 family. It contains 24.0 to 27.0 % nickel, 13.5 to 16.0 % chromium and 1.90 to 2.35 % titanium, with molybdenum, vanadium and boron additions. It is used where high strength must be retained at elevated temperature.
Is 1.4943 the same as A-286?
1.4943 (X5NiCrTi26-15) belongs to the A-286 alloy family and is often cross-referenced with Alloy A-286, UNS S66286 and AISI 660. It is not identical to 1.4980 or 1.4944, because element ranges and permitted heat treatments differ between those specifications. Jiangyin Jiangnan Metal Co., Ltd. forges to the specification named on the purchase order rather than to a cross-reference table.
Which product forms can be forged in 1.4943?
Jiangyin Jiangnan Metal Co., Ltd. forges 1.4943 into seamless rolled rings, forged flanges, shafts, round bars, discs and disks, sleeves, bushings, tube sheets, forged pipes and tubes, gears, spindles, valve bodies, valve seat rings, nozzles, crankshafts and eccentric shafts. All items are made to the customer drawing or size list.
What testing and certification is supplied with 1.4943 forgings?
1.4943 forgings are ultrasonically tested to EN 10228-3, SEP 1921 or ASTM A388 as agreed on the order. Material certificates are issued to EN 10204 3.1, or to EN 10204 3.2 with third-party witness such as a classification society or an inspection agency. Chemical analysis, mechanical test results, heat treatment records and heat number traceability are included.
How is 1.4943 melted?
Jiangyin Jiangnan Metal Co., Ltd. supplies 1.4943 melted by the EAF plus VOD plus ESR route: electric arc furnace melting, vacuum oxygen decarburisation refining, then electroslag remelting. ESR reduces segregation and non-metallic inclusions, which is required for large-section forgings and for parts that must meet tight ultrasonic acceptance classes.
What is the typical heat treatment of 1.4943 forgings?
1.4943 is normally supplied solution annealed and precipitation hardened. In that condition, and for bar or forging sections up to 300 mm diameter, tensile strength Rm is 900 to 1200 MPa, yield strength Rp0.2 is 600 MPa minimum, elongation is 16 % minimum longitudinal and 14 % minimum transverse, and impact energy Av is 56 J minimum longitudinal and 32 J minimum transverse. Soak temperatures and times are agreed per order.
Where is 1.4943 used?
1.4943 forgings are used in gas turbine and aero-engine components, turbochargers, industrial furnaces and heat-treating equipment, nuclear engineering, pressure vessels and shell-and-tube heat exchangers, subsea and deepwater oil and gas production systems, wellhead and Christmas tree components, high-temperature fasteners and engine manifold parts, valve bodies and seat rings, and power transmission parts such as gears, shafts and spindles.
Who supplies 1.4943 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 that manufactures 1.4943 forgings to drawing. Enquiries: sales@steelforgepieces.com, telephone 0086-189-2135-9659.
What information is needed to quote a 1.4943 forging?
To quote a 1.4943 forging, send the grade and specification, the drawing or finished dimensions with machining allowance, the quantity, the required delivery condition and heat treatment, the ultrasonic acceptance class, the certificate type, and the destination port. Jiangyin Jiangnan Metal Co., Ltd. returns a price and lead time against that information.
Can 1.4943 forgings be supplied rough machined?
Yes. 1.4943 forgings are supplied as-forged with machining allowance, rough machined for ultrasonic inspection, or finish machined to drawing. Rough machining before final ultrasonic testing is normal practice on rings and discs because it improves the reliability of the inspection.
Request a quotation for 1.4943 forgings
Send a drawing or a finished size and we will quote price and lead time against it. Single prototype pieces are quoted on the same basis as production batches.
Include in your enquiry
- Grade and specification revision, for example 1.4943 or X5NiCrTi26-15
- Drawing, or finished dimensions plus machining allowance
- Quantity, and whether repeat orders are expected
- Delivery condition and required heat treatment
- Ultrasonic class to EN 10228-3, SEP 1921 or ASTM A388
- Certificate type, EN 10204 3.1 or 3.2, and any witness body
- Destination port and required delivery date
- Manufacturer
- Jiangyin Jiangnan Metal Co., Ltd.
- Works address
- No.1 Chengxiqiao Road, Zhouzhuang Town,
Jiangyin City, Jiangsu Province, China - Telephone, WhatsApp, WeChat
- 0086-189-2135-9659
- sales@steelforgepieces.com
- Quotation response
- Within 24 working hours
- Typical lead time
- 15 to 35 days after drawing approval
10 The manufacturer
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory located at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China. Jiangyin is in the Yangtze River delta, about two hours from the port of Shanghai, and most export shipments are made through Shanghai.
The works produces open-die forgings and seamless rolled rings in carbon steel, alloy steel, tool steel, stainless steel, and nickel-based and iron-based superalloys. Besides 1.4943, the grades forged regularly include Inconel 625, 706, 600, 601, 617, 690, 693 and X-750; Incoloy 800, 800H, 800HT, 825, 890, 901, 925, 926, 945 and A-286; Hastelloy B-2, B-3, C-4, C-22, C-276 and C-2000; Monel 400, K-500 and R-405; Nimonic 75, 80A, 90, 105, 115, 263 and 901; Waspaloy, Rene 41, Haynes 25, 188 and 230; and the precipitation-hardening stainless steels 17-4PH, 15-5PH, 17-7PH and PH13-8Mo.
Products are supplied against customer drawings with EN 10204 3.1 or 3.2 certification and ultrasonic testing to EN 10228-3, SEP 1921 or ASTM A388. Customers include pressure equipment fabricators, valve makers, turbine and compressor builders, and oil and gas equipment manufacturers in Europe, North America, the Middle East and Asia.