Hastelloy
SSM offers a range of hastelloy products such as pipes, fittings, flanges, fasteners, plates, and bars.
Hastelloy
Hastelloy products manufactured by SSM are nickel-based alloys that are extensively utilized in demanding environments due to their exceptional corrosion resistance and high-temperature strength. Hastelloy alloy, comprising nickel, chromium, and molybdenum, exhibits outstanding performance in both oxidizing and reducing environments, particularly when faced with acids, chlorides, moisture, and other corrosive chemicals.
Hastelloy comes in various grades, with Hastelloy C-276 and Hastelloy C-22 being the most common. Its exceptional performance has led to widespread use in the chemical, petroleum, natural gas, pharmaceutical, aerospace, and other industries.ngs, flanges, fasteners, plates, and bars.
You can refer to the following ASTM specifications to choose products that suit your needs:
| Product Types | ASTM Specifications | Common Grades |
| Steel Pipes | ASTM B619 / ASTM B622 | Hastelloy C276/ Hastelloy C22 / Hastelloy B2 |
| Pipe Fittings | ASTM B366 | |
| Flanges | ASTM B564 | |
| Fasteners | ASTM B574 | |
| Plates | ASTM B575 / ASTM B333 | |
| Bars | ASTM B574 / ASTM B335 |
We can provide hastelloy products according to ISO, EN, JIS, and GB standards. Please reach out to us for additional technical support.
Hastelloy Products We Supply
SSM’s product range comprises steel pipes, pipe fittings, flanges, fasteners, plates, and bars. We provide a wide range of standard and custom products to fulfill your various requirements.
Hastelloy Pipes
SSM provides a wide variety of seamless and welded steel pipes and tubes manufactured from Hastelloy C276, Hastelloy C22, Hastelloy B2, and other alloys.
Hastelloy Pipe Fittings
SSM offers a wide range of forged butt-weld, socket-weld, and threaded fittings in Hastelloy C276, Hastelloy C22, Hastelloy B2, and other alloys.
Hastelloy Flanges
SSM offers a wide range of butt-welding flanges, socket flanges, slip-on flanges, threaded flanges, blind flanges, etc., made of Hastelloy C276, Hastelloy C22, Hastelloy B2, and other alloys.
Hastelloy Fasteners
SSM provides a wide range of bolts, nuts, washers, and more manufactured from Hastelloy C276, Hastelloy C22, Hastelloy B2, and other alloys.
Hastelloy Plates
SSM offers a variety of plates, sheets, strips, and coils made of Hastelloy C276, Hastelloy C22, Hastelloy B2, and other alloys.
Hastelloy Bars
SSM provides a wide variety of round bars, square bars, hexagon bars, and flat bars made from Hastelloy C276, Hastelloy C22, Hastelloy B2, and other alloys.
Classification of Hastelloy
Hastelloy alloys can be classified into several types based on their chemical composition and application characteristics. The Hastelloy B series, which is primarily made up of nickel and molybdenum, exhibits excellent resistance to acid corrosion, particularly to sulfuric acid and hydrochloric acid. On the other hand, the Hastelloy C series, primarily composed of nickel, chromium, and molybdenum, offers a broad range of corrosion resistance and is suitable for use in strong acid and alkali environments. The performance of the representative grades is outlined in the table below.
