SS 1.4841, a high-alloy stainless steel, comprises chromium (24-26%), nickel (19-22%), low carbon content, and balances like manganese, silicon, and iron. This allows for excellent oxidation resistance, even with prolonged exposure to high temperatures.

The UNS (Unified Numbering System) code S31000 and the EN designation 1.4841 standardized the material on a global scale for heat-intensive and corrosive environments, as well as verified its mechanical and chemical properties.

Some key properties that cause SS 1.4841 sheets and plates to be the choice in extreme conditions include:

Exceptional Heat Resistance
High temperature resistance to continuous exposure up to 1150 degrees.
Practical for intermittent service up to 1035°C
Also useful for any thermal cycling and variable heat applications
Reinforcement of Resistance to Oxidation and Corrosion
Oxidation, sulfidation, and carburization resistant
Meant for more mild carburizing and nitriding atmospheres
High Mechanical Strength
Tensile Strength: 515–690 MPa
Strength (0.2% curve); ≈ 205 MPa²
Retains structural integrity on thermal and mechanical load
Good Fabricability and Weldability
All standard fabrication methods are supported
Suitable for some welding methods, such as TIG, MIG, and SMAW
Post-weld heat (PWHT) treatment is normally not essential
Extended Service Life
Refuses the formation of scales and fatigue of metals
Provides durable and reliable service for many years, optimizing maintenance and replacement expenses

Because of its heat and corrosion resistance, SS 1.4841 is employed in sectors where standard stainless steels may fall short. Key applications include:

Refining and Petrochemical Facilities
Best suited for reactors, reformers, heat exchangers and flue gas systems.
Power Generation.
Used in superheater systems and boiler components and in heat-thermal systems that must withstand extremely high temperatures.
Manufacturing of cement and steel
Utilized in kiln assemblies, conveyor systems and structural supports that may be exposed to high temperatures.
Food Processing and Reiki Center
Ideal for high-temperature sanitation and corrosion resistance environments.

Compared to the more frequently chosen stainless steels, such as SS 304 or SS 316, SS 1.4841 stands out clearly in high temperature applications:

Although SS 304 and 316 are good under moderate temperature, they will not withstand heat.
SS 1.4841 maintain both mechanical strength and corrosion resistance at elevated temperatures and in oxidizing environments.
SS 1.4841, although an expensive counterpart, offers a better lifecycle value translated into durability and lower maintenance.
Welding and Fabrication Considerations
SS 1.4841 material is very weldable and allows a number of fabrication methods:
It is advised to use low heat input to avoid distortion.
You usually do not need to preheat.
Filler metals, like 310 electrodes, match and give the joint more integrity.
This makes the material suitable for hot and cold forming with no risk of cracking, which is ideal for custom components and complex designs.

FAQ (Frequently Asked Questions)

Q1: Is SS 1.4841 magnetic?

No, SS 1.4841 is austenitic stainless steel and is non-magnetic in the annealed condition.

Q2: What are the standard sizes and thicknesses?

The thickness is generally available between 4 mm and 100 mm, and the width goes up to 2,000 mm. According to application needs custom lengths may be provided.

Q3: Can SS 1.4841 be used for chloride-rich environments?

Although it provides good heat resistance, SS 1.4841 is laboratory-tested less resistant to chloride-induced corrosion than molybdenum-enhanced grades such as 316L, so adequate design considerations and routine maintenance are suggested in these environments.

SS 1.4841 UNS S31000 sheet and plates are designed for high-temperature and high-stress applications. This level of performance-level durability has made this stainless steel grade a go-to option in industries where working conditions can be high-pressure.

For industrial furnaces, petrochemical reactors, or power systems, SS 1.4841 provides long-term, consistent value. SS 1.4841 — A Proven Solution for Those Looking for a Reliable heat and Corrosion-Resistant Material