TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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1. Details:
| Standard Parameters | |
| Steel Grade | C45E (EN 10083) |
| Tolerance | ISO f7 |
| Roundness | diameter tolerance / 2 |
| Standard Length | - for Ø ≤ 60 mm: 5600 – 6200 mm - for Ø ≥ 60 mm: 5800 – 7200mm Upon request: special lengths on all diameters |
| Surface Roughness | Ra max. 0.20 µm (statistic average: 0.05 – 0.15 µm) |
| Chrome Layer Thickness | ≤ Ø20 mm: min. 15 µm ≥ Ø20 mm: min. 20 µm |
| Chrome Layer Hardness | min. 900 HV(0.1) |
| Straightness | ≤ Ø16 mm: max. 0.3 mm : 1000 mm > Ø16 mm: max. 0.2 mm : 1000 mm |
| Mechanical Properties | according to EN 10083-2 |
2. Chemical Composition
| Material | C% | Mn% | Si% | S% | P% | V% | Cr% |
| Ck45 | 0.42-0.50 | 0.50-0.80 | 0.04 | 0.035 | 0.035 | ||
| ST52 | 0.22 | 1.6 | 0.55 | 0.035 | 0.04 | ||
| 20MnV6 | 0.16-0.22 | 1.30-1.70 | 0.10-0.50 | 0.035 | 0.035 | 0.10-0.20 | |
| 42CrMo4 | 0.38-0.45 | 0.60-0.90 | 0.15-0.40 | 0.03 | 0.03 | 0.90-1.20 | |
| 40Cr | 0.37-0.45 | 0.50-0.80 | 0.17-0.37 | 0.80-1.10 | |||
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3. Mechanical Properties
| Material | T.S N/MM2 | Y.S N/MM2 | E%(MIN) | CHARPY | CONDITION |
| CK45 | 610 | 355 | 15 | >41J | NORMALIZE |
| CK45 | 800 | 630 | 20 | >41J | Q + T |
| ST52 | 500 | 355 | 22 | NORMALIZE | |
| 20MnV6 | 750 | 590 | 12 | >40J | NORMALIZE |
| 42CrMo4 | 980 | 850 | 14 | >47J | Q + T |
| 40Cr | 1000 | 800 | 10 | Q + T |
4. Application:
Piston rods used in hydraulic cylinder, shock absober.
5. Packing:
1. Coated by antirust oil.
2. Sheathed by paper carton tube, both end covered by roundness paper carton.
3. Cotton rope twined and bundled without interspace, to avoid any surfaced scratched.
4. Plastic film covered overall of bundled bars, to keep seal.
5. (Options) Woven tarpaulin covered overall of bundled bars, to keep packing clear.
6. Lifting belts on the middle of bundled bars.
7. (Options) Wooden box packed.
