Stainless Steel Alloy 904L ball valve

Stainless Steel Alloy 904L ball valve introduction
Stainless Steel Alloy 904L ball valve is an Austenitic stainless steel with low carbon content and high alloying designed for the environment with harsh corrosion conditions. Compared with 316L and 317L, Stainless Steel Alloy 904L ball valve has better corrosion resistance, as well as high cost performance and price.Due to the addition of 1.5% copper, Stainless Steel Alloy 904L ball valve has excellent corrosion resistance for reducing acids such as sulfuric acid and phosphoric acid.Stainless Steel Alloy 904L ball valve also has excellent corrosion resistance to stress corrosion, pitting corrosion and gap corrosion caused by chloride ion, and has good intergranular corrosion resistance.40% sulfuric acid, below 50℃, annual corrosion rate <0.1mm.
 
Stainless Steel Alloy 904L ball valve ,which material  904L super austenitic stainless steel belongs to low carbon high nickel, Molybdenum austenitic acid proof steel .Stainless Steel Alloy 904L ball valve has good activation-passivation transformation ability, excellent corrosion resistance, good corrosion resistance in non-oxidizing acids such as sulfuric acid, acetic acid, formic acid and phosphoric acid, good pitting resistance in neutral medium containing chloride ion, and good anti-crevice corrosion and anti-stress corrosion performance.It is suitable for sulfuric acid of various concentration below 70℃. Stainless Steel Alloy 904L ball valve has good corrosion resistance to acetic acid of any concentration and temperature under atmospheric pressure, and the mixed acid of formic acid and acetic acid.
 
Stainless Steel Alloy 904L ball valve specification:

Product Name	Stainless Steel Alloy 904L ball valve
1. Material	Stainless Steel Alloy 904L
2. Size	1/2~24 inch ( DN15~DN600)
3. Port	Full Port,redured port
4. Working Pressure	150LB~2500LB
5. Connection Ends	Flange
6. Working Temp.	-10~425℃, or according to customer requirements for different industry.
7. Suitable Medium	Water, Sea water,Natural Gas, Oil and some corrosive liquid
8. Operation	Handle operated, Locking device is option
9. Inspection & Testing	According to API598

 
Stainless Steel Alloy 904L ball valve standard: 
1. Design & Manufacture standard: API 6D, API 608, BS 5351. 
2. Pressure & Temperature standard: ASME B16.34. 
3. Face to face dimension standard: ASME B16.10. 
4. Flange standard: ASME B16.5, ASME B16.47. 
5. Test & Inspect standard: API 598, API 6D. 

Stainless Steel Alloy 904L ball valve corrosion resistance performance
Since the carbon content of 904L is very low (up to 0.020%), there will be no carbide precipitation under the general heat treatment and welding conditions.This eliminates the risk of intercrystalline corrosion that usually occurs after heat treatment and welding.Because of the high cr-Ni-Mo content and the addition of copper, 904L of Stainless Steel Alloy 904L ball valve can be passivated even in reducing environments such as sulfuric acid and formic acid.The high nickel content makes it have a lower corrosion rate in the active state.In the concentration range of 0~98% pure sulfuric acid, Stainless Steel Alloy 904L ball valve can be used at temperatures up to 40 degrees Celsius.The corrosion resistance of pure phosphoric acid is very good in the range of 0~85% concentration.In industrial phosphoric acid produced by wet process, impurities have a strong effect on corrosion resistance.Among all kinds of phosphoric acids, 9Stainless Steel Alloy 904L ball valve has better corrosion resistance than ordinary stainless steel.In strongly oxidizing nitric acid, 904L is less corrosion resistant than high alloyed steel without molybdenum.In hydrochloric acid, the use of 904L is limited to lower concentrations of 1-2%.In this concentration range.The corrosion resistance of 904L is better than that of conventional stainless steel.The 904L steel has high corrosion resistance.In chloride solution, the corrosion resistance of cracks is also very good.The high nickel content of 904L reduces the corrosion rate in pits and crevices.Ordinary austenitic stainless steels may be sensitive to stress corrosion in a chlorine-rich environment at temperatures above 60 ° C. This sensitization can be reduced by increasing the nickel content of the stainless steels.Due to the high nickel content, 904L is highly resistant to stress corrosion cracking in chloride solution, concentrated hydroxide solution and hydrogen sulfide rich environment.Specializing in the production of Stainless Steel Alloy 904L ball valve.
 
Stainless Steel Alloy 904L ball valve application scope
1.Petroleum, petrochemical equipment, such as reactors in petrochemical equipment, etc.
2.Storage and transportation equipment for sulfuric acid, such as heat exchangers, etc.
3.The flue gas desulfurization unit of power plant mainly USES the tower body of absorber, flue, door panel, interior parts, spray system, etc.
4.Scrubbers and fans in organic acid treatment systems.
5.Seawater treatment plant, seawater heat exchanger, papermaking industry equipment, sulfuric acid, nitric acid equipment, acid making, pharmaceutical industry and other chemical equipment, pressure vessel, food equipment.
6.Pharmaceutical factory: centrifuge, reactor, etc.
7.Plant foods: soy sauce cans, cooking wine, salt shakers, equipment and dressings.
8.Stainless Steel Alloy 904L ball valve is suitable for dilute sulfuric acid with strong corrosive medium.