EN10305-1 E355 BK Seamless Steel Tubes 640 MPa Tensile Strength for Precision Hydraulic Systems
Price:
Negotiable
MOQ:
5TONs
Delivery Time:
30DAYS
Brand:
Joyruns
Product Description
EN 10305-1 E355+BK Precision Seamless Steel Tubes
Seamless cold-drawn or cold-rolled steel tubes manufactured to EN 10305-1 standards for precision applications requiring high dimensional accuracy, surface quality, and mechanical properties.
Key Applications
- Machine tools industry and construction machinery
- Shipbuilding industry hydraulic systems
- Automotive steel tubing and precision machinery parts
- Cylinders and hydraulic components
- Applications demanding high precision, brightness, cleanliness, and superior mechanical properties
Manufacturing Process & Surface Treatment
Bright heat treatment without oxidation (NBK status), non-destructive testing, thorough cleaning, phosphating treatment, and anti-rust oil dipping for enhanced corrosion resistance.
Chemical Composition (Cast Analysis)
| Steel Name | Steel Number | C | Si | Mn | P | S | Al |
|---|---|---|---|---|---|---|---|
| E215 | 1.0212 | 0.10 max | 0.05 max | 0.70 max | 0.03 max | 0.03 max | 0.025 min |
| E235 | 1.0308 | 0.17 max | 0.35 max | 1.20 max | 0.03 max | 0.03 max | - |
| E355 | 1.0580 | 0.22 max | 0.55 max | 1.60 max | 0.03 max | 0.03 max | - |
Mechanical Properties at Room Temperature
| Steel Grade | Steel Number | Delivery Condition | Rm (MPa) | ReH (MPa) | A (%) |
|---|---|---|---|---|---|
| E215 | 1.0212 | +C | 430 | - | 8 |
| E215 | 1.0212 | +LC | 380 | - | 12 |
| E215 | 1.0212 | +SR | 380 | 280 | 16 |
| E355 | 1.0580 | +C | 640 | - | 4 |
| E355 | 1.0580 | +LC | 580 | - | 7 |
| E355 | 1.0580 | +SR | 580 | 450 | 10 |
Available Delivery Conditions
| Code | Condition | Description |
|---|---|---|
| BK (+C) | Cold Rolled | Standard cold working condition |
| BKW (+LC) | Cold Drawn | Cold drawing process |
| BKS (+SR) | Stress Relieved | Stress relief heat treatment |
| GBK (+A) | Annealed | Full annealing process |
| NBK (+N) | Normalized | Normalizing heat treatment |
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Company
Changzhou Joyruns Steel Tube CO.,LTD
Location
No.143 Qingyang North road,Tianning district. Changzhou
Contact Person
Lee