12cr1mov Boiler Alloy Steel Sheet Plate

12Cr1MoV, alloy structural steel. Unified number code: a31132. Standard: GB / t3077-1999

Main characteristics: compared with 12CrMoV steel, this steel has higher oxidation resistance and heat strength. The creep and rupture strength of the steel are close to each other, and the steel has high plasticity under the condition of long-term tension; the process and weldability of the steel are good, but it needs to be preheated to 300 ℃ before welding, and stress relief treatment is required after welding.

12Cr1MoV steel is widely used in Superheater, header and main steam pipe of high pressure and subcritical power plant boiler. At 580 ℃, it still has high thermal strength, oxidation resistance and high endurance plasticity. The production process is simple and the welding performance is good, but it is sensitive to the normalizing cooling rate. Long term use at 580 ℃ will produce the second kind temper brittleness caused by the segregation of impurity elements such as phosphorus at the grain boundary. Pearlite spheroidization will occur after long-term use.

This kind of steel is mainly used after normalizing and high temperature tempering to make superheated steel pipe, conduit, serpentine tube and other corresponding forgings in high pressure equipment with working temperature no more than 570-585 ℃.

Chemical Compositions

Mechanical property

Sample blank size: 30mm

heat treatment

Quenching temperature (℃): 970; coolant: air

Tempering heating temperature (℃): 750; coolant: air

Brinell hardness (hbs100 / 3000) (annealed or tempered at high temperature): ≤ 179

Under normal temperature: allowable tensile stress (σ w / MPA): 93 allowable bending stress (σ w / MPA): 112 allowable shear stress (T / MPA): 56

Zhangjiagang Hua Dong Energy Technology Co., Ltd. is a high-tech enterprise specialized in producing all kinds of stainless, carbon and alloy steel tubes and pipes, steel plates which are widely used in the field of boiler&heat exchanger, energy, petrochemical, mining, food, paper, gas and fluid industry. And we have passed the attestations including ASME, TUV, Grade A, ISO9001, EN12952, EN10216, SO3834.

The company is the subsidiary of Zhangjiagang Hua Dong Boiler Co., Ltd, which is the most leading boiler and boiler parts manufacturer in China with a history of 35 years and annual turnover of 110 million U.S.A. dollars. Our products have been exported to over 30 countries like United States, Australia, Vietnam, Pakistan, Albania, Cambodia, India, Indonesia, South Korea, the Philippines, Turkey, Saudi Arab, Germany, Russia, Chile, Syria, Thailand, Bangladesh, France, Algeria, Mongolia and Singapore, Cuba, Iraq, Italy, Spain, Japan, Yugoslavia, Sri Lanka, the Czech republic, kyrgyzstan, Canada, Malaysia, the United Kingdom and so on.

Location:

Our company locates in Zhangjiagang city which is a port city, and is only 120km far away from Shanghai, 60km far away from Suzhou and 60km far away from Wuxi.

The traffic is very convenient.

Staff:

About 600 employees, including 150 technicians.

Strategy:

We strive to provide the top grade quality products and best services to the customers. Keep developing the new products which are energy saving, environment protective and keep investing for the new equipments and new technologies.

Supplying ability:

10000MT per month for the tubes and pipes

5000MT per month for the steel plates

Global cooperation partners:

Covanta, Foster Wheeler, RCR Energy, ALSTOM, POSCO, Dongfang Electric, Shanghai Electric, China Huaneng, China Guodian, China Datang Corporation, Huaguang Boiler, Haerbin Boiler, Dongfang Boiler, Hangzhou Boiler, Bao Steel, Tisco, Shagang Steel......

Our products' quality is ensured by advanced, excellent facilities and manufacturing equipment. We have introduced many advanced processing and inspection equipments, including plasma cutting machine, NC drilling equipment, automatic welding system, welding equipment and real-time online imaging detection system, etc., which successfully ensure excellent quality of our products.