how to calculate steel weight in kg

How to calculate steel weight in kg

To calculate the weight of steel, you can use the following formula:

Formula:

Weight (kg)=Volume (m³)×Density (kg/m³) 

Steps to calculate steel weight:

1. Calculate the volume of the steel:

   For a solid steel bar:

   Volume (m³)=Length (m)×Cross-sectional Area (m²)
   

   For a hollow steel pipe:

   Volume (m³)=π×[(Outer Radius (m)2−Inner Radius (m)2)×Length (m)]

2. Use the density of steel:

   The density of steel is approximately 7850 kg/m³

3. Calculate the weight:

Multiply the volume by the density of steel:

Weight (kg)=Volume (m³)×7850

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Example for a solid steel bar:

• Length: 2 meters
• Diameter: 10 cm (0.1 m)

1. Cross-sectional area (for a circular section)

   A=π×(d2)2

   A=π×(0.12)2=0.00785 m² 

2. Volume:

   V= Length × A=2×0.00785=0.0157 m³

3. Weight:

   W=V×7850=0.0157×7850=123.745 kg

So, the weight of the steel bar would be approximately 123.75 kg.

If you have specific dimensions or a different shape of steel, you can follow similar steps and adjust the calculations accordingly.

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