Skip to main content
Jiangyin Jiangnan Metal Co., Ltd. Open-Die Forging Factory · Jiangyin, China

2.4605 Forgings: Alloy 59 (UNS N06059) Rings, Flanges, Shafts and Bars

Technical data sheet and forged product range for material 2.4605 / NiCr23Mo16Al, produced to drawing by Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory in Jiangyin, Jiangsu, China.

2.4605
Werkstoff-Nr. · EN/DIN

A nickel-chromium-molybdenum alloy with high chromium and high molybdenum in the same chemistry. Specified for process streams that are alternately oxidising and reducing, and for chloride service where stainless steel is not suitable.

UNSN06059
EN / DIN nameNiCr23Mo16Al
Trade nameAlloy 59
BrandNicrofer 5923 hMo
Cr22.0–24.0 %
Mo15.0–16.5 %

What is 2.4605?

2.4605 is the EN/DIN material number for NiCr23Mo16Al, a low-carbon nickel-chromium-molybdenum alloy containing 22.0–24.0 % chromium and 15.0–16.5 % molybdenum with a nickel balance of roughly 59 %. It is known internationally as Alloy 59 and UNS N06059, and is sold under the brand names Nicrofer® 5923 hMo (VDM Metals) and BÖHLER L059 (voestalpine).

Chromium provides resistance under oxidising conditions and molybdenum under reducing conditions. Because 2.4605 carries both at a high level, one alloy covers process streams that alternate between the two, such as flue-gas desulphurisation, waste incineration scrubbers and mixed sulphuric/hydrochloric service. Carbon is capped at 0.010 % and silicon at 0.10 %, roughly a third of the limits allowed in a conventional Ni-Cr-Mo grade, to suppress secondary phase formation at grain boundaries during welding and hot working.

Jiangyin Jiangnan Metal Co., Ltd. forges 2.4605 to customer drawings as seamless rolled rings, flanges, shafts, discs, sleeves, bushings, tube sheets, blocks and bars, supplied solution annealed and quenched with EN 10204 3.1 or 3.2 inspection documents and ultrasonic testing to EN 10228-3, SEP 1921 or ASTM A388.

Source: Jiangyin Jiangnan Metal Co., Ltd., open-die forging factory, No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu, China · sales@steelforgepieces.com · +86-189-2135-9659 · Reviewed 8 August 2026.

Material groupNi-Cr-Mo, solid solutionnot precipitation hardenable
Density8.6 g/cm³0.311 lb/in³
Melting range1310–1360 °C2390–2480 °F
Tensile, annealed≥ 690 MPa100 ksi min, ASTM B564
Yield Rp0.2≥ 310 MPa45 ksi min
Hot working range1180–950 °C2156–1742 °F
MagneticNon-magneticface-centred cubic
Delivery conditionSolution annealed+ rapid quench

Designations, equivalents and standards

2.4605 appears under several names depending on which standards body a drawing was written to. All of the designations below describe the same low-carbon nickel-chromium-molybdenum alloy and are accepted interchangeably on our order confirmations.

Table 1. 2.4605 international equivalents
SystemDesignationNote
EN / DIN (Werkstoff-Nr.)2.4605Primary European material number
EN / DIN short nameNiCr23Mo16AlChemical designation
UNSN06059United States
Common trade nameAlloy 59Also written “alloy 59”, “Nickel Alloy 59”
Producer brand namesNicrofer® 5923 hMo · BÖHLER L059VDM Metals · voestalpine BÖHLER Edelstahl
VdTÜVWerkstoffblatt 505Pressure-vessel approval sheet
Sour serviceNACE MR0175 / ISO 15156Listed for H2S-containing oil and gas service
Nearest alternatives2.4819 / N10276 · 2.4602 / N06022 · 2.4606 / N06686C-276, Alloy 22, Alloy 686

Product standards commonly quoted on 2.4605 orders

  • ASTM B564 / ASME SB-564, forgings
  • ASTM B462, forged flanges and valves
  • ASTM B574 / ASME SB-574, rod and bar
  • ASTM B575 / ASME SB-575, plate and sheet
  • ASTM B622, seamless pipe and tube
  • DIN 17744, chemical composition
  • DIN 17750 / 17751 / 17752, semi-finished forms
  • VdTÜV WB 505
  • NACE MR0175 / ISO 15156
  • EN 10204 3.1 / 3.2, certification

Tell us the ordering standard at enquiry stage. Acceptance limits for chemistry, mechanical properties, corrosion testing and NDT differ between ASTM B564 and DIN 17744, and the melting route may need to change accordingly.

