W10x12 weight and dimensions

17.9 kg/m · 12.00 lb/ft

W10x12 is a 251 mm deep beam with a 101 mm flange, 4.83 mm web and 5.33 mm flange thickness. It weighs 17.9 kg per metre (12.00 lb/ft). It belongs to the W-shape wide flange beam series, American (AISC / ASTM A6).

W10x12 weight calculator

Total weight
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Weight of standard lengths

Pieces20 ft each (lb)40 ft each (lb)
1240.6481.1
51,202.82,405.6
102,405.64,811.3
204,811.39,622.6
5012,028.224,056.5

Pieces per ton

20 ft lengths per short ton (2,000 lb)8.3
40 ft lengths per short ton (2,000 lb)4.2
Length per ton166.3 ft

Useful for converting a tonnage order into a number of bars.

Surface area for painting

Per metre of length0.881 m²/m
Per foot of length2.89 ft²/ft
Per tonne of steel49.2 m²/t
A 12 m length10.57 m²

Outside perimeter × length, all faces (AISC perimeter PB). Use it to estimate paint, primer, fireproofing or galvanizing quantities.

Cross-section

W10x12 cross-section, drawn to scaleh 251b 101tw 4.83tf 5.33r 7.7

Drawn to scale. Dimensions in mm.

Dimensions

Depth h 251 mm 9.882 in
Flange width b 101 mm 3.976 in
Web thickness tw 4.83 mm 0.190 in
Flange thickness tf 5.33 mm 0.210 in
Root radius r 7.7 mm 0.303 in
Mass17.9 kg/m12.00 lb/ft

Section properties

PropertyValueUnit
Area22.80cm²
Moment of inertia Ix2,240cm⁴
Moment of inertia Iy90.70cm⁴
Elastic modulus Zx179cm³
Elastic modulus Zy18.00cm³
Plastic modulus Zpx206cm³
Plastic modulus Zpy28.50cm³
Radius of gyration rx9.91cm
Radius of gyration ry1.99cm
Torsion constant J2.28cm⁴

W10 series weights

084167 W10x12: 17.9 kg/m W10x12 W10x15: 22.3 kg/m W10x15 W10x17: 25.3 kg/m W10x17 W10x19: 28.4 kg/m W10x19 W10x22: 32.7 kg/m W10x22 W10x26: 38.5 kg/m W10x26 W10x30: 44.8 kg/m W10x30 W10x33: 49.1 kg/m W10x33 W10x39: 58 kg/m W10x39 W10x45: 67 kg/m W10x45 W10x49: 73 kg/m W10x49 W10x54: 80 kg/m W10x54 W10x60: 89 kg/m W10x60 W10x68: 101 kg/m W10x68 W10x77: 115 kg/m W10x77 W10x88: 131 kg/m W10x88 W10x100: 149 kg/m W10x100 W10x112: 167 kg/m W10x112 kg/m

Next heavier: W10x15 (22.3 kg/m).

Stiffness and strength per kilogram

The elastic section modulus Zx governs bending strength. Dividing it by the weight shows how efficiently each size uses its steel: higher is better when weight is the cost driver.

Sectionkg/mIx (cm⁴)Zx (cm³)Zx per kg/m
W10x12 17.902,240179.0 10.00
W10x15 22.302,870226.0 10.13
W10x17 25.303,410265.0 10.47
W10x19 28.404,010308.0 10.85

Full table: W-shape (wide flange) beam chart (PDF).

How the weight is calculated

Mass per metre = cross-sectional area × density of steel = 22.80 cm² × 0.785 kg/(cm²·m) = 17.90 kg/m.

Rolled sections are made to a nominal mass, and the actual mass can differ by a few percent within the tolerances of ASTM A6. For purchasing, invoicing by weight or checking deliveries, use the producer's stated mass.

Typical uses

Beams of this shape are used as floor and roof beams, lintels, crane girders and frame members, where bending about the strong axis governs.

Steel I-beams being erected as bridge girders over a highway
Photo: MassDOT, Wikimedia Commons, public domain.

Frequently asked questions

What is the weight of W10x12 per metre?

W10x12 weighs 17.9 kg/m, which is 12.00 lb/ft.

How much does a 6 m or 12 m length of W10x12 weigh?

A 6 m length weighs about 107.4 kg and a 12 m length about 214.8 kg.

Source: AISC Shapes Database v16.0. Values are nominal; verify with the producer before ordering.