HASTELLOY B3

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Stacked Hastelloy B3 round bars with visible markings for industrial applications.

Hastelloy B3 UNS N010675

Hastelloy B3 is an upgraded version of Hastelloy B2, designed to enhance thermal stability and maintain exceptional resistance to pitting, stress corrosion cracking, and knife-line attacks. It is particularly suitable for environments with a high concentration of reducing agents, making it a popular choice in the chemical processing and petrochemical industries.

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Specifications

PropertyValue/Specification
Alloy TypeNickel-Molybdenum (Ni-Mo) alloy
Density~8.89 g/cm³ (at 20°C)
Melting Point~1315°C (2400°F)
Heat TreatmentSolution annealed at 1065–1149°C (1950–2100°F)
Tensile Strength (R₀₅)700-1,000 MPa (varies with form and temperature)
Yield Strength (R₀₅)340 MPa (sheet), 325 MPa (forging/bar)
Elongation (A min)40% (minimum, varies with form)
Hardness (Rockwell B)85-95 HRB

Characteristics

Superior Corrosion Resistance

  • Particularly resistant to pitting, crevice corrosion, and stress corrosion cracking in a variety of aggressive environments.
  • Performs well in hydrochloric acid, sulfuric acid, and other reducing environments.

High Temperature Performance

  • Retains its strength and corrosion resistance even at elevated temperatures (up to 1000°C).

Good Weldability

  • Offers good weldability in various forms, especially when heat-treated properly to reduce the risk of sensitization and grain boundary corrosion.

Formability

  • Easily fabricated into various shapes, including plates, sheets, bars, rods, and pipes.

Standards

ASTM B333

——Sheet, Plate & Strip——

ASTM B335

——Billet, Rod & Bar——

ASTM B622

——Seamless Pipe & Tube——

ASTM B619

——Welded Pipe & Tube——

DIN

——NiMo16Cr15W——

AWS A5.14 ERNiMo-10

——Bare Welding Rods & Wire——

In Stock

Table showing the stock formats of alloy products including sheets, plates, pipes, bars, and custom forgings with detailed dimensions.
Feel free to reach out if you require customized services. We will provide you with pricing and availability within 24 hours.
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Data Sheet

Chemical Composition

ElementContent (%)
Nickel (Ni)Balance
Molybdenum (Mo)28.5 – 30.5
Iron (Fe)1.0 – 3.0
Chromium (Cr)1.0 – 3.0
Cobalt (Co)3.0 max
Tungsten (W)2.5 – 3.5
Manganese (Mn)3.0 max
Silicon (Si)0.10 max
Carbon (C)0.01 max
Phosphorus (P)0.04 max
Sulfur (S)0.03 max
Vanadium (V)0.20 max

Physical Properties

PropertyImperialMetric
Density0.333 lb/in³9.22 g/cm³
Electrical Resistivity (RT)53.8 μohm·in1.37 μohm·m
Thermal Conductivity (RT)78 Btu·in/h·ft²·°F11.2 W/m·°C
Specific Heat (RT)0.089 Btu/lb·°F373 J/kg·°C
Modulus of Elasticity (RT)31.4 x 10⁶ psi216 GPa
Melting Range2500-2585°F1370-1418°C

Corrosion Resistance

Excellent Resistance to Strong Acids

  • HASTELLOY® B-3® exhibits outstanding resistance to hydrochloric acid (HCl) and hydrobromic acid (HBr), making it ideal for use in environments where these acids are present.

Improved Stability in Reducing Environments

  • The alloy demonstrates superior stability when exposed to reducing acids, which are often aggressive and prone to cause corrosion in many other materials.

Stress Corrosion Cracking Resistance

  • HASTELLOY® B-3® is highly resistant to stress corrosion cracking (SCC) in chloride-bearing solutions, making it suitable for use in high-chloride environments such as chemical processing plants.

Performance in Fluoride-Bearing Media

  • The alloy performs well in environments that contain fluoride ions, which are known to attack many metals, including zirconium alloys.

General Corrosion Resistance

  • It offers excellent protection against general corrosion, even in environments that involve high concentrations of pure reducing acids.

Versatile Applications

  • Due to its outstanding corrosion resistance, HASTELLOY® B-3® is widely used in the chemical process industry (CPI), particularly in the construction of reaction vessels and equipment exposed to aggressive acids.

Mechanical Properties(Room Temperature)

PropertySheet (Thickness ≤ 65 mm)Forging/Bars (Thickness ≤ 90 mm)Condition
Tensile Strength (R₀₅ min)340 MPa325 MPaSolution Annealed
Tensile Strength (R₁₀ min)700-1,000 MPa700-950 MPaSolution Annealed
Yield Strength (R₀₅)340 MPa325 MPaSolution Annealed
Yield Strength (R₁₀)700-1,000 MPa700-950 MPaSolution Annealed
Elongation (A min)40%40%Solution Annealed

Mechanical Properties(Elevated Temperature)

PropertySheet (Thickness ≤ 65 mm)Forging/Bars (Thickness > 90 mm)Temperature (°C)
Tensile Strength (R₀₅)315 MPa300 MPa100°C
Tensile Strength (R₀₅)285 MPa275 MPa200°C
Tensile Strength (R₀₅)270 MPa255 MPa300°C
Tensile Strength (R₀₅)255 MPa240 MPa400°C

Welding and Fabrication

Welding Methods & Consumables

  • Common welding methods: TIG, MIG, SMAW, and SAW.
  • Filler metal: ERNiMo-10 or ENiMo-10 are recommended.

Preparation & Heat Treatment

  • Pre-weld cleaning is crucial to ensure proper weld quality.
  • Post-weld heat treatment is generally not required for Hastelloy B3, but if needed, use temperatures between 1400-1600°F (760-870°C).

Fabrication

  • Forming and machining are straightforward, with the material exhibiting low thermal expansion, which reduces distortion during fabrication.
  • Hastelloy B3 retains its excellent corrosion resistance even after welding, making it suitable for applications in chemical reactors, heat exchangers, and other demanding environments.

Applications

Aerospace
Automotive
Marine
Oil and Gas
Pharmaceutical
Chemical
Pollution Control
Welding

Customized Package

Effective packaging solutions are crucial for preserving the quality of stainless steel sheets during transportation. The image showcases neatly stacked sheets wrapped in green protective covers and secured with strong straps, ensuring they remain intact.
  • Oil-coated paper wraps our plates, providing protection against corrosion.
  • Plates are placed on wooden pallets and strapped to secure them, preventing shifting during transportation.
Secure packaging plays a vital role in maintaining the quality and integrity of metal pipes during storage and transportation. The image illustrates pipes wrapped in durable protective material to prevent surface damage and corrosion.
  • Thick woven plastic bags are used to bundle several bars and rods together.
  • Each bundle is carefully packed, with the weight not exceeding 1500 KG for safe handling.
Efficient packaging ensures the safe transportation of stainless steel and alloy tubes. The image displays robust wooden crates used to secure and protect the tubes, minimizing damage during transit.
  • Tubes and pipes are packed in air cushion film to shield them from dirt and scratches.
  • For extra protection, they are placed in wooden cases to prevent damage during transit.

Logistics

air freight
rail freight
sea freight

At AlloyXpert, sea transportation is the most commonly used method for the majority of our orders and is considered the default shipping mode. Therefore, our quotations are typically based on FOB, CFR, or CIF terms. For customers with urgent requirements, we also offer air transportation as an expedited shipping option. Please feel free to reach out for customized solutions based on your delivery needs.

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