Hot rolled GB/T1591 Q345B angle steel

Product Introduction

GB/T1591 Q345B angle steel is a Chinese standardized low alloy, medium tensile strength steel made with a hot-rolling process, and is used for a number of manufacturing purposes. The GB/T1591 Q345B angle steel with less than 0.2 percent of its composition made up of carbon, less than 0.55 percent of its composition made of silicon and several impurities (mostly sulfur, chromium and nickel).

GB/T1591 Q345B angle steel chemical composition

Grade	C	Si	Mn	P	S	Nb	V
Q345B	≤0.2	≤0.5	≤1.7	0.035	0.035	0.07	0.15
	Ti	Cr	Ni	Cu	N	Mo
	0.2	0.3	0.5	0.3	0.012	0.1

GB/T1591 Q345B angle steel yield strength properties

Grade	Yield strength Mpa
Grade	≤16	16-40	40-63	63-80	80-100	100-150	150-200	200-250
Q345B	≥345	≥335	≥325	≥315	≥305	≥285	≥275	≥265

GB/T1591 Q345B angle steel tensile strength

Grade	Tensile strength Mpa
Grade	≤40	40-63	63-80	80-100	100-150	150-250	250-400
Q345B	470-630	470-630	470-630	470-630	450-600	450-600	-

Most elements in the air will cause corrosion of metal materials, so when storing GB/T1591 Q345B angle steel, it is better to store the angle steel in a clean and dry place to avoid humid air, increase the appearance of corrosion and rust spots on the GB/T1591 Q345B angle steel, and lose the use value.

No matter what kind of angle steel is, the specification and size are inconsistent, so GB/T1591 Q345B angle steel should be stored according to the principle of classification, so as to facilitate the direct use of the latter. Don't mix it with other items.