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253MA Stainless Steel Seamless Pipe S30815 1.4835 Heat Resistant
| Place of Origin | China |
|---|---|
| Brand Name | DELTA |
| Certification | ISO |
| Model Number | 253ma / S30815 / 1.4835 |
| Minimum Order Quantity | 500 kgs |
| Price | 5-10 USD/Kg |
| Packaging Details | standard packing for export |
| Delivery Time | 5 - 12 days based on the quantity |
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 3 Ton per week |
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xProduct Details
| Products | Stainless Steel Seamless Pipe | Grade | 253ma / S30815 / 1.4835 |
|---|---|---|---|
| Diameter | DN10 - DN400 | Length | 6m Or Custom Cutting Any Length As Request |
| Standard | ASTM EN | Service | Cutting |
| Loading Port | Shanghai Port | Thickness | 4.0 - 50.0mm |
| Highlight | 253MA stainless steel pipe,heat resistant seamless pipe,S30815 stainless steel tube |
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Product Description
Heat Resistant Stainless Steel Alloy 1.4835 SS Pipe 253MA Stainless Steel S30815 Pipe Tube
Products Specification
| Products Name | 253ma Stainless Steel Seamless Pipe |
Grade: |
304 304L 309S 310S 314 316L 316Ti 321 329 347H 410 2205 2507 S32760 904L 254SMO and equal grade in GB JIS EN DIN Standard |
| Standards: | ASTM A213M-94b ASTM A249M-94a ASTM A269-94a ASTM A312M-94b,ect. |
| DIN 17456-85 DIN 17458-85 DIN 17459-92.ect | |
| JIS G3446-1994 JIS G3448-1997 JIS G3459-1997 JIS G3463-1994,ect. | |
| GB13296-1991 GB14975-2002 GB14976-2002,ect. | |
| Size: | ND5 - DN400 |
| Length: | 6m length or cutting any length as request |
| Applications: | fluid and gas transport, structure , boiler, heat exchanger, super heater |
253MA is a premium austenitic heat-resistant stainless steel designed for high-temperature applications, renowned for its exceptional oxidation resistance and mechanical strength at elevated temperatures. It is alloyed with high levels of chromium, nickel, silicon, and trace rare earth elements (notably cerium), which enhance its performance in harsh environments. Below is a detailed overview combining descriptive text and tables.
Key Characteristics of 253MA Stainless Steel
253MA stands out due to its unique alloy design, which promotes the formation of a dense, protective oxide layer (Cr₂O₃ and SiO₂) on its surface, enabling long-term service at temperatures up to 1150°C. Its high nitrogen content improves mechanical strength, while cerium addition refines grain structure and enhances oxidation resistance. This makes it ideal for replacing more expensive nickel-based alloys in many high-temperature industrial scenarios.
1. Chemical Composition (Weight %)
The precise chemical makeup of 253MA is critical to its performance, as shown in the table below:
| Element | Content Range (%) | Role in Alloy |
|---|---|---|
| Chromium (Cr) | 20.0 - 22.0 | Forms protective oxide layer; enhances oxidation resistance |
| Nickel (Ni) | 10.0 - 12.0 | Stabilizes austenitic structure; improves ductility |
| Silicon (Si) | 1.40 - 2.00 | Aids in forming dense SiO₂ layer; boosts high-temperature oxidation resistance |
| Manganese (Mn) | ≤1.00 | Improves workability |
| Carbon (C) | 0.05 - 0.10 | Enhances high-temperature strength |
| Nitrogen (N) | 0.14 - 0.20 | Strengthens austenitic matrix; increases hardness |
| Cerium (Ce) | 0.03 - 0.08 | Refines grain boundaries; improves oxide layer adhesion |
| Others | ≤0.03 (P), ≤0.015 (S) | Minimized to avoid embrittlement |
2. Mechanical Properties
253MA exhibits excellent mechanical performance at both room and high temperatures, as summarized below:
| Property | Room Temperature | At 800°C |
|---|---|---|
| Tensile Strength (MPa) | ≥600 | ≥100 |
| Yield Strength (MPa) | ≥300 | ≥60 |
| Elongation (%) | ≥40 | ≥25 |
| Hardness (HV) | ≤200 | - |
3. Equivalent Grades (International Standards)
253MA is standardized under various international systems, with the following equivalent designations:
| Standard/System | Equivalent Grade |
|---|---|
| EN (European) | 1.4835; X9CrNiSiNCe21-11-2 |
| ASTM/UNS (USA) | S30815; F45 (for forgings) |
| GB (China) | 1Cr21Ni11Si2NCe |
| SSAB (Sweden) | SS2368 |
| Trade Name | 253ma |
4. Typical Applications
Due to its superior high-temperature performance, 253MA is widely used in:
- Industrial furnaces (radiant tubes, furnace rolls, burners)
- Waste incineration plants (superheater tubes)
- Petrochemical industry (cracking furnace tubes)
- Automotive exhaust systems (high-temperature segments)
- Nuclear power auxiliary systems (heat exchange components)
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