ASTM B435-22

Overview

ASTM B435-22 is the standard specification developed by ASTM International for heat and corrosion resistant high temperature alloy plate, sheet, and strip. This standard addresses the requirements for the supply of rolled products in alloys UNS N06002, UNS N06230, UNS N12160, and UNS R30556. Intended primarily for applications requiring excellent heat resistance and general corrosion protection, ASTM B435-22 establishes the criteria for chemical composition, mechanical properties, and product dimensions. This internationally recognized standard supports industry needs for reliable, high-performance materials in demanding environments.

Key Topics

Material Types and Forms

• Specifies rolled products: plate, sheet, and strip.
• Covers both hot- and cold-rolled material, supplied in annealed and descaled or bright finish conditions.

Chemical Composition Requirements

• Materials must meet strict chemical requirements for elements such as nickel, chromium, iron, cobalt, molybdenum, tungsten, carbon, silicon, manganese, phosphorus, sulfur, columbium, tantalum, aluminum, zirconium, lanthanum, nitrogen, boron, and titanium.

Mechanical Properties

• Requirements for tensile strength, yield strength, and elongation are clearly defined for each alloy.
• Specific grain size requirements for annealed sheet and strip.

Dimensional and Quality Criteria

• Details on thickness, width, and length tolerances.
• Flatness, straightness, and squareness specifications.
• Mandatory marking of material with specification, alloy, heat number, manufacturer, and relevant data.

Documentation and Certification

• Outlines requirements for certification, test reports, and product analysis to assure compliance.
• Refers to safety, health, and environmental practice considerations, emphasizing the user’s responsibility to consult Safety Data Sheets (SDS).

Applications

Heat-Resistant and Corrosive Environments

• Suitable for manufacturing components in heat treating equipment, chemical processing, and furnace parts, where high-temperature stability and corrosion resistance are critical.
• Frequently used in the aerospace, petrochemical, and power generation industries for their robust mechanical and chemical stability.

Industrial Fabrication

• Employed in the production of flat-rolled alloys for gaskets, heat exchangers, combustion chambers, and pressure vessels.
• Ideal when designers and engineers require reliability in service temperatures and resistance to aggressive atmospheres.

Quality Assurance and Traceability

• Enables manufacturers and end-users to specify, procure, and certify materials with consistent properties.
• Supports regulatory compliance and safety assurance in critical infrastructure projects.

Related Standards

When working with ASTM B435-22, the following related specifications and standards are referenced to ensure comprehensive material and process control:

• ASTM B906 - General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
• ASTM B880 - Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys, and Cobalt Alloys
• ASTM B899 - Terminology Relating to Non-Ferrous Metals and Alloys
• ASTM E527 / B1015 - Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
• ASME SB-435 - Related Boiler and Pressure Vessel Code specification

These documents collectively support the accurate selection, processing, and certification of flat-rolled heat and corrosion resistant alloys.

Keywords: ASTM B435-22, high temperature alloy, heat resistant alloy, corrosion resistant alloy, plate, sheet, strip, UNS N06002, UNS N06230, UNS N12160, UNS R30556, nickel alloy, mechanical properties, chemical composition, industrial standards.