ASTM A615/A615M-25 PDF

Full title and description

ASTM A615/A615M-25 — Standard Specification for Deformed and Plain Carbon‑Steel Bars for Concrete Reinforcement. Specifies requirements for deformed and plain carbon‑steel reinforcing bars supplied in cut lengths and coils, including grades, chemical composition, mechanical properties, required tests, marking, and dimensional designations (available in both inch‑pound and SI units).

Abstract

This specification defines materials, grades, sizes, and test requirements for hot‑rolled deformed and plain carbon‑steel bars used as reinforcement in concrete. It covers heat identification and analysis, tensile and ductility requirements, deformation characteristics for bond, marking, optional alternate sizes, and guidance on welding and splicing for certain grades. Grades include a range of minimum yield strengths and specific acceptance criteria to ensure consistent performance in reinforced concrete applications.

General information

• Status: Active (current version).
• Publication date: November 5, 2025 (designation A615/A615M-25).
• Publisher: ASTM International.
• ICS / categories: ICS 77.140.15 (reinforcing bars / steel reinforcement).
• Edition / version: A615/A615M-25.
• Number of pages: 10.

Scope

Applies to deformed and plain carbon‑steel bars in cut lengths and coils for concrete reinforcement. The standard covers standard sizes and number designations, chemical composition limits, required mechanical properties (yield, tensile strength, elongation), required tests (tension, bend, deformation), marking, and optional annexes for alternate bar sizes and other applications. The specification is published as dual units (A615 inch‑pound and A615M SI) and includes provisions and notes about limitations such as weldability and recognition of very large bar sizes by design codes.

Key topics and requirements

• Defined product: hot‑rolled deformed and plain carbon‑steel bars for concrete reinforcement (cut lengths and coils).
• Designated grades by minimum yield strength (e.g., Grade 40 [280 MPa], Grade 60 [420 MPa], Grade 80 [550 MPa], Grade 100 [690 MPa]).
• Chemical composition and heat identification requirements (carbon, manganese, phosphorus, sulfur limits and heat analysis).
• Mechanical property requirements: specified yield and tensile strengths, elongation/ductility limits, and applicable ratios (notably the lower tensile/yield ratio for Grade 100).
• Mandatory tests: tensile tests, bend tests, deformation/bond characteristics; sampling and acceptance criteria.
• Marking and tagging requirements for final products to permit traceability to heat and grade.
• Provisions for alternate sizes (Annex A1) and additional applications (Annex A2) when specified by the purchaser.
• Guidance and cautions on welding and splice requirements — reference to appropriate welding code recommended for welded applications.
• Dual‑unit publication: separate inch‑pound (A615) and SI (A615M) values; units treated independently.

Typical use and users

Used by structural and civil engineers, rebar manufacturers, fabricators, precast concrete producers, general contractors, construction inspectors, testing laboratories, building officials, and materials procurement specialists who require standardized mechanical, chemical, and dimensional requirements for reinforcement bars used in concrete construction.

Related standards

Commonly used alongside reinforced concrete design and construction codes and other ASTM standards, for example: A615/A615M earlier editions, ASTM A706 (low‑alloy steel bars for concrete reinforcement), ASTM A1035 (corrosion‑resistant high‑strength reinforcement), AWS D1.4 (welding guidance for reinforcing steel), and design codes such as ACI 318 which provide splicing and detailing requirements. Users should check applicable national and local codes for compatibility.

Keywords

ASTM A615, A615M, rebar, reinforcing bar, deformed bars, plain bars, carbon‑steel, yield strength, tensile strength, bend test, heat analysis, marking, Grade 40, Grade 60, Grade 80, Grade 100, splices, weldability.

FAQ

Q: What is this standard?

A: ASTM A615/A615M-25 is the ASTM International standard specification that sets requirements for deformed and plain carbon‑steel bars used as reinforcement in concrete (available in inch‑pound and SI versions).

Q: What does it cover?

A: It covers sizes, grades, chemical composition, mechanical properties (yield, tensile, elongation), required tests (tensile, bend, deformation), marking/traceability, and optional annexes for alternate sizes and other applications.

Q: Who typically uses it?

A: Structural/civil engineers, rebar manufacturers and fabricators, contractors, testing labs, and building officials for procurement, quality control, and design coordination involving reinforcing steel.

Q: Is it current or superseded?

A: The A615/A615M-25 edition is the current active ASTM version (published November 5, 2025). Users should confirm they are using the active edition for procurement and compliance.

Q: Is it part of a series?

A: Yes — A615/A615M is published in periodic revisions; related ASTM reinforcement standards (for alternative chemical or mechanical requirements, weldable grades, corrosion‑resistant types, and wire reinforcement) form a family of standards covering reinforcing steel products and their specific applications.

Q: What are the key keywords?

A: Rebar, reinforcing bar, deformed bar, plain round, carbon‑steel, grades 40/60/80/100, yield strength, tensile strength, ASTM A615, A615M, marking, splices.