EN 1.4841 Stainless Steel Plate and Sheet

What is EN 1.4841 stainless steel plate?

EN 1.4841 (AISI 314 / X15CrNiSi25-21) is a high-alloy, heat-resistant austenitic stainless steel plate designed for extreme high-temperature applications up to 1150°C (2102°F). With high levels of chromium (24.0%–26.0%), nickel (19.0%–22.0%), and silicon (1.5%–2.5%), the material forms a highly adherent protective oxide layer, effectively resisting oxidation, carburization, and thermal shock. It is widely used in applications such as industrial furnace linings, heat treatment baskets, boiler baffles, and petrochemical cracking units.

 

Chemical Composition of EN 1.4841 Stainless Steel

Chemical Element	EN 1.4841 (wt %) / EN 10088-1	AISI 314 Equivalent (wt %)
Chromium (Cr)	24.00% – 26.00%	23.00% – 26.00%
Nickel (Ni)	19.00% – 22.00%	19.00% – 22.00%
Silicon (Si)	1.50% – 2.50%	1.50% – 2.50%
Manganese (Mn)	≤ 2.00%	≤ 2.00%
Carbon (C)	≤ 0.20%	≤ 0.25%
Phosphorus (P)	≤ 0.045%	≤ 0.045%
Sulfur (S)	≤ 0.015%	≤ 0.030%

 

Mechanical Properties of EN 1.4841 Stainless Steel

Physical / Mechanical Property	Room Temperature (20°C)	High Temperature (800°C)	High Temperature (1000°C)
Tensile Strength (Rm)	550 – 750 MPa	≈ 220 MPa	≈ 80 MPa
Yield Strength (Rp0.2)	≥ 230 MPa	≈ 110 MPa	≈ 35 MPa
Elongation (A5)	≥ 30%	≥ 35%	≥ 40%
Maximum Service Temperature	-	1150°C (Continuous Service)	1100°C (Intermittent Service)
Density	7.9 g/cm³	-	-

 

EN 1.4841 vs. 1.4845 vs. 1.4828: Key Differences

Selection Criteria	EN 1.4841 (AISI 314 / UNS S31400)	EN 1.4845 (AISI 310S / UNS S31008)	EN 1.4828 (AISI 309 / UNS S30900)
Maximum Continuous Service Temperature	1150°C (2102°F)	1100°C (2012°F)	1000°C (1832°F)
Silicon Content (Si)	1.50% – 2.50%	≤ 1.50%	1.50% – 2.00%
Carburization Resistance	Excellent - high Si content reduces carbon diffusion and improves surface stability	Moderate - suitable for oxidizing atmospheres but less resistant to carburizing environments	Fair - limited protection in carbon-rich high-temperature atmospheres
Oxidation Resistance	Superior - enhanced by high Si + Cr content forming stable protective oxide layers	Very High - high Cr and Ni content provide strong oxidation resistance	Good - reliable oxidation resistance for moderate high-temperature applications
Typical Applications	Furnace muffles, heat treatment boxes, radiant tubes, furnace components, high-temperature processing equipment	Boiler tubes, burner nozzles, furnace parts, petrochemical heat exchangers	Kiln linings, oven baffles, furnace doors, combustion equipment

 

EN 1.4841 Stainless Steel Plate & Sheet Applications

Thanks to its immunity to heavy scaling at temperatures exceeding 1000°C, EN 1.4841 plate and sheet stock is specified across thermal processing sectors:

Industrial Furnace Engineering: Heat treatment furnace linings, muffles, retorts, conveyor belts, and annealing covers.

Thermal & Power Generation: Boiler baffles, soot blower tubes, coal gasifier internal components, and burner grids.

Petrochemical Processing: Hydrocarbon cracking tubes, catalyst regenerator internals, and flare stack tips.

Glass & Cement Industry: Cement kiln nose rings, glass melting furnace components, and refractory anchors.

 

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Why choose GNEE for EN 1.4841 steel plates and strips?

As a leading global supplier of industrial stainless steel, GNEE Group streamlines the material procurement process by offering end-to-end technical support and inventory solutions:
Comprehensive Inventory & Specifications: Stock includes cold-rolled sheets (0.5 mm–3.0 mm) and hot-rolled heavy plates (3.0 mm–100 mm), available in standard sizes (1500 x 6000 mm, 2000 x 8000 mm) as well as custom-cut dimensions.

In-house Processing Services: Services include precision plasma cutting, laser cutting, waterjet cutting, bending, shearing, and surface finishing (No.1, 2B, BA).

Strict Quality Assurance: Every shipment is accompanied by an original Mill Test Certificate (MTC) compliant with EN 10204 3.1 standards, verifying heat analysis, mechanical tensile/yield test results, and non-destructive testing (NDT) data.
100% PMI Material Verification: On-site Positive Material Identification (PMI) testing is conducted prior to shipment to ensure chemical compositions-specifically Silicon (Si), Nickel (Ni), and Chromium (Cr)-fully meet standards.

 

Global Logistics & Packaging: We utilize waterproof packaging, wooden pallet support, and heavy-duty export packaging to eliminate the risk of deformation or corrosion during transit.

 

FAQ

Q1: Is EN 1.4841 stainless steel weldable?
A: Yes, EN 1.4841 can be welded using standard processes such as TIG (GTAW) and MIG (GMAW). Matching filler materials, such as Thermanit 25/20 or AWS E314/ER314, should be used. Preheating is generally not required, but heat input should be controlled to limit grain growth and reduce the risk of hot cracking.

 

Q2: What are the advantages of the high silicon (Si) content in EN 1.4841?
A: Silicon significantly improves the material's resistance to high-temperature oxidation by enabling the formation of a dense secondary silicon oxide layer beneath the chromium oxide film; additionally, it enhances resistance to carburization in the carburizing atmospheres commonly found in heat treatment furnaces.

 

Q3: What is the lead time for EN 1.4841 stainless steel plates?
A: For standard stock plates (thicknesses ranging from 1.5 mm to 20 mm), processing, inspection, and packing for shipment can be completed within 3 to 7 working days; orders requiring custom-size cutting or heavy plates typically take 7 to 12 days.