Overview
Grade 253MA stainless steel (1.4835 / UNS S30815) is a heat-resistant austenitic stainless steel designed for applications requiring excellent oxidation resistance and high strength at elevated temperatures. Its chromium, nickel, silicon and nitrogen content, combined with the addition of rare earth elements, provides excellent resistance to scaling and high-temperature corrosion.
253MA stainless steel offers good creep strength, structural stability and resistance to repeated heating and cooling cycles. These properties make it particularly suitable for furnace components, heat treatment equipment and other demanding industrial applications. Under suitable operating conditions, 253MA can withstand temperatures of up to approximately 1150°C in air.
Form of Supply
• 253MA Sheet
• 253MA Plate
• 253MA Round Bar
• 253MA Wire
• 253MA Tube & Pipe
Nationwide Stainless is an independent UK stainless steel stockholder and processor, supplying specialist stainless steel materials to a wide range of industries. With extensive processing capabilities, we can assist with both standard material requirements and custom-processed products.
Depending on availability, we can offer stock-size plate and sheet, stock-length round bar, cut-to-size plate and sheet, cut-to-length round bar, forming and additional machining services to meet individual project requirements.
Please send any enquiries to sales@nationwidestainless.co.uk.
Applications
• Furnace components
• Heat treatment baskets
• Refractory anchors
• Heat exchangers
• Burner components
• Furnace tubes
• Cement kiln components
• Recuperators
• Combustion equipment
• Petrochemical equipment
• Steel mill equipment
• High-temperature ducting
• Flue gas components
• Industrial heating equipment
• Thermal processing equipment
Corrosion Resistance
253MA stainless steel (1.4835) offers excellent resistance to oxidation at elevated temperatures, particularly in environments involving repeated heating and cooling cycles. The combination of chromium, silicon and rare earth elements promotes the formation of a protective oxide layer, helping to reduce scaling and surface deterioration during high-temperature service.
The grade also provides good resistance to combustion gases and certain carburising atmospheres, making it suitable for a variety of industrial heating applications. In suitable conditions, 253MA stainless steel can operate at temperatures up to approximately 1150°C.
However, exposure to certain corrosive gases, sulphur compounds and other aggressive environments can reduce the maximum recommended service temperature. Operating conditions should therefore be assessed when selecting 253MA for high-temperature applications.
Typical Analysis
Chemical composition (%), typical specification limits for UNS S30815.
253MA | Cr% | Ni% | C% | Si% | Mn% | P% | S% | N% | Ce% |
|---|---|---|---|---|---|---|---|---|---|
MIN | 20.0 | 10.0 | 0.05 | 1.40 | - | - | - | 0.14 | 0.03 |
MAX | 22.0 | 12.0 | 0.10 | 2.00 | 0.80 | 0.040 | 0.030 | 0.20 | 0.08 |
Iron (Fe) forms the balance of the composition.
Mechanical Properties
The properties quoted below are guideline figures only and should not be used for any design purposes.
Specified minimum room-temperature mechanical properties for UNS S30815 flat-rolled products, with maximum hardness values.
Property | Value |
|---|---|
Tensile Strength (N/mm²) | 600 minimum |
0.2% Proof Strength (N/mm²) | 310 minimum |
Elongation (%) | 40 minimum |
Hardness (HB) | 217 maximum |
Hardness (HRB) | 95 maximum |
Related Specs & Trade Names
253MA, 1.4835, UNS S30815, X9CrNiSiNCe21-11-2, EN 10095, ASTM A240, ASTM A276, ASTM A213, ASTM A312, Grade F45, Heat Resistant Stainless Steel, Austenitic Stainless Steel.
