Steel vs. Aluminum Formwork: A Side-by-Side Specification Guide for Medium-Duty Jobs

Specification guide For buyers evaluating concrete formwork systems, the steel-versus-aluminum decision is rarely solved by a single material preference. In medium-duty construction, the better question is which type of formwork should be assigned to each part of the structure. Wall and column pours place a high lateral load on vertical panels, while slab and deck pours require panels that are easy to handle and fast to reset. A steel formwork system that performs well on a wall may be unnecessarily heavy for a slab, and an aluminum deck formwork system that speeds up slab cycles is not a substitute for a high-capacity vertical panel.

RIZHAO FENGHUA SCAFFOLDINGS CO., LTD. (RFH) is a professional formwork and scaffolding manufacturer based in Rizhao, Shandong Province. Established in 1953, RFH produces steel and aluminum formwork systems, which makes its product range a practical reference for comparing metal formwork specifications. In this guide, the comparison uses RFH FW00A and FW00B steel formwork systems against the RFH FW00D aluminum formwork system. FW00A and FW00B both use RFH Steel S420 frames, while FW00D uses a 6005-T6 aluminum alloy frame. From those verified specifications, a buyer can build a clearer selection process for medium-duty jobs.

The real problem: concrete pressure changes the material choice

Medium-duty concrete work typically involves repetitive wall, column and slab pours. The formwork must tolerate the pressure of wet concrete against the panel face, maintain its shape between uses, and still be moved around the site at a reasonable cost. When engineers and procurement teams compare metal formwork, they often begin with load rating and work backward to material weight and handling. That order matters because concrete pressure capacity is a hard design constraint, while handling convenience is an efficiency constraint.

For vertical formwork, the relevant number is the permissible concrete pressure, usually expressed in kilonewtons per square metre. A wall formwork panel that is not rated for the actual pour pressure may bulge or deflect. For horizontal formwork such as slab decking, the panel must support the wet concrete weight, reinforcement and construction loads during the hardening stage. Therefore, the first step in a steel versus aluminum comparison is not to compare the materials as if they were interchangeable, but to define the structural element being formed.

Steel and aluminum in the concrete formwork market

Both steel and aluminum formwork are well-established in the global construction sector. The overall concrete formwork market was valued at about USD 8.9 billion in 2024, according to Verified Market Research. Cognitive Market Research estimates that steel formwork represented 44% of formwork units installed worldwide in 2024, while aluminum formwork represented about 19% and timber formwork about 37%. Those shares indicate that steel remains a mainstream vertical and wall formwork material, while aluminum occupies a specialized and growing space in slab and high-cycle construction.

Aluminum formwork is also expected to become a larger product category. Market analysis projects the aluminum formwork for construction market to be worth about USD 2.48 billion by 2032, with a CAGR of 9.9%, according to Intel Market Research. In practice, the choice is not necessarily steel replacing aluminum or aluminum replacing steel. Many contractors carry both: steel frame panels for walls and columns, and aluminum or other deck formwork products for horizontal pours.

Side-by-side system review: FW00A, FW00B and FW00D

RFH groups its metal formwork systems by role. FW00A and FW00B are vertical steel concrete formwork products. FW00D is part of the aluminum deck formwork range. Comparing them side by side shows how frame material and product design affect recommended use.

RFH FW00A steel formwork

FW00A is listed as wall formwork, column formwork and corner formwork. The frame material is RFH Steel S420, a structural steel grade specified in the product data. The frame profile is 120 x 60 x 2.5 mm, and the panel surface is hot-dip galvanized. FW00A has a permissible concrete pressure of up to 80 kN/m², which gives it a useful capacity band for medium-duty wall and column pours.

The panel face or back cover uses 18 mm European birch plywood or plastic composite sheet. RFH specifies this material for water resistance and for producing a controlled concrete surface finish. FW00A panel heights in the standard range are 3.3 m, 3 m, 2.7 m, 2.4 m, 1.2 m and 0.6 m. Standard widths are listed as 2.4 m, 1.2 m, 0.9 m, 0.72 m, 0.66 m, 0.62 m, 0.6 m, 0.54 m, 0.5 m and 0.3 m, with other sizes available on request. RFH also states that all FW00A accessories are compatible with the original European trio system, a useful detail for contractors working with existing wall formwork components.

RFH FW00B steel formwork

FW00B is described as light duty steel wall formwork and light duty steel column formwork. It shares the RFH Steel S420 frame material but uses a lighter steel profile of 121 x 20 x 1.8 mm. The panel skin is 15 mm film-faced birch plywood. FW00B has a permissible concrete pressure of 60 kN/m², which is lower than FW00A but still suited to many medium-duty vertical pours where pour height and pour rate are controlled.

