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ISMB 300 Weight

Updated 8 November 2026Checked against IS 808:2021, IS 2062:2011How we check

ISMB 300 weighs 44.2 kg per meter as listed in IS 808. A 6 m length weighs about 265.2 kg and a 12 m length about 530.4 kg.

ISMB 300 Weight Calculator

All results are in kg.

HBtwtf
Measure depth (H), flange width (B), web (tw) and flange (tf) thickness.
–Weight of 1 piece
–Total weight
–Weight per meter
–Weight per foot
–Total in tonnes
–Total in pounds
–Paint / galvanizing area
–Estimated cost
Download ISMB Beam Weight Chart (PDF)Free, printable, A4

ISMB 300 Dimensions

PropertyValue
Depth (h)300 mm
Flange width (b)140 mm
Web thickness (tw)7.5 mm
Flange thickness (tf)12.4 mm
Weight44.2 kg/m

ISMB 300 Weight by Length

LengthWeight
1 meter44.2 kg
1 foot13.5 kg
6 m265.2 kg
20 ft (6.10 m)269.4 kg
12 m530.4 kg

ISMB 300 Weight by Quantity

Pieces6 m pieces12 m pieces
1265.2 kg530.4 kg
51,326.0 kg2,652.0 kg
102,652.0 kg5,304.0 kg
205,304.0 kg10,608.0 kg

One tonne of ISMB 300 is about 3.8 pieces of 6 m.

How to Calculate

Weight (kg/m) = [2 × B × tf + (H − 2 × tf) × tw] × 0.00785 = 43.46 kg/m

Dimensions as per SP 6(1). The formula ignores the root radius and flange taper, so it gives 43.46 kg/m instead of the listed 44.2 kg/m. Use the mill weight for billing.

Frequently Asked Questions

What is the weight of ISMB 300 per meter?

ISMB 300 weighs 44.2 kg per meter as listed in IS 808.

What is the weight of a 6 m ISMB 300?

A 6 m length of ISMB 300 weighs about 265.2 kg.

What is the weight of a 12 m ISMB 300?

A 12 m length weighs about 530.4 kg.

What is the size of ISMB 300?

ISMB 300 is 300 mm deep with a 140 mm wide flange, a 7.5 mm web and 12.4 mm thick flanges.

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