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904L Stainless Steel Sheet
Huien Metal
Product Details
Super Austenitic stainless steel (904L stainless steel plate) is a highly alloyed austenitic stainless steel with very low carbon content that resists corrosion well in dilute sulfuric acid and is designed for environments with harsh corrosion conditions. It has high chromium content and sufficient nickel content. The addition of copper makes it have strong acid resistance, especially high resistance to chloride gap corrosion and stress corrosion cracking, and is not easy to appear corrosion spots and cracks. The pitting resistance is slightly better than other steel, with good machinability and weldability, which can be used in pressure vessels.
Product Name | 904L Stainless Steel Sheet |
Thickness | 0.3mm-180mm |
Material | 904L |
Technique | Hot rolled (HR), Cold rolled (CR), 2B, 2BA, BA ,NO.8 |
Package | MAX 4 TONS as one package |
Quality Inspection | SGS,or other Third Party inspection |
Application
Petroleum and petrochemical equipment, such as reactors in petrochemical equipment, etc.
Sulfuric acid storage and transportation equipment, such as heat exchanger.
* Power plant flue gas desulfurization device, the main use parts are: absorption tower body, flue, door plate, internal parts, spray system, etc.
Scrubbers and fans in organic acid treatment systems.
* Seawater treatment equipment, seawater heat exchanger, paper industry equipment, sulfuric acid, nitric acid equipment, acid making, pharmaceutical industry and other chemical equipment, pressure vessels, food equipment.
* Pharmaceutical factory: centrifuge, reactor, etc.
* Plant foods: soy sauce jars, cooking wine, salt jars, equipment and dressings.
* Matching welding material model: electrode (E385-16/17), wire (ER385).
904L stainless steel plate is versatile, with good corrosion resistance, heat resistance, low temperature strength and mechanical characteristics; Stamping bending and other hot processing good, no heat treatment hardening phenomenon. Widely used in household products (1, 2 types of tableware), cabinets, indoor pipelines, water heaters, boilers, bathtubs, auto parts, medical equipment, building materials, chemical, food industry, agriculture, ship parts.
Chemical Composition
904L Chemical composition: | |||||||||
Grade | C % | Si % | Cr % | Mn % | Si % | P % | S % | N% | Cu% |
904L | 0.03 | 1 | 18.00-20.00 | 3.-4.0 | ≤0.75 | 0.035 | ≤0.03 | 0.1 | 4.0-5.0 |
Mechanical Property
SS 904L Mechanical Property Standard | ||
Tensile strength σ B (MPa) | Conditional yield strength σ0.2 (MPa) | Elongation δ5 (%) |
≥490 | ≥220 | ≥35 |
Product Details
Super Austenitic stainless steel (904L stainless steel plate) is a highly alloyed austenitic stainless steel with very low carbon content that resists corrosion well in dilute sulfuric acid and is designed for environments with harsh corrosion conditions. It has high chromium content and sufficient nickel content. The addition of copper makes it have strong acid resistance, especially high resistance to chloride gap corrosion and stress corrosion cracking, and is not easy to appear corrosion spots and cracks. The pitting resistance is slightly better than other steel, with good machinability and weldability, which can be used in pressure vessels.
Product Name | 904L Stainless Steel Sheet |
Thickness | 0.3mm-180mm |
Material | 904L |
Technique | Hot rolled (HR), Cold rolled (CR), 2B, 2BA, BA ,NO.8 |
Package | MAX 4 TONS as one package |
Quality Inspection | SGS,or other Third Party inspection |
Application
Petroleum and petrochemical equipment, such as reactors in petrochemical equipment, etc.
Sulfuric acid storage and transportation equipment, such as heat exchanger.
* Power plant flue gas desulfurization device, the main use parts are: absorption tower body, flue, door plate, internal parts, spray system, etc.
Scrubbers and fans in organic acid treatment systems.
* Seawater treatment equipment, seawater heat exchanger, paper industry equipment, sulfuric acid, nitric acid equipment, acid making, pharmaceutical industry and other chemical equipment, pressure vessels, food equipment.
* Pharmaceutical factory: centrifuge, reactor, etc.