Chemical Composition of Hastelloy C276, C22, and B2
| Element | Hastelloy C276 (%) | Hastelloy C22 (%) | Hastelloy B2 (%) |
| Nickel (Ni) | Balance (approx. 57%) | Balance (approx. 56%) | Balance (approx. 66%) |
| Chromium (Cr) | 14.5-16.5 | 20.0-22.5 | 1.0 max |
| Molybdenum (Mo) | 15-17 | 12.5-14.5 | 26-30 |
| Iron (Fe) | 4-7 | 2.0-6.0 | 2.0 max |
| Tungsten (W) | 3-4.5 | 2.5-3.5 | – |
| Cobalt (Co) | ≤ 2.5 | ≤ 2.5 | 1.0 max |
| Manganese (Mn) | ≤ 1 | ≤ 0.5 | 1.0 max |
| Vanadium (V) | ≤ 0.35 | ≤ 0.35 | 0.35 max |
| Silicon (Si) | ≤ 0.08 | ≤ 0.08 | 0.1 max |
| Carbon (C) | ≤ 0.01 | ≤ 0.015 | 0.02 max |
| Phosphorus (P) | – | ≤ 0.02 | 0.04 max |
| Sulfur (S) | ≤ 0.03 | ≤ 0.02 | 0.03 max |
Physical Properties of Hastelloy C276, C22, and B2
| Property | Hastelloy C276 | Hastelloy C22 | Hastelloy B2 |
| Density | 8.89 g/cm³ | 8.69 g/cm³ | 9.22 g/cm³ |
| Melting Point | 1370-1425°C | 1325-1370°C | 1330-1380°C |
| Elastic Modulus | 205 GPa | 205 GPa | 205 GPa |
| Poisson’s Ratio | 0.32 | 0.32 | 0.31 |
| Specific Heat | 427 J/(kg·K) (at 300K) | 419 J/(kg·K) (at 300K) | 427 J/(kg·K) (at 300K) |
| Thermal Conductivity | 10.2 W/(m·K) (at 300K) | 9.1 W/(m·K) (at 300K) | 9.1 W/(m·K) (at 300K) |
| Thermal Expansion Coefficient | 11.0 µm/(m·K) (20-1000°C) | 12.8 µm/(m·K) (20-1000°C) | 10.4 µm/(m·K) (20-1000°C) |
Mechanical Properties of Hastelloy C276, C22, and B2
| Property | Hastelloy C276 | Hastelloy C22 | Hastelloy B2 |
| Tensile Strength | 690 MPa | 690 MPa | 760 MPa |
| Yield Strength | 283 MPa | 310 MPa | 345 MPa |
| Elongation | 40% | 50% | 40% |
Advantages and Disadvantages of Hastelloy
Understanding the advantages and disadvantages of hastelloy alloy, and comparing it with other alloys, allows you to select products that are suitable for specific applications and meet cost requirements.
Advantages：Hastelloy alloy offers excellent corrosion resistance, making it capable of withstanding strong acids, alkalis, salt water, and oxidizing media. It is well-suited for use in harsh industrial environments. Additionally, it maintains good mechanical properties and chemical stability at high temperatures, and some Hastelloy alloys also exhibit good wear resistance.
Disadvantages：Compared with general stainless steel, Hastelloy alloy is more expensive. Some types of Hastelloy alloy require special welding technology and process control to avoid problems such as cracking in the heat-affected zone.
Applications of Hastelloy
- Chemical Processing
- Oil and Gas Industry
- Aerospace and Defense
- Pharmaceutical and Biotechnology
- Pulp and Paper Industry
- Environmental Control
- Food and Beverage Industry
Hastelloy Specifications
Specialty Metals Products Provided by SSM: Hastelloy Pipe, Valves, Fittings & Flanges:
| Trade Name | Seamless Welded Pipe/ Tube | Welded Pipe | Welded Tube | Buttweld Fittings | Flanges | Forged Fittings | Forged Valves | Cast Valves |
| Hastelloy B UNS N10001 | B/SB622 | B/SB619 | B/SB626 | B/SB366 | / | / | / | A/SA494 |
| Ni-Mo | Ni-Mo | Ni-Mo | WPHB | N12MV | ||||
| UNS N30012 | ||||||||
| Hastelloy B-2 UNS N10665 | B/SB622 | B/SB619 | B/SB626 | B/SB366 | B/SB564 | B/SB564 | B/SB564 | A/SA494 |
| Ni-Mo | Ni-Mo | Ni-Mo | WPHB-2 | Ni-Mo | Ni-Mo | Ni-Mo | N7M | |
| UNS J30007 | ||||||||
| Hastelloy B-3 UNS N10675 | B/SB622 | B/SB619 | B/SB626 | B/SB366 | B/SB564 | B/SB564 | B/SB564 | / |
