Nickel 201 Bolts Supplier

  • Reliability in High-Temperature Environments
  • Long Service Life in Harsh Corrosive Environments
  • High Purity and Cleanliness
  • Good Sealing and Electrical Conductivity
nickel 201 bolts

Nickel 201 Bolts: The Low-Carbon Pure Nickel Solution for High-Temperature and Extreme Corrosion Resistance

SSM provides Nickel 201 bolts engineered for critical service where exceptional corrosion resistance at elevated temperatures is the primary requirement. These low-carbon, commercially pure nickel fasteners deliver a unique combination of excellent chemical stability, high thermal and electrical conductivity, and outstanding low-temperature toughness. With superior resistance to high-temperature caustics, reducing atmospheres, dry halogen gases, and various organic and mineral acids, Nickel 201 bolts are the fundamental choice for demanding chemical processing, aerospace, nuclear, and cryogenic applications.

SSM Nickel 201 Bolts are manufactured in strict accordance with ASTM B160 / B366, ASME SB-160 / SB-366, and other applicable standards, with full material certification (including EN 10204 3.1) available. They are specifically engineered for use in high-temperature caustic evaporators, reactor flanges, furnace components, nuclear processing equipment, and other demanding applications where reliability under severe corrosion and thermal stress above 315°C (600°F) is paramount, while maintaining excellent mechanical stability and preventing graphite-induced embrittlement.

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Technical Specifications of Nickel 201 Bolts

پارامترDescription for Nickel 201 Bolts
Product NameNickel 201 Bolts / Stud Bolts
موادLow-Carbon Commercially Pure Nickel UNS N02201
نوع محصولBolts, Stud Bolts, Threaded Rods, Special Shapes
Key StrengthsHigh-Temperature Stability (resists graphite embrittlement); Exceptional Corrosion Resistance in Caustic & Reducing Media; Excellent Cryogenic Toughness; High Thermal/Electrical Conductivity
Strengthening MethodCold Worked (primary method) or Annealed. Not age-hardenable.
عملیات حرارتیAnnealing (typically 760‑871°C / 1400‑1600°F) to relieve stresses and achieve soft temper.
محدوده دماCryogenic to ~540°C (1000°F) for continuous service in non‑oxidizing, sulfur‑free atmospheres. Recommended above 315°C (600°F) where Nickel 200 is unsuitable.
مقاومت در برابر خوردگیExcellent resistance to: Hot concentrated alkalis, Seawater & brine, Reducing acids (HCl, H₂SO₄, HF under non‑oxidizing conditions), Organic acids, Dry halogen gases. Poor resistance to oxidizing acids (e.g., HNO₃).
Unique PropertyLow Carbon Content (≤0.02%) prevents graphite precipitation at high temperatures; Ferromagnetic; High Ductility; Low Gas Permeability.
استانداردهای قابل اجراASTM / ASME (B160, B366), AMS 4676, DIN 17740, ISO 6208 (customizable)
محدوده اندازهCustomized (M3 to M64 & equivalent inch series)
پایان سطحPlain / Clean & Bright (annealed surface) / Passivation not standard (may be cleaned per ASTM B366).
Primary ApplicationsHigh‑Temperature Caustic Evaporators & Reactors; Nuclear Fuel Processing; Aerospace & Furnace Components; Semiconductor & High‑Purity Gas Systems; Seawater & Cryogenic Equipment.
CertificationEN 10204 3.1 / 3.2, Mill Test Certificates, Full Traceability (Heat treatment certs if annealed)
WarrantyAs per specific contract and application conditions
After‑sales ServiceFull technical documentation, critical high‑temperature material selection guidance (Ni200 vs. Ni201), application support, corrosion‑resistance consultation

Material Properties – Nickel 201 Bolts

نیکل 201 is a low-carbon, commercially pure wrought nickel material distinguished by its exceptionally high nickel purity and controlled carbon content. It offers a unique combination of outstanding high-temperature stability in non-oxidizing environments, excellent corrosion resistance to a wide range of reducing and caustic media, and very good thermal and electrical conductivity. Its ultra-low carbon specification prevents graphite-induced embrittlement, making it the preferred choice for continuous service above 315°C (600°F). As a non-age-hardenable material, its strength is primarily achieved through cold working.

Chemical Composition (wt.%)

(Conforms to ASTM B160 / ASME SB-160 for UNS N02201)

عنصرمحدوده محتواPrimary Function / Key Difference vs. Ni200
نیکل (Ni)≥ 99.0%Base element; provides fundamental corrosion resistance.
مس (مس)≤ 0.25%Maximum allowable impurity.
آهن (آهن)≤ 0.40%Maximum allowable impurity; contributes to ferromagnetism.
منگنز (Mn)≤ 0.35%Maximum allowable impurity.
کربن (C)≤ 0.02%Key differentiator. Ultra-low carbon prevents graphitization and embrittlement at temperatures above ~315°C (600°F).
سیلیکون (Si)≤ 0.35%Maximum allowable impurity.
گوگرد (S)≤ 0.01%Strictly controlled harmful impurity.

