904L stainless steel plate

What is 904L Stainless Steel Plate

904L (N08904,,14539) super austenitic stainless steel contains 14.0-18.0% chromium, 24.0-26.0% nickel, 4.5% molybdenum.
904L super austenitic stainless steel is a low carbon, high nickel, molybdenum austenitic stainless steel, which is the exclusive material of H·S company from France.
It has good activation – passivation conversion ability, excellent corrosion resistance, in non-oxidizing acid such as sulfuric acid, acetic acid, formic acid, phosphoric acid has good corrosion resistance, in neutral medium containing chloride ion has good pitting resistance, and has good crack corrosion resistance and stress corrosion resistance.
Applicable to all concentrations of sulfuric acid below 70℃, under normal pressure any concentration, any temperature of acetic acid, and formic acid and acetic acid in the mixture of corrosion resistance is also very good.

Super austenitic stainless steel 904L (00Cr20Ni25Mo4.5Cu;
UNS: N08904;
EN: 1.4539) is a low carbon, high-alloy austenitic stainless steel with excellent corrosion resistance in dilute sulfuric acid. It is designed for harsh corrosion conditions.
Has the high chromium content and plenty of nickel content, the addition of copper makes it have strong ability to resist acid, especially for chloride clearance corrosion and stress corrosion cracking are highly resistant, not easy to appear, erosion and fracture pitting resistance slightly better than other steel grade, good machinability and weldability, can be used for pressure vessels.

Since the carbon content of 904L is very low (Max. 0.020%), there will be no carbide precipitation during normal heat treatment and welding.
This eliminates the risk of intergranular corrosion that normally occurs after heat treatment and welding.
Due to the high chromium, nickel, molybdenum 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 makes it have a low corrosion rate in the active state.
In the concentration range of 0 to 98% pure sulfuric acid, 904L can be used at temperatures up to 40 degrees Celsius.
Its corrosion resistance is very good in pure phosphoric acid in the concentration range of 0~85%.
In industrial phosphoric acid produced by wet process, impurity has a strong effect on corrosion resistance.
Of all the phosphoric acids, 904L has superior corrosion resistance to ordinary stainless steel.
In highly oxidizing nitric acid, 904L has poor corrosion resistance compared to highly alloyed steels without molybdenum.
In hydrochloric acid, the use of 904L is limited to lower concentrations of 1-2%.
It’s in this concentration range.
The corrosion resistance of 904L is better than that of conventional stainless steel.
904L steel has high resistance to pitting corrosion.
It also has excellent crevice corrosion resistance in chloride solutions.
The high nickel content of 904L reduces the corrosion rate in pits and crevices.
Ordinary austenitic stainless steels may be sensitive to stress corrosion at temperatures above 60 ° C in a chloride-rich environment, and this sensitivity can be reduced by increasing the nickel content of the stainless steels.
Due to its high nickel content, 904L is highly resistant to stress corrosion cracking in chloride solutions, concentrated hydroxide solutions and hydrogen sulphide-rich environments.

904L Stainless Steel Plate production line

KUAIMA steel company has more than ten years of experience in diversified operations and multi-product transactions, involving round bar, ship plate, seamless pipe, plate, coil, wire, bright bar, pipe fittings and a wide range of carbon steel, alloy steel And more product sizes of stainless steel materials, these products we produce meet national and international quality standards, such as ASTM, ASME, DIN, JIS, ISO, etc. The company has 25 production lines for various products, with an annual output of 500,000 tons, and is committed to Provide high-quality steel products and provide supporting services and solutions for global customers. Welcome to KUAIMA steel company.

904L Characteristic machining technology

1D — The surface has discontinuous granular shape, also known as fog surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2D – A slightly silvery white colour.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2B — Silver white with better gloss and flatness than a 2D surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + quenching and tempering rolling.
Ba – Excellent surface gloss, high reflectivity, like a mirror surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + surface polishing + quenching and tempering rolling.
No.3 — Good gloss, coarse grain surface.
Processing technology: polishing and tempering rolling for 2D or 2B with 100~120 abrasive materials (JIS R6002).
No.4 — Good gloss, fine lines on the surface.
Processing process: polishing and tempering rolling for 2D or 2B with 150~180 abrasive materials (JIS R6002).
HL — Silver grey with hair streaks.
Processing technology: 2D products or 2B products with appropriate granularity of abrasive materials for polishing the surface is a continuous abrasive grain.
MIRRO — Specular.
Processing technology: 2D products or 2B products with appropriate granularity of the grinding material grinding and polishing to the mirror effect.

Chemical composition of 904L Stainless Steel Plate

Mechanical property of 904L Stainless Steel Plate

Product specifications of 904L Stainless Steel Plate

Related Products

904L stainless steel plate

904L Stainless Steel Plate application industry

904L Stainless Steel Plate are mainly used in chemical, petrochemical, marine engineering, seawater pipelines, seawater desalination and other industries, nuclear engineering, paper and pulp industry.

oil and gas

Kuaima Steel provides a complete set of equipment and installations for drilling, transportation and storage in the oil and gas industry.

energy

Kuaima Steel serves the entire service cycle of power generation and synchronous activities in design, construction, repair and maintenance.

construction

Kuaima Steel provides comprehensive products and services for infrastructure, bridges, pipelines, etc.

marine

Kuaima Steel is a trusted supplier for subsea to surface operations and shipbuilding operations.

We supply and export 904L Stainless Steel Plate in following countries

Malaysia, United Arab Emirates, Indonesia, Saudi Arabia, Iran, Qatar, India, China, United Kingdom, Singapore, Canada, Thailand, Korea, Turkey, Philippines, Egypt, Germany, Italy, Japan, Russia, Vietnam, Australia, South Africa , Portugal, Morocco, Costa Rica, Kazakhstan, Netherlands, Mexico, Brazil, France, Spain, Nigeria, Bangladesh, Kuwait, Iraq, Ukraine, Poland, Jordan, Romania, Oman, Hong Kong, Venezuela, Colombia, Norway, Chile, Te Trinidad and Tobago, Greece, Czech Republic, Belgium, Sri Lanka, Cyprus, Angola, Myanmar (Burma), United Kingdom, Canada, Korea, Thailand, Netherlands, Spain, Turkey, Australia, Mexico, Pakistan, Vietnam, Brazil, Philippines, France, Taiwan, Poland, South Africa, Russia, Nigeria, Kuwait, Czech Republic, Norway, Romania, Egypt, Oman, Sweden, Belgium, Hong Kong, Israel, Colombia, Switzerland, Denmark, Finland, Argentina, Venezuela, Peru, Ukraine , Chile, Bangladesh, Portugal, Ireland, Austria, Algeria, Greece, Iraq, New Zealand, Slovakia, Hungary, Kazakhstan, Slovenia, Lithuania, Serbia, Sri Lanka, Bahrain, Bulgaria, Morocco, Tunisia, Croatia, Jordan, Ecuador, Te Trinidad and Tobago, Estonia, Azerbaijan, Ghana, Lebanon, Cyprus, Dominican Republic, Latvia, Libya, Costa Rica, Cambodia, Macedonia (FYROM), Belarus, Jamaica, Palestine, Turkmenistan Belarus, Jamaica, Palestine, Turkmenistan Belarus, Jamaica, Palestine, Turkmenistan and other countries