1.6511 / SAE4340 Hot Rolled Alloy Steel Annealed Heat Treatment In Mechanical

1.6511 / SAE4340 Hot Rolled Alloy Special Steel For Mechanical

Introduction:

1.6511 / SAE4340 has high strength, toughness and good hardenability and anti-overheating stability, but the white point sensitivity is high, and there is temper brittleness.The welding property is poor, before welding, it needs to be preheated by high temperature. After welding, the stress should be eliminated and used after adjustment.

Available size(mm):

All the sizes as require can be customerized as fresh production with MOQ,products, of required specifications can be developed/produced per international, chinese or industry standards, or based on agreements with customers.

Similar grades: DIN-1.6511, AISI-SAE4340, JIS-SNCM439, GB-40CrNiMo

Chemical Composition(%):

Feature:

It has high strength, toughness and excellent quenching and anti-overheating stability, but the white point is highly sensitive and has a temper brittleness.The welding property is poor, before welding, it needs to be preheated by high temperature. After welding, the stress should be eliminated and applied after adjustment.

Applications:

Used as require good toughness, high strength, as well as the important conditioning of large size, heavy machinery such as high load of axial, turbine shaft, larger than 250 mm in diameter of helicopter rotor shaft, turbojet engine turbine shaft, blade, high load of transmission parts, fasteners of the crankshaft.Gear, etc.;Can also be used for operating temperature over 400 ℃ of rotor shaft and blade, etc.;It can also be used to make important parts for special performance after nitride treatment, and can be used in high strength steel after low temperature tempering or after isothermal quenching.

Quality Condition:

1. Both end of each bar must be cut

2. Ladle furnanced and vacuum de-gassed

3. Show heat No. on each bar

4. Surface condition the surface of the hot rolled square bar shall befree cracks, scar and wrinkles that affect the use of the billets. In case there is the above-mentioned defect, it shall be remove.

5. The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition shall be within the limit stipulated in the contract.

Product photos:

Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China.With twenty years experience in special steel industry, our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.

To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, Daye Special Steel. We have thousand tons of stock materials in our own factory and also can provide processing services to customers. We are full of export experience for many years, the product covers America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.

After years of development, the company has established a complete quality management and export service system. We have a group of experienced and competent elites and is capable of offering the best service to clients. Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services. All the products should be inspected the metallographic analysis, hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.

Our company keeps the principle of “sincerely cooperation, endless striving for perfection”. We desire to establish the long-term mutual beneficial and win-win relationship with clients all over the world.