Carbon Steel Plate

GB/T11251 1345 Alloy Structural Steel Plate

GB/T11251 1345 Alloy Structural Steel Plate DescriptionGB/T 11251 alloy structural steelplate has high strength and wear resistance, high hardenability, moderate cold deformation plasticity, good cutting performance and good welding performance. During heat treatment, the tou

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GB/T11251 1345 Alloy Structural Steel Plate Description

GB/T 11251 alloy structural steel plate has high strength and wear resistance, high hardenability, moderate cold deformation plasticity, good cutting performance and good welding performance. During heat treatment, the toughness of steel decreases less. GB/T 11251 alloy steel can still maintain high toughness under water cooling conditions, but has the tendency of overheating sensitivity, white point sensitivity and temper brittleness. They are mostly used after quenching and tempering, and can also be used under positive inflammation or hot rolling conditions. Typical applications include valve bodies, pumps and fittings, wheels, bolts, studs, gears, high loads on internal combustion engines. Drive shafts on steel balls, rollers and bushings for electric locomotives, machine tools, tractors, steel rolling equipment, boring machines, railway vehicles and mining machinery, etc..

Product Parameters

Product Name	GB/T11251 1345 Alloy Structural Steel Plate
Production Process	Hot Rolling, Cold Rolling
Material Standards	AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc.
Width	100mm-3000mm
Length	1m-12m, or Customized Size
Thickness	0.1mm-400mm
Delivery Conditions	Rolling, Annealing, Quenching, Tempered or Standard
Surface Process	Ordinary, Wire Drawing, Laminated Film

chemical composition

Brand	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

Mechanical Properties

Brand	Yield Strength MPa min.	Elongationmin. %
45Mn2	600	13
27SiMn	550	18
40B	500	20
45B	550	18
50B	550	16

Scope of Application

GB/T 11251 alloy steel plates are widely used in various applications in bearings/gears of rotating machinery. Typical applications such as valve bodies, pumps and fittings, wheels, bolts, studs, gears, high loads of internal combustion engines. Electric locomotives, machine tools, tractors, steel rolling equipment, boring machines, railway vehicles and mining machinery drive shafts on steel balls, rollers and bushings, etc.

Equivalent Material

China	United States	Germany	Japan	France
45Mn2	1345	46Mn7	SMn3	45M5
27SiMn	-	27MnSi5	-
40B	14B35	35B2	-	-
45B	50B46H	45B2	-	-
50B	14B50	-	-	-

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