Seamless Alloy Steel Tube 42CrMo4 4140 4130 43401

3, Japanese standard JIS standard:/904L,4, German standard DIN standard:1.45395, European standard EN standard: x1nicrmocu25-20-5, French standard NF standard, British standard BS standard: 904S13,904S14, Sweden:/NTR standard: AN4.

904L application field：
904l stainless steel pipe has good activation-passivation transformation ability, excellent corrosion resistance, good corrosion resistance in non-oxidizing acids such as H2SO4, CH3COOH, HCOOH, H3PO4, good pitting resistance in neutral chloride-containing medium, and good crevice corrosion resistance and stress corrosion resistance. It is suitable for various concentrations of H2SO4 below 70℃, and has good corrosion resistance in CH3COOH and mixed acid of HCOOH and CH3COOH of any concentration and any temperature under normal pressure. It is used in the chemical industry to handle many chemicals. Some examples are: acetic acid, acetylene, acrylates, acrylonitrile, aluminum sulfate, ammonium phosphate, ammonium sulfate, battery acid, benzene, butyl acetate, caprolactone, cellophane, citric acid, nitric acid phosphate, oxalic acid, calcium superphosphate, tartaric acid, uranium oxide and zinc sulfate.

           904L chemical composition:                                                                        

            Carbon C: ≤0.02
            Manganese Mn: ≤2.00
            Silicon Si: ≤1.00
            Chromium Cr: 19.0~13.0
            Nickel Ni: 23.0~28.0
            Phosphorus P: ≤0.045
            Sulfur S: ≤0.035
            Molybdenum Mo:4.0~5.0
            Copper Cu:1.0~2.0

904L uses, application scope, application areas are：
* Petroleum, petrochemical equipment, such as reactors in petrochemical equipment, etc.
* Sulfuric acid storage and transportation equipment, such as heat exchangers.
* Flue gas desulphurization devices in power plants, the main parts used are: tower of absorption tower, flue, stall door plate, inner parts, spray system, etc.
* Scrubbers and fans in organic acid treatment system.
* Seawater treatment device, seawater heat exchanger, paper industry equipment, sulfuric acid, nitric acid equipment, acid production, pharmaceutical industry and other chemical equipment, pressure vessels, food equipment.
*Pharmaceutical plants:centrifuges, reactors, etc.
* Plant food: soy sauce tanks, wine, salt tanks, equipment and dressings.
*Strong corrosive medium for dilute sulfuric acid 904L is the matching steel.