| Ni-Mo | Ni-Mo | Ni-Mo | WPHB-3 | Ni-Mo | Ni-Mo | Ni-Mo | ||
| Hastelloy C-276 UNS N10276 | B/SB622 | B/SB619 | B/SB626 | B/SB366 | B/SB564 | B/SB564 | B/SB564 | A/SA494 |
| Low C | Low C | Low C | WPHC276 | Low C | Low C | Low C | CW12MW | |
| Ni-Cr-Mo | Ni-Cr-Mo | Ni-Cr-Mo | Ni-Mo-Cr | Ni-Mo-Cr | Ni-Mo-Cr | UNS N30002 | ||
| Hastelloy C-4 UNS N06455 | B/SB622 | B/SB619 | B/SB626 | B/SB366 | B/SB564 | B/SB564 | B/SB564 | A/SA494 |
| Low C | Low C | Low C | WPHC4 | Low C | Low C | Low C | CW2M | |
| Ni-Cr-Mo | Ni-Cr-Mo | Ni-Cr-Mo | Ni-Mo-Cr | Ni-Mo-Cr | Ni-Mo-Cr | UNS N26455 | ||
| Hastelloy C-22 UNS N06022 | B/SB622 | B/SB619 | B/SB626 | B/SB366 | B/SB564 | B/SB564 | B/SB564 | A/SA494 |
| Low C | Low C | Low C | WPHC22 | Low C | Low C | Low C | CX2MW | |
| Ni-Cr-Mo | Ni-Cr-Mo | Ni-Cr-Mo | Ni-Mo-Cr | Ni-Mo-Cr | Ni-Mo-Cr | UNS N26022 | ||
| Hastelloy G UNS N06007 | B/SB622 | B/SB619 | B/SB626 | B/SB366 | / | / | / | / |
| Ni-Cr-Fe-Mo-Cu | Ni-Cr-Fe-Mo-Cu | Ni-Cr-Fe-Mo-Cu | WPHG | |||||
| Hastelloy G-2 UNS N06975 | B/SB622 | B/SB619 | B/SB626 | / | / | / | / | / |
| Ni-Cr-Fe-Mo-Cu | Ni-Cr-Fe-Mo-Cu | Ni-Cr-Fe-Mo-Cu | ||||||
| Hastelloy G-3 UNS N06985 | B/SB622 | B/SB619 | B/SB626 | B/SB366 | / | / | / | / |
| Ni-Cr-Fe-Mo-Cu | Ni-Cr-Fe-Mo-Cu | Ni-Cr-Fe-Mo-Cu | WPHG-3 | |||||
| Hastelloy X UNS N06002 | B/SB622 | B/SB619 | B/SB626 | B/SB366 | / | / | / | / |
| Ni-Cr-Mo-Fe | Ni-Cr-Mo-Fe | Ni-Cr-Mo-Fe | WPHX |
Listed order of Alloy Types for B/SB619, B/SB622 and B/SB626 ( Ni-Cr-Mo ) versus B/SB564 ( Ni-Mo-Cr ) is as shown in the 2013 Edition ASTM ANNUAL BOOK OF STANDARDS.
- The Following must be included with the ASTM designation and graded for the description to be complete:
WP (S) = Seamless
WP (W) = Welded
WP (WX) = Welded with 100% x-ray
WP (U) = Welded with 100% Ultrasonic examination
CR = Corrosion resistant in acordance with MSS SP-43 - Nickel Alloy Specifications especially in pipe and tube refer only to the UNS number for material identification. Classes and Grades are occasionally used to identify options for items such as NDT, heat treatment or different methods employed when welding with filler metal such as single welded or double welded. These options do not result in an additional UNS number in the nickel materials.
- Grades/Classes/Identification Symbols are shown in this table only when they are used for material identification.
- Data in this table (except for Valve Castings) was taken from the 2013 editions, Section One Volume 01.01 and Section Two Volume 02.04, of the annual book of ASTM Standards. Casting Specification Data was from Volume 01.02, same edition.
Related resources：https://www.usmetals.com/specialty-metals-hastelloy.html
Summary
Due to its excellent corrosion resistance, high-temperature resistance, and mechanical properties, the Hastelloy alloy has become an ideal material for many industrial applications. Understanding the different types of Hastelloy alloys and their applicable environments will help you select the most suitable materials under various complex and demanding conditions to ensure the efficient and safe operation of equipment. Using Hastelloy alloy’s characteristics, multiple industries can improve equipment’s reliability and production efficiency and promote the advancement and sustainable development of process technology.
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