Product category reference

Reinforcement wire, cord and strand

Reinforcement wire, cord and strand are high-strength steel products engineered to become part of another load-bearing material. They reinforce tires, conveyor belts, hoses or concrete rather than operating as exposed general-purpose wire.

This is an application-led category. Products may look similar in coil form, but their coatings, fatigue behavior, bond performance and dimensional controls are tied to the rubber or concrete system around them.

Buyers should treat these as separate engineered materials, not interchangeable high-strength wire. Each family is qualified for a particular host system, such as a tire compound, conveyor-belt construction, pressure hose or prestressed-concrete design.

In this guide

Product families

The main types of reinforcement wire, cord and strand

The category name covers products with different constructions and jobs. The sections below explain each family, where it is used and what a useful specification should contain.

Product family

Tire bead wire

What it is

Bronze- or brass-coated high-carbon wire formed into the bead bundle that anchors a tire to the rim.

Applications

Passenger, truck, off-road and specialty tire beads.

What to specify

Confirm diameter, tensile range, coating chemistry, adhesion, residual torsion, spool package and approval for the tire design.

Suppliers

We currently have 6 suppliers and 6 products in this product family. You can search for them here.

**Example product:** Bead Wire for Tires from Bekaert Hlohovec.

Product family

Tire steel cord

What it is

Fine high-carbon steel filaments twisted into cord with a brass coating designed to bond to rubber.

Applications

Radial tire belts, carcass reinforcement and other tire structures.

What to specify

Specify cord construction, filament diameter, coating, linear density, breaking load, fatigue performance and rubber adhesion method.

Suppliers

We currently have 3 suppliers and 9 products in this product family. You can search for them here.

**Example product:** Passenger Car Radial Tire Cord from Bekaert.

Product family

Hose & conveyor reinforcement cord

What it is

Steel cord or wire constructions made to carry pressure or tensile load inside rubber products.

Applications

Hydraulic hose, industrial hose, steel-cord conveyor belts and heavy material-handling belts.

What to specify

Confirm cord construction, elongation, adhesion, fatigue, corrosion protection and compatibility with the belt or hose compound.

Suppliers

We currently have 8 suppliers and 18 products in this product family. You can search for them here.

**Example product:** Conveyor Belt Steel Cord from Fasten International Limited.

Product family

Prestressed concrete strand

What it is

High-strength, usually seven-wire strand tensioned before or after concrete cures to place the concrete in compression.

Applications

Bridges, beams, slabs, sleepers, tanks and post-tensioned structures.

What to specify

Confirm strand size, strength grade, relaxation class, modulus, coating or sheathing, anchorage system and project standard.

Suppliers

We currently have 13 suppliers and 32 products in this product family. You can search for them here.

**Example product:** PC Strand from Fasten International Limited.

Applications

Where these products are used

Application conditions determine which product family and evidence matter. Start with the load, movement, environment and expected service life.

Tire bead

Wire locks the tire geometry to the rim and transfers forces at the bead seat.

Usually considered: Tire bead wire

Tire belt and carcass

Cord controls shape, strength and fatigue inside a rubber composite.

Usually considered: Brass-coated tire steel cord

Hose and conveyor belt

Cord carries pressure or longitudinal tension while bonded into rubber.

Usually considered: Hose wire and conveyor-belt cord

Prestressed concrete

Strand is tensioned to improve concrete performance under service loads.

Usually considered: Low-relaxation PC strand

Compare common types

The differences that change the application

Use this as an orientation guide. Final selection should follow the equipment, project or product specification.

Type	Construction	Typical use	Confirm before buying
Tire bead wire	Single coated high-carbon wire	Anchoring tire to rim	Coating adhesion and bead-forming behavior
Tire steel cord	Multiple fine filaments twisted into cord	Tire belt and carcass reinforcement	Cord construction and rubber adhesion
Conveyor-belt cord	High-strength cord sized for belt tension	Long, high-capacity conveyor belts	Elongation, fatigue and splice system
Hose reinforcement wire	Wire or cord for braiding or spiraling	Pressure hose	Fatigue, adhesion and pressure design
PC strand	Seven high-strength wires	Prestressed concrete	Strength, relaxation and project standard

Standards and certification

System approval is part of the product

Reinforcement materials are qualified with the composite or structural system that uses them. A generic material certificate may be necessary, but it is rarely sufficient by itself.

