ASTM B622 Seamless Hastelloy C22 & C276 Alloy Pipe and Tube

  • Grade: UNS N10001, UNS N10655, UNS N10675, UNS N10276, UNS N06022, UNS N06455, UNS N06200, UNS N06210, UNS R30556, UNS R20033
  • Pipe Outside Diameter (OD): NPS 1/4″ -3″, Wall Thickness (WT): SCH10, SCH40, SCH80
  • Tube Outside Diameter (OD): 13.72 -88.9mm, Wall Thickness (WT): 1.65-7.62mm
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ASTM B622 Seamless Hastelloy C22 & C276 Nickel and Nickel-Cobalt Alloy Pipe & Tube

Golden Sunbird Metals supplies ASTM B622 seamless Hastelloy C22 & C276 alloy pipe and tube for demanding corrosive-service applications. This product covers a broad alloy range, including UNS N06022, UNS N10276, UNS N10675, UNS N10001, UNS N06455, UNS N06200, UNS N06210, and other nickel and nickel-cobalt grades, giving buyers flexible material options for different chemical environments. According to the page specification, the seamless pipe size range is NPS 1/4″ to 3″ with SCH10, SCH40, and SCH80 wall thicknesses, while the tube size range is 13.72–88.9 mm OD with 1.65–7.62 mm wall thickness. Supplied in annealed condition and available with EN 10204 3.1 or 3.2 inspection certificates, these tubes and pipes are widely used in chemical processing, seawater-related service, pollution control, and other severe corrosion environments. Golden Sunbird Metals delivers ASTM B622 seamless alloy solutions with stable quality and reliable performance.

Chemical Composition (wt.%) of ASTM B622 Seamless Hastelloy C22 & C276 Alloy Pipe and Tube

UNS No. (Ni) (%) (Cr) (%) (Mo) (%) (Fe) (%) (Co) (%) (W) (%) (C) (%)  (Mn) (%) (Si) (%) (P) (%) (S) (%)
N10001 63.0 min 28.5-31.5 5.0-7.0 1.0 max 2.5 max 1.5-3.0 0.03 max 1.0 max 0.08 max 0.04 max 0.03 max
N10655 65.0 min 14.0-18.0 15.0-17.0 3.0 max – 3.0-4.0 0.010 max 1.0 max 0.08 max 0.040 max 0.030 max
N10675 65.0 min – 27.0 min 3.0 max 2.5 max 3.0 max 0.010 max 3.0 max 0.10 max 0.020 max 0.010 max
N10276 57.0 min 14.5-16.5 15.0-17.0 4.0-7.0 2.5 max 3.0 max 0.010 max 1.0 max 0.08 max 0.040 max 0.030 max
N06022 58.0 min 20.0-22.5 12.5-14.5 2.0 max 2.5 max – 0.010 max 0.50 max 0.08 max 0.020 max 0.020 max
N06455 65.0 min 14.0-18.0 15.0-17.0 3.0 max – 3.0-4.0 0.010 max 1.0 max 0.08 max 0.040 max 0.030 max
N06200 55.0 min 23.0-28.0 15.0-17.0 3.0 max 2.5 max 1.6-2.5 0.010 max 0.50 max 0.08 max 0.020 max 0.020 max
N06210 67.0 min – 4.0-6.0 6.0 max 2.5 max 1.5 max 0.020 max 1.0 max 0.10 max 0.015 max 0.010 max
R30556 65.0 min – 26.0-30.0 2.0 max 2.5 max 1.0 max 0.010 max 1.0 max 0.10 max 0.040 max 0.030 max
R20033 65.0 min 2.5 max – 3.0 max 2.5 max 2.5 max 0.010 max 1.0 max 0.10 max 0.040 max 0.030 max

Mechanical properties of ASTM B622 Seamless Hastelloy C22 & C276 Alloy Pipe and Tube

Alloy

 Tensile Strength (min, ksi) Yield Strength (0.2% Offset, min, ksi) Elongation (in 2 in. or 4D, min, %)
UNS N10001 100 45 40
UNS N10665 110 51 40
UNS N10675 110 51 40
UNS N10629 110 51 40
UNS N10624 104 46 40
UNS N10242 105 45 40
UNS N10276 100 41 40
UNS N06022 100 45 45
UNS N06035 85 35 30
UNS N06455 100 40 40
UNS N06007 90 35 35
UNS N06975 85 32 40
UNS N06985 90 35 40
UNS N06030 85 35 30
UNS N06255 85 32 40
UNS N06250 90 35 40
UNS N08320 75 28 35
UNS N08135 73 31 40
UNS N06002 100 40 35
UNS N06060 90 35 40
UNS R30556 100 45 40
UNS N06230 110 45 40
UNS N06058 110 52 40
UNS N06059 100 45 45
UNS N06200 100 45 45
UNS N10362 105 45 40
UNS N08031 94 40 40
UNS N08535 73 31 40
UNS N06686 100 45 45
UNS N12160 90 35 40
UNS R20033 109 55 40
UNS N06210 100 45 45

Features

  • ASTM B622 seamless nickel and nickel-cobalt alloy pipe and tube for corrosive and high-temperature service.
  • Available in HASTELLOY C-22 (UNS N06022) and HASTELLOY C-276 (UNS N10276), two proven nickel-chromium-molybdenum alloys for aggressive chemical environments.
  • HASTELLOY C-22 offers superior resistance to oxidizing and non-oxidizing chemicals, with excellent protection against pitting, crevice corrosion, and stress corrosion cracking.
  • HASTELLOY C-276 is known for excellent weldability and broad resistance to many corrosive chemicals, including oxidizing and reducing acids, chlorides, and sour gas environments.
  • Seamless construction provides reliable pressure performance and consistent corrosion resistance for critical process systems.

Technical Specifications

Specification Value
Standard ASTM B622 Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube
Grade UNS N10001, UNS N10242, UNS N10665, UNS N12160, UNS N10675, UNS N10276, UNS N06455, UNS N06007, UNS N08320, UNS N06975, UNS N06002, UNS N06985, UNS N06022, UNS N06035, UNS N08135, UNS N06255, UNS N06058, UNS N06059, UNS N06200, UNS N06030, UNS N08031, UNS R30556, UNS N08535, UNS N06250, UNS N06060, UNS N06230, UNS N06686, UNS N10629, UNS N06210, UNS N10624, and UNS R20033
Manufacturing Process cold-finished of hot-finished
Seam Type Seamless
Pipe Size Outside Diameter (OD) Range: NPS 1/4″ -3″, Wall Thickness (WT) Range: SCH10, SCH40, SCH80
Tube Size Outside Diameter (OD) Range: 13.72 -88.9mm, Wall Thickness (WT) Range: 1.65-7.62mm
Length 6000-12000mm
Delivery Condition Annealed
Inspection Certificate EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
 Test Chemical analysis, Tensile test, Flattening test, Expansion test, Hydrostatic test, Nondestructive testing (NDT), Intergranular corrosion test, Metallographic examination

Applications

  • Chemical processing systems, including reactors, heat exchangers, and columns.
  • Corrosive process piping and tubing for oxidizing and non-oxidizing acid service.
  • Pollution control, flue-gas, scrubber, and wastewater treatment equipment.
  • Acid handling, pickling, and mixed-chemical transfer lines where pitting and crevice corrosion resistance is critical.
  • Sour-gas and oil-and-gas service where chloride stress corrosion cracking and severe chemical attack must be resisted.
  • Process equipment exposed to seawater, brine, and other chloride-bearing environments.

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