CITON HYDRAULIC
Steel tubes for hydraulic cylinder production.
Technical Specifications
Steel tubes for hydraulic cylinder production.
Product suitability, material grade, dimensions and delivery requirements should be confirmed against your drawing or specification.
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Technical Specifications
Technical values use the user-confirmed 20#/45# values and original source data for 27SiMn/Q355E.
| Steel Grade | C | Si | Mn | P | S | Cr | Ni | Cu | V | Al |
|---|---|---|---|---|---|---|---|---|---|---|
| E355 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | ≤0.25 | / | / |
| 20# | ≤0.20% | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | ≤0.25 | / | / |
| 45# | 0.42-0.50 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.50 | ≤0.30 | / | / |
| Q355B | ≤0.18 | ≤0.50 | ≤1.70 | ≤0.030 | ≤0.025 | ≤0.30 | ≤0.50 | ≤0.30 | ≤0.15 | ≥0.015 |
| Q355D | 0.12-0.18 | 0.2-0.5 | 1.2-1.7 | ≤0.025 | ≤0.025 | ≤0.30 | ≤0.50 | ≤0.20 | 0.04-0.15 | ≥0.02 |
| Q355E | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.30 | ≤0.20 | / | / |
| 25Mn | 0.22-0.29 | 0.17-0.37 | 0.7-1.0 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | ≤0.25 | / | / |
| 27SiMn | ≤0.22 | ≤0.55 | ≤1.60 | ≤0.025 | ≤0.025 | / | / | / | / | ≥0.02 |
| 1026 | 0.22-0.28 | ≤0.3 | 0.6-0.9 | ≤0.035 | ≤0.025 | ≤0.20 | ≤0.30 | ≤0.35 | / | / |
| E470 | 0.16-0.22 | 0.10-0.50 | 1.30-1.70 | ≤0.030 | ≤0.035 | / | / | / | 0.08-0.15 | / |
| P460 | ≤0.2 | ≤0.6 | 1.0-1.7 | ≤0.025 | ≤0.015 | ≤0.30 | ≤0.80 | ≤0.70 | ≤0.20 | ≥0.02 |
| P620 | ≤0.2 | ≤0.6 | 1.0-1.7 | ≤0.025 | ≤0.015 | ≤0.30 | ≤0.80 | ≤0.30 | ≤0.20 | ≥0.02 |
| Working Method | Tube ID (mm) | Length (m) | Straightness (mm/m) | Tolerance on ID | Tolerance on WT | ID Roughness (μm) |
|---|---|---|---|---|---|---|
| Cold Drawing | 40–400 | ≤12 | 0.2–0.5 | — | ±5% | ≤1.6 |
| Cold Rolling | 40–150 | ≤12 | 0.2–0.5 | — | ±5% | ≤0.8 |
| Cold Drawing + Honing | 40–400 | ≤8 | 0.2–0.3 | H8–H9 | ±5% | ≤0.4 |
| Cold Drawing + Rolling | 50–300 | ≤8 | 0.2–0.3 | H8–H9 | ±5% | ≤0.2 |
| Deep Hole Boring + Honing | 250–400 | ≤8 | 0.2–0.3 | H8–H9 | ±5% | ≤0.8 |
| Deep Hole Boring + Rolling | 250–400 | ≤8 | 0.2–0.3 | H8–H9 | ±5% | ≤0.4 |
| Steel Grade | BK Tensile Strength (N/mm²) | BK Elongation δ5 (%) | BK+S Tensile Strength (N/mm²) | BK+S Yield Strength (N/mm²) | BK+S Elongation δ5 (%) | BK+S Hardness (HB) | BK+S Impact Value (-20°C, J) |
|---|---|---|---|---|---|---|---|
| E355/ST52 | ≥700 | ≥5 | ≥650 | ≥580 | ≥15 | 195 | ≥27 |
| 20# | ≥550 | ≥8 | ≥520 | ≥400 | ≥15 | 170 | / |
| 45# | ≥680 | ≥5 | ≥630 | ≥520 | ≥12 | 190 | / |
| Q355B | ≥660 | ≥8 | ≥620 | ≥520 | ≥15 | 190 | / |
| Q355D | ≥660 | ≥8 | ≥620 | ≥520 | ≥15 | 190 | ≥27 |
| Q355E | ≥660 | ≥8 | ≥620 | ≥520 | ≥15 | ≥190 | ≥27 |
| 25Mn | ≥640 | ≥5 | ≥620 | ≥510 | ≥15 | 190 | / |
| 27SiMn | ≥780 | ≥8 | ≥700 | ≥580 | ≥10 | 220 | / |
| 1026 | ≥640 | ≥8 | ≥620 | ≥510 | ≥15 | ≥190 | / |
| E470 | / | / | ≥710 | ≥590 | ≥15 | / | / |
| P460 | / | / | ≥710 | ≥590 | ≥15 | ≥190 | ≥27 |
| P620 | / | / | ≥730 | ≥630 | ≥15 | ≥220 | ≥27 |
Product features
Applications
Typical application suitability depends on the final design, operating conditions, material grade and customer specification.
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