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.

PRODUCT 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 DETAILS

Product Parameters

Product NameGB/T11251 1345 Alloy Structural Steel Plate
Production ProcessHot Rolling, Cold Rolling
Material StandardsAISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc.
Width100mm-3000mm
Length1m-12m, or Customized Size
Thickness0.1mm-400mm
Delivery ConditionsRolling, Annealing, Quenching, Tempered or Standard
Surface ProcessOrdinary, Wire Drawing, Laminated Film

chemical composition

BrandCSiMnB
45Mn20.42-0.490.17=0.371.40-1.80
27SiMn0.24-0.321.10-1.401.10-1.40
40B0.37-0.440.17-0.370.60-0.900.0005-0.0035
45B0.42-0.490.17-0.370.60-0.900.0005-0.0035
50B0.47-0.550.17-0.370.60-0.900.0005-0.0035

Mechanical Properties

BrandYield Strength  MPa min.Elongationmin.%
45Mn260013
27SiMn55018
40B50020
45B55018
50B55016

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

ChinaUnited StatesGermanyJapanFrance
45Mn2134546Mn7SMn345M5
27SiMn27MnSi5 
40B14B3535B2
45B50B46H45B2
50B14B50
PRODUCT DISPLAY

PRODUCT QUALITY

We have complete testing equipment and strong technical force. The company has advanced production equipment, equipped with key equipment such as pressing machines, large heat treatment furnaces, beveling machines, sawing machines, large sandblasting machines, and various testing instruments.

QUALITY INSPECTION

Our products are processed by professional technicians, and each product is carefully screened before shipment. We′re pleased to get your Inquiry and we will come back to as soon as possible.

PACKING AND SHIPPING

We provide products with competitive prices based on good quality and schedule each shipment on time. We′re pleased to get your Inquiry and we will come back to as soon as possible.

APPLICATION

Our main manufactures are stainless steel, galvanized steel, carbon steel and etc. That apply to engineering, coal mine, textile, electric power, boiler, machinery, military industry and other fields.

Petroleum
Bridge
Marine Exploration
Electric Field
Boiler Field
Textile Field
The issues you care about

Yes, we could provide the free samples on conditions it is available in stocks, however, the transportation fee is borne by buyer.

Each piece of products is manufactured by certified workshops, inspected piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.

We accept third-party inspections such as SGS, V-trust, TUV, DNV, etc.

Yes, we could make custom products according to your specific requirements.

Generally, we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers’ requirement.

30% T/T in advance, the balance 70% before delivery. We will show you the photos of products and package before you pay the balance.

EXW, FOB, CIF, CFR, DDU

For stocks, we could transport the goods to loading port within 7 – 15 days after we received your deposit. For production period, it usually takes about 15 days-30 days after receiving the deposit.

Our company has the ability to supply large projects and offers excellent preferential policies for large orders.

You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Under normal circumstances, we ship from Shenzhen, Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.

Of course, we welcome customers from all over the world to visit our factory. However, some of the plants are not open to the public.

In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry during the next working day.

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TIME

Delivery within agreed time

EFFICIENCY

Shipping worldwide

QUALITY

Lifetime service