china manufacturer directory Inconel 690 2.4642 Welded pipe price

Standard sea packaging for New Product 15-7MO Stainless Steel Plate 316 Price

china manufacturer directory Inconel 690 2.4642 Welded pipe price

 Special Features of inconel 690

Alloy 690 has the ability to excellent resistance to intergranular corrosion and stress corrosion cracking, mainly used for pressurized water reactor nuclear power plant steam generator tube material. PWR steam generator tubes materials through a development process, including 304 austenitic stainless steel, alloy 600, alloy 800 and alloy 690. Service for 600 alloy corrosion failure studies show that intergranular corrosion and intergranular stress corrosion cracking is a major problem. 690 alloy as a PWR steam generator tube material, from the 1990s has not been put into use since the report found damaged.

Main applications of inconel 690

690 alloy is mainly used for pressurized water reactor nuclear power plant steam generator tube material is the core technology of the steam generator. At present, China has been running a PWR nuclear power plant unit, the only one to use the Qinshan 800 alloy, Qinshan, Daya Bay and Ling Ao Nuclear Power Station 690 alloy used as a steam generator tube material. Most of PWR nuclear power plant under construction and planning are also used as alloy 690 steam generator tube material. However, at present the country has 690 alloy tube running with PWR basically purchased from abroad. 690 alloy tubes foreign production company French Valinox, Sweden Sandvik and Sumitomo. Domestic intentional production and have produced 690 alloy pipe company has long-established special materials and precious silver Special Steel Tube Co., Ltd.
September 25 morning, in Nansha District, Guangzhou City, east of the town Huangge Electric (Guangzhou) Heavy Machinery Co. assembly plant, along with the Oriental heavy machine technician will make domestic Baosteel 690 alloy U-shaped tube slowly penetrated Fangchenggang Nuclear Power Unit 1 1 steam generator "heart" to complete the nuclear power 690 alloy U-shaped tube of domestic applications since the first successful installation of nuclear power plant in China. China marks the first time the core of nuclear steam generator "Made in China."

Chemical Compositon Table% of inconel 690

Ni:Surplus

Cr:30.39

Fe:8.88

C:0.023

Al:0.22

Ti:0.26

Mn:0.23

Si:0.07

Cu:0.02

P:0.006

S:0.002
Physical  properties of inconel 690:

Density:  8.19g / cm
Melting:   1343-1377 ℃

 Mechanical properties of inconel 690:

Young's modulus:     211GPa

Poisson's ratio:         0.289
Yield strength:          350MPa
Tensile strength:       700MPa
Elongation:               45%