Nickel 200/201 Pipes & Pipe Fittings
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Nickel 200/201 Pipes & Fittings Supplier in Mumbai, India
Nicorex Alloys is an ISO 9001/ISO 14001-certified supplier, importer, and stockist of Nickel 200/201 pipes and fittings based in Mumbai, India. We supply seamless pipes per ASTM B161 / ASME SB161, welded pipes per ASTM B725, condenser tubes per ASTM B163, and buttweld fittings per ASTM B366.
Nickel 200/201 handles it without measurable attack. These commercially pure nickel grades (99.0% min. Ni+Co) are the most resistant common engineering alloys to caustic alkalis (NaOH, KOH) at all concentrations, including molten caustic. They also resist reducing acids (deaerated H₂SO₄, HCl), dry chlorine, fluorine compounds, and high-purity water. The two grades share identical base composition with one critical difference: Nickel 200 (UNS N02200) has carbon ≤0.15%, while Nickel 201 (N02201) limits carbon to ≤0.02%. Above 315°C (600°F), higher carbon in Nickel 200 precipitates as graphite at grain boundaries, causing embrittlement. Nickel 201 prevents this graphitisation and is required for all services above 315°C. Austenitic stainless steels have rapid degradation in molten caustic over roughly 300°C, while commercially pure nickel has enhanced resistance.
Werkstoff Nr. 2.4060/2.4066 (200) and 2.4061/2.4068 (201). Annealed Nickel 200 tensile is in the range of 462–586 MPa (67–85 ksi). Yield strength is around 148-310 MPa. Elongation is around 35-50%. The highest thermal conductivity of any nickel alloy is 70.2 W/m·°C. The alloy is ferromagnetic and has a Curie temperature of about 360°C (680°F). Pipe diameters range from NPS 1/2″ to 12″ and SCH 5S to XXS. The fittings range from NPS 1/2″ to 48″. All shipments are accompanied by comprehensive EN 10204/3.1 Mill Test Certificates to ensure full material traceability and compliance.
Specifications of Nickel 200/201 Pipes & Fittings
The following table shows the specifications of Nickel 200/201 (UNS N02200/N02201) pipes and fittings, including condition, size, schedules and other required information:
| Pipes Specifications | |
|---|---|
| Parameter | Details |
| Pipe & Tube Standards | ASTM B161, B725, B775, B163 / ASME SB161, SB725, SB775, SB163 |
| Grades | Nickel 200 (UNS N02200), Nickel 201 (UNS N02201) |
| Size Range | NPS 1/2″ to 12″; OD 6.35–323.9 mm |
| Wall / Schedule | SCH 5S, 10S, 40S, 40, 80S, 80, 120, 160, XXS |
| Fittings Specifications | |
| Parameter | Details |
| Fittings Standards | Buttweld Fittings: ASTM B366 / ASME SB366 |
| Dimensions | ASME B16.9, B16.28 |
| Size | BW Size: NPS 1/2″ to 48″ |
Chemical Composition of Nickel 200/201 Pipes & Fittings
The chemical composition of both Nickel 200 and Nickel 201 can be found in the table provided. It is worth noting the amount of carbon in the Nickel 201 alloy.
| Material / Element | Nickel + Cobalt | Carbon (C) | Manganese (Mn) | Iron (Fe) | Sulfur (S) | Silicon (Si) | Copper (Cu) |
|---|---|---|---|---|---|---|---|
| 200 (N02200) | 99.0 min | 0.15 max | 0.35 max | 0.40 max | 0.01 max | 0.35 max | 0.25 max |
| 201 (N02201) | 99.0 min | 0.02 max | 0.35 max | 0.40 max | 0.01 max | 0.35 max | 0.25 max |
Both grades are the purest nickel available in wrought form. Above 315°C, Nickel 200’s higher carbon can precipitate as graphite at grain boundaries (graphitisation), causing intergranular embrittlement. Nickel 201’s ultra-low carbon prevents this. Both grades are commonly dual-certified, meaning one heat can meet both N02200 and N02201 specifications.
Mechanical Properties of Nickel 200/201 Pipe & Fitting
The mechanical properties for Nickel 200 and Nickel 201, as per ASTM B161, are as follows. It is worth noting the tensile and yield strengths of both in different tempers.
| Property | Tensile (MPa) | Yield 0.2% (MPa) | Elongation (%) | Hardness |
|---|---|---|---|---|
| 200 Annealed | ≥ 380 MPa (55 ksi) | 148–310 | 35–50 | 75 HRB max |
| 200 Stress-Rel. | 586–827 | 379–690 | 15–35 | 85–100 HRB |
| 201 Annealed | 403–517 | 103–276 | 40–55 | 65 HRB max |
Nickel 201 has lower hardness and a lower work-hardening rate, suited for spinning and cold forming. Both grades show no ductile-to-brittle transition even at liquid-helium temperature (-269°C). Fatigue strength (10⁸ cycles): annealed rod ~159 MPa (23 ksi); stress-equalised ~234 MPa (34 ksi).
