Steel fibre price: cost per kg and per m³, dosage and applications of steel fibre concrete

Steel fibre prices in 2026 are typically €1.10 to €2.50 per kg (indicative, excl. VAT), depending on wire strength, hook type and order size. At a common dosage of 20 to 35 kg per m³, the fibres add roughly €22 to €88 per m³, so ready-to-pour steel fibre concrete costs roughly €130 to €255 per m³.

Steel fibre concrete is concrete with steel fibres added to the mix at the ready-mix plant, typically 20 to 50 kg per m³ depending on fibre and application (10 to 35 kg with modern high-tensile fibres). The fibres wholly or partly replace reinforcement meshes or cages and give the concrete flexural tensile strength and ductility in all directions.

All prices in this article are indicative (2026 price level, Benelux, delivered within the region, excl. VAT and pumping); your own quotation depends on dosage, fibre type, volume and region. Outside the Benelux, local price levels apply.

Steel fibre price per kg in 2026

Steel fibres for concrete cost roughly €1.10 to €2.50 per kg (indicative, 2026 price level, Benelux, excl. VAT), supplied in 20 kg bags or big bags. The lower end applies to standard steel fibres with a single end hook bought in large quantities; the upper end to high-tensile fibres with double or multiple hooks (the 4D and 5D level) and to small orders.

Quotes are usually compared on the rate per kg, but what you actually pay for is the cost per m³. A fibre that is dearer per kg can reach the required performance at a lower dosage, as the comparison at equal performance below shows.

Steel fibre prices move with the price of steel and wire rod, so check how long a quotation remains valid before you plan a pour around it.

Import offers on Asian B2B marketplaces sometimes quote lower prices per kg. These usually exclude freight and import duties, and the fibres do not always come with the CE marking and declaration of performance to EN 14889-1 that a European structural specification requires. What that marking covers is explained in EN 14889-1 and CE marking.

Current prices of our own fibres per kg (excl. VAT) are shown on the product pages of our steel fibre range; the fibres are supplied in 20 kg bags.

What determines the price of steel fibres?

Two quotations for "hooked-end steel fibres" can differ considerably, because several factors drive the cost per kg:

• Steel price: wire rod is the raw material, so the price per kg follows the steel market.

• Wire tensile strength: high-tensile wire costs more per kg than wire of normal tensile strength.

• Anchorage: single, double or multiple end hooks (3D, 4D or 5D level); the more elaborate the hook, the higher the price per kg tends to be.

• Geometry: finer wire needs more processing and gives more fibres per kg, around 14,500 per kg for a 35/0.55 fibre against around 3,400 for a 50/0.90 (our product data).

• Delivery form and quantity: glued bundles or loose fibres, 20 kg bags or big bags, a full load or a part load, and the delivery distance.

• Documentation and support: CE marking, a declaration of performance (DoP) to EN 14889-1, design values and a dosage calculation.

Price per kg or price per m³: compare at equal performance

Compare quotations in euros per m³ at the performance class the design requires (the residual flexural tensile strength determined to EN 14651), not in euros per kg. A fibre with a higher price per kg but better anchorage can reach the same class at a lower dosage. Hypothetical figures, purely to show the arithmetic:

• Fibre A: 25 kg/m³ × €1.40 per kg = €35.00 per m³

• Fibre B: 18 kg/m³ × €1.90 per kg = €34.20 per m³

In this example, the fibre that is dearer per kg works out slightly cheaper per m³. The dosage itself always comes from the structural engineer's calculation; the principles are set out in dosing concrete fibres: practical guidelines.

Steel fibre concrete price per m³

The price of steel fibre concrete per m³ consists of the base price of ready-mixed concrete plus the steel fibres and any mix adjustments. Indicative, 2026 price level, Benelux, excl. VAT:

• Base price ready-mixed concrete: €110 to €165 per m³, depending on strength class and region.

