Q195 steel is a carbon structural steel. Yield strength 195MPA. Lower strength than Q235. The price is cheaper. Used in construction, structure, motorcycle frame, etc. σs185 means a yield strength of 185MPa.

Q235 steel is a carbon structural steel. It is equivalent to A3 and C3 steel in the old standard GB700-79 grade, which is the grade of Russian TOCT. The Q in the steel number stands for yield strength. Under normal circumstances, the steel is used directly without heat treatment.

Features: Because it has not been annealed, its hardness is very high (HRB greater than 90), the machining performance is very poor, and only a simple directional bending process of less than 90 degrees (perpendicular to the winding direction) can be carried out. To put it simply, cold rolling is processed and rolled on the basis of hot rolled plate cultivation, generally speaking, it is a process of hot rolling - pickling - phosphating - saponification - cold rolling.

Product information:

Q195 is a carbon structural steel with yield strength of 195MPA and advantages of high plasticity, toughness and weldability.

Q195Chemical Element Content (%)：C : ≤0.12, Mn: ≤0.50, Si : ≤0.30, S : ≤0.040, P : ≤0.035.

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Q235：The mechanical properties of steel made of Q235B are stronger, and the mechanical properties of steel made of Q235A are weaker.In terms of welding performance, Q235B is stronger, while Q235A is weaker.

Q235A Chemical Element Content (%)：（Mn）0.30-0.65, （Si）0.3, （S）0.05, （p）0.045 

Q235B Chemical Element Content (%)：（Mn）0.30-0.70,（Si）0.3, (S）0.045，（P）0.045.