Chemical composition of 2.4605

The composition below is the standard limit set for NiCr23Mo16Al / Alloy 59 per ASTM B574 and DIN 17744. Every heat we forge is supplied with a ladle analysis and, on request, a product analysis on the finished forging.

Table 2. 2.4605 / Alloy 59 chemical composition, % by weight
LimitNiCr MoAlFe MnCuCo CSiP S
min. %bal.22.015.0 0.10
max. %≈ 5924.016.5 0.401.50.500.50 0.300.0100.100.0150.010

← Scroll the table sideways to see all 13 elements →

Nickel is the balance and typically runs close to 59 %, which is where the trade name comes from. Exact limits are fixed by the ordering standard; ASTM B574 and DIN 17744 differ slightly on residual limits.

Purpose of the 0.010 % carbon and 0.10 % silicon limits. Both are roughly a third of the limits allowed in a conventional Ni-Cr-Mo grade. They suppress carbide and intermetallic precipitation at grain boundaries during welding and hot working. Heavy forgings spend longer in the critical temperature range than sheet products, so these limits are more significant on forged sections than on rolled product.

Pitting resistance. With 23 % Cr and 15.75 % Mo nominal, the Pitting Resistance Equivalent Number (PREN = Cr + 3.3 × Mo) is approximately 76. This is higher than 6Mo superaustenitic stainless steels and most competing nickel alloys, and is the basis for specifying 2.4605 in chloride-bearing service.

Mechanical properties of 2.4605 forgings

Values below are for hot-worked, solution-annealed and quenched forged product at room temperature. The guaranteed minima are those of ASTM B564 for UNS N06059; typical values from production are noticeably higher and are reported per heat on the EN 10204 certificate.

Table 3. Room-temperature mechanical properties, solution annealed
PropertyMinimum (ASTM B564)Typical productionImperial minimum
Tensile strength, Rm690 N/mm²730–810 N/mm²100 ksi
Yield strength, Rp0.2310 N/mm²340–400 N/mm²45 ksi
Elongation, A545 %50–65 %45 %
Reduction of area60–75 %
Hardness≤ 100 HRB≈ 200–230 HV
Modulus of elasticity207 GPa30 × 10³ ksi
Impact, Charpy V (RT)per ordertough, no transition

2.4605 has no ductile-to-brittle transition and retains toughness to cryogenic temperatures. Where the order references NACE MR0175 / ISO 15156, a maximum hardness limit applies and is verified and reported.

Physical properties

Table 4. Typical physical properties of 2.4605 / Alloy 59
PropertyValueCondition
Density8.6 g/cm³ (0.311 lb/in³)20 °C
Melting range1310–1360 °C (2390–2480 °F)
Crystal structureFace-centred cubicsingle phase, austenitic
Thermal conductivity≈ 10.5 W/m·K20 °C, solution annealed
Coefficient of expansion≈ 12.6 µm/m·K20–100 °C
Specific heat≈ 420 J/kg·K20 °C
Electrical resistivity≈ 1.28 µΩ·m20 °C
Magnetic responseNon-magnetic (µr ≈ 1.001)20 °C

Two of these values affect shop practice directly. Thermal conductivity is about one seventh that of carbon steel, so heat is retained in the cutting zone during machining and in the weld pool during fabrication. Thermal expansion is around a fifth higher than carbon steel, so welded joints require wider root gaps and large rings require additional machining allowance for distortion.

