ASME SB575 Hastelloy C22 UNS N06022 for Sale

ASTM SB 575, or "Nickel-Chromium-Molybdenum-Tungsten Alloy (UNS N06022) Sheet, Strip, and Plate for Corrosion-Resistant Applications," specifies the chemical composition, mechanical properties, heat treatment schedule, dimensional tolerances, and other technical requirements for Hastelloy C22 (UNS N06022) alloy supplied in sheet, strip, and coil form.

SB 575 UNS N06022 Description

Hastelloy C22 alloy is renowned for its comprehensive corrosion resistance, effectively resisting pitting, crevice corrosion, and stress corrosion cracking. According to the SB 575 standard, solution heat treatment is required to achieve the specified mechanical properties.

As a result, SB 575 UNS N06022 alloy is widely used in industrial applications such as chemical process equipment, flue gas desulfurization systems, offshore platforms, desalination plants, pharmaceutical equipment, nuclear fuel processing, and waste incineration.

Element	Value ( wt%)
Ni	≥ 56.0
Cr	20.0 - 22.5
Mo	12.5 - 14.5
W	2.5 - 3.5
Fe	2.0 - 6.0
C	≤ 0.015
Mn	≤ 0.50
Si	≤ 0.08
P	≤ 0.02/ ≤ 0.040
S	≤ 0.02
Co	≤ 2.5
V	≤ 0.35

Physical Properties	Value
Density	8.69−8.9g/cm3
Melting Point	1325−1370°C
Magnetic Properties	Non-magnetic
Coefficient of Thermal Expansion	6.9×10−6/°C
Thermal Conductivity	10.1W/m\cdotpK
Elastic Modulus	206GPa

Parameters	Typical Value
Tensile Strength	724 MPa
Yield Strength	345 MPa
Elongation	67%
Hardness	About 87 HRB

UNS N06022 Hastelloy C22 Applications

Chemical Industry

Chemical Equipment, such as reactors and pipelines.

Desulfurization towers, flues, and other components.

Energy Industry

Deep-sea oil and gas extraction: Pipelines, valves, pumps, and other components.

Geothermal Energy Development: Geothermal well piping, heat exchangers, and other equipment.

Nuclear Power Industry: Containers and pipelines.

Marine Engineering

Seawater Treatment Equipment: Pumps, valves, and pipelines in seawater cooling systems and desalination equipment.

Offshore Platform Structures: Hastelloy C22 wire or sheet can be used for fasteners and support structures on offshore platforms.

The following describes the product forms and characteristics of ASME SB575 Hastelloy C22 UNS N06022 Sheet.

ASME SB575 Hastelloy C22 UNS N06022 Sheet Types

ASME SB575 Hastelloy C22 sheet typically refers to a thinner product with excellent plasticity and formability. It is suitable for components requiring deep drawing, bending, and other processes, such as vessel linings and gaskets.

ASME SB575 Hastelloy C22 plate typically refers to a thicker product (e.g., over 6 mm) with higher load-bearing capacity and structural strength. It is primarily used in the manufacture of the main structures of pressure-bearing equipment, such as reactor shells, towers, and large storage tanks.

ASME SB575 Hastelloy C22 coil strip is a thin, narrow product typically supplied in coil form. It is suitable for continuous automated production, such as bellows and cladding for composite panels.

In addition to basic form and size distinctions, special attention should be paid to the material's heat treatment.

According to ASME SB575, Hastelloy C22 alloy material is required to undergo solution heat treatment. This treatment dissolves the alloy uniformly, achieving a single austenitic structure, thereby optimizing its corrosion resistance and processing properties, and ensuring that the material meets the standard minimum mechanical properties.

Corrosion Resistance

ASME SB575 Hastelloy C22 effectively resists pitting, crevice corrosion, and stress corrosion cracking. It exhibits exceptional resistance to a wide range of harsh chemical environments.

Why Choose ASME SB575 Hastelloy C22

High-Temperature Stability and Mechanical Properties

ASME SB575 Hastelloy C22 maintains excellent mechanical properties and corrosion resistance even at elevated temperatures. It exhibits high strength in the annealed state, along with excellent ductility and toughness.

The alloy withstands a wide range of corrosive environments up to approximately 677°C. This high-temperature stability, combined with its corrosion resistance, makes it ideal for industrial environments such as chemical reactors, flue gas desulfurization systems, and incinerators.

Machinability and Weldability

ASME SB575 Hastelloy C22 alloy exhibits excellent machinability and weldability. Even in the welded state, the alloy is suitable for most chemical processing applications, significantly reducing risk and cost. Furthermore, the alloy exhibits good hot workability. These properties make it suitable for use in the manufacture of reactors, heat exchangers, piping systems, and more.

Wide Range of Applications

The material's compliance with the ASME SB575 standard is a key guarantee of its reliability. This alloy is widely used in numerous critical industries, including the chemical and petrochemical industries, environmental protection, power generation, offshore engineering, pharmaceuticals, and waste management.

Although its procurement cost may be higher than that of ordinary stainless steel, its long life and high reliability in harsh environments often offer a cost-effective advantage.

Clarify Requirements and Specifications

Before purchasing, first clarify your requirements and product specifications.

Product Form and Dimensions: The ASME SB575 standard primarily covers Hastelloy C-22 sheet, strip, and plate. You need to specify the product's specific form, thickness, width, length, and other dimensional parameters.

Special Conditions: Depending on subsequent processing and intended use, specify whether the material is annealed or in another condition.

Certificate of Compliance: Suppliers must provide complete material test reports confirming compliance with the ASME SB575 standard.

Buying ASME SB575 Hastelloy C22 UNS N06022 Tips

Supplier Screening

Qualifications and Certifications: Prioritize suppliers with ASME certification. ASME certification indicates that the manufacturer has the necessary technical capabilities and equipment, and their products will bear the ASME certification mark, a symbol of quality assurance.

Quality and Capabilities: Evaluate the supplier's robust and stable quality assurance system and examine whether their production capacity can meet your order requirements and delivery timelines.

Reputation and Price: Examine the supplier's reputation within the industry and select partners with stable operations and strong financial standing. Pricing should be based on reasonable cost accounting, ensuring both product quality and market competitiveness.

Service and Support: A good supplier should provide excellent after-sales service and professional technical support.

Quality Control

Post-arrival quality verification is crucial.

Document Verification: Upon receipt, carefully review material test reports to ensure chemical composition and mechanical properties comply with ASME SB575 standards.

Physical Inspection: Verify that material identification markings are clear and complete, and consistent with quality documentation. Also, perform a visual inspection to check for obvious surface defects.

Third-Party Testing: For critical applications or large orders, consider commissioning a third-party testing agency to perform random testing on incoming materials to verify their composition and properties.

Quality Control

Procurement Tips

Based on the above analysis, the following procurement strategy recommendations are provided:

Clear Requirements: Clearly define your required material specifications, including product form, size, quantity, and any specific industry standards that must be met.

Multi-Channel Sourcing and In-Depth Evaluation: Identify potential suppliers through various channels, such as industry directories, B2B platforms, or directly contacting reputable manufacturers.

Request detailed product information, certification documents, and samples from suppliers for evaluation.

Value negotiation and contract clarity: clearly define technical specifications, acceptance criteria, delivery time, and payment methods in the contract.