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Unhoned Tube for hydraulic cylinder
1. Size range: 40mm*30mm-325mm*300mm
2. Manufacture method: cold rolled, cold drawn
3. Available steel grade:
| EN 10305-1: | E355,C45E,E470,20MnV6,S355,S355JR,S355J0,S355J2H |
| DIN 2391-2: | ST52,ST52.3,ST52.4 |
| ASTM A519: | 1020,1026,1045,1518,1524 |
| JIS G3445: | STKM 13C, S45C |
| GB/T 3639: | 20#,45#,Q345B,Q345D,Q345E, 25Mn,16Mn,27SiMn |
4. Delivery condition:
| +C | +LC | +SR | +A | +N |
| BK | BKW | BKS | GBK | NBK |
| Cold rolled | Cold drawn | Stress relieved | Annealed | Normalized |
5. OD tolerance: as per DIN 2391-2 or EN 10305-1
6. ID tolerance: as per request. We suggest -0.3mm/-0.6mm for honing, -0.5mm/-0.9mm for skiving&roller burnishing.
7. Wall thickness tolerance: +/-6% max
8. Straightness: 1.2mm/1000mm max
9. Chemical Composition:
|
| C | Si | Mn | P | S | V |
| ST52/E355: | ≤ 0.22 | ≤ 0.55 | ≤ 1.60 | ≤ 0.025 | ≤ 0.025 | ∕ |
| E470/20MnV6: | 0.16-0.22 | 0.10-0.50 | 1.30-1.70 | ≤ 0.025 | 0.015-0.035 | 0.08-0.15 |
| SAE 1026/STKM 13C: | 0.22-0.28 | ≤ 0.35 | 0.60-0.90 | ≤ 0.025 | ≤ 0.025 | ∕ |
| SAE 1045/C45E | 0.43-0.50 | ≤ 0.35 | 0.60-0.90 | ≤ 0.025 | ≤ 0.025 | ∕ |
10. Mechanical Properties:
| Tensile Strength: | ≥ 580 Mpa |
| Yield Strength: | ≥ 450 Mpa |
| Elongation: | ≥ 10% |
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