Forging practice for 2.4605

Two process parameters govern the result on this grade: the hot working window is narrow, and the cooling rate after solution annealing determines the corrosion resistance of the finished part. Our route controls both.

Open-die forging route for 2.4605 Eight stages: melting and ingot by electric arc furnace with argon oxygen decarburisation and electroslag remelting; reheat and soak at 1180 degrees Celsius; upsetting and cogging between 1180 and 1050 degrees Celsius; ring rolling, drawing or punching; finish forging stopping above 950 degrees Celsius; solution annealing between 1100 and 1180 degrees Celsius followed by water quench; machining; then ultrasonic testing and EN 10204 certification. FORGING ROUTE — 2.4605 / ALLOY 59 01 IngotEAF+AOD+ESR 02 Reheat1180 °C soak 03 Upset1180-1050 °C 04 Ring rolldraw / punch 05 Finishstop ≥950 °C 06 Solution1100-1180 °C +WQ 07 Machinerough/finish 08 UT + certEN 10204 3.1
Fig. 1. Open-die route for 2.4605 at Jiangyin Jiangnan Metal Co., Ltd. Orange nodes are hot-work stages (1180–950 °C); green nodes are melting, thermal treatment and inspection.

Melting route

2.4605 is melted by EAF with AOD or VOD refining followed by electroslag remelting (ESR). Vacuum induction melting plus ESR (VIM + ESR) is available where the order calls for tighter gas content or inclusion cleanliness, which is typical for sour service, nuclear and waste-containment work.

Hot working temperatures

2.4605 is hot worked between roughly 1180 °C and 950 °C. Heavy reduction such as upsetting, cogging, punching and the first ring-rolling passes is taken at the top of the range, from 1180 °C down to about 1050 °C. Forging stops before the piece drops below about 950 °C. Work carried out below the recrystallisation range leaves residual strain in a material that cannot be stress-relieved without a full re-solution anneal, and increases the risk of cracking. Stock is charged into a furnace already at the maximum hot forming temperature rather than heated up with the load.

Cooling rate after solution annealing. Slow cooling through the intermediate temperature range precipitates intermetallic and carbide phases at the grain boundaries, and these phases reduce corrosion resistance. For optimum corrosion behaviour the forging is cooled at more than 150 °C per minute from the solution temperature down to about 500 °C. Material cooled too slowly can still meet the tensile requirement while failing an intergranular corrosion test, so heavy sections are quenched rather than cooled in still air, and ASTM G28 method A is run where the order specifies it.

Forging reduction and grain flow

We work to a minimum forging ratio of 3:1 (higher on request) and orient grain flow to follow the principal stress direction of the part: circumferential on rolled rings, axial on shafts. Because 2.4605 is single phase and cannot be strengthened by heat treatment, grain size and grain flow set by forging are the properties you are actually buying. Reduction is set to break down the as-cast structure through the full section rather than at the surface only, which is a condition for consistent ultrasonic results on heavy rings and discs.

Heat treatment of 2.4605 forgings

2.4605 is a solid-solution alloy. It contains no hardening precipitates and cannot be solution treated and aged. A specification calling for solution plus ageing on this grade has normally been transferred from a precipitation-hardening superalloy data sheet and should be clarified before the order is placed. The applicable heat treatments are:

Table 5. Heat treatments applied to 2.4605
TreatmentTypical temperaturePurpose
Solution annealing1100–1180 °C, preferably ≈1120 °C, then water quench or forced airDissolves secondary phases, recrystallises the forged structure and restores full corrosion resistance. Standard delivery condition.
Re-solution anneal after cold work1100–1180 °C + quenchRequired after cold forming of more than about 15 %, and after any intermediate cold straightening.
Ageing / precipitation hardeningNot applicableNot applicable to this grade. Strength derives from solid-solution alloying and cold work only.
Conventional stress reliefNot recommendedThe usual stress-relief window overlaps the sensitisation range. Where residual stress must be removed, apply a full re-solution anneal and quench.

Hold time is normally set by section thickness, timed from temperature equalisation. The part is charged into a furnace already at the annealing temperature. Cooling must be accelerated, by water quench on heavy sections and forced air on thin ones. Still-air cooling is not acceptable on a large ring.

