EN 10305-1 E355 Seamless Precision Steel Tubes Manufacturer and Supplier in India
EN 10305-1 E355 Seamless Precision Steel Tubes are precision steel tubes made by cold drawn process, which are non-alloy precision steel tubes, to meet the requirements of excellent dimensional accuracy, smooth surface finish and high mechanical strength for application. These tubes have an outside diameter of up to 380 mm and are made from a maximum carbon content of 0.22% and manganese of 1.60%, providing excellent machinability, weldability and pressure resistance. They are generally found in hydraulic systems, automotive parts, engineering machines, furniture, and precision mechanical parts which
require uniform tolerances. Amardeep Steel is one of the best sellers and manufacturers of E355 Seamless Precision Steel Tubes in India with high quality tubes in different sizes, competitive pricing and prompt delivery of tubes across the globe with quality assurance.
Technical Data
Specifications of EN 10305-1 Grade E355 Carbon Steel Seamless Pipe and Tubes
| Parameter | Details |
|---|---|
| Standard | EN 10305-1 (also referenced as DIN EN 10305-1 / BS EN 10305-1) - "Steel tubes for precision applications: Seamless cold drawn tubes" |
| Grade | E355 (Material No. 1.0580) |
| Outer Diameter | Up to 380 mm per the standard's scope (commonly stocked range: 6-380 mm; confirm against mill stock) |
| Wall Thickness | Commonly stocked: 1-35 mm (confirm against mill stock - standard lists preferred dimension combinations rather than a fixed ceiling) |
| Production Type | Cold drawn seamless - manufactured from hot-finished seamless hollows, further cold-drawn to size |
| Delivery Condition | +C (cold drawn), +LC (lightly cold drawn), +SR (stress relieved), +A (annealed), +N (normalized) |
| Length | Single random, double random, or cut-to-length (typically up to 12,000 mm; confirm against mill stock) |
| Yield Strength (ReH}) | 355 N/mm2 minimum (in +N condition - varies by delivery condition) |
| Tensile Strength (Rm) | 490-630 N/mm2 (in +N condition) |
| Elongation (A) | 22% minimum (in +N condition) |
| Surface Finish | Precisely defined dimensional tolerances and specified maximum surface roughness (R_a); smooth ID/OD suitable for hydraulic cylinder bores |
| Equivalent Standards | DIN 2391 (predecessor standard); ASTM A519 (approx. equivalent - confirm before citing) |
| Applications | Heavy-duty/high-pressure hydraulic cylinders, automotive components, general mechanical engineering |
| Testing / Certification | EN 10204 3.1 mill test certificate; mandatory tensile test, plus flattening and drift-expansion tests; NDT by eddy current or ultrasonic testing |
Chemical Composition of EN 10305-1 E355 Seamless Precision Steel Tubes
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Altot (%) |
|---|---|---|---|---|---|---|
| E355 | 0.22 max | 0.55 max | 1.60 max | 0.025 max | 0.025 max | 0.020 min |
EN 10305-1 E355 Seamless Precision Steel Tubes Mechanical Properties
| Delivery Condition | Symbol | Tensile Strength Rm (MPa) | Yield Strength ReH (MPa) | Elongation A (%) |
|---|---|---|---|---|
| Cold Drawn / Hard | +C | 640 min. | ReH >=0.8Rm (calculation ratio) | 4 min. |
| Cold Drawn / Soft | +LC | 580 min. | ReH >=0.7Rm (calculation ratio) | 7 min. |
| Cold Drawn & Stress Relieved | +SR | 580 min. | 450 min. | 10 min. |
| Annealed | +A | 450 min. | ReH >=0.5Rm (calculation ratio) | 22 min. |
| Normalized | +N | 490 - 630 | 355 min. | 22 min. |
Equivalent Grades of EN 10305-1 E355 Seamless Precision Steel Tubes
| British Standard (BS) | European Standard (EN) | German Standard (DIN) | Chinese Standard (GB) |
|---|---|---|---|
| BS EN 10305-1 E355 | EN 10305-1 E355 | DIN 2391 St52 | GB/T 3639 Q355B |
Size Chart of EN 10305-1 E355 Seamless Precision Steel Tubes
| Nominal Pipe Size (NPS) | Outside Diameter (O.D.) | Sch 10 / 10S Wall t | Sch 40 / STD Wall t | Sch 80 / XS Wall t | Sch 160 Wall t | XXH Wall t |
|---|---|---|---|---|---|---|
| 1/8" | 0.405" (10.29 mm) | 0.049" (1.24 mm) | 0.068" (1.73 mm) | 0.095" (2.41 mm) | 0.124" (3.15 mm) | 0.194" (4.93 mm) |