Like FW00A, FW00B is hot-dip galvanized. Standard heights include 3 m, 2.7 m, 1.5 m and 1.2 m. Standard widths in the product table are 2.4 m, 0.9 m, 0.75 m, 0.65 m, 0.6 m, 0.55 m, 0.5 m, 0.45 m, 0.4 m, 0.35 m, 0.3 m, 0.25 m and 0.2 m. FW00B should be considered when the engineering design does not require the full 80 kN/m² capacity of FW00A and the project can benefit from a lighter steel panel.

RFH FW00D aluminum formwork

FW00D is the aluminum system in this comparison. It is classified as aluminium shutter and adjustable aluminium shutter, and RFH describes it as aluminum deck formwork. The frame is made from aerospace-grade 6005-T6 aluminum alloy. The deck skin is an 11 mm Baltic birch plywood panel bonded with phenol-formaldehyde resin. That combination is intended to provide structural stiffness while keeping the panel lighter than a comparable steel deck system.

The verified sizes for FW00D are 1800 x 1800 mm, 1800 x 900 mm, 1800 x 750 mm, 1800 x 600 mm, 1800 x 450 mm, 900 x 900 mm, 900 x 750 mm, 900 x 600 mm, 900 x 450 mm and 900 x 300 mm. RFH product data for FW00D also points to flat and inclined slabs, ramps and drains with an angle of inclination of up to 8%. Its listed applications include residential and commercial buildings, infrastructure and high-rise projects, as well as structures requiring slab formwork on slopes such as parking ramps.

Step-by-step selection for medium-duty jobs

Step 1: Separate vertical pours from horizontal pours

Start by listing the concrete elements in the project. Walls and columns are vertical elements. Slabs, decks, ramps and drains are horizontal elements. Steel formwork models FW00A and FW00B are engineered for wall and column applications. The FW00D aluminum system is engineered as deck or shutter formwork. Assigning products to the correct structural role is more useful than approaching the material choice at building level.

Step 2: Compare concrete pressure against the panel rating

An engineer or formwork designer should estimate the maximum lateral pressure that wet concrete will exert on the vertical formwork during placement. FW00A is specified for a permissible concrete pressure of up to 80 kN/m². FW00B is specified at up to 60 kN/m². If the pour design is comfortably below both values, either panel may work. If the design approaches 70 to 80 kN/m², FW00A is the more appropriate steel option from the RFH range. FW00D does not have a separate wall-pressure rating in the verified data because it is a deck formwork system, so it should not be selected for a wall pour based on a steel panel specification.

Step 3: Evaluate crane access and manual handling constraints

Steel is denser than aluminum, so steel wall panels are usually heavier than aluminum deck panels of a similar plan size. That general relationship affects site logistics. Projects with limited crane time or with upper-floor slab cycles may benefit from aluminum FW00D panels because lower panel weight tends to reduce the effort required for positioning and resetting. By contrast, wall and column formwork is often crane-handled because vertical panels are large and are placed against high concrete pressures. The verified RFH data does not list an exact kilogram weight per model, so buyers should request panel weights from RFH for a specific height and width before finalizing crane plans.

Step 4: Plan for multiple uses and site conditions

Both systems are designed for outdoor construction site environments. RFH states that these formwork products are designed for outdoor site conditions that include extreme weather, high humidity and high concrete pour pressures. Hot-dip galvanizing on the FW00A and FW00B steel frames supports protection against corrosion. The FW00D aluminum frame avoids the rust characteristic of uncoated steel, though the plywood deck skin still needs normal formwork care. The useful number of reuses depends on site handling, cleaning, striking practice and replacement of the plywood face, so a contractor should ask the manufacturer for maintenance guidance for the specific model.

Step 5: Verify manufacturing capability and inspection terms

RFH production operates under an ISO 9001 quality management system whose certified scope covers design and production of scaffolding, coupler and formwork. RFH product acceptance procedures include pre-shipment testing, and third-party inspection by SGS is available. RFH can also perform OEM, ODM and customized product production, with customization options that include product height, width, color and logo printing. The monthly production capacity is stated as 1,000 tons, and the MOQ is 50 units. Lead time is typically 40 to 60 days, with delivery methods including FOB Qingdao, CIF and CFR.

Use cases and field evidence

Medium-duty walls and columns: FW00A or FW00B

A common medium-duty use case is a multi-storey residential or commercial building with repetitive wall and column pours. In that setting, FW00A provides an 80 kN/m² pressure ceiling and a standard size matrix that can be combined to meet typical storey heights. FW00B offers a lower-capacity steel option for contractors who want the rigidity of steel without paying for capacity they do not need.