* Plant foods: soy sauce jars, cooking wine, salt jars, equipment and dressings.
* Matching welding material model: electrode (E385-16/17), wire (ER385).
904L stainless steel plate is versatile, with good corrosion resistance, heat resistance, low temperature strength and mechanical characteristics; Stamping bending and other hot processing good, no heat treatment hardening phenomenon. Widely used in household products (1, 2 types of tableware), cabinets, indoor pipelines, water heaters, boilers, bathtubs, auto parts, medical equipment, building materials, chemical, food industry, agriculture, ship parts.
Chemical Composition
904L Chemical composition: | |||||||||
Grade | C % | Si % | Cr % | Mn % | Si % | P % | S % | N% | Cu% |
904L | 0.03 | 1 | 18.00-20.00 | 3.-4.0 | ≤0.75 | 0.035 | ≤0.03 | 0.1 | 4.0-5.0 |
Mechanical Property
SS 904L Mechanical Property Standard | ||
Tensile strength σ B (MPa) | Conditional yield strength σ0.2 (MPa) | Elongation δ5 (%) |
≥490 | ≥220 | ≥35 |
Corrosion Resistance
In the case of general heat treatment and welding, there will be no carbide precipitation, eliminating the risk of intergranular corrosion after general heat treatment and welding. Due to its high chromoly content and the addition of copper, 904L can be passivated even in reducing environments such as sulfuric acid and formic acid. The high nickel content results in low corrosion rate even in active state. In the concentration range of 0~98% pure sulfuric acid, 904L can be used at temperatures up to 40 degrees Celsius. In the range of 0~85% concentration of pure phosphoric acid, its corrosion resistance is very good. In industrial phosphoric acid produced by wet process, impurities have a strong effect on corrosion resistance. Among all phosphoric acids, 904L has better corrosion resistance than ordinary stainless steel. In highly oxidizing nitric acid, 904L has lower corrosion resistance than high-alloyed steel without molybdenum. In hydrochloric acid, the use of 904L is limited to the lower concentrations of 1-2%. In this concentration range. The corrosion resistance of 904L is better than that of conventional stainless steel. 904L steel has high resistance to point corrosion. It also has good corrosion resistance to cracks in chloride solution. The high nickel content of 904L reduces corrosion rate in pitting and crevices. Ordinary austenitic stainless steels may be sensitive to stress corrosion in a chloride-rich environment at temperatures above 60 degrees Celsius. This sensitization can be reduced by increasing the nickel content of stainless steels. Due to its high nickel content, 904L is highly resistant to stress corrosion cracking in chloride solutions, concentrated hydroxide solutions, and hydrogen sulfide rich environments.
Corrosion Resistance
In the case of general heat treatment and welding, there will be no carbide precipitation, eliminating the risk of intergranular corrosion after general heat treatment and welding. Due to its high chromoly content and the addition of copper, 904L can be passivated even in reducing environments such as sulfuric acid and formic acid. The high nickel content results in low corrosion rate even in active state. In the concentration range of 0~98% pure sulfuric acid, 904L can be used at temperatures up to 40 degrees Celsius. In the range of 0~85% concentration of pure phosphoric acid, its corrosion resistance is very good. In industrial phosphoric acid produced by wet process, impurities have a strong effect on corrosion resistance. Among all phosphoric acids, 904L has better corrosion resistance than ordinary stainless steel. In highly oxidizing nitric acid, 904L has lower corrosion resistance than high-alloyed steel without molybdenum. In hydrochloric acid, the use of 904L is limited to the lower concentrations of 1-2%. In this concentration range. The corrosion resistance of 904L is better than that of conventional stainless steel. 904L steel has high resistance to point corrosion. It also has good corrosion resistance to cracks in chloride solution. The high nickel content of 904L reduces corrosion rate in pitting and crevices. Ordinary austenitic stainless steels may be sensitive to stress corrosion in a chloride-rich environment at temperatures above 60 degrees Celsius. This sensitization can be reduced by increasing the nickel content of stainless steels. Due to its high nickel content, 904L is highly resistant to stress corrosion cracking in chloride solutions, concentrated hydroxide solutions, and hydrogen sulfide rich environments.