Quick Answer: Structural steel typically runs $2,000 to $3,500 per ton installed for common W shapes as of 2026, with fabricated and fireproofed packages on complex jobs reaching $3,500 to $4,800 per ton. Raw mill steel is far cheaper, but you are buying fabrication, connections, paint or fireproofing, and erection. Your real price swings with section size, fabrication complexity, tonnage, and the local mill and fab shop market, so price every bid from current fabricator quotes, not a list price.
What Drives the Price
The number on your structural steel quote is a loaded number. Understand what sits inside it before you compare two bids.
- Raw mill steel vs fabricated: Mill price for A992 W shapes runs roughly $0.60 to $0.95 per pound ($1,200 to $1,900 per ton) at the mill. Fabrication, holes, plates, welding, and shop paint add $0.30 to $0.80 per pound. Delivered and erected, you are at $1.00 to $2.40 per pound, which is the $2,000 to $4,800 per ton range most estimators use.
- Section size and weight: Heavy W14 and W18 columns and W24 and W30 girders carry higher per pound cost than W8 and W10 because mill rollings of those sizes are less common and fab handling is heavier. Light material (angles, channels, hollow structural sections) runs higher per pound than W shapes for the same tonnage.
- Grade and specification: A992 is the default for W shapes. A36 covers angles, channels, and plate. A500 grade B and C covers HSS tube and pipe. A572 grade 50 and A913 grade 65 show up in seismic and high strength jobs and run higher. Bridge and seismic specs (A706 rebar, ASTM AISC 341 seismically compliant connections) add fabrication cost well above material.
- Fabrication complexity: Simple shear tab connections and straight cuts are cheap. Moment connections with complete joint penetration welds, stiffener plates, and seismic detailing can double the fab cost per pound on the affected pieces. Copes, bevels, camber, and built up members all add shop hours.
- Fireproofing and coatings: Spray applied fire resistive materials (SFRM) add $1.50 to $4.00 per SF of beam surface depending on rating (1, 2, 3 hour). Intumescent paint for exposed steel runs $6 to $18 per SF. Galvanizing adds $0.35 to $0.80 per pound. Shop primer is usually included, topcoat is not.
- Tonnage and market: A 20 ton job pays close to list. A 1,000 ton job pulls a 10% to 20% volume discount. Steel moves with scrap, iron ore, energy, and tariffs, and prices shift weekly on mill notices. A quote older than 30 days is a guess.
Typical Price Ranges by Type
Use these as a typical installed range in most US markets as of 2026. Raw mill only and bare erection numbers are lower; the ranges below assume fabricated, delivered, and erected.
- W shapes, A992, simple connections: $2,000 to $3,000 per ton installed.
- W shapes, moment frames and seismic detailing: $2,800 to $4,000 per ton installed.
- HSS tube and pipe, A500 grade B and C: $2,400 to $3,600 per ton installed.
- Angles, channels, light framing: $2,600 to $3,800 per ton installed.
- Joists and deck (LH, K, LH series joists): $2.50 to $5.00 per SF of deck, joists priced per linear foot at $18 to $45 per LF depending on span and load.
- Metal deck (composite, form, roof): $2.50 to $6.00 per SF installed, type B, N, and profiles vary.
- Bar joists and light structural: $1,800 to $2,800 per ton.
- Galvanized structural: add $700 to $1,600 per ton on top of fab and erection.
- Fireproofing, SFRM 2 hour: $1.50 to $3.00 per SF of beam surface, $4 to $9 per SF on columns.
For erection alone, field labor runs $0.45 to $1.10 per pound depending on piece count, height, and site access. A 50 ton job with a tight site and lots of small pieces costs more per ton to erect than a 500 ton job with a clean site and repetitive pieces.
How to Buy Smarter
Structural steel is bought from a fabricator, not a mill. The fabricator is your real partner, and the bid package you hand them sets the price.
- Release a clean IFC model and drawings. Missing connection types, incomplete camber and stud notes, and vague paint specs all get padded in the fabricator's bid. A complete package cuts the contingency the fab shop builds in.
- Get three fabricator quotes dated within the bid week. Fab shops vary 15% to 35% on the same package because of backlog and shop capacity. A shop with empty bays prices sharp; a shop 8 months out prices to lose.
- Specify connections up front. Shear tab vs moment connection changes fab cost by a factor of two to four on the affected pieces. Do not leave it to the fabricator to assume.
- Bundle the tonnage. A single 80 ton job gets a better price per ton than four 20 ton jobs to the same shop. Consolidate phases and fabricators where the schedule allows.
- Lock mill price with an escalator: On bids with a buyout 60 to 120 days out, ask the fabricator to hold mill price for 30 days and pass through mill increases after that. Vague "subject to market" language is where estimates leak.
- Price fireproofing separately: Do not bury SFRM in the steel unit price. It is a separate line item with its own subcontractor and its own market price.
Where Estimators Get It Wrong
The classic mistake is pricing tons and forgetting the rest of the package. You bid 80 tons at $2,800 and feel smart, then the moment connections, the stiffener plates, the stud rails, the deck, the joists, the paint, the fireproofing, and the crane add 25% to 50% to the installed structural cost. Structural steel is cheap per ton and expensive per square foot of building once you load it.
The second mistake is using last quarter's mill price on a job that buys next quarter. Mill notices move weekly. Refresh quotes within 30 days of buyout.
The third is ignoring connection complexity in the takeoff. A structure with 200 moment connections is not priced like a structure with 20. Count connections by type in your takeoff and price each group, or the bid averages away the expensive work.
The fourth is underestimating fireproofing and coating surface area. Beam surface runs 1.5 to 3.0 SF per pound of steel depending on shape. A 2 hour SFRM spec on a heavy column can add $4 to $9 per SF, and that is real money on a 500 ton frame.
Putting It Together
Build your structural steel line item from the ground up: tons by shape from the takeoff, times the fabricated and erected unit price for the exact grade and connection type you specified, plus deck and joists per square foot, plus fireproofing and coatings as separate line items, plus the crane and field labor. That is your installed steel cost per square foot of building, and it is the only number that matters on buyout day. Get three fabricator quotes dated this week, release a clean package, lock the mill price window, and price fireproofing on its own line. Do that and your steel budget holds.