Honed Tube ST52 DIN2391 for Telescopic Jack
Specifications
1.honed tube ST52 DIN2391 for telescopic jack2.Top quality
3.Golden supplier
4.OEM Acceptable
5.MOQ:2
honed tube ST52 DIN2391 for telescopic jack
1.Grade:20#,45#,Q345D,STKM13C-T(25Mn)
2.OD:30mm-250mm Hydraulic cylinder Cold Drawn honed tube Best reputation New Supplier
3.Technique:Cold drawn honed tubes
4.Suitable for hydraulic cylinder tubes,honing or skiving and roller burnishing cylinder tubes
Dimensions tolerance
Grade |
OD(mm) |
ID (mm) |
Tolerance |
||||
OD (mm) |
ID (mm) |
Wall thickness deviation (mm) |
Ovality (mm) |
Curvature(mm/m) |
|||
45# |
40-74 |
30-65 |
±.01 |
-0.3,-0.5 |
≤0.5 |
≤0.1 |
0.3 |
74-98 |
65-85 |
±.01 |
-0.4,-0.6 |
≤0.5 |
≤0.15 |
0.3 |
|
100-116 |
85-100 |
±.02 |
-0.4,-0.6 |
≤0.6 |
≤0.15 |
0.3 |
|
124-134 |
110-115 |
±.02 |
-0.6,-0.8 |
≤0.6 |
≤0.20 |
0.3 |
|
140-158 |
120-135 |
±.02 |
-0.7,-0.9 |
≤0.8 |
≤0.20 |
0.3 |
|
165-176 |
140-150 |
±.02 |
-0.7,-0.9 |
≤0.8 |
≤0.20 |
0.3 |
|
188-203 |
160-180 |
±.02 |
-0.7,-0.9 Honed |
≤0.8 |
≤0.20 |
0.3 |
|
Mechanical properties
- Tensile strength:≥600Mpa
- Yield strength :≥520Mpa
- Elongation :>15%
- Hardness :HRB>85
- Supply condition:BKS(+SR)
Delivey conditions:
- Standard packing with plastic caps and strapped bundes.,standard weight approx 1500kg
- Commercial length 2000~10500mm,custom lengths upon request
- Surface protection
Chemical composition of Material:
| Steel grade | Chemical composition,% | |||||
| C | Si | Mn | P | S | Cr | |
| ≤ | ||||||
| 20# | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.25 |
| 16Mn | ≤0.2 | ≤0.5 | 1.00-1.60 | 0.03 | 0/03 | 0.25 |
| ST52(E355) | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 | 0.25 |
| SAE1026 | 0.22-0.28 | 0.15-0.35 | 0.6-0.9 | 0.04 | 0.05 | / |
Mechanical Property of Material:
| Delivery condition |
cold finished(hard)(BK) | Cold drawn and stress-relieved(BK+S) | |||
| Steel grade | Rm MPa | Elongation A5(%) |
Rm MPa | ReH MPa | Elonggation A5(%) |
| 20# | ≥550 | ≥8 | ≥520 | ≥375 | ≥15 |
| 16Mn | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 |
| ST52 | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 |
| SAE1026 | ≥640 | ≥5 | ≥600 | ≥510 | ≥12 |
Main Production Progress:
| Raw material | → | Cold drawn | → | Heat treatment BK+S |
→ | Honed & SRB | → | Packing |
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