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Hastelloy C22 C2000, B2, and B3 Pipes and Fittingss are high-performance nickel-based alloys engineered for maximum resistance to corrosion, oxidation, and chemical attack. These pipes are widely used in chemical processing, pharmaceutical, power generation, and marine industries, where extreme durability and chemical resistance are essential.

Hastelloy C22 C2000 is known for its outstanding resistance to oxidizing and reducing agents, including ferric and cupric chlorides, acetic and formic acids, and seawater. This makes it an ideal choice for chemical reactors, scrubbers, heat exchangers, and piping systems handling highly corrosive fluids.

Hastelloy C22, including its C2000 variants (B2 and B3), is a high-performance nickel-based alloy widely used in pipe fittings for critical industrial applications. These fittings are designed for environments that demand exceptional corrosion resistance and mechanical reliability. They are particularly suitable for chemical processing, marine, and pollution control industries, where aggressive media can compromise standard materials.

Hastelloy C22 and C2000 pipe fittings consist primarily of nickel (around 56%), chromium (22%), and molybdenum (13%), with minor additions of tungsten, iron, and cobalt. This unique composition enhances resistance to both oxidizing and reducing environments, allowing the fittings to perform exceptionally well against acids, chlorides, and other corrosive chemicals.

Hastelloy C22 C2000 B2 B3 Pipe Fittingss and Fittingss

Hastelloy B2 is formulated to resist hydrochloric acid in all concentrations and temperatures. It also provides excellent protection against hydrogen chloride, sulfuric acid, and phosphoric acid, making it suitable for pickling systems, chemical reactors, and vacuum processing equipment.

Hastelloy B3 improves upon B2 by offering enhanced thermal stability and better resistance to pitting, stress corrosion cracking, and thermal cycling. It is preferred in applications involving strong reducing agents and harsh chemical environments that demand both durability and long-term reliability.

C22/C2000 fittings provide excellent mechanical strength and durability. Typical tensile strength ranges from 690–760 MPa, with yield strength around 310–380 MPa. They also exhibit elongation values of 30–40%, which ensures flexibility under mechanical stress. These properties make the fittings reliable for high-pressure piping systems and critical process applications.

One of the most notable features of Hastelloy C22/C2000 fittings is their superior corrosion resistance. They resist pitting, crevice corrosion, and stress corrosion cracking, even in harsh chemical and chloride-rich environments. This makes them ideal for seawater systems, chemical transport pipelines, and industrial processing units.

Specification Table

Grade Standard Form Type Size Range Pressure Rating
Hastelloy C22 ASTM B366 / ASME SB366 Seamless / Welded Elbow, Tee, Reducer, Cap, Stub End 1/2" – 48" Class 150 – 2500
Hastelloy C2000 ASTM B574 / ASME SB574 Seamless / Welded Elbow, Tee, Reducer, Cap, Stub End 1/2" – 48" Class 150 – 2500
Hastelloy B2 ASTM B333 / ASME SB333 Seamless / Welded Elbow, Tee, Reducer, Cap, Stub End 1/2" – 48" Class 150 – 2500
Hastelloy B3 ASTM B575 / ASME SB575 Seamless / Welded Elbow, Tee, Reducer, Cap, Stub End 1/2" – 48" Class 150 – 2500

Chemical Composition (Typical ranges for SSS32760)

Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.

Grade C Mn Si Cr Fe Mo W Co Ni Cu Other Elements
Hastelloy C22 0.05 max 1.0 max 0.4 max 20.0 – 22.0 Balance 12.0 – 14.0 2.0 – 3.0 0.5 max 57.0 min 1.0 max Nb + Ta: 0.2 max
Hastelloy C2000 0.02 max 1.0 max 0.4 max 20.0 – 23.0 Balance 12.0 – 15.0 3.0 – 4.0 0.5 max 57.0 – 60.0 1.0 max Nb + Ta: 0.3 max
Hastelloy B2 0.01 max 1.0 max 0.3 max 1.0 max Balance 8.0 – 10.0 Ni: 62.0 min Cu: 1.0 max
Hastelloy B3 0.01 max 1.0 max 0.3 max 0.2 – 1.0 Balance 8.0 – 10.0 Ni: 62.0 min Cu: 0.5 – 1.0

Mechanical Properties (Typical)

Grade Condition Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Hardness (HB)
Hastelloy C22 Annealed 620 – 860 275 – 415 40 – 50 200 – 250
Hastelloy C2000 Annealed 650 – 900 300 – 450 35 – 45 210 – 260
Hastelloy B2 Annealed 620 – 850 275 – 410 40 – 50 200 – 240
Hastelloy B3 Annealed 630 – 870 280 – 420 38 – 48 205 – 245

Equivalent Grades

Hastelloy Grade UNS Number EN / DIN JIS Other Standards
Hastelloy C22 UNS N06022 2.4602 ASTM B366, ASME SB366
Hastelloy C2000 UNS N06200 ASTM B574, ASME SB574
Hastelloy B2 UNS N10665 2.4605 ASTM B333, ASME SB333
Hastelloy B3 UNS N10675 ASTM B575, ASME SB575

Dimension & Weight Chart (Selected common sizes)

Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.

Nominal Size (inch) DN Schedule Outside Diameter (mm) Wall Thickness (mm) Weight per Foot (kg/ft)
1/2" 15 Sch 10 21.3 2.77 0.62
1" 25 Sch 40 33.4 3.56 1.34
2" 50 Sch 40 60.3 3.91 2.72
4" 100 Sch 40 114.3 6.02 6.81
6" 150 Sch 40 168.3 7.11 11.43
8" 200 Sch 40 219.1 8.18 17.25
10" 250 Sch 40 273.0 9.27 24.57
12" 300 Sch 40 323.9 10.97 33.40

Types Of Hastelloy C22 C2000 B2 B3 Pipe Fittingss and Fittingss

Seamless Pipe

SS S32760 Seamless Pipe

Welded Pipe

SS S32760 Welded Pipe

ERW Pipe

SS S32760 ERW Pipe

EFW Pipe

SS S32760S EFW Pipe

Seamless Fittings

Low Temperature Carbon Steel A333S Seamless Fittings

Welded Fittings

S32760H Super Duplex Steel Welded Fittings

Capillary Fittings

S32760 Super Duplex Steel Capillary Fittings

Heat Exchanger Fittingss

S32760H Super Duplex Steel Heat Exchanger Fittingss

Frequently Asked Questions (FAQ)

1. What are Hastelloy C22, C2000, B2, B3 pipe fittings used for?

These pipe fittings are widely used in chemical processing, marine, pharmaceutical, and power generation industries where high corrosion resistance and durability are required at high temperatures.

2. What standards do these Hastelloy pipe fittings comply with?

They comply with ASTM and ASME standards such as ASTM B366 / ASME SB366 for C22, ASTM B574 / ASME SB574 for C2000, ASTM B333 / ASME SB333 for B2, and ASTM B575 / ASME SB575 for B3.

3. What grades are available for Hastelloy pipe fittings?

Available grades include C22, C2000, B2, and B3, each suitable for specific corrosion and temperature conditions.

Pipes & Fittingss Supplier

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