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EN 10294-1 outlines the specifications for hollow steel tubes, particularly focusing on seamless precision steel tubes used in machining applications. This standard covers various steel grades, including E355, E355J2, E470, E420J2, and E590K2, each with distinct properties and applications.
The materials used in the production of these hollow steel tubes are alloy steels, which provide enhanced mechanical properties and resistance to wear and tear. These tubes are designed for high-performance applications, particularly in the automotive and engineering sectors.
The specifications for these tubes include dimensions, tolerances, and surface quality, ensuring they meet the rigorous demands of precision machining.
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Mo (%) | Ni (%) |
|---|---|---|---|---|---|---|---|---|
| E355 | 0.22-0.25 | 0.15-0.40 | 1.20-1.60 | ≤0.025 | ≤0.015 | - | - | - |
| E355J2 | 0.22-0.25 | 0.15-0.40 | 1.20-1.60 | ≤0.025 | ≤0.015 | - | - | - |
| E470 | 0.25-0.30 | 0.15-0.40 | 1.20-1.60 | ≤0.025 | ≤0.015 | 0.40-0.60 | - | - |
| E420J2 | 0.20-0.25 | 0.15-0.40 | 1.20-1.60 | ≤0.025 | ≤0.015 | 0.40-0.60 | 0.10-0.15 | - |
| E590K2 | 0.30-0.35 | 0.15-0.40 | 1.20-1.60 | ≤0.025 | ≤0.015 | 0.40-0.60 | 0.10-0.15 | 0.40-0.60 |
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| E355 | ≥ 355 | 490-630 | ≥ 22 | ≤ 197 |
| E355J2 | ≥ 355 | 490-630 | ≥ 22 | ≤ 197 |
| E470 | ≥ 470 | 570-700 | ≥ 20 | ≤ 207 |
| E420J2 | ≥ 420 | 540-670 | ≥ 20 | ≤ 207 |
| E590K2 | ≥ 590 | 680-800 | ≥ 18 | ≤ 217 |
The steel grades specified in EN 10294-1 are designed to meet specific mechanical and chemical requirements, ensuring they are suitable for various applications.
These hollow steel tubes are widely used in:
While the specified grades are optimal for many applications, alternative grades may also be considered based on specific requirements:
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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