ISMB & ISMC Weight Chart 2026 – Kg/m as per IS 808

Last Updated: September 26, 2026

The ISMB & ISMC Weight Chart 2026 is a useful reference for engineers, contractors, fabricators, architects, steel buyers, procurement teams, and construction professionals. ISMB beams and ISMC channels are widely used in industrial buildings, warehouses, factories, platforms, steel structures, machinery supports, infrastructure projects, and general fabrication. This chart provides commonly used sizes, unit weights in kg/m, approximate 6-meter weights, calculation formulas, applications, and 2026 price references.

What Is an ISMB Beam?

ISMB stands for Indian Standard Medium Beam. It is a hot-rolled structural steel section with an I-shaped profile consisting of a vertical web and horizontal flanges. ISMB beams are selected for applications requiring strength against bending, shear, compression, and other structural loads.

Common applications include industrial buildings, warehouses, steel frames, platforms, bridges, columns, roof structures, machinery supports, commercial buildings, and infrastructure projects. The number in the ISMB designation generally represents the nominal beam depth in millimeters. For example, ISMB 200 has a nominal depth of approximately 200 mm. Actual dimensions and structural capacity should always be checked against the applicable section data.

What Is an ISMC Channel?

ISMC means Indian Standard Medium Weight Channel. It is a hot-rolled steel channel having a C-shaped profile. ISMC channels are commonly used for structural supports, purlins, bracing, platforms, machinery bases, equipment supports, trailer structures, walkways, gantries, industrial sheds, and fabrication work.

For example, ISMC 150 refers to a channel with a nominal depth of approximately 150 mm. The actual unit weight depends on the standardized dimensions and section properties.

IS 808:2021 for ISMB and ISMC

IS 808:2021 – Hot Rolled Steel Beam, Column, Channel, and Angle Sections – Dimensions and Properties covers dimensional and sectional-property information for hot-rolled structural steel sections. For procurement and structural design, buyers should verify the exact designation, dimensions, unit mass, steel grade, manufacturer, and project specification before ordering.

Different published charts may show different values because of section series or source-table differences. Therefore, the approved section data should always be checked before final engineering or procurement.

ISMC Weight Chart 2026

ISMC Size	Depth	Flange Width	Weight in kg/m
ISMC 75	75 mm	40 mm	6.8
ISMC 100	100 mm	50 mm	9.2
ISMC 125	125 mm	65 mm	12.7
ISMC 150	150 mm	75 mm	16.4
ISMC 175	175 mm	75 mm	19.1
ISMC 200	200 mm	75 mm	22.1
ISMC 225	225 mm	80 mm	25.9
ISMC 250	250 mm	80 mm	30.4
ISMC 300	300 mm	90 mm	38.8
ISMC 350	350 mm	100 mm	42.1
ISMC 400	400 mm	100 mm	49.4

These values can be used for preliminary steel quantity calculations. Final procurement should use the approved unit mass for the required section.

ISMB Weight Chart 2026

ISMB Size	Beam Depth	Weight in kg/m
ISMB 100	100 mm	8.1
ISMB 125	125 mm	11.1
ISMB 150	150 mm	14.4
ISMB 175	175 mm	17.8
ISMB 200	200 mm	22.2
ISMB 225	225 mm	26.3
ISMB 250	250 mm	31.5
ISMB 300	300 mm	42.1
ISMB 350	350 mm	51.5
ISMB 400	400 mm	61.6
ISMB 450	450 mm	72.4
ISMB 500	500 mm	84.1
ISMB 550	550 mm	96.3
ISMB 600	600 mm	109.2

ISMB & ISMC 6-Metre Weight Calculation

The approximate weight of a standard 6-meter section can be calculated using:

6-Metre Weight = Weight per Meter × 6

For example, ISMC 200 weighs 22.1 kg/m.

22.1 × 6 = 132.6 kg

Therefore, one 6-meter ISMC 200 section weighs approximately 132.6 kg.

Similarly, ISMB 300 weighs 42.1 kg/m:

42.1 × 6 = 252.6 kg

Thus, one 6-meter ISMB 300 section weighs approximately 252.6 kg.

ISMB & ISMC Weight Calculation Formula

The basic formula is:

Total Weight = Weight per Meter × Length × Quantity

For example, if 20 pieces of ISMC 150, each 6 meters long, are required:

16.4 × 6 × 20 = 1,968 kg

Therefore, the total estimated weight is 1,968 kg or 1.968 MT.

