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ASTM Standard Hastelloy B-2 Round Bar High Purity Nickel Alloy Round Rod with Custom Lengths

Certification	ISO, AISI, ASTM, GB, EN
Minimum Order Quantity	30 kg

Product Details

Model NO.	Hastelloy B-2	Shape	Round
Technique	Hot Rolled	Surface Treatment	Pickling
Diameter Range	5 Mm - 500 Mm	Length	100 Mm - 3000 Mm Standard; Custom Lengths Available
Surface Finish	Black, Bright Polished, Rough Turned, No.4 Finish, Matt Finish, BA Finish	Tensile Strength	≥760 MPa (110,000 Psi)
Yield Strength	≥350 MPa (52,000 Psi)	Elongation	≥40%
Density	9.2 G/cm³	Melting Point	1370°C (2550°F)
Temperature Limitation	Avoid Service Between 538°C-871°C (1000°F-1600°F)	Tolerance	H8-H13, K9-K12 Or Custom
Chemical Composition	Nickel (Ni): Bal., Molybdenum (Mo): 26.0-30.0, Iron (Fe): ≤2.00, Chromium (Cr): ≤1.00, Cobalt (Co): ≤1.00, Carbon (C): ≤0.02, Manganese (Mn): ≤1.00, Silicon (Si): ≤0.10, Phosphorus (P): ≤0.040, Sulfur (S): ≤0.030
Highlight	ASTM Standard Hastelloy B-2 Round Bar , High Purity Nickel Alloy Round Rod , Custom Lengths Nickel-Molybdenum Alloy Bar

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Product Description

ASTM Standard Hastelloy B-2 Round Bar

High purity nickel alloy round rods available in custom lengths for demanding industrial applications.

Product Specifications

Product Name	Hastelloy B-2 Round Bar
Diameter Range	10 - 350mm
Length Options	Custom cutting any length as requested
Surface Finishes	Bright, Black, Pickling, Polishing
Brand	DELTA
Services	Cutting, Polishing
Minimum Order Quantity	2 Kgs
Other Product Types	Bar, Strip, Coil, Pipe, Sheet, Plate, Wire, etc.
Packing	Wooden Box
Loading Port	Shanghai Port
Price Terms	EXW, FOB, CIF, CFR
Delivery Time	Within 12 days

Material Description

Product Introduction

Hastelloy B-2 round bar, designated as UNS N10665 and Werkstoff Nr. 2.4617, is a premium high-purity nickel-molybdenum (Ni-Mo) alloy rod engineered to excel in the most aggressive reducing environments. Developed by Haynes International in the 1960s, this alloy achieves exceptional corrosion resistance and thermal stability through stringent control of impurity elements—with carbon and silicon contents both limited below 0.01%—and a molybdenum concentration of 26-30% that forms the core of its anti-corrosion capability.

Our Hastelloy B-2 round bars comply with strict ASTM standards and feature fully customizable lengths, tailored to eliminate material waste in equipment fabrication. The high-purity composition minimizes intergranular precipitation, avoiding the brittleness issues common in lesser alloys when exposed to elevated temperatures. This makes the rods ideal for critical components where structural integrity and corrosion resistance are non-negotiable, spanning industries from chemical processing to nuclear engineering.

Technical Parameters

Parameter	Specification
Chemical Composition (Max/Range, %)	Nickel (Ni): Bal., Molybdenum (Mo): 26.0-30.0, Iron (Fe): ≤2.00, Chromium (Cr): ≤1.00, Cobalt (Co): ≤1.00, Carbon (C): ≤0.02, Manganese (Mn): ≤1.00, Silicon (Si): ≤0.10, Phosphorus (P): ≤0.040, Sulfur (S): ≤0.030
Diameter Range	5 mm - 500 mm (Precision tolerance options: H8-H13, K9-K12 or custom)
Length	100 mm - 3000 mm standard; Custom lengths available on request
Surface Finish	Black, bright polished, rough turned, No.4 finish, matt finish, BA finish
Mechanical Properties (Room Temperature)	Tensile Strength: ≥760 MPa (110,000 psi) Yield Strength (0.2% Offset): ≥350 MPa (52,000 psi) Elongation: ≥40%
Physical Properties	Density: 9.2 g/cm³ Melting Point: 1370°C (2550°F)
Temperature Limitation	Avoid service between 538°C-871°C (1000°F-1600°F) to prevent phase precipitation

Compliance Standards

Our Hastelloy B-2 round bars adhere to globally recognized standards, ensuring consistency and compatibility with international engineering requirements:

ASTM B335 / ASME SB335: Primary standard for nickel-alloy rod and bar, governing chemical composition, mechanical properties, and dimensional tolerances
UNS N10665: Unified Numbering System designation for global material identification
Werkstoff Nr. 2.4617: German material number for compliance with European engineering specifications
ISO 15848-1: Certified for sealing performance in critical applications like nuclear fuel processing

Similar Grades

While Hastelloy B-2 is unparalleled in reducing environments, these alternatives address specific application needs:

Hastelloy B-3 (UNS N10675): Enhanced version with optimized silicon and iron levels, improving weldability and resistance to intergranular corrosion
Hastelloy B-4 (UNS N10629): Features lower carbon and silicon content than B-2, delivering superior thermal stability and resistance to stress corrosion cracking
Alloy 600 (UNS N06600): Nickel-chromium alloy with excellent oxidation resistance but lower molybdenum content—suitable for milder reducing environments

Industrial Applications

The unique properties of Hastelloy B-2 round bars make them indispensable in harsh-service industries, with proven performance in:

Chemical Processing: Manufacture of hydrochloric acid recovery systems where service life exceeds 15 years—5-8 times longer than stainless steel

Nuclear Engineering: Pump and valve components for high-level radioactive waste treatment, with annual corrosion rates below 0.01mm

Environmental Technology: Wet flue gas desulfurization systems, tolerating chloride concentrations up to 50,000 ppm

Pharmaceuticals: Hydrogenation reactor internals, resisting corrosion from bromide-containing acetic acid while maintaining product purity

Petrochemicals: Catalyst regeneration equipment handling hot, chloride-rich hydrocarbons without stress corrosion failure

ASTM Standard Hastelloy B-2 Round Bar High Purity Nickel Alloy Round Rod with Custom Lengths

ASTM Standard Hastelloy B-2 Round Bar

High Purity Nickel Alloy Round Rod

Custom Lengths Nickel-Molybdenum Alloy Bar