EN 10297-1 Grade E355 Carbon Steel Seamless Tubes
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EN 10297-1 Grade E355 carbon steel seamless tubes are commonly referred to as mild steel pipes and tubes. These low-cost, low carbon steel tubes have a maximum carbon content of 0.22% and a manganese content of up to 1.60%, making them easy to form and shape. Manufactured according to EN specifications, they are often called carbon steel (CS) or mild steel (MS) pipes. While low carbon steel pipes are not as hard as high carbon steel pipes, processes like carburizing can enhance their surface hardness.
This standard requires the use of deoxidized or killed steel grades for producing E355 steel tubes. The outside diameter of these tubes comes with a tolerance for out-of-roundness, while the thickness tolerance considers eccentricity. The tubes are delivered with square cut ends, which should be free of excessive burrs. A visual inspection of the tubes should reveal no external or internal surface defects. If any surface imperfections are present, they can be removed through grinding or machining, provided that the tube thickness in the treated area remains above the specified minimum wall thickness.
Specifications of EN 10297-1 Grade E355
| Steel grades: | E235, E315, E275, E470, E355 |
| Delivery condition: | Normalized rolled, Hot finished, Normalized |
| Size range: | Outside Dia 70-610mm, WT 4-35mm, according to EN 10297-1:2003 |
| Dimensions and tolerances: | according to EN 10297-1 |
| Marking |
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| Test: | tensile test, Cast analysis, visual inspection, electromagnetic test |
| Certification: | CPR(2011/305/EU) |
Composition Standard of EN 10297-1 Grade E355 Tubes
| Silicon | Carbon | Manganese | Sulphur | Phosphorous | Molybdenum | Chromium | Nickel | Copper | Others |
| max 0.55 | max 0.22 | max 1.60 | 0.035 | 0.03 | – | – | – | – | – |
Mechanical Properties of EN10297 Seamless Tube
| Yield Strength | Elongation A5 min | Tensile Strength | |||
| MPa min | ksi min | Percentage | MPa min | MPa min | ksi min |
| 20 | 490 | – | – | ||
EN 10297-1 E355 Equivalent Grade
| Product | EN | DIN | BS | ASTM | NFA | ASME |
|---|---|---|---|---|---|---|
| 10297-1 Grade 20NiCrMo2-2 | 10297-1 Grade 20NiCrMo2-2 | − | − | − | − | − |
| 10297-1 Grade E235 | 10297-1 Grade E235 | − | − | − | − | − |
| 10297-1 Grade E275 | 10297-1 Grade E275 | − | − | − | − | − |
| 10297-1 Grade E315 | 10297-1 Grade E315 | − | − | − | − | − |
| 10297-1 Grade E355 | 10297-1 Grade E355 | − | − | − | − | − |
| 10297-1 Grade E275K2 | 10297-1 Grade E275K2 | − | − | − | − | − |
| 10297-1 Grade E355K2 | 10297-1 Grade E355K2 | − | − | − | − | − |
| 10297-1 Grade C60E | 10297-1 Grade C60E | DIN 17204 Grade C60 | − | − | ASTM SAE Grade 1060 | − |
| 10297-1 Grade 38Mn6 | 10297-1 Grade 38Mn6 | − | − | − | − | − |
| 10297-1 Grade C22 | 10297-1 Grade C22 | DIN 17204 Grade C22 | NFA A 35-552 Grade XC 25 | ASME SA 519 Grade 1020 | ASTM A519 Grade 1020 | − |
| 10297-1 Grade C35 | 10297-1 Grade C35 | DIN 17204 Grade C35 | NFA A 49-311 Grade TU XC 35 | ASME SA 519 Grade 1035 | ASTM A519 Grade 1035 | − |
| 10297-1 Grade C45 | 10297-1 Grade C45 | DIN 17204 Grade C45 | NFA A35-552 Grade XC 48 H 1 | ASME SA 519 Grade 1045 | ASTM A519 Grade 1045 | − |
| 10297-1 Grade C60 | 10297-1 Grade C60 | − | − | − | − | − |
| 10297-1 Grade 20MnV6 | 10297-1 Grade 20MnV6 | − | − | − | − | − |
| 10297-1 Grade 25CrMo4 | 10297-1 Grade 25CrMo4 | DIN 17200 Grade 25CrMo4 | NFA Grade 25CrMo4 | − | − | − |
| 10297-1 Grade 34CrMo4 | 10297-1 Grade 34CrMo4 | DIN 17204 Grade 34CrMo4 | NFA A35-552 Grade 34 CD 4 | − | ASTM A 519, SAE, A Grade 4135 | − |
| 10297-1 Grade 42CrMo4 | 10297-1 Grade 42CrMo4 | DIN 17204 Grade 42CrMo4 | NFA − Grade 42CrMo4 | − | ASTM A 519, SAE, A Grade 4142 | − |
| 10297-1 Grade C22E | 10297-1 Grade C22E | DIN 17204 Grade Ck22 | − | ASME SA 519 Grade 1025 | ASTM A519 Grade 1025 | − |
| 10297-1 Grade C35E | 10297-1 Grade C35E | DIN 17204 Grade Ck35 | NFA A 35-552 Grade XC 32 | ASME SA 519 Grade 1035 | ASTM A519 Grade 1035 | − |
| 10297-1 Grade C45E | 10297-1 Grade C45E | DIN 17204 Grade Ck45 | − | ASME SA 519 Grade 1045 | ASTM A519 Grade 1045 | − |
| 10297-1 Grade C10E | 10297-1 Grade C10E | DIN 17210 Grade Ck10 | − | ASME SA 519 Grade 1010 | ASTM A519 Grade 1010 | − |
| 10297-1 Grade C15E | 10297-1 Grade C15E | DIN 17210 Grade Ck15 | NFA A 35-552 Grade XC 18 | ASME SA 519 Grade 1016 | ASTM A519 Grade 1016 | − |
| 10297-1 Grade C15R | 10297-1 Grade C15R | DIN 17210 Grade Cm15 | NFA A 35-551 Grade XC 18 | ASME SA 519 Grade 1016 | ASTM A519 Grade 1016 | − |
Standard length tolerances
| Component length (mm) | OD 30-100 mm | OD 100-254 mm |
|---|---|---|
| 10-100 | + 1.0/- 0 | + 2.0/- 0 |
| 100-600 | + 2.0/- 0 | + 3.0/- 0 |
| 600-1200 | + 3.0/- 0 | + 4.0/- 0 |
| 1200-5000 | + 5.0/- 0 | + 6.0/- 0 |
EN 10297-1 Application
EN 10297-1 Grade E355 tubes are primarily used in the automotive sector for manufacturing structural components.
- Automobile Sectors
- Interior & Exterior Architectural Structures
- Water pipe lines
- Gas lines
- Oil & Gas industries
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FAQs
EN 10297-1 is a standard that specifies requirements for non-alloy and alloy steel grades used for general engineering and mechanical purposes. These steel grades are characterized by their chemical composition, including carbon, silicon, manganese, phosphorus, and sulfur. The alloyed EN 10297-1 tubes are known for their strength and are utilized in various engineering applications due to their robust mechanical properties.
EN 10305-4 Grade E355 is a type of carbon steel used for seamless tubes. This grade is characterized by its low carbon content (up to 0.22%) and moderate manganese content (up to 1.60%). E355 steel is known for its good machinability and ease of forming and shaping, making it suitable for various applications in the mechanical and engineering fields. It is commonly used in the production of pipes and tubes where moderate strength and flexibility are required.
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