GB/T11251 1345 Alloy Structural Steel Plate
GB/T 11251 alloy steel is one of the common hot-rolled alloy structural steel plates. This steel plate is widely used in various applications in bearings/gears of rotating machinery.
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- Commodity name: GB/T11251 1345 Alloy Structural Steel Plate
GB/T 11251 alloy steel is one of the common hot-rolled alloy structural steel plates. This steel plate is widely used in various applications in bearings/gears of rotating machinery.
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 ParametersProduct 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
-
-
-
-
GB/T11251 1345 Alloy Structural Steel Plate - Stock Warehouse
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GB/T11251 1345 Alloy Structural Steel Plate - Product Inspection
Tensile Strength Testing Tensile Strength Testing Physical Performance Testing Chemical Composition Testing 
Inspection Hardness Testing Spectral Detection Mechanical Properties -
GB/T11251 1345 Alloy Structural Steel Plate - Product Measurement
Width Measurement Length Measurement Thickness Measurement Thickness Measurement -
GB/T11251 1345 Alloy Structural Steel Plate - Product Packaging
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