ASTM A572/A572M-25 PDF

Full title and description

ASTM A572/A572M-25 — Standard Specification for High-Strength Low-Alloy Columbium‑Vanadium Structural Steel. Specifies requirements for five grades (42, 50, 55, 60, 65) of HSLA columbium‑vanadium structural steel in shapes, plates, sheet piling, and bars for use in bolted, riveted, and welded bridge and building construction; includes chemical, mechanical, delivery, and test-report requirements.

Abstract

This specification defines chemical composition (including controlled additions of columbium/niobium, vanadium, titanium, and nitrogen), tensile and yield properties, minimum elongation, maximum product sizes and thicknesses, and required tests and reporting for Grades 42 [290], 50 [345], 55 [380], 60 [415], and 65 [450]. It covers product forms (shapes, plates, sheet piling, bars) and provides guidance for welded applications and agreed notch‑toughness requirements where applicable. Units are provided in both inch‑pound and SI systems (to be used independently).

General information

• Status: Active
• Publication date: November 6, 2025
• Publisher: ASTM International
• ICS / categories: 77.140.10 (Heat‑treatable steels) / Structural steel standards
• Edition / version: A572/A572M‑25
• Number of pages: 4

Scope

Specifies requirements for five grades of high‑strength low‑alloy columbium‑vanadium structural steel in shapes, plates, sheet piling, and bars used in riveted, bolted, or welded construction for bridges and buildings. Establishes permitted product sizes/thicknesses, alloy and chemical limits, mechanical property minima (yield, tensile, elongation), testing and reporting requirements, and special provisions for weldability and notch toughness (when negotiated).

Key topics and requirements

• Grades and minimum strengths: Grade 42 [290], 50 [345], 55 [380], 60 [415], 65 [450] (values in MPa shown in brackets).
• Chemical composition requirements, including permitted types and limits for columbium/niobium, vanadium, titanium, nitrogen, and other alloying elements.
• Mechanical property requirements: minimum yield strength, tensile strength, and specified minimum elongation.
• Product forms covered: structural shapes, plates, sheet piling, and bars, with maximum thickness/size limits by grade.
• Weldability guidance and requirement to use appropriate welding procedures; notch‑toughness requirements when required are to be agreed between purchaser and producer.
• Testing and inspection: tension tests, chemical analysis, and reporting of alloy content and heat/process information; dual unit system (inch‑pound and SI) to be used independently.
• Delivery, marking, and mill test report requirements, including identification of alloy type (Type 1, 2, 3, or 5) when applicable.

Typical use and users

Used by structural engineers, bridge and building designers, steel fabricators, mill producers, material procurement specialists, inspectors, and contractors specifying or supplying HSLA structural steel for load‑bearing members (beams, columns, plates, sheet piling, and bars) where higher strength and controlled alloying are required.

Related standards

Commonly cross‑referenced ASTM standards include: A6/A6M (General requirements for steel products), A36/A36M (Carbon structural steel), A588/A588M (weathering steel — note: not a direct substitute without agreement), A709/A709M (structural steel for bridges), A370 (Test methods and definitions for mechanical testing of steel products), and A992 (structural shapes). Users should check purchaser/supplier agreements and project specifications for additional referenced or mandatory standards.

Keywords

ASTM A572, A572/A572M‑25, HSLA, columbium, niobium, vanadium, titanium, structural steel, high‑strength, Grades 42/50/55/60/65, plates, shapes, sheet piling, bars, weldability, tensile requirements, notch toughness.

FAQ

Q: What is this standard?

A: ASTM A572/A572M‑25 is the ASTM International specification that sets chemical and mechanical requirements for high‑strength low‑alloy columbium‑vanadium structural steel used in shapes, plates, sheet piling, and bars.

Q: What does it cover?

A: It covers five grades (42, 50, 55, 60, 65), allowable alloying elements and limits, tensile and yield strength minima, elongation requirements, product size/thickness limits, testing and reporting, and provisions for welded and bolted/riveted construction. Notch toughness requirements are included when specified between purchaser and producer.

Q: Who typically uses it?

A: Structural engineers, bridge and building designers, fabricators, steel mills, material purchasers, quality inspectors, and contractors working with high‑strength structural steel.

Q: Is it current or superseded?

A: Current. The active edition is A572/A572M‑25, published November 6, 2025.

Q: Is it part of a series?

A: It is part of ASTM's steel product specifications and is commonly used alongside other ASTM structural steel standards (for example A6/A6M, A36/A36M, A588/A588M, A709/A709M, and related test method standards such as A370).

Q: What are the key keywords?

A: HSLA, columbium/niobium, vanadium, structural steel, high‑strength, A572, grades 42/50/55/60/65, plates, shapes, sheet piling, bars, weldability, tensile strength, yield strength.