Grade |
Ni |
Cr |
Mo |
Fe |
C |
Si |
Co |
Mn |
P |
S |
UNS N10665 |
Balance |
≤1.00 |
26.00-30.00 |
≤2.00 |
≤0.02 |
≤0.10 |
≤1.00 |
≤1.00 |
0.040 |
0.030 |
UNS N10665/2.4617/Hastelloy B2 Chemical Composition
UNS N10665/2.4617/Hastelloy B2 Mechanical Properties
Grade |
Tensile Strength ksi(MPa) |
Yield Strength ksi(MPa) |
Elongation (%) |
UNS N10665 |
≥110(760) |
≥51(350) |
≥40 |
the ASTM B622 Nickel alloy seamless tube and pipe tolerance
UNS N10665/2.4617/Hastelloy B2 Applications
Alloy B2 is suitable for use in the chemical processing industry, specifically in areas where hydrochloric acid, phosphoric and sulfuric acid are used or processed. Alloy B2 has also been used in the production of pharmaceuticals, acetic acid, alkylation of ethylene and herbicides. Typical end use applications include pumps, valves, mechanical seals, rupture discs, flanges, fittings, tanks and vessels.
● Chemical processing
● Petro processing
● Welding products
● Oil and gas
● Pollution and waste
One of our Services--Testing
- EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
- Raw Materials Certificate
- 100% Radiography Test Report
- 100% PMI
- Heat Treatment Charts
- Third Party Inspection Report
- Surface roughness and size measurement
- Manufacturer Test Certificate( Impact Testing, Flatten, Spin,Curve, Hardness, Intergranular ,Point corrosions, Grain size, ET,UT, HT...)
- Laboratory Test Certificate from Govt. Approved Lab
- ........
One of our Services--End of Pipe and Tube
- BE : Beveled end
- BBE : Bevel both ends
- BLE : Bevel large end
- BSE : Bevel small end
- TOE / POE = Treaded One End / Plain One End
- TOE / BOE = Treaded One End / Beveled One End
- POE / BOE = Plain One End / Beveled One End
- TBE = Treaded Both Ends
- PBE = Plain Both Ends
One of our Services--Packing
- Ply Wooden Boxes
- PE Fabric Bundles
- Standard seaworthy export packing
- Plastic Bags, or as required
One of our Services--Marking
- Supplier / Manufacturer Name or Custom Logo - on request
- Specification
- Material Grade
- Nominal Size
- Schedule or Wall Thickness
- Method of Manufacturing (Seamless or Welded)
- Heat Number
Marked Pipe Sample: XTD ASTM B622 UNS N10665 SEAMLESS 42.2x 3.56*6000MM HEAT NO. 2023121205A15
UNS N10665/2.4617/Hastelloy B2 Material Summary
Alloy B2 Pipes and Tubes is a solid solution strengthened, nickel-molybdenum alloy, typically used in extreme reducing conditions. UNS N10665 Pipes and Tubes has significantly lower carbon, silicon and iron compared to its’ predecessor, Alloy B (UNS N10001), making the alloy less susceptible to decreased corrosion resistance in the weld zone, in the as-welded condition.
Alloy B2 is a nickel-molybdenum alloy with significant resistance to reducing environments, such as hydrogen chloride gas and sulphuric, acetic and phosphoric acids. Hastelloy B2 provides resistance to pure sulphuric acid and a number of non-oxidizing acids. The alloy should not be used in oxidizing media or where oxidizing contaminants are available in reducing media. Premature failure may occur if alloy B2 is used where ferric iron, cupric ion and free chlorides are present.
With a high nickel content, Hastelloy B2 is immune to chloride-induced stress corrosion cracking.
Standard download
ASTM B622 Standard Specification for Seamless Nickel and Nickel Cobalt Alloy Pipe and Tube