• Steel fibres: dosage × rate per kg, so €22 to €88 per m³ at 20–35 kg/m³ (or roughly €11 to €38 at 10–15 kg/m³ with high-tensile fibres, if the calculation allows it).

• Mix adjustments: sometimes a softer consistency or a plasticiser is needed to work the fibres in properly; some plants also charge a dosing surcharge if you supply the fibres yourself.

• Pumping, small loads and waiting time: these come on top; the full breakdown is in concrete price per m³.

• Total: roughly €130 to €255 per m³ for ready-to-pour steel fibre concrete.

The structural engineer sets the dosage; the table only shows what a given dosage costs. How the fibres get into the truck mixer, and what the plant needs from you, is covered in ordering fibres at the concrete plant. To compare a synthetic macro fibre against mesh for your own floor, use the savings calculator; for a tailored steel fibre price, request a quotation.

Worked example: steel fibres for a 500 m² warehouse floor

A worked example using the ranges from this article (indicative, 2026 price level, excl. VAT):

• Volume: a 500 m² floor at 150 mm thick takes 75 m³ of concrete.

• At 25 kg/m³: 1,875 kg of steel fibres, rounded up to 94 bags of 20 kg. Fibre cost roughly €2,060 to €4,690, or about €4.10 to €9.40 per m² of floor.

• If the calculation allows 20 kg/m³: 1,500 kg (75 bags), roughly €1,650 to €3,750, or €3.30 to €7.50 per m².

• The concrete itself: 75 m³ × €110 to €165 comes to €8,250 to €12,375.

Against that, there is no mesh to lay and tie. For the hours and lead time involved, see fibre concrete vs reinforcement mesh: time and cost.

Is steel fibre reinforced concrete cheaper than mesh or rebar?

Per m³, steel fibre concrete is more expensive than unreinforced concrete, but it replaces the delivery, cutting, positioning and tying of meshes, shortens the lead time and avoids rework caused by incorrectly placed reinforcement. The material costs of fibres and mesh are often similar; with very large quantities of steel, mesh can be cheaper on material, and under heavy concentrated loads (additional) traditional reinforcement remains necessary. In practice, the total costs of steel fibre concrete and traditionally reinforced concrete therefore often differ little, while fibre concrete wins on speed.

Mesh sizes and their prices are listed in reinforcement mesh sizes, weights and prices; the full time and cost comparison is in fibre concrete vs reinforcement mesh.

What is steel fibre concrete and how does it work?

Concrete is strong in compression but weak in tension: its tensile strength is roughly a tenth of its compressive strength. Traditionally, a structural engineer solves this with reinforcing steel at the locations where tensile stress occurs. Steel fibre concrete takes a different approach: hundreds of thousands of short steel fibres — a 35 mm fibre counts around 14,500 pieces per kg, so at 25 kg/m³ that is already some 360,000 fibres per cubic metre — distribute themselves throughout the entire volume and bridge cracks as soon as they form. The result is a three-dimensionally reinforced material without a separate reinforcement operation.

The performance of a steel fibre is mainly determined by three parameters: the aspect ratio (length-to-diameter ratio), the tensile strength of the steel wire and the anchorage. Modern structural fibres are cold-drawn from high-tensile steel wire and provided with hooked ends that anchor themselves in the cement matrix. When cracking occurs, the hooks deform in a controlled manner, so the concrete retains load-bearing capacity after cracking instead of failing brittly — that post-cracking behaviour (ductility) is exactly what a structural engineer needs in order to be allowed to count fibres as reinforcement.

Structural steel fibres fall under standard EN 14889-1; the post-cracking behaviour of the fibre concrete itself is determined with the bending test to EN 14651. How fibres absorb forces is explained in our article on the mechanism of fibre reinforcement; a broader overview of all fibre types is in the pillar on fibre reinforced concrete.