For an ISMB 250 requirement of 10 pieces, each 12 meters long:

31.5 × 12 × 10 = 3,780 kg

The estimated total weight is therefore 3,780 kg or 3.78 MT.

For theoretical calculations, steel density of approximately 7,850 kg/m³ may be used. When cross-sectional area is expressed in square millimeters:

Weight per metre ≈ Cross-sectional Area × 0.00785

However, standard unit mass is preferable for procurement because rolled sections contain webs, flanges, fillets, and radii.

ISMB vs ISMC

ISMB is an I-shaped beam, while ISMC is a C-shaped channel. ISMB sections are commonly used for beams, structural frames, bridges, platforms, and load-bearing structures. ISMC sections are frequently used for supports, purlins, bracing, machinery bases, walkways, and fabrication.

The correct section should be selected according to span, loading, bending, shear, buckling, deflection, support conditions, connection design, steel grade, and section properties.

ISMB & ISMC Price Per Kg in India 2026

Prices depend on steel grade, size, manufacturer, quantity, location, freight, taxes, market conditions, and material availability. A general September 2026 MS channel reference may be around ₹55–₹80/kg, but this should not be treated as a fixed price.

For example, at ₹59/kg, 1,640 kg of ISMC material would have a preliminary value of:

1,640 × ₹59 = ₹96,760

For ISMB, if the quoted rate is ₹59.50/kg and the requirement is 2,000 kg:

2,000 × ₹59.50 = ₹119,000

Final pricing may include GST, freight, loading, unloading, cutting, testing, certification, and other charges.

Applications

ISMB beams are used in industrial buildings, warehouses, platforms, bridges, machinery supports, steel frames, commercial structures, and infrastructure projects.

ISMC channels are used for structural supports, purlins, bracing, platforms, equipment bases, machine supports, industrial sheds, trailer frames, walkways, gantries, and general engineering fabrication.

Quality Checks Before Buying

Before purchasing ISMB or ISMC sections, buyers should verify the section designation, depth, flange width, web thickness, flange thickness, length, unit weight, steel grade, manufacturer, heat number, Material Test Certificate, chemical composition, mechanical properties, surface condition, and dimensional compliance.

Common commercial lengths include 6 metres and 12 metres, while other lengths may be available upon enquiry.

Frequently Asked Questions

1. What is the ISMB & ISMC Weight Chart 2026?

It provides reference sizes and unit weights in kg/m for ISMB beams and ISMC channels.

2. What does ISMB stand for?

ISMB stands for Indian Standard Medium Beam, an I-shaped hot-rolled structural section.

3. What does ISMC stand for?

ISMC stands for Indian Standard Medium Weight Channel, a C-shaped structural section.

4. What is the weight of ISMC 100?

The reference weight is 9.2 kg/m.

5. What is the weight of ISMC 150?

The reference weight is 16.4 kg/m.

6. What is the weight of ISMC 200?

The reference weight is 22.1 kg/m.

7. What is the weight of ISMB 200?

The reference weight is 22.2 kg/m.

8. What is the weight of ISMB 300?

The reference weight is 42.1 kg/m.

9. How is total steel weight calculated?

Use Weight per Meter × Length × Quantity.

10. What is the ISMB and ISMC price per kg in 2026?

Prices vary according to size, grade, manufacturer, quantity, location, freight, taxes, and market conditions. A current quotation should be requested for final purchasing.

Conclusion

The ISMB & ISMC Weight Chart 2026 provides a practical reference for estimating structural steel quantities and approximate project tonnage. ISMB beams are widely used for structural frames, buildings, platforms, bridges, and machinery supports, while ISMC channels are commonly used for supports, purlins, bracing, platforms, equipment bases, and fabrication.

The basic calculation remains:

Total Weight = Weight per Meter × Length × Quantity

For accurate procurement, always verify the exact section designation, dimensions, unit mass, steel grade, length, applicable IS standard, manufacturer, certification, and delivery requirements. Steel prices can change according to market conditions, raw-material costs, demand, supply, freight, taxes, and regional availability.

For an accurate inquiry, provide:

Size + Grade + Quantity + Length + Delivery Location

Sachiya Steel International Private Limited
Phone: +91 9769056007
Email: sales@sachiyasteel.com
Website: www.sachiyasteel.com

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