Ni 201 (UNS N02201) Supplier | Bar, Tube, Plate - Hangbo Alloy
Date: 2024年11月18日 Categories: All Products、Nickel Views: 1727
Excerpt:
Nickel 201 (UNS N02201) supplier — ASTM B160/B161/B162. Low-carbon Nickel 200 for elevated-temperature service above 300°C. Caustic evaporators, food processing, electroplating.
Shanghai Hangbo Alloy Group Co., Ltd. is an ISO 9001:2015 certified manufacturer and global supplier of Nickel 201 (UNS N02201 / W.Nr. 2.4068) round bars, plates, sheets, strips, seamless tubes, welded pipes, forgings and wire. The low-carbon version of commercially pure nickel (≥ 99.0% Ni, ≤ 0.02% C), Nickel 201 retains all the corrosion resistance and conductivity of Ni 200 while remaining stable above 315°C — making it the first choice for high-temperature caustic, chemical and thermal-processing equipment.
Standards
- ASTM B160 — Bar, Rod, Wire (Hot-Worked / Annealed)
- ASTM B162 — Plate, Sheet, Strip
- ASME SB160 / SB162 — Pressure Vessel Applications
- AMS 5553 — Sheet & Strip (Aerospace Grade)
- UNS N02201 / W.Nr. 2.4068 / DIN 2.4068
Precise ASTM Chemical Composition (%)
| Element | Range / Max |
|---|---|
| Nickel (Ni, incl. Co) | 99.0 min |
| Carbon (C) | 0.02 max |
| Manganese (Mn) | 0.35 max |
| Iron (Fe) | 0.40 max |
| Sulfur (S) | 0.010 max |
| Silicon (Si) | 0.35 max |
| Copper (Cu) | 0.25 max |
Physical & Mechanical Properties
| Property | Typical Value (Min) |
|---|---|
| Tensile Strength (Annealed, ASTM B160/B162) | 414 MPa (60 ksi) |
| Yield Strength (0.2% Offset) | 103 MPa (15 ksi) |
| Elongation (in 2") | 40% |
| Hardness (Annealed, Typical) | ≤ 90 HRB (≈ 120 HB) |
| Density | 8.89 g/cm³ |
| Melting Range | 1435 – 1446 °C |
| Thermal Conductivity (100 °C) | 70.1 W/m·K |
| Curie Temperature | 353 °C |
Depth Characteristics
- High-Temperature Stability: The ultra-low 0.02% max carbon content prevents graphitization above 315°C, avoiding the embrittlement risk of Ni 200.
- Caustic Resistance at Temperature: Outstanding performance in hot caustic alkalis — evaporators, concentrators and piping at 300–400°C.
- Immune to Chloride SCC: Like Ni 200, pure nickel is free from chloride-induced stress corrosion cracking.
- High Conductivity & Purity: Excellent thermal/electrical conductivity combined with very low impurity levels for sensitive applications.
- Excellent Fabricability: Superior formability, deep drawing and weldability with ENi-1/ERNi-1 fillers for complex equipment.
Manufacturing Process — Melting & Forging
Nickel 201 is melted in electric furnaces (VIM/EAF) with exceptionally tight control of carbon (≤ 0.02%) and gaseous elements. Ingots are hot forged and rolled at 870–1230°C, then annealed at 705–925°C and water quenched for a soft recrystallized structure. Bars are peeled and centerless-ground, tubes cold-pilgered and pickled, and strip bright-annealed for clean surfaces. The low carbon level keeps carbides in solution, so mechanical properties remain stable during long-term high-temperature service.
Testing & Inspection Methods — 100% PMI / UT
- PMI (Positive Material Identification): 100% XRF verification of nickel purity and carbon-grade on every heat.
- UT (Ultrasonic Testing): Full-length ultrasonic examination of bar and tube per ASTM E213/E2375.
- Mechanical & Chemical: Tensile/hardness per ASTM E8/E10; chemical analysis per ASTM E1473 with EN 10204 3.1/3.2 certificates.
- Plus: hydrostatic testing of tubes, eddy current testing and 100% dimensional inspection.
High-Frequency Application Scenarios
- Caustic Soda Concentration: Evaporators, concentrators and caustic piping operating above 315°C.
- Chemical Processing: High-temperature reactors, heat exchangers and vessels for chlorine, HF and alkalis.
- Synthetic Fibers & Plastics: Polymerization and spinning equipment for man-made fiber production.
- Food & Dairy: High-temperature pasteurizers, cookers and hygienic process lines.
- Electronics: Thermocouple sheaths, lead frames and components requiring purity and stability.
6+ Professional FAQs
1. Why choose Nickel 201 over Nickel 200?
Above 315°C, the carbon in Ni 200 can precipitate as graphite at grain boundaries and embrittle the material. Ni 201 (0.02% max C) eliminates this risk.
2. Are the corrosion properties the same as Ni 200?
Essentially yes — both are commercially pure nickel (≥ 99% Ni). Ni 201 adds high-temperature capability without sacrificing caustic or reducing-media resistance.
3. What is the maximum service temperature of Ni 201?
Ni 201 can serve continuously to about 600°C in air; in reducing or caustic environments, performance is governed by the specific media and stress conditions.
4. Is Nickel 201 magnetic?
Yes, it is ferromagnetic with high permeability and low coercivity, similar to Ni 200.
5. Can Nickel 201 be welded?
Yes — excellent weldability with matching ENi-1/ERNi-1 fillers; low heat input is recommended to preserve the fine-grained structure.
6. Which product forms are available?
Round bar, plate, sheet, strip, seamless/welded tube and pipe, forgings, flanges and wire — with EN 10204 3.1 certificates and full traceability.
Supply List
- Round Bar: Φ6mm – Φ500mm, peeled / ground
- Plate / Sheet / Strip: Thickness 0.5mm – 80mm, cut-to-size
- Seamless Tube: OD 6mm – 219mm
- Welded Pipe: OD 60mm – 610mm
- Forgings / Flanges: Custom per drawings
- Wire: Φ0.1mm – 8mm
Need certified Nickel 201 for high-temperature caustic or chemical service? Contact Shanghai Hangbo Alloy Group for instant quotations, stock availability and mill certificates — quick response within 10 minutes. Email: sales@hangboalloy.com / Tel: +86 13611656360.
