Hastelloy B3 Alloy ASTM B619 B622 B626 N10675 Alloys Seamless Tubes Tubing

Hastelloy B3 Alloy 2.4600 ASTM B619 B622 B626 N10675 is a nickel-molybdenum alloy with excellent resistance to pitting corrosion and stress corrosion cracking corrosion, thermal stability superior to that of Hastelloy Alloy B2. In addition, this nickel alloy has good resistance to knife-line and heat-affected zone attack. Alloy B3 also withstands sulfuric, acetic, formic and phosphoric acids, and other non-oxidizing media. Excellent resistance to hydrochloric acid at all concentrations and temperatures.

Hastelloy B3 Alloy N10675 2.4600 has poor corrosion resistance to oxidizing environments, therefore, it is not recommended for use in oxidizing media or in the presence of ferric or cupric salts because they may cause rapid premature corrosion failure. B3 alloy with outstanding resistance to hydrochloric and sulfuric acids in the as welded condition and excellent thermal stability.

Hastelloy B3 Alloy N10675 2.4600 alloy is an additional member of the nickel-molybdenum family of alloys with excellent resistance to hydrochloric acid at all concentrations and temperature. It also withstands sulfuric acid, acetic acid, formic acid and phosphoric acids, and other nonoxidizing media. B-3 alloy has a special chemistry designed to achieve a level of thermal stability greatly superior to that of its predecessors, e.g. Hastelloy B-2 alloy. B-3 alloy has excellent resistance to pitting corrosion, to stress-corrosion cracking and to knife-line and heat-affected zone attack.

ASTM B622 N10675 Hastelloy B3 Hastelloy B3 Alloy Chemical Composition:

Ni + Mo: 94.0-98.0

DIN 17744 2002 2.4600 NiMo29Cr Hastelloy B3 Alloy Chemical Composition:

DIN 17751 2002 NiMo29Cr 2.4600 Hastelloy B3 Alloy Mechanical Properties

ASTM B622 N10675 Hastelloy B3 Nickel Alloy Mechanical Properties

Hastelloy B3 Alloy Specifications

Characteristics of Hastelloy B3 Alloy N10675 2.4600

Maintains excellent ductility during transient exposures to intermediate temperatures;
Excellent resistance to pitting corrosion and stress-corrosion cracking;
Excellent resistance to knife-line and heat-affected zone attack;
Excellent resistance to acetic, formic and phosphoric acids and other non-oxidizing media;
Resistance to hydrochloric acid at all concentrations and temperatures;
Thermal stability superior to alloy B2.

Limiting Factors of Hastelloy B3 Alloy N10675 2.4600

Hastelloy B3 N10675 2.4600 has poor corrosion resistance to oxidizing environments, therefore, it is not recommended for use in oxidizing media or in the presence of ferric or cupric salts because they may cause rapid premature corrosion failure. These salts may develop when hydrochloric acid comes in contact with iron and copper. Therefore, if this nickel steel alloy is used in conjunction with iron or copper piping in a system containing hydrochloric acid, the presence of these salts could cause the alloy to fail prematurely.

Fabrication with Hastelloy B3 Alloy N10675

Problems associated with fabrication of alloy B-2 components should be minimized with Hastelloy B3 N10675 2.4600 due to its improved thermal stability. A low carbon content permits Hastelloy B3 N10675 2.4600 to be used in the as-welded condition. Hastelloy B3 N10675 has good overall forming and welding characteristics. This alloy can be forged or otherwise hot-worked, providing that it is held at 2250° F for a sufficient amount of time to bring the entire piece to temperature. Since it is a low carbon alloy, the use of lower hot finishing temperatures may be necessary to achieve grain size control. It may also be formed by cold working. Although it does work-harden somewhat rapidly, B-3 alloy components can be made using all common cold forming techniques. All common welding techniques may be used with Hastelloy B3 N10675 2.4600 , however, oxyacetylene and submerged arc welding processes are not recommended when the fabricated item is to be used in corrosive service.

Hastelloy B3 Alloy N10675 Corrosion Diagrams.

Hastelloy B3 Alloy Heat Treatment

All wrought forms of Hastelloy B3 N10675 alloy are furnished in the solution heat-treated condition unless otherwise specified. B-3 alloy is solution heat-treated at 1950°F (1065°C) and rapid quenched, except for bright annealed sheet or coil products which are heat-treated at 2100°F (1150°C) and cooled in hydrogen.

Available in Wrought Form

Hastelloy B3 Alloy N10675 alloy is available in the form of plate, sheet, strip, billet, bar, wire, pipe and tubing.

Hastelloy B3 Alloy N10675 Alloy Application

Hastelloy B3 alloy is suitable for use in all applications previously requiring the use of Hastelloy B-2 alloy. Like B-2 alloy, B-3 is not recommended for use in the presence of ferric or cupric salts as these salts may cause rapid corrosion failure. Ferric or cupric salts may develop when hydrochloric acid comes in contact with iron or copper.

Hastelloy B3 Alloy Physical Properties

Hastelloy B3 Alloy Thermal Properties