Tensile strength and performance classes

The tensile strength of steel fibre concrete as a composite depends on concrete quality, dosage and fibre type — so there is no single stand-alone figure for "tensile strength of steel fibre concrete". What is hard fact: the tensile strength of the fibre itself and the performance class of the fibre concrete. As an indication from our own range:

• Standard high-tensile fibre (35/0.55): tensile strength 1,900 N/mm² ± 7.5%

• Heavy high-tensile fibres (50/0.90 and 60/0.75): tensile strength 2,100 N/mm² ± 7.5%, performance class 56 and 64 respectively (manufacturer's data)

For comparison: ordinary reinforcing steel B500 has a yield strength of 500 N/mm². The tensile strength of high-tensile fibre wire is thus nearly four to over four times as high, which is necessary because a short fibre has to transfer its force through a limited anchorage surface.

Applications of steel fibre concrete

Steel fibre concrete is the standard choice where high loads and large surfaces come together. The most common applications:

• Industrial floors — point loads from racking and continuous forklift traffic; fibres reinforce corners and edges in particular. See our article on fibre reinforced concrete for industrial floors.

• Foundations and pad footings — floor slabs, yard foundations and foundation beams with limited span.

• Tunnels and sprayed concrete — tunnel segments and tunnel linings are internationally among the largest consumers of steel fibre.

• Precast elements — basement walls, manhole rings and pipes, where eliminating fixing work shortens the production cycle. See our article on fibre reinforcement in precast concrete elements.

• Pavings and yard slabs — loading bays, container terminals and hardstandings with heavy axle loads.

Steel fibre concrete for foundations

For light to medium-weight foundations — yard foundations, foundations for lighting columns and street furniture, pad footings and beams with limited span — steel fibre concrete is often directly applicable as an alternative to meshes or cages. For primarily structural foundations under buildings, traditional reinforcement usually remains (partly) necessary; fibres are there combined with bars for additional crack control. Which foundation types lend themselves to fibre reinforcement is covered in fibre reinforced concrete for foundations. Rule of thumb: the more concentrated the point loads and the larger the tensile zones, the sooner the structural engineer will specify a combination.

Dosage: how much steel fibre per m³?

For steel fibre concrete, a typical dosage is roughly 20 to 50 kg/m³, which is about 0.25 to 0.65 per cent by volume. With modern high-tensile fibres with hooked ends, the dosage can sit at the lower end of that range or even below it: our structural steel fibres are dosed at 10 to 35 kg/m³, depending on the calculation. The stronger the wire and the better the anchorage, the fewer kilos are needed for the same performance class.

Our steel fibres come in 20 kg bags: at 25 kg/m³ that is one bag per 0.8 m³, or 12.5 bags per 10 m³.

Three factors determine the final dosage: the intended effect (structural strength requires more than shrinkage crack control), the fibre parameters (a higher aspect ratio performs better per kilo, but mixes less easily) and the mix composition. Overdosing is not a safety margin but a risk: it increases the chance of fibre balling and workability problems. The full guidelines per fibre type are in dosing concrete fibres: practical guidelines.

For structural applications, the structural engineer determines the dosage, in cooperation with the fibre supplier and their design software. So do not simply reckon on "something between 20 and 50" yourself: the required performance from the calculation is decisive.

Steel fibre concrete vs reinforced concrete

The fundamental difference: traditional reinforcement sits exactly where the structural engineer expects tensile stress, steel fibres sit everywhere. That makes fibre concrete strong in applications with distributed, variable or hard-to-predict loading (floors, pavings, precast), and traditional reinforcement indispensable where large tensile forces occur in concentrated form — beams with large spans, columns, moment connections.

• Execution — fibre concrete saves the complete fixing operation; reinforcement requires delivery, positioning and inspection

• Cracking behaviour — fibres control many fine cracks distributed across the surface; reinforcement concentrates crack width limitation around the bars

• Edges and corners — fibres reinforce right up to the edge; with meshes, the cover zone remains unreinforced

• Heavy structures — with high concentrated loads, (additional) traditional reinforcement remains the norm

Steel fibre concrete is therefore not a one-to-one replacement for every reinforced structure; structural work always requires a calculation by the structural engineer. In doubt between steel and synthetic fibres? Read the comparison steel fibres or synthetic macro fibres — synthetic is gaining ground in lighter applications and corrosion-prone environments.