Typical Mechanical Properties for Fasteners

Annealed Condition (Soft Temper):

  • Tensile Strength: 380 – 520 MPa (55 – 75 ksi)
  • Yield Strength (0.2% Offset): 110 – 240 MPa (16 – 35 ksi)
  • ازدیاد طول: ≥ 40%
  • Hardness: Rockwell B 65 – 85

Cold Worked / Cold Drawn Condition:

  • Tensile Strength: 550 – 760 MPa (80 – 110 ksi)
  • Yield Strength (0.2% Offset): 480 – 690 MPa (70 – 100 ksi)
  • ازدیاد طول: 20% – 35%
  • Hardness: Rockwell B 80 – 100

 

Nickel 201 Bolts Typical Applications

Nickel 201 bolts, with their unique combination of ultra-low carbon content, exceptional high-temperature stability, and superior corrosion resistance, are the critical fastener solution for industries where reliability under severe thermal and chemical stress is non-negotiable. Their primary advantage over نیکل 200 is the prevention of graphite embrittlement in sustained high-temperature service, making them indispensable for the following demanding applications:

  • High-Temperature Chemical Processing
  • صنعت هسته ای
  • Aerospace & Advanced Engineering
  • Electronics & High-Purity Manufacturing
  • Energy & Cryogenics
nickel 201 bolts application
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SSM has significant product advantages in manufacturing Nickel 201 Bolts. Whether it’s quality or price, we will meet your needs.

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Nickel 201 Bolts Standards and Specifications

Nickel 201 bolts (UNS N02201) are a low-carbon, high-purity, corrosion-resistant fastener engineered for high-temperature stability in non-oxidizing environments, while maintaining exceptional resistance to caustics, reducing acids, and cryogenic service. Widely used in chemical processing, nuclear, aerospace, semiconductor, and advanced energy industries. The main standards and specifications are organized below.

دسته بندیStandard / SystemDescription / Notes (For Nickel 201 Bolts)
Material StandardsUNS N02201Low-carbon commercially pure wrought nickel (≥99.0% Ni, C ≤ 0.02%). The key grade identifier for high-temperature service.
 ASTM B160 / ASME SB-160Standard specification for nickel rod and bar. Primary material standard for UNS N02201.
 ASTM B366 / ASME SB-366Standard specification for nickel alloy forgings (applies to forged fasteners).
 AMS 4676Aerospace Material Specification for low-carbon nickel bar, rod, and wire. Use AMS 4676 instead of AMS 4675 for Ni201.
Fastener StandardsASTM F467 / F467MStandard for nonferrous bolts, hex cap screws, and studs for general use (inch/metric). Must specify UNS N02201.
 ASME B18.2.1 / B18.31.2Dimensional standards for hex bolts and stud bolts.
 MIL Specs (e.g., MIL-DTL-46882)May be referenced for defense/aerospace; grade must be specified as UNS N02201.
European / InternationalDIN 17740German standard for wrought nickel (includes LC-Ni 99.2, corresponding to Ni201).
 EN 10204 3.1 / 3.2Material test certificate (mandatory for EU projects).
Chemical, Metallurgical & ProcessingASTM B160 / AMS 4676Define the required ultra-low carbon (≤0.02%) chemical composition for UNS N02201.
 عملیات حرارتیAnnealed (Soft) or Cold Worked condition. Not age-hardenable. Condition must be specified based on required strength vs. ductility.
 Magnetic PropertyFerromagnetic (magnetic). This is an inherent property.
Inspection & TestingASTM E8Tensile testing at room temperature (mandatory).
 ASTM E10 / E18Brinell/Rockwell hardness testing.
 PMI Testing (XRF / OES)Critical to confirm grade (Ni201 vs. Ni200) and distinguish from other alloys.
 Intergranular Corrosion TestMay be specified per ASTM G28 Method A for high-temperature service to check for sensitization.
 Low-Temperature Impact TestOften specified (e.g., ASTM A370 / E23) for cryogenic applications to verify toughness.
 High-Temperature Tensile/Stress RuptureMay be specified for applications above 315°C (600°F) to verify performance under service conditions.
درمان سطحیCleaning / PicklingPer ASTM B366 or internal procedures to remove annealing scale.
 PassivationNot standard practice for pure nickel, as it does not form a passive oxide layer like stainless steel. Surface is typically supplied clean and bright.
 Anti-Galling CoatingsMay be applied (e.g., PTFE, MoS₂) but is less critical than for work-hardening alloys.
Industry Standards / ReferencesASME Boiler & Pressure Vessel Code, Section II & VIIIReferenced for high-temperature pressure vessel and heat exchanger components. Ni201 is specified for temperatures where Ni200 is not allowed.
 NACE MR0175 / ISO 15156Material requirements for sour service. Nickel 201 has good resistance but conditions apply.
 FDA / EHEDG / 3-A Sanitary StandardsReferenced for high-purity food, pharmaceutical, and bioprocessing applications.
 Aerospace (e.g., AMS, NASA)Referenced for high-temperature engine components, fuel systems, and vacuum applications.
 Nuclear Standards (e.g., ASME III, RCC-M)Referenced for nuclear fuel processing and reactor auxiliary systems.
 Semiconductor (SEMI)Referenced for high-purity gas delivery and chamber components.

 

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Nickel 201 bolts are the engineered choice for critical high-temperature corrosion applications. They bridge the gap where standard stainless steels fail and where Nickel 200 becomes unreliable. Their value lies in ensuring long-term structural integrity and leak-free performance in the most punishing environments, justifying their specification in flagship industrial and advanced technology projects.

منابع بیشتر:

https://en.wikipedia.org/wiki/Stainless_steel

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