Forged forms and size capability

2.4605 is forged to customer drawing rather than to a stock list. The shapes below are typical of current production and are not a fixed catalogue.

  • Seamless rolled rings
  • Forged rings
  • Flanges
  • Shafts & spindles
  • Discs & disks
  • Sleeves & bushings
  • Tube sheets
  • Hollow forgings
  • Blocks & blanks
  • Round bars
  • Forged pipe
  • Valve bodies & stems
  • Valve seat rings
  • Nozzles
Table 6. Indicative size capability for 2.4605 open-die forgings
FormSize rangeSingle-piece weight
Seamless rolled ringsOD 200–2500 mm · wall 30–400 mm · height 40–800 mm10–5000 kg
Forged discs & blanksØ 100–1800 mm · thickness 30–600 mm10–4000 kg
Shafts & round barsØ 60–800 mm · length up to 6000 mm10–6000 kg
Sleeves, bushings, hollowsOD 120–1200 mm · ID from 60 mm10–2500 kg
Flanges & tube sheetsØ up to 2000 mm10–3000 kg
Blocks & rectanglesto drawing10–5000 kg

Minimum order: 1 piece. Delivery condition: as-forged, solution annealed, rough machined or finish machined. Typical lead time 25–45 days depending on raw material availability. 2.4605 is a specialty grade held in stock by few mills, so melting and ESR time should be allowed for on large sections. Confirm exact limits with our sales team before designing to them.

Corrosion behaviour and limitations of 2.4605

The table below covers both the environments 2.4605 is specified for and those where another grade performs better. The alloy has a broad envelope but is not suitable for every duty.

Table 7. Suitability of 2.4605 by environment
EnvironmentBehaviour
Mixed sulphuric / hydrochloric acidOutstanding. The duty the alloy was developed for, and where it outperforms C-276 and Alloy 22.
Flue gas desulphurisation (FGD)Outstanding. Low pH, chlorides and oxidising species in combination. The principal application for this grade.
Oxidising acids (nitric, mixed acid)Excellent, from the 22–24 % Cr content. C-276 is weaker in this range.
Reducing acids (HCl, dilute H2SO4, phosphoric)Excellent, from the 15–16.5 % Mo content. High-Cr low-Mo alloys are weaker in this range.
Chloride pitting and crevice corrosionOutstanding. PREN approximately 76, above 6Mo superaustenitic stainless steels and most nickel alloys.
Chloride stress-corrosion crackingEffectively immune under service conditions.
Seawater, concentrated brinesExcellent, including crevices under deposits and gaskets.
Wet chlorine, hypochlorite, chlorine dioxideExcellent. Used in bleach plant and chlorination equipment.
Sour service (H2S)Approved under NACE MR0175 / ISO 15156 when ordered and certified to it.
Hydrofluoric acidUsed successfully in HF service, but nickel-copper Alloy 400 remains the reference for anhydrous HF. Compare on the specific concentration and temperature.
Molten caustic / hot concentrated NaOHNot recommended. Commercially pure nickel (2.4068 / Nickel 201) is the reference material for this duty.
High-temperature sulphidising gasesNot recommended. 2.4605 is a wet-corrosion grade. High-temperature scaling resistance requires a different alloy.

2.4605 is listed by BAM for the transport of hazardous goods and holds a high resistance rating under NACE MR0175 / ISO 15156. Material selection should be confirmed against the actual service chemistry, temperature and concentration.

Typical applications for 2.4605 forgings

Flue gas desulphurisation and waste incineration

Scrubber and absorber internals, forged flanges for ducting and quench zones, spray header components, damper and flap hardware, agitator and ventilator shafts, and SO2 washer components for marine diesel exhaust gas cleaning systems.

Chemical and petrochemical process plant

Reactor rings and shell flanges for acetic acid and acetic anhydride service, sulphuric acid cooler components, forged tube sheets and shell flanges for shell-and-tube heat exchangers, column and tower flanges, multi-purpose plant hardware for chloride-containing organic processes, and forged valve bodies, seat rings, stems and plugs.