Dramix® 3D, 4D and 5D: price and equivalent steel fibres

Many specifications prescribe Bekaert Dramix® as a reference. Bekaert does not publish a price list on its website: Dramix® is priced on request via a quotation, so the Dramix price depends on the project, the volume and the supplier. For a fair comparison, request prices at the same performance class and compare them per m³, as explained in the section on price per kg versus price per m³ above.

Our steel fibre range offers an alternative at each of the 3D, 4D and 5D levels, tested to the same standard, EN 14889-1:

Equivalence is demonstrated through the residual flexural tensile strengths from the EN 14651 bending test at the design dosage and through EN 14889-1, not through the brand: the structural engineer works with the post-cracking behaviour per dosage. All three fibres are dosed at 10 to 35 kg/m³, depending on the calculation. The 50/0.90 has double end hooks, and the 60/0.75 is the heaviest fibre in our range, for the highest demands on post-cracking behaviour. Our datasheets are available for download, and our advisers supply the corresponding design values for your specification. Dramix® is a registered trademark of NV Bekaert SA.

Pouring, power floating and polishing

Steel fibre concrete is poured and worked like regular concrete: pumping is fine, vibrating too. The fibres are dosed at the ready-mix plant — glued fibre bundles fall apart in the mixer and distribute themselves homogeneously, without balling. That homogeneous distribution is crucial to the structural performance; a good fibre does not sink or float out of the mix.

Power floating and polishing also work extremely well with steel fibre concrete — monolithically finished steel fibre floors are the rule rather than the exception in logistics. Bear two points in mind: close the surface in good time so fibres do not remain standing at the surface, and accept that a polished floor may occasionally show a fibre in the top layer. For aesthetic premium floors where that is unacceptable, a synthetic macro fibre or a thin unreinforced top layer is sometimes chosen. The complete step-by-step plan from preparation to curing is in our guide having fibre reinforced concrete poured.

Drawbacks of steel fibre concrete

An honest picture belongs here — steel fibre concrete also has limitations:

• Rust at the surface — fibres lying at or just below the surface can produce rust spots. Structurally this is almost always harmless (a loose fibre has no continuous corrosion path like a reinforcement bar), but aesthetically it can be a nuisance in exposed concrete.

• Aggressive environments — in chloride- or acid-laden environments (agricultural floors, silage slabs), steel is corrosion-prone; there, synthetic or basalt fibres are usually the better choice.

• No complete replacement in heavy structures — concentrated tensile forces and large spans continue to demand traditional reinforcement; the structural engineer determines the mix.

• Processing requires discipline — wrong dosing or poor mixing leads to balling and thus to weak spots; always work through the ready-mix plant, never by hand into the skip.

• Heavier lifting on site — at 25–50 kg/m³, a truck mixer easily carries 200 to 400 kg of steel; the logistics run through the plant, but small-scale mixing yourself is impractical.

Buying steel fibres for your project

Want to buy steel fibres or fill a specification with a Dramix® reference on an equivalent basis? Our steel fibre range is available per 20 kg bag and covered by EN 14889-1 datasheets and design values per performance class. The current price per kg is shown on each product page, so you can calculate the cost per m³ for your own dosage straight away.

The price per kg is only one of the criteria when you compare suppliers; which other points count is set out in choosing a fibre supplier. If the tender weighs environmental performance, also ask each supplier for a verified EPD and its NMD category; which documents count is explained in environmental certification for steel fibres. Send your floor design or specification requirement with your quotation request, and we will calculate the dosage and fibre type, including a comparison with a synthetic alternative if that works out better for your application.