Wed. May 27th, 2020

Angle Iron and Its Various Usages

2 min read

People who use angle iron understand that this kind of structural iron is much stronger as compared to non-structural iron. However, often people do not know that while using angle iron whether it would be appropriate in certain applications.

Due to this reason, often many people may not be able to use angle iron for things that it was really designed for.

If you can develop sufficient understanding about the strength or weaknesses of these angle irons, then it will be much easier for you to decide whether it will be really suited for certain job or whether you must prefer any other kind of iron, which would be much better suited e.g. I-beams, rectangular tubing etc.

Angle Iron has greatest load bearing capacity

An angle-iron is always stronger than any non-structural steel, and the reason for this is that its 2 perpendicular flanges will work in conjunction, so that it will provide it cross-sectional structural integrity and also resistance to bending by pressure that is applied from left or right, top or bottom.

Its 2 flanges that will make up angle will create compound area. This compound area basically is location of axis of piece of steel structure that will offer maximum resistance to moment of its inertia.

The compound area will be the area of maximum resistant load bearing of single piece of structural steel which is the area that is most resistant to moment of inertia.

Strengths and weaknesses of the angle iron

Relatively, angle iron is resistant to moment of inertia while load is applied from its top- bottom or from either side.

However, when pressure will be applied in such a manner that it will make it to rotate around the compound area’s axis, it may fail with application of less amount of pressure than when pressure will be applied all around its cross section.

To put it differently, when angle-iron will be twisted from one side to the other end when the structural integrity will be most vulnerable.

Angle-iron can be hard to bend however it can be easily twisted.

Implications of angle-iron’s strength and weaknesses

When it is used conjunctively then angle iron will work extremely well. If you weld 2 pieces together at 90ᵒ angle and bracing angles of welds with shorter pieces at 45ᵒ angle, then its susceptibility to twisting will be greatly reduced.

This means that angle iron is a solid material for framing of:

  • Boxes and crates
  • Cages
  • Any structure for load bearing support
  • Free-standing, load-bearing frames

Angle iron may not be suitable for supporting heavy loads as an individual unit or in any way which twists iron like –

  • Light Post
  • Fence post
  • Home-made ladders
  • Lean-to support
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