Hastelloy B3 Flanges and Fittings

The primary function of the Hastelloy B-3 alloys is to survive under high-stress, high-temperature applications; the chief benefit of Hastelloy B-3 is its ability to resist hydrochloric acid at all temperatures and concentrations. This alloy also resists other vigorously corrosive agents extremely well.

Chemical Composition

GRADE NiMoCoWMnCrAlSiTiNbVTaZr
Alloy B-3Min27 10.1
Max653233330.050.10.20.20.20.020.01

Hastelloy B3 Flanges and Fitting, in common with most nickel alloys, offers excellent corrosion resistance. B3 flanges are particularly useful in chemical processes involving highly corrosive acids at temperatures that would normally produce rapid and catastrophic corrosion.

Mechanical Properties

GradeTensile StrengthYield StrengthElongation
Alloy B-3[MPA][MPA](% in 50mm) min
76035040

Hastelloy B-3 or N10675 Flange and Fitting have thermal stability greater than that of Hastelloy B-2 and also have excellent resistance to pitting, corrosion, and stress corrosion cracking. It has excellent resistance to hydrochloric acid at all concentrations and temperatures. 

Physical Properties

GradeDensity (g/cm3)Elastic Modulus (GPa)Coeff of Thermal Expansion (μm/m/°C)Thermal Conductivity (W/m.K)Electrical Resistivity (Ωμ.m)Elastic Modulus (GPa)Specific Heat ( J/Kg.K)Melting Range
0-100°C0-100°Cat 100°C
Alloy B-37.6922010.612.11.372163821370-1418

Specification of Flange 

The specified ASTM Standard Specification for Hastelloy B3 Flanges is ASTM B 564  with manufacturing standard such as ANSI/ASME B16.5, B16.47, BS4504, B 16.47 Series A & B, BS 10, EN-1092, DIN, etc.

According to application and uses in pipes and tubes Hastelloy B-3 flanges are broadly grouped into different sort, for example, Welding Neck Flange(WNF) & Long Welding Neck Flange(LWNF), Slip-on Flange(SOF), Lap Joint Flange(LJW), Blind Flange, Socket Welding Flange (SWF), Threaded Flange(THW), Plate Flange.

Hastelloy B-3 Flange for the most part has different face type, for example, Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), blind flange, with various class rating as 50 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16,din 2.4856 , 25, 40 & ANSI B16.5.

Specification of Fittings

The specified ASTM Standard Specification for Nickel Alloys Pipe Fitting is ASTM B 366, having Specific manufacturing Standards as ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, MSS-SP-49.

Hastelloy B-3 Fittings are categorically available are Elbow, Reducer, Tee, Coupling, Bend, Stub End, Cap, Nipple, Washer, Cross, Union etc which are available in different  types such as Welded, Seamless and Fabricated having thickness range from 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75.

Application

Hastelloy B3 Flanges and fittings are mostly used in highly corrosive environments and high temperature applications.   

  • Chemical processes
  • Vacuum furnaces
  • Mechanical components in reducing environments

NOTE: Hastelloy B-3 flanges and fittings  is a registered trademark of Haynes International Inc.

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