Nickel 200/201 Equivalent Grades
The table provided gives us the international designations of both UNS N02200 and UNS N02201.
| Property | UNS | Werkstoff Nr. | DIN | JIS | GOST |
|---|---|---|---|---|---|
| Nickel 200 | N02200 | 2.4060 / 2.4066 | 17751 | NW 2200 | НП-2 |
| Nickel 201 | N02201 | 2.4061 / 2.4068 | 17751 | NW 2201 | НП-2 |
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Types of Nickel 200/201 Pipe & Pipe Fitting
Manufactured for caustic alkali, reducing chemical, high-purity water, and food-grade piping systems:
Nickel 200 Seamless Pipe
Nickel 201 Welded Pipe
Nickel 200 Condenser Tube
Nickel 201 ERW/EFW Pipe
Nickel 200 Elbow (45° / 90° / 180°)
Nickel 201 Tee
Nickel 200 Reducer
Nickel 200 Cap & Stub End
Industries Using Nickel 200 Pipes & Fittings
Specify the industries where commercially pure nickel’s caustic immunity, food-grade purity, high conductivity, and magnetic properties are required:
- Caustic Soda & Alkali Processing: Caustic evaporator pipe and tubing should be Nickel 201 for NaOH concentrations above 50% and services over 315°C. NaOH and KOH are stored, transferred, and distributed via pipes. Pipe bleaching.
- Food Processing: Food-contact-approved piping. Fruit juice, dairy, brewing, confectionery, and edible oil processing all use this alloy. The 99.0%+ purity prevents product contamination and off-flavours that lower-purity alloys can introduce.
- Pharmaceutical: This alloy is utilised in drug synthesis piping, sterile water, and WFI (water for injection) systems.
- Chemical Processing: This substance reduces deaerated H₂SO₄ and HCl service pipes at moderate temperatures and concentrations. Hydrogen chloride and dry chlorine are utilised. High-nickel pipes and fluorine compounds prevent fluorine attack.
- Electronics & Electrochemical: Electroplating uses plater bars, anodes, and baskets. Connector pins and electronic leads. The maximum electrical conductivity of any nickel alloy makes pure nickel ideal for electrochemical and electronic applications.
- Heat Exchange & Power: A condenser tube with 70.2 W/m·°C thermal conductivity optimises heat transmission. Desalination uses evaporator tubes and apparatus. Power plants employ feedwater heater pipes.
- Aerospace & Defence: The procedure uses rocket motor casings and thrust chamber components. Ordnance uses. Unique magnetic qualities (Curie temp ~360°C), excellent heat and electricity conductivity, and corrosion resistance make it a top option for military and space applications.
How to Order Nickel 200/201 Pipes & Fittings from Nicorex Alloys
Please provide the following details to place an order as per your requirement for Nickel 200/201 Pipes & Fittings:
- Product Form — Seamless Pipe or Fittings (Elbow, Tee, Reducer, End Cap, Stub End) — specify product form and exact grade (Nickel 200 / Nickel 201)
- Size — Pipes: OD x WT or NPS x Schedule / Fittings: NPS x Schedule — specify reducing sizes where applicable
- End Type / Connection — Pipes: PE / BE / TE / Fittings: Butt Weld — specify
- Material Grade — Nickel 200 / UNS N02200 / W.Nr. 2.4066 or Nickel 201 / UNS N02201 / W.Nr. 2.4068 — specify grade
- Quantity — Number of pieces or total weight in kg / MT
- Standard — Pipes: ASTM B161 / ASME SB-161 / Fittings: ASTM B366 / ASME SB-366, ASME B16.9, ASME B31.3
- Additional Requirements — Minimum 99% Ni content confirmation, carbon content verification (200: C ≤ 0.15% / 201: C ≤ 0.02%), annealed condition, NACE MR0175 compliance, PMI, heat/lot traceability
- Documentation — MTC EN 10204 3.1/3.2, PMI Report, Chemical Composition Report, Mechanical Properties Report, IGC Test Report, TPI Certificate
- Packaging — PVC end caps on pipes / individual polybag per fitting, bundled with steel strapping, ISPM 15 compliant export crating with VCI wrap and full labelling
- Delivery Destination — Domestic / International (specify port of discharge or delivery address)
Frequently Asked Questions
What is the Difference Between Nickel 200 and Nickel 201?
Carbon content. Nickel 200 has C ≤ 0.15%; Nickel 201 has C ≤ 0.02%. Above 315°C (600°F), higher carbon in Nickel 200 causes graphitisation (carbon precipitation at grain boundaries), leading to embrittlement. Nickel 201 is required for all services above 315°C.
What ASTM Standard Covers Nickel 200 Seamless Pipe?
ASTM B161/ASME SB161 covers both N02200 and N02201. Welded pipe: B725. Condenser tube: B163. Fittings: B366 (buttweld).
Is Nickel 200 Pipe Food-Grade?
Yes. Approved for food-contact applications. It is widely used in food, beverage, and pharmaceutical piping where product purity and the absence of metallic contamination are critical.
What Welding Filler is Used for Nickel 201 Pipe?
ERNi-1 (FM 61) for GTAW. ENi-1 (Electrode 141) for SMAW. No preheating required. Stress relief at 540–650°C is recommended for caustic service.
What is the Maximum Temperature for Nickel 200 Pipe?
Nickel 200 should not be used above 315°C (600°F) due to graphitisation risks. For service above 315°C, use Nickel 201 (C ≤ 0.02%). Nickel 201 serves up to ~600°C in non-oxidising environments.