Mechanical properties of square tube
- Share
- Issue Time
- Sep 22,2025
Summary
Strength refers to the ability of welded square tube materials to resist damage (moderate plastic deformation or breakage) under static load. Because the forms of load action include stretching, tightening, winding, shearing, etc.

Square Tube Mechanical Properties – Yield, Tensile, Hardness Data
Comprehensive mechanical data for steel square tubes: yield strength, tensile strength, elongation & hardness by material (Q235, Q355, ASTM A500). Essential for structural design.
Strength refers to the ability of welded square tube materials to resist damage (moderate plastic deformation or breakage) under static load. Because the forms of load action include stretching, tightening, winding, shearing, etc.
Because strength is also divided into tensile strength, compressive strength, flexural strength, shear strength, etc. There is often a definite connection between various strengths, and in normal use, tensile strength is often used as the most fundamental strength gauge.
1. The functional index analysis of welded square tubes - commonly used methods include Q195 welded square tube Brinell angle (HB), Rockwell angle (HRA, HRB, HRC), and Vickers angle (HV). Angle is a gauge that balances the softness and hardness of metal materials.
The most rarely used method for determining the angle within the present year is the pressing angle method, which uses a certain amount and shape of pressure head to press into the surface of the tested metal material under a certain load, and determines its angle value based on the pressing level.

2. The functional index analysis of welded square tubes - the strength, plasticity, and angle discussed later are all machine function indicators of the metal under static load. In practice, many mechanical machines are working under repetitive loads, which can cause fatigue in such environments.
3. The functional index analysis of welded square tube - the strength is greatly affected by the load on the mechanical parts, which is called the impact load. Q195 welded square tube is resisting the destructive power under the impact load, which is called the impact toughness.
4. Functional index analysis of welded square tube - Angle plasticity refers to the power of Q195 welded square tube data to undergo plastic deformation (permanent deformation) under load without damage.
5. Functional index analysis of welded square tubes - mechanical function of plastic square tubes.