Hastelloy B-3 Round Bar

Chemical Composition

Chromium sits deliberately between 1.0 and 3.0% in this round bar, and that addition is what separates the UNS N10675 window from the earlier nickel-molybdenum grades. Consequently, molybdenum holds 27.0–32.0% while carbon stops at 0.01%, so the nickel-plus-molybdenum total of this round bar lands between 94.0 and 98.0%.

For every element measured against its B335 limit behind this round bar, open the composition breakdown kept on the Hastelloy B-3 material page.

Mechanical Properties

Minimum room-temperature values below come from the rod table of ASTM B335 for UNS N10675. Consequently, the ordered state and the section size govern final acceptance of Hastelloy B-3 round bar.

• ASTM B335 carries this grade inside a scope that reaches five nickel-molybdenum numbers, and its rod title means the table speaks in diameters from 7.94 mm through 88.9 mm. Besides, the hardness cell printed beside N10675 in Table 2 stands empty, so no hardness acceptance figure exists for us to quote. Consequently, work above that diameter window moves onto the ASTM B564 forging route, and we agree the test position there instead of assuming it.

Physical Properties

Reference data places the density of this round bar at 9.22 g/cm³, with a melting range that closes near 1418 °C. Moreover, the annealed matrix leaves this round bar essentially non-magnetic, and its elastic modulus settles near 216 GPa.

Meanwhile, the physical properties table on the Hastelloy B-3 material page holds the conductivity and expansion figures behind this round bar.

Heat Treatment

The water-quenched anneal is the specification-defining step behind this Hastelloy B-3 round bar, because Ni3Mo forms close to 650 °C and only a rapid quench after 1066 °C restores the corrosion resistance. Moreover, a section strained past roughly 7% at the outer fibre returns to that anneal before it can go back into a weld.

Standards

ASTM B335 governs this round bar under a title that names nickel-molybdenum rod, and the ASTM International document splits its two size clauses by delivery surface. Specifically, pickled or mechanically descaled stock runs below 19.05 mm while ground or turned stock runs above it. Therefore, the rod window for this round bar closes at 88.9 mm and heavier sections change document.

Finally, the full standards list on the Hastelloy B-3 material page adds the plate, tube, fitting and flange documents plus the Chinese designation behind this round bar.

Dimensions

Dimensions of Hastelloy B-3 round bar follow the route, the document and the order quantity. Therefore, typical supply ranges sit in the table below, so please confirm your sizes in the inquiry.

Available sizes of this Hastelloy B-3 round bar depend on the route, the document, the state and the lot size. Please confirm the size, section and length you need for this round bar in the inquiry.

ASTM B335 splits this grade by delivery surface rather than by grade, so anything quoted in the pickled band arrives mechanically descaled while the larger band arrives ground or turned. Consequently, tell us the finished diameter and the surface your shop expects.

Surface Finishes

The surface you order decides how this round bar behaves once it reaches a hydrogen chloride synthesis unit, an absorption tower or an acid regeneration loop. Moreover, most stock of this round bar leaves the yard solution annealed and pickled. Therefore, we confirm the finish and the straightness band on this Hastelloy B-3 round bar before we write the offer.

In addition, the surface finishes table recorded on the Hastelloy B-3 material page lists the remaining conditions quoted for this round bar.

Related forms from the same heat cover Hastelloy B-3 Round Rod, Hastelloy B-3 Square Bar and Hastelloy B-3 Threaded Rod when your round bar order needs them.