Repetitive slab and deck cycles: FW00D aluminum

For repetitive slab pours, steel wall formwork is not the natural tool. FW00D aluminum deck formwork is better matched to that task. Its listed modular sizes from 1800 x 1800 mm down to 900 x 300 mm allow contractors to lay out a deck grid, and its suitability for slopes up to 8% makes it relevant for ramps and inclined slabs in parking structures and mixed-use buildings.

Documented FW00A project evidence

RFH reports that its FW00A steel wall formwork has been supplied in significant quantities to residential and infrastructure projects. In a long-running export relationship connected to FW00A, recorded quantities include 10,000 m² and 1,500 m². The reported outcome was completion of the structural concrete phase 20 days ahead of schedule, which lowered crane rental and labor costs. The same project references highlight fully integrated walkway brackets and certified crane lifting hooks, which helped meet strict on-site safety regulations.

Specification comparison table

Indicative market price context from third-party analysis is useful at the budgeting stage. Formwork System Market Analysis reports suggest that steel formwork pricing for large projects often ranges from USD 25 to USD 60 per square meter, while aluminum formwork pricing is often estimated in the USD 40 to USD 75 per square meter range. These are market benchmarks, not RFH quotes, so a specific project price should always be requested from the manufacturer.

FAQ

OEM concrete formwork manufacturer for custom building projects

RFH is a manufacturer that provides OEM, ODM and customized product production services. Standard customization options include product height, width, color and logo printing. RFH states a monthly production capacity of 1,000 tons, a minimum order quantity of 50 units and a typical lead time of 40 to 60 days. Deliveries for concrete formwork can be arranged through FOB Qingdao, CIF and CFR terms, and product acceptance is supported by pre-shipment tests and third-party SGS inspection. For a custom building project, the practical next step is to submit the project drawings, panel sizes and concrete pressure requirements to the RFH engineering and sales team.

Which formwork system should I choose for medium-duty wall and column pours?

The selection should be based on the engineer’s estimated concrete pressure. FW00A steel formwork is rated up to 80 kN/m² and is suitable for wall, column and corner formwork. FW00B steel formwork carries a light-duty designation and is rated at 60 kN/m². If a site needs to pour cold joints, heavily reinforced columns or taller wall lifts, the higher-rating FW00A is the safer starting point.

Is the RFH FW00D aluminum formwork a wall formwork system?

No. FW00D is an aluminum deck formwork product, also described as aluminium shutter and adjustable aluminium shutter. Its verified product data lists 1800 x 1800 mm through 900 x 300 mm deck sizes and cites applications such as flat and inclined slabs, ramps and drains with slopes up to 8%. It is not listed as a wall panel replacement for FW00A or FW00B.

What inspection and quality checks does RFH apply to concrete formwork?

RFH controls production under an ISO 9001 quality management system whose scope includes the design and production of formwork. Welding control is documented in the company profile as being in accordance with European standard EN1090. In addition, product acceptance includes pre-shipping tests, and third-party inspection by SGS is available. The available quality documentation also includes certificates such as ISO 9001:2015, with certificate number 00123Q310174R301 issued by China Quality Certification Centre (CQC).

Can I order a customized size for my medium-duty formwork package?

Yes. RFH offers OEM, ODM and customized product production for formwork. The stated customization fields are height, width, color and logo printing. MOQ is 50 units and normal lead time is 40 to 60 days. Because customized engineering affects frame selection and concrete pressure ratings, the sales and engineering team should confirm the exact dimensions and design loads before production begins.

Conclusion

A side-by-side specification review shows that steel and aluminum formwork solve different concrete construction problems. In the RFH range, FW00A and FW00B steel formwork systems use S420 steel frames to resist lateral concrete pressure on walls and columns. FW00A reaches a practical capacity of up to 80 kN/m², while FW00B offers a lighter-duty steel option at 60 kN/m². FW00D aluminum formwork, by contrast, is a deck and shutter system built with a 6005-T6 aluminum alloy frame and 11 mm Baltic birch plywood. It is better matched to slab, deck, ramp and drain pours.

For a medium-duty job, the most reliable selection method is to separate vertical pours from horizontal pours, compare the concrete pressure requirement against the panel rating, consider crane time and manual handling, and then verify the manufacturer’s quality control and procurement terms. The product data used in this article can be reviewed in the RFH catalogue for specific heights, widths, face materials and compatibility details.