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Product Overview
Introduction To Hastelloy B-3 / Alloy B-3 / UNS N10675
MOKSH TUBES & FITTINGS LLP LLP is a reputed manufacturer, exporter, importer, and stockist of high-quality HASTELLOY B-3 (UNS N10675) products. We supply an extensive range of B-3 alloy materials such as Pipes & Tubes, Pipe Fittings, Flanges, Fasteners, Sheets, Plates, Coils, Bars, Welding Rods, Wire Mesh, and precision-engineered custom components. Built to withstand extreme corrosion, HASTELLOY B3 is the enhanced version of Hastelloy B-2, offering improved thermal stability and fabrication properties.
HASTELLOY B3 is a nickel-molybdenum alloy designed to handle strong reducing agents, including hydrochloric, hydrobromic, sulfuric, and phosphoric acids. Compared to B-2, it provides better resistance to pitting, stress corrosion cracking, and knife-line/heat-affected zone (HAZ) attack after welding. Its superior formability and weldability make it ideal for modern chemical processing and pickling systems.
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Chemical Composition
| Element | Composition (%) |
|---|---|
| Nickel | 65 (Balance) |
| Chromium | 1.5 |
| Molybdenum | 27.0 – 32.0 |
| Iron | 1.0 – 3.0 |
| 4 | |
| Cobalt | 3.0 |
| Manganese | 1.5 |
| Silicon | 0.10 |
| Carbon | 0.01 |
| Phosphorus | 0.2 |
| Sulfur | 0.01 |
Technical Composition
Physical Properties
| Property | Value |
|---|---|
| Density | 9.22 g/cm³ |
| Melting Point | 1370°C (2500°F) |
| Tensile Strength | 110,000 psi / 760 MPa |
| Yield Strength (0.2% Offset) | 52,000 psi / 355 MPa |
| Elongation | 40% |
Mechanical Properties
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength (@thickness 4.80–25.4 mm, 538°C/@thickness 0.189–1.00 in, 1000°F) | 760 MPa | 110,000 psi |
| Yield Strength (0.2% offset, @thickness 2.40 mm, 427°C/@thickness 0.0945 in, 801°F) | 355 MPa | 52,000 psi |
| Elastic Modulus (RT) | 210 GPa | 30,000 ksi |
| Elongation at Break (in 50.8 mm, @thickness 1.60–4.70 mm, 204°C/@thickness 0.0630–0.185 in, 399°F) | 40% | 40% |
| Hardness, Rockwell B (plate) | 88 | 88 |
Products in Hastelloy B3
MOKSH TUBES & FITTINGS LLP, we offer Hastelloy B-3 in a full range of product forms:
We offer Hastelloy B3 in a wide range of product forms, including:
Uses and Advantages
Outstanding resistance to hydrochloric acid and other reducing media
Superior performance after welding – no knife-line attack or HAZ corrosion
Excellent mechanical strength in high-temperature, high-acidity environments
Improved formability, weldability, and fabrication compared to B-2
Long service life in aggressive chemical settings
Applications of Hastelloy B3
HASTELLOY B-3 is a nickel-molybdenum alloy designed for exceptional resistance to hydrochloric acid and other strongly reducing chemicals. Known for its improved thermal stability and resistance to stress corrosion cracking over earlier B-series alloys, B-3 is ideal for highly corrosive environments where reliability is critical.
Chemical Processing Industry
Extensively used in reactors, heat exchangers, evaporators, and storage tanks handling hydrochloric acid, hydrobromic acid, sulfuric acid (under reducing conditions), and other aggressive chemical mixtures.
Pharmaceutical and Fine Chemical Manufacturing
Preferred for process vessels and piping where ultra-pure environments and resistance to reducing agents (including cleaning chemicals) are necessary.
Metal Pickling and Acid Regeneration Systems
Ideal for components exposed to highly concentrated hydrochloric acid during metal pickling or acid recovery processes
Electronics and Semiconductor Industry
Used in equipment exposed to highly corrosive chemical baths and etchants that require material purity and resistance to acid attack.
Agrochemical and Fertilizer Production
Deployed in reaction vessels and acid transfer lines where strong reducing media are present in the production of specialty chemicals and fertilizers.
Pulp and Paper Industry
Utilized in specific stages of chemical pulping and bleaching where resistance to reducing agents is required.
HASTELLOY B-3's with its outstanding corrosion resistance, particularly to hydrochloric acid, and improved fabricability, HASTELLOY B-3 is a reliable choice for mission-critical equipment exposed to some of the harshest reducing environments.
WHY CHOOSE US?
FAQ's
What is Hastelloy B-3 used for?
Hastelloy B-3 is ideal for chemical processing, pharmaceutical, metal pickling, and semiconductor industries where strong reducing acids like hydrochloric acid are used.
How is Hastelloy B-3 different from Hastelloy B-2?
B-3 has better resistance to stress corrosion cracking, pitting, and knife-line attacks after welding, along with superior thermal stability and formability.
Which products are available in Hastelloy B-3?
We offer pipes, tubes, sheets, plates, bars, flanges, fittings, fasteners, wire mesh, welding rods, and custom components.
What are the benefits of using Hastelloy B-3?
Hastelloy B-3 provides outstanding acid resistance, excellent weldability, high mechanical strength, and long lasting performance in harsh chemical environments.
Why choose MOKSH TUBES & FITTINGS LLP for Hastelloy B-3 products?
We provide decades of alloy expertise, certified quality, custom fabrication, traceable documentation, and fast international delivery for critical industrial applications.
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Partner with Moksh Tubes & Fittings LLP for reliable sourcing of HASTELLOY B-3 products. Get expert support, certified material, and on-time delivery for all your industrial needs.
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