ACI PRC-439.4-25: Steel Reinforcement—Material Properties and U.S. Availability—Report

Description

The material properties of the various types of steel reinforcement produced for use for reinforced concrete in the United States are described. Types of steel reinforcement defined in this report include deformed reinforcing bars, plain and deformed wire, welded wire reinforcement, bar mats, and prestressing reinforcement. The requirements, restrictions, and testing information of the pertinent ASTM International (ASTM) specifications are reviewed. The availability of the various types and sizes of reinforcement in the United States is discussed.

Keywords:

bend tests; black bar reinforcement; deformed reinforcement; ductility; epoxy-coated reinforcement; galvanized reinforcement; low-carbon chromium reinforcement; material properties; prestressing steels; reinforced concrete; reinforcing steels; spiral reinforcement; stainless steel reinforcement; tensile strength; welded wire fabric; welded wire reinforcement; yield strength.

Document Details

Author: ACI Committee 439

Publication Year: 2026

Pages: 31

ISBN: 9781641953566

Categories: Reinforcement

Formats: Protected PDF/Web View

Table of Contents

CHAPTER 1—INTRODUCTION AND SCOPE, p. 2

1.1—Introduction, p. 2

1.2—Scope, p. 2

CHAPTER 2—DEFINITIONS, p. 2

CHAPTER 3—REINFORCING BARS, p. 2

3.1—Introduction, p. 2

3.2—Material properties, p. 2

3.3—Black bar reinforcement, p. 5

3.4—Epoxy-coated reinforcement, p. 7

3.5—Galvanized reinforcement, p. 11

3.6—Stainless steel reinforcement, p. 13

3.7—Low-carbon chromium steel reinforcement, p. 17

CHAPTER 4—PLAIN AND DEFORMED WIRE, p. 19

4.1—Introduction, p. 19

4.2—Material properties, p. 19

4.3—Wire size designation, p. 19

4.4—Availability, p. 20

4.5—Corrosion protection products, p. 20

CHAPTER 5—WELDED WIRE REINFORCEMENT, p. 20

5.1—Introduction, p. 20

5.2—Material properties, p. 20

5.3—Higher-strength welded wire reinforcement, p. 21

5.4—Welded wire reinforcement styles, p. 21

5.5—Availability, p. 21

5.6—Minimum quantity requirements, p. 21

5.7—Corrosion protection products, p. 22

CHAPTER 6—PRESTRESSING REINFORCEMENT, p. 22

6.1—Introduction, p. 22

6.2—Material properties, p. 22

6.3—Availability, p. 25

6.4—Corrosion protection products, p. 25

6.5—Other prestressing reinforcement, p. 25

CHAPTER 7—DEVELOPMENTS IN STEEL REINFORCEMENT, p. 25

CHAPTER 8—REFERENCES, p. 26

Authored references, p. 2A.8—Resistance to high temperatures, p. 40

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