Q355 Q355B Equal Angle Steel

Q355 is a kind of high-quality low-alloy high-strength structural steel, Q355 has excellent comprehensive properties, low temperature resistance, easy welding, excellent cutting performance, high strength, excellent toughness, good wear resistance, fatigue resistance and corrosion resistance. Widely used in Bridges, vehicles, ships, buildings, pressure vessels, special equipment and so on

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Q355 Steel Properties


		C			P	S				N
Q355	Q355B	0.24	0.55	1.6	0.035	0.035	0.30	0.30	0.40	0.012
	Q355C	0.20			0.030	0.030				0.012
	Q355D	0.20			0.025	0.025				–

Note: For quality grades C & D, Carbon content (C)-

C Less than or equal to 0.20% when thickness/diameter Less than or equal to 40mm (1.57 in.);

C ≤0.22 when thickness/dia. >40mm (1.57 in.);

Q355B material heat treatment
The heat treatment process can significantly improve the physical properties of steel, improve the compressive strength, ductility and service life of parts, and improve the hardness and wear resistance. Therefore, critical equipment parts and special tools must be quenched and tempered. The quenching and tempering treatment can also improve the production and processing performance of the product workpiece, thereby improving the production efficiency and production processing quality. Therefore, the Q355B steel quenching and tempering treatment plays a very crucial role in the production of machinery and equipment manufacturing industry.

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