| 1/4" | 0.540" (13.72 mm) | 0.065" (1.65 mm) | 0.088" (2.24 mm) | 0.119" (3.02 mm) | 0.145" (3.68 mm) | 0.238" (6.05 mm) |
| 3/8" | 0.675" (17.15 mm) | 0.065" (1.65 mm) | 0.091" (2.31 mm) | 0.126" (3.20 mm) | 0.158" (4.01 mm) | 0.252" (6.40 mm) |
| 1/2" | 0.840" (21.34 mm) | 0.083" (2.11 mm) | 0.109" (2.77 mm) | 0.147" (3.73 mm) | 0.188" (4.78 mm) | 0.294" (7.47 mm) |
| 3/4" | 1.050" (26.67 mm) | 0.083" (2.11 mm) | 0.113" (2.87 mm) | 0.154" (3.91 mm) | 0.219" (5.56 mm) | 0.308" (7.82 mm) |
| 1" | 1.315" (33.40 mm) | 0.109" (2.77 mm) | 0.133" (3.38 mm) | 0.179" (4.55 mm) | 0.250" (6.35 mm) | 0.358" (9.09 mm) |
| 1-1/4" | 1.660" (42.16 mm) | 0.109" (2.77 mm) | 0.140" (3.56 mm) | 0.191" (4.85 mm) | 0.250" (6.35 mm) | 0.382" (9.70 mm) |
| 1-1/2" | 1.900" (48.26 mm) | 0.109" (2.77 mm) | 0.145" (3.68 mm) | 0.200" (5.08 mm) | 0.281" (7.14 mm) | 0.400" (10.16 mm) |
| 2" | 2.375" (60.33 mm) | 0.109" (2.77 mm) | 0.154" (3.91 mm) | 0.218" (5.54 mm) | 0.344" (8.74 mm) | 0.436" (11.07 mm) |
| 2-1/2" | 2.875" (73.03 mm) | 0.120" (3.05 mm) | 0.203" (5.16 mm) | 0.276" (7.01 mm) | 0.375" (9.52 mm) | 0.552" (14.02 mm) |
| 3" | 3.500" (88.90 mm) | 0.120" (3.05 mm) | 0.216" (5.49 mm) | 0.300" (7.62 mm) | 0.438" (11.13 mm) | 0.600" (15.24 mm) |
| 3-1/2" | 4.000" (101.60 mm) | 0.120" (3.05 mm) | 0.226" (5.74 mm) | 0.318" (8.08 mm) | - | 0.636" (16.15 mm) |
| 4" | 4.500" (114.30 mm) | 0.120" (3.05 mm) | 0.237" (6.02 mm) | 0.337" (8.56 mm) | 0.531" (13.49 mm) | 0.674" (17.12 mm) |
| 5" | 5.563" (141.30 mm) | 0.134" (3.40 mm) | 0.258" (6.55 mm) | 0.375" (9.52 mm) | 0.625" (15.88 mm) | 0.750" (19.05 mm) |
| 6" | 6.625" (168.28 mm) | 0.134" (3.40 mm) | 0.280" (7.11 mm) | 0.432" (10.97 mm) | 0.719" (18.26 mm) | 0.864" (21.95 mm) |
| 8" | 8.625" (219.08 mm) | 0.148" (3.76 mm) | 0.322" (8.18 mm) | 0.500" (12.70 mm) | 0.906" (23.01 mm) | 0.875" (22.23 mm) |
| 10" | 10.750" (273.05 mm) | 0.165" (4.19 mm) | 0.365" (9.27 mm) | 0.500" (12.70 mm) | 1.000" (25.40 mm) | 1.000" (25.40 mm) |
| 12" | 12.750" (323.85 mm) | 0.180" (4.57 mm) | 0.375" (9.52 mm) | 0.500" (12.70 mm) | 1.312" (33.32 mm) | 1.000" (25.40 mm) |
| 14" | 14.000" (355.60 mm) | 0.250" (6.35 mm) | 0.375" (9.52 mm) | 0.500" (12.70 mm) | 1.406" (35.71 mm) | - |
| 16" | 16.000" (406.40 mm) | 0.250" (6.35 mm) | 0.375" (9.52 mm) | 0.500" (12.70 mm) | 1.594" (40.49 mm) | - |
| 18" | 18.000" (457.20 mm) | 0.250" (6.35 mm) | 0.375" (9.52 mm) | 0.500" (12.70 mm) | 1.781" (45.24 mm) | - |
Tolerance Chart of EN 10305-1 E355 Seamless Precision Steel Tubes
| Component Length (mm) | Outer Diameter (OD) 30-100 mm | Outer Diameter (OD) 100-254 mm |
|---|---|---|
| 10-100 | +1.0 / -0 mm | +2.0 / -0 mm |
| 100-600 | +2.0 / -0 mm | +3.0 / -0 mm |
| 600-1200 | +3.0 / -0 mm | +4.0 / -0 mm |
| 1200-5000 | +5.0 / -0 mm | +6.0 / -0 mm |
Applications Usage of EN 10305-1 E355 Seamless Precision Steel Tubes
- Hydraulic Cylinder Tubes
- Pneumatic Systems
- Automotive Components
- Construction and Heavy Machinery
- Mechanical Engineering Equipment
- Industrial Automation Systems
- Agricultural Machinery
- Material Handling Equipment
Frequently Asked Questions
1. What is the DIN 2391 equivalent of EN 10305-1 E355?
The DIN 2391 equivalent of EN 10305-1 E355 is DIN 2391 ST52.3 (NBK). EN 10305-1 replaced the DIN 2391 standard.
2. What is the difference between EN 10305-1 E235 and E355?
E355 has higher strength and is used for demanding hydraulic and mechanical applications, while E235 is better suited for lighter-duty applications.
3. What is EN 10305-1 E355 tube used for?
EN 10305-1 E355 tubes are used in hydraulic cylinders, automotive parts, heavy machinery, mechanical engineering, and precision equipment.
4. Is EN 10305-1 E355 tube corrosion resistant, or does it need surface treatment?
E355 is not naturally corrosion resistant. Surface treatments such as galvanizing, phosphating, or oil coating are recommended for protection against corrosion.
5. What is the difference between EN 10305-1 and EN 10305-4?
EN 10305-1 covers cold-drawn seamless precision steel tubes, while EN 10305-4 specifically covers seamless cold-drawn tubes for hydraulic and pneumatic power systems.
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