Oil, gas and geothermal

Sour service components certified to NACE MR0175 / ISO 15156, wellhead and Christmas tree parts, subsea and deepwater hardware, acid gas handling components, and geothermal plant equipment where the brine chemistry is aggressive.

Pulp, paper, pharmaceutical and waste containment

Bleach plant equipment handling chlorine dioxide, high-purity vessel and agitator components for active substance preparation, and forged hardware for radioactive waste containers where long-term crevice resistance governs the design life.

Machining and welding 2.4605

Machining

2.4605 work-hardens rapidly and has low thermal conductivity, so the usual problems are a burnt cutting edge and a work-hardened surface layer rather than tool breakage. Use sharp, positive-rake, well-supported carbide tooling on a rigid setup, a low surface speed with a heavy positive feed, and flood coolant. Avoid dwelling and avoid rubbing, since a rubbing pass hardens the surface layer and makes the following cut more difficult. Set a positive depth of cut that reaches below the hardened layer left by the previous pass. Allow for longer machining times and higher tooling cost than stainless steel of the same size.

Conventional stress relief is not available on this grade, so tight-tolerance parts are best rough machined before the final solution anneal where the drawing allows, then finish machined after quenching. Stress relieving a finish-machined 2.4605 part in the usual 600–900 °C window risks sensitisation.

Welding

Weldability is good by GTAW, GMAW, plasma, electron beam and SMAW, with good thermal stability and low sensitivity to hot cracking. Matching consumables are ERNiCrMo-13 filler wire (W.-Nr. 2.4607) and ENiCrMo-13 covered electrodes; weld metal has the same corrosion resistance as the base metal, and Alloy 59 is itself widely used as a filler for dissimilar joints. The material is welded in the solution annealed condition, and neither preheat nor post-weld heat treatment is required. It falls under ASME Section IX P-Number 43.

Joint preparation follows nickel-alloy practice rather than steel practice: wider root gaps and openings (1–3 mm) and included angles of 60–70° for butt joints, because the weld pool is viscous and shrinkage is pronounced. Joint faces and the surrounding area must be clean and free of grease, marking crayon, paint and cutting fluid. Keep heat input moderate and interpass temperature low, and use a pulsed technique for gas-shielded processes.

Testing, inspection and certification

Table 8. Standard and optional inspection scope
CheckStandard / methodScope
Chemical analysisSpectrometer, ladle + product analysisStandard
Tensile testISO 6892-1 / ASTM E8, to ASTM B564 minimaStandard, per heat and heat-treatment lot
HardnessRockwell B / VickersStandard; mandatory where NACE MR0175 applies
Intergranular corrosion testASTM G28 method AOn request. Commonly specified for FGD and chemical process orders
Grain sizeASTM E112On request
Ultrasonic testingEN 10228-3, SEP 1921, ASTM A388 / ASTM E2375Standard on rings, discs and shafts
Dye-penetrant testingEN 10228-2, ASTM E165On request (MPI not applicable, non-magnetic)
Positive material identificationPortable XRF / OESOn request, piece by piece
Dimensional reportTo drawingStandard
Inspection documentEN 10204 3.1 (works) or 3.2 (third party: TÜV, BV, SGS, LR)Standard / on request
Marking & traceabilityHeat number, grade, order number, stamped or paint-markedStandard

Third-party witnessed inspection can be arranged at our works. Where a client's own inspector attends, we issue the inspection and test plan (ITP) for approval before the first heat is released. On 2.4605 orders we recommend stating the ASTM G28 method A requirement and the cooling-rate requirement in the ITP, since these are the two checks that verify corrosion resistance on the finished part.

About the manufacturer

Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory in Zhouzhuang Town, Jiangyin City, Jiangsu Province, within the Yangtze River Delta forging cluster and about 150 km from the Port of Shanghai. We forge to customer drawing in carbon steel, alloy steel, tool steel, stainless steel and nickel alloys. 2.4605 / Alloy 59 is part of our nickel alloy programme together with the Hastelloy, Inconel, Incoloy and Monel grades.

