GB/T 11251 steel plate

GB/T 11251 steel plate introduction: GB/T 11251 steel plate is one of hot rolled alloy structural steel plates. GB/T 11251 hot rolled plates have high strength and wear resistance, high hardenability, moderate cold deformation plasticity, good cutting performance and fair welding performance. During heat treatment, the toughness of the steel decreases less. GB/T 11251 steel can still maintain high toughness under water cooling, but it has the tendency of overheating sensitivity, white point sensitivity and temper brittleness. Most of them are used after quenching and tempering, and they can also be used under the condition of positive inflammation or hot rolling.

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Steel Properties

GB/T 11251 steel plate chemical composition(%):

Steel grade	C	Si	Mn	B
45Mn2	0.42~0.49	0.17~0.37	1.40~1.80	-
27SiMn	0.24~0.32	1.10~1.40	1.10~1.40	-
40B	0.37~0.44	0.17~0.37	0.60~0.90	0.0005~0.0035
45B	0.42~0.49	0.17~0.37	0.60~0.90	0.0005~0.0035
50B	0.47~0.55	0.17~0.37	0.60~0.90	0.0005~0.0035

GB/T 11251 steel plate mechanical properties:

Steel grade	tensile strength MPa min.	Elongation min. %
45Mn2	600	13
27SiMn	550	18
40B	500	20
45B	550	18
50B	550	16

GB/T 11251 steel plate equivalent grades:
We can supply GB/T 11251 steel plate hot rolled steel plate and GB/T 11251 steel plate equivalent. Welcome to contact us if you are interested in GB/T 11251 steel plate hot rolled plates.

Application

GB/T 11251 steel plate application:
GB/T 11251 steel plate is widely used for a variety of applications in the used to the bearing/gearings in rotating machinery. Typical applications such as valve bodies, pumps and fittings, the high load of wheel, bolts, double-headed bolts, gears, internal combustion engine. Electric locomotives, machine tools, tractors, steel rolling equipment, boring machine, railway vehicle, and mining machinery transmission shaft on the steel ball, roller and shaft sleeve, etc.

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