MS Flats are one of the most widely used steel products in India’s industrial and construction ecosystem. From fabrication workshops and machinery frames to industrial gratings, platforms, and domestic grills, MS flats offer durability, ease of welding, and cost-effectiveness. To select the right size and estimate material cost, knowing the MS flat weight calculation formula, weight chart, and examples becomes extremely important.
In this article, we provide detailed formulas, charts, examples, and practical guidance for engineers, fabricators, procurement teams, and buyers. The data is compiled from standard industry references and formats you provided.
What Are MS Flats?
MS Flats (Mild Steel Flats) are rectangular cross-section strips made of low-carbon mild steel. Their representation is always done by:
Width (W) × Thickness (T)
Example:
25 × 5 MS Flat
→ Width = 25 mm
→ Thickness = 5 mm
Because mild steel contains low carbon, it is easy to cut, bend, shape, and weld—making MS flats suitable for light to medium structural applications.
Common uses include:
- Industrial gratings
- Fabrication of frames
- Support structures
- Automotive fabrication
- Cable trays
- Machine base plates
- Domestic grills, gates & railings
Why Accurate MS Flat Weight Calculation Is Important
Knowing the exact weight per meter helps in:
- Cost estimation
- Safe structural design
- Material procurement planning
- Transportation calculation
- Avoiding wastage
Industrial buyers, especially fabricators, construction companies, and OEMs, prefer using a weight calculation formula rather than relying only on charts because not all mills produce uniform sizes. If you’re looking for a trusted supplier, you can check out Udhhyog Steel Industrial Catalyst as well.
MS Flat Weight Calculation Formula
To calculate the weight of MS flats, the universal steel formula is used:
Weight (kg/m) = Thickness (mm) × Width (mm) × Density of MS (kg/m³) / 1,000,000
Since the density of mild steel = 7,850 kg/m³
This becomes:
Weight (kg/m) = (T × W × 7.85) / 1000
Where:
T = Thickness in mm
W = Width in mm
Examples of MS Flat Weight Calculation
Example 1: 25 × 5 mm MS Flat
Weight = (25 × 5 × 7.85) / 1000
= (981.25) / 1000
= 0.98 kg/m
Example 2: 40 × 6 mm MS Flat
Weight = (40 × 6 × 7.85) / 1000
= 1884 / 1000
= 1.88 kg/m
Example 3: 50 × 10 mm MS Flat
Weight = (50 × 10 × 7.85) / 1000
= 3925 / 1000
= 3.92 kg/m
These examples show how simple and reliable the weight formula is.
MS Flat Weight Chart (Common Industrial Sizes)
(Values compiled from your formats and standard industry references)
| Size (mm) | Weight (kg/m) |
| 20 × 3 | 0.47 |
| 20 × 5 | 0.79 |
| 20 × 6 | 0.94 |
| 25 × 5 | 1.00 |
| 25 × 6 | 1.20 |
| 25 × 10 | 2.00 |
| 32 × 5 | 1.30 |
| 32 × 8 | 2.20 |
| 40 × 5 | 1.60 |
| 40 × 6 | 1.90 |
| 40 × 10 | 3.10 |
| 50 × 5 | 2.00 |
| 50 × 6 | 2.40 |
| 50 × 10 | 3.90 |
| 63 × 8 | 4.00 |
| 75 × 10 | 5.90 |
| 100 × 10 | 7.80 |
| 100 × 16 | 12.60 |
| 125 × 10 | 9.80 |
| 150 × 16 | 18.80 |
| 150 × 25 | 29.50 |
Note: Values may vary slightly depending on rolling mill tolerances.
Industrial Use Case – Why MS Flat Weight Matters
Across fabrication workshops, infrastructure projects, and heavy industries, MS flats are used in applications where load-bearing and precision matter. For example:
- In gratings and platforms, weight estimation ensures proper load distribution.
- In machine frames, accurate steel weight helps determine vibration resistance.
- Procurement teams need weight calculations to order the right tonnage.
Correct calculation avoids over-ordering and reduces costs.
Manufacturing & Grades of MS Flats
Primary Manufacturers
There are no primary steel producers in India that directly manufacture MS flats. These are mostly produced in secondary rolling mills.
Secondary Producers
Rolling mills across the country follow IS 2062 guidelines for:
- Chemical properties
- Physical parameters
- Tensile strength
However, many mills meet physical properties but may vary slightly in chemical consistency—common in commercial mild steel.
MS Flat Applications in Industries
- Material handling systems
- Power plant structures
- Solar panel structures
- Fabrication workshops
- Railways
- Infrastructure projects
- Automotive body manufacturing
Because mild steel is flexible and cost-effective, MS flats are preferred for both heavy fabrication and light domestic use.
Conclusion
Understanding the MS flat weight calculation formula, using a reliable weight chart, and checking real examples helps buyers, engineers, and fabricators make informed decisions. Whether you are designing a project or planning material procurement, accurate weight estimation ensures safety, cost control, and structural reliability.
If needed, you can visit our flat category to learn more about MS flats.