Table 9. Supplier snapshot
ItemDetail
CompanyJiangyin Jiangnan Metal Co., Ltd.
TypeOpen-die forging factory (manufacturer, not trader)
AddressNo.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China
Telephone / WhatsApp / WeChat+86-189-2135-9659
Emailsales@steelforgepieces.com
Websitewww.steelforgepieces.com
Product rangeForged rings, seamless rolled rings, flanges, shafts, discs, sleeves, bushings, tube sheets, blocks, bars, hollow forgings
MaterialsCarbon steel, alloy steel, tool steel, stainless steel, nickel and cobalt alloys
CertificationEN 10204 3.1 and 3.2 material certificates; third-party inspection on request
Markets servedWorldwide. Chemical process, oil and gas, power, marine, mining, pressure vessel

Document reference

Jiangyin Jiangnan Metal Co., Ltd. (2026). 2.4605 Forgings: Alloy 59 (UNS N06059) Technical Data Sheet. Jiangyin, Jiangsu, China. Retrieved from https://www.steelforgepieces.com/Nickel-Alloy/2.4605.html

Data on this page is compiled from published material standards (DIN 17744, ASTM B564, ASTM B574, ASTM B462, VdTÜV WB 505, NACE MR0175 / ISO 15156) and our own production experience with 2.4605. It is offered for guidance. Guaranteed values for a specific order are those stated on the order acknowledgement and the EN 10204 certificate.

Frequently asked questions about 2.4605

What is material 2.4605?

2.4605 is the EN/DIN material number (Werkstoff-Nr.) for NiCr23Mo16Al, a low-carbon nickel-chromium-molybdenum alloy containing 22.0–24.0 % chromium and 15.0–16.5 % molybdenum with a nickel balance of roughly 59 %. Internationally it is known as Alloy 59 and UNS N06059, and it is sold under the brand names Nicrofer® 5923 hMo and BÖHLER L059. It is a solid-solution corrosion-resistant alloy, not a precipitation-hardening superalloy.

What is 2.4605 equivalent to?

2.4605 is equivalent to UNS N06059, Alloy 59, NiCr23Mo16Al (EN/DIN short name), Nicrofer® 5923 hMo (VDM Metals) and BÖHLER L059 (voestalpine). It is covered by DIN 17744 and VdTÜV Werkstoffblatt 505, by ASTM B564 / ASME SB-564 for forgings, by ASTM B462 for forged flanges, fittings and valves, and by NACE MR0175 / ISO 15156 for sour service.

What is the chemical composition of 2.4605?

Cr 22.0–24.0 %; Mo 15.0–16.5 %; Al 0.10–0.40 %; Ni balance, roughly 59 %; Fe 1.5 % max; Mn 0.50 % max; Cu 0.50 % max; Co 0.30 % max; C 0.010 % max; Si 0.10 % max; P 0.015 % max; S 0.010 % max. The extremely low carbon and silicon limits are what stop secondary phases forming at grain boundaries during welding and hot working.

Is 2.4605 solution annealed or age hardened?

Solution annealed only. 2.4605 is a solid-solution strengthened alloy with no hardening precipitates, so it cannot be age hardened. A specification calling for solution plus ageing on this grade has normally been transferred from a superalloy data sheet. Jiangyin Jiangnan Metal solution anneals 2.4605 forgings between 1100 and 1180 °C, preferably around 1120 °C, followed by water quenching or forced-air cooling.

Why must 2.4605 be quenched quickly after solution annealing?

Because slow cooling through the intermediate temperature range precipitates intermetallic and carbide phases at the grain boundaries, and those phases destroy the corrosion resistance the alloy was bought for. For best corrosion behaviour the forging should be cooled at more than 150 °C per minute from the solution temperature down to about 500 °C. A part can pass its tensile test and still be meet the tensile requirement and still fail an intergranular corrosion test.

What are the minimum mechanical properties of 2.4605 forgings?

