ASME BPVC 2025 Section II part B PDF

Full title and description

ASME Boiler and Pressure Vessel Code (BPVC) 2025 — Section II, Part B: Materials — Metallic Materials Properties — B — includes the officially published material property tables and requirements for ferrous and nonferrous metallic materials used in construction of boilers, pressure vessels, and nuclear components. Part B of Section II provides chemical, mechanical, physical, and heat‑treatment property data and allowable stress or design properties when applicable, used in conjunction with other Parts of the BPVC for design, fabrication, inspection, and certification.

Abstract

This product page describes the ASME BPVC 2025 Section II, Part B, which compiles standardized material specifications and property tables for metallic materials. The part is intended to ensure consistency and safety in material selection and engineering calculations for boilers, pressure vessels, piping, and related components. It contains material composition limits, tensile properties, hardness, impact or toughness data where required, permissible heat treatments, and reference conditions for test specimens.

General information

• Status: Published / Current (2025 edition of ASME BPVC Section II)
• Publication date: 2025 (Part of the 2025 consolidated ASME BPVC update)
• Publisher: The American Society of Mechanical Engineers (ASME)
• ICS / categories: 23.020 (Boilers and pressure vessels); material specifications; mechanical engineering standards
• Edition / version: 2025 Edition — Section II, Part B
• Number of pages: Typically part of a larger volume; Part B content varies by printing — estimated 80–200 pages depending on formatting and included tables (user should consult the official ASME publication for exact page count)

Scope

Section II, Part B of the ASME BPVC covers standardized material properties and related requirements for metallic materials used in construction of boilers, pressure vessels, fittings, flanges, and associated components. It provides chemical compositions, mechanical properties (tensile strength, yield strength, elongation), hardness ranges, impact properties where applicable, and prescribed heat treatments and testing conditions. The part is used by designers, fabricators, and inspectors in conjunction with the rest of the BPVC to determine material suitability, allowable stresses, and to verify material conformance to ASME code requirements.

Key topics and requirements

• Standardized material designations and chemical composition limits for ferrous and nonferrous alloys.
• Mechanical property tables: tensile strength, yield strength, elongation, and reduction of area for listed materials and conditions.
• Hardness requirements and conversion guidance between hardness and tensile properties where provided.
• Specified heat treatments and tempering/annealing conditions required to achieve listed properties.
• Impact or toughness requirements and test temperatures when applicable for certain materials and applications.
• Reference testing methods, specimen conditions, and rounding/conversion rules for reported data.
• Material condition designators (e.g., normalized, quenched and tempered, annealed) and corresponding property tables.
• Notes on applicability: how Part B data is used with Section II, Part A (ferrous material specifications) and Part C/D where relevant.

Typical use and users

Engineers, material scientists, fabricators, welders, inspectors, code authorities, and procurement specialists use Section II, Part B when selecting materials and verifying compliance for pressure-retaining components. Typical applications include pressure vessel and boiler design, component qualification, material certification and acceptance testing, supplier material data sheet review, and supporting calculations for allowable stresses used in Section I/III/VIII design rules.

Related standards

Related documents and standards commonly referenced alongside ASME BPVC Section II, Part B include other Parts of ASME BPVC (Section II Part A, C, D), ASME Section I, III, and VIII design and fabrication sections, ASTM material specifications and test methods for reference test procedures, and ISO/EN material standards for cross‑reference of alloy grades and properties. Users should consult the BPVC and referenced standards for complete cross-references and normative requirements.

Keywords

ASME BPVC, Section II, Part B, metallic materials, material properties, tensile strength, hardness, chemical composition, heat treatment, pressure vessel materials, boilers, allowable stress, material tables, 2025 edition

FAQ

Q: What is this standard?

A: It is Part B of Section II of the ASME Boiler and Pressure Vessel Code (2025 edition), which contains standardized material property tables and requirements for metallic materials used in pressure equipment.

Q: What does it cover?

A: It covers material designations, chemical composition limits, mechanical properties (tensile, yield, elongation), hardness ranges, specified heat treatments, and any required impact/toughness data and test conditions needed for code compliance.

Q: Who typically uses it?

A: Designers, material engineers, fabricators, inspectors, auditors, and procurement professionals involved in the manufacture, inspection, and certification of boilers, pressure vessels, and related components.

Q: Is it current or superseded?

A: The information here describes the 2025 edition of ASME BPVC Section II, Part B. Users should verify against the official ASME publication to ensure they have the most current edition and any interim addenda or interpretations.

Q: Is it part of a series?

A: Yes — it is Part B of Section II of the ASME BPVC. Section II also includes Part A (ferrous material specifications), Part C (nonferrous material specifications), and Part D (test methods), among other BPVC sections and parts.

Q: What are the key keywords?

A: Metallic materials, material properties, ASME BPVC, Section II Part B, tensile properties, chemical composition, hardness, heat treatment, pressure vessels.