Hastelloy Metals and Alloys: A Comprehensive Guide

Hastelloy metals and alloys are known for their excellent corrosion resistance and versatility, making them essential materials for various industries. This guide comprehensively introduces Hastelloy, including its types, properties, applications, and more. Hopefully, it will provide guidance and suggestions for more manufacturers and engineers.

Hastelloy Alloy

What are Hastelloy Metals and Alloys?

Hastelloy metal is a trade name for a group of corrosion-resistant metal alloys consisting primarily of nickel and varying amounts of molybdenum, chromium, iron, cobalt, and other elements. These alloys are designed to withstand harsh chemical environments such as acidic attacks and oxidizing conditions, making them an excellent choice for the chemical, aerospace, and marine industries.

Hastelloy Metals and Alloys Grades

Different grades of Hastelloy alloys are tailored to meet specific industrial needs. The grades are categorized into three main types:

B-type Alloys

Characteristics: These alloys excel in resisting hydrochloric acid and other strongly reducing agents.
Examples: Hastelloy B, B-2, and B-3.
Applications: Commonly used in chemical processing industries for handling acids.

C-type Alloys

Characteristics: Known for their resistance to oxidizing and reducing agents, including wet chlorine and mixtures containing nitric acid.
Examples: Hastelloy C, C-22, C-276, and C-2000.
Applications: Used in reactors, heat exchangers, and scrubbers.

G-type Alloys

Characteristics: Designed to resist phosphoric acid and highly oxidizing acid environments.
Examples: Hastelloy G-30 and G-35.
Applications: Perfect for fertilizer production and pollution control equipment.

Hastelloy Alloys Data Sheet

Hastelloy Alloys Chemical Compositions

Element	B-type Alloys (%)	C-type Alloys (%)	G-type Alloys (%)
Ni	65–70	50–60	44–60
Mo	26–30	13–16	1.5–5
Cr	1–3	14–16	20–30
Fe	2–5	3–5	15–22
Co	≤2	≤2	≤2
Other Elements	Trace	Trace	Trace

The Mechanical Properties of Hastelloy

Property	B-type Alloys	C-type Alloys	G-type Alloys
Tensile Strength (MPa)	690–760	750–830	690–750
Yield Strength (MPa)	240–310	275–345	240–310
Elongation (%)	40–50	45–55	35–45
Hardness (Rockwell C)	20–30	25–35	20–28

The Physical Properties of Hastelloy

Property	Value
Density (g/cm³)	~8.9
Melting Range (°C)	1300–1350
Thermal Conductivity (W/m·K)	9–11
Coefficient of Thermal Expansion (µm/m·°C)	12–15
Electrical Resistivity (µΩ·m)	1.2–1.5

Characteristics of Hastelloy Alloys

Outstanding resistance to pitting and crevice corrosion.
Excellent weldability and formability.
Strong resistance to oxidation at elevated temperatures.

Special Properties of Hastelloy Alloys

Ability to withstand chlorine environments.
Resistant to stress corrosion cracking.
Exceptional performance in reducing and oxidizing conditions.

Benefits of Hastelloy Alloys

Longer service life in extreme conditions.
Reduced maintenance costs due to high durability.
Versatility across industries, ensuring cost-effective solutions.

Applications for Hastelloy Alloys

Chemical Processing: Reactors, heat exchangers, and distillation columns.
Aerospace: Turbine components and exhaust systems.
Marine: Seawater piping systems and heat exchangers.
Pharmaceutical: Sterilization equipment and reactors.

Costs of Hastelloy Alloys

Hastelloy metal alloy is a premium material. Prices vary depending on grade, market demand and processing complexity. For specific prices, please contact reliable suppliers and manufacturers.

Where to Source Hastelloy Metals and Alloys?

To procure high-quality Hastelloy alloys, partnering with reputable suppliers is essential. Huaxiao Metal offers a wide range of Hastelloy products with guaranteed quality, competitive pricing, and timely delivery. Contact us today to discuss your requirements and request a quote!

The Importance of Annealing in Hastelloy Manufacturing

Annealing is a critical step in Hastelloy production. This process relieves internal stresses, enhances ductility, and ensures the material’s microstructure is optimized for corrosion resistance. Proper annealing guarantees long-term performance and reliability.