ASTM A416/A416M

Specification for low-relaxation seven-wire steel strand used in prestressed concrete.

EN 10138 series

European requirements for prestressing steels, including wire and strand.

ASTM A1074

Specification for hot-dipped galvanized steel strand used in prestressed concrete applications.

Customer qualification

Tire, hose and conveyor manufacturers often use proprietary adhesion, fatigue and production-approval tests.

Example products and suppliers

See how these products appear in supplier catalogs

The examples below connect the category definitions to real product pages. Open a product to review its supplier description, available specification tables and supporting evidence.

Tire bead wire

Bead Wire for tires

Example supplier: Bekaert Hlohovec As

A bronze- or brass-coated high-carbon wire product for anchoring the tire bead to the rim.

Open product

Hose & conveyor reinforcement cord

Conveyor Belt Steel Cord

Example supplier: Fasten International Limited

A steel-cord example for conveyor-belt reinforcement where construction, elongation and rubber adhesion must be matched.

Open product

Prestressed concrete strand

PC Strand

Example supplier: Fasten International Limited

A high-ductility, low-relaxation strand example listed for post-tensioning and prestressed-concrete structures.

Open product

Questions buyers ask

Direct answers about this product category

Supplier catalogs often use the same words for different constructions. These answers make the important distinctions explicit.

01What is reinforcement wire, cord and strand?: These are high-strength steel products engineered to work inside rubber, concrete or another composite. Tire bead wire anchors the tire to the rim. Fine steel cord reinforces tire belts. Larger cord reinforces conveyor belts and hoses. Prestressing strand places concrete in compression. Their coatings and constructions are designed around bonding and fatigue inside the host material.
02What is the difference between wire, cord and strand in reinforcement products?: Wire is a single drawn steel element. Cord is made by twisting fine filaments or strands into a flexible reinforcement. Strand is a defined group of wires, often seven in prestressed-concrete products. These terms describe construction, but the application specification also controls coating, strength, elongation, relaxation and bond behavior.
03Why is tire steel cord brass coated?: Brass coating helps the steel bond to rubber compounds during vulcanization and provides process protection. Coating composition, mass and uniformity affect adhesion and manufacturing stability. Tire producers normally qualify cord against their own rubber system, so supplier data should be supported by customer-specific adhesion and fatigue testing.
04How is conveyor-belt steel cord different from tire cord?: Conveyor-belt cord is sized and constructed to carry longitudinal tension across long belt systems and to work with the belt's splice design. Tire cord uses finer constructions optimized for tire shape, fatigue and rubber bonding. Both are composite reinforcements, but cord construction, elongation, coating and qualification methods differ.
05What does low relaxation mean for prestressed-concrete strand?: Relaxation is the gradual loss of stress in a tensioned steel strand held at a nearly constant strain. Low-relaxation strand is processed to reduce that loss, which helps the structure retain prestress over time. Project standards define the strength, relaxation test and dimensional requirements that the supplied lot must meet.
06What evidence should buyers request for reinforcement products?: Request lot traceability, construction and dimensional data, strength and elongation results, coating information and application-specific tests. Rubber reinforcement normally needs adhesion and fatigue qualification with the buyer's system. Prestressing strand needs strength, relaxation and material certificates under the project standard, plus coating or sheathing evidence when specified.

Related categories

Products buyers often compare next

Open a neighboring category when the end use calls for a different construction, coating or reinforcement system.

Industrial steel wire

Wire sold for forming, spring making, tying and fabrication.

Wire rope and cable

Rope and cable designed to carry load directly.

Buyer guides

Questions to settle before requesting quotes

These guides explain the decisions that are hard to correct after production starts.

Tire bead wire versus diamond-beaded cutting wire

Planned terminology guide separating tire reinforcement from stone-cutting assemblies.

How to specify prestressed concrete strand

Planned guide for strand construction, relaxation class and certificates.

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