In the solution annealed condition, ASTM B564 requires UNS N06059 forgings to meet a minimum tensile strength of 690 MPa (100 ksi), a minimum 0.2 % offset yield strength of 310 MPa (45 ksi) and a minimum elongation of 45 %. Actual values recorded on the EN 10204 certificate are normally well above these minima.

At what temperature is 2.4605 forged?

2.4605 is hot worked between about 1180 and 950 °C, followed by rapid cooling in water or air. Heavy open-die reduction such as upsetting and cogging is done at the top of that range, and forging should stop before the piece falls below roughly 950 °C, because working below the recrystallisation range leaves residual strain and risks cracking. The stock is charged into a furnace already at the maximum hot forming temperature.

How is 2.4605 different from Hastelloy C-276 and Alloy 22?

All three are Ni-Cr-Mo corrosion-resistant alloys, but 2.4605 carries high chromium (22.0–24.0 %) and high molybdenum (15.0–16.5 %) at the same time, in a tungsten-free chemistry, with tighter carbon and silicon limits than C-276. C-276 has lower chromium and is weaker under oxidising conditions; Alloy 22 has less molybdenum. In practice 2.4605 covers process streams that alternate between oxidising and reducing chemistry, where the alternative would be to select either C-276 or Alloy 22.

Can 2.4605 be used in sour service?

Yes. Alloy 59 / UNS N06059 is listed in NACE MR0175 / ISO 15156 for sour oil and gas service. The requirement must be stated on the purchase order so that hardness limits, delivery condition and test reporting are applied and recorded on the certificate.

What corrosive media suit 2.4605?

2.4605 excels in mixed sulphuric and hydrochloric acid, in oxidising and reducing mineral acids including nitric, phosphoric and sulphuric, in chloride-bearing media where it resists pitting, crevice corrosion and stress-corrosion cracking, and in flue gas desulphurisation environments. It is less suitable for molten caustic, where commercially pure nickel (2.4068 / Nickel 201) is the reference material, and it is a wet-corrosion grade rather than a high-temperature sulphidising grade.

Can 2.4605 forgings be welded?

Yes. 2.4605 is weldable by GTAW, GMAW, plasma, electron beam and SMAW, with good thermal stability and low sensitivity to hot cracking. Matching consumables are ERNiCrMo-13 filler wire (W.-Nr. 2.4607) and ENiCrMo-13 covered electrodes. The material is welded in the solution annealed condition, and neither preheat nor post-weld heat treatment is required. It falls under ASME Section IX P-Number 43.

Who supplies 2.4605 open-die forgings?

Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, forges 2.4605 / Alloy 59 into rings, seamless rolled rings, flanges, shafts, discs, sleeves, tube sheets, blocks and bars against customer drawings, with EN 10204 3.1 or 3.2 certification and ultrasonic testing to EN 10228-3, SEP 1921 or ASTM A388. Enquiries: sales@steelforgepieces.com, +86-189-2135-9659.

What information is needed to quote a 2.4605 forging?

A drawing, or the rough dimensions (OD × ID × height for a ring; Ø × length for a shaft or bar), the quantity, the ordering standard, the delivery condition (as-forged, rough machined or finish machined), the required inspection document (EN 10204 3.1 or 3.2) and any non-destructive testing or corrosion testing class such as ASTM G28 method A.

Request a price for 2.4605 forgings

Send a drawing or the rough dimensions and we will quote the forging, the machining allowance and the certification package together. Quotes normally go back within one working day.

  • Drawing, or OD × ID × height (rings) / Ø × length (shafts, bars)
  • Quantity and required delivery date
  • Ordering standard: ASTM B564, ASTM B462, DIN 17744, or your own spec
  • Delivery condition: as-forged, solution annealed, rough or finish machined
  • Inspection document: EN 10204 3.1 or 3.2
  • NDT and corrosion test class: UT, ASTM G28 A, NACE MR0175

Jiangyin Jiangnan Metal Co., Ltd. · No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu, China

Grades most often compared with 2.4605 at the material selection stage.