What is SS400 pipe made of

What is SS400 pipe made of

SS400 pipes are mainly made of carbon structural steel, and its material complies with the Japanese Industrial Standard (JIS G3101) and is ordinary carbon structural steel.

What is the chemical composition of SS400 pipe?

Carbon (C): ≤0.22%, low carbon content gives the material good plasticity and weldability, avoiding the brittleness of high carbon steel.

Silicon (Si): ≤0.35%, mainly plays a deoxidation role, while improving the strength of steel.

Manganese (Mn): ≤1.40%, improves strength and hardenability through solid solution strengthening.

Phosphorus (P): ≤0.045%, sulfur (S) ≤0.050%, low phosphorus and sulfur content reduces welding crack sensitivity and improves toughness.

What are the mechanical properties of SS400 steel pipe

Yield strength: ≥245MPa when thickness ≤16mm, ≥235MPa when 16-40mm, ≥215MPa when >40mm. This characteristic of decreasing strength with thickness ensures the stability of thick-walled pipes when bearing heavy loads.

Tensile strength: 400-510MPa, which can withstand large tensile loads while avoiding brittle fracture caused by excessive strength.

Elongation: ≥26%, indicating that the material can produce large plastic deformation when subjected to stress and adapt to dynamic load environments.

Impact toughness: Impact energy ≥27J at room temperature, and can still maintain good toughness in a low temperature environment of -20℃, suitable for projects in cold areas.

What is the equivalent material of ss400 pipe