Honed Steel Tube
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Honed Steel Tube: Similar name: honing tube, honed bore tube, smooth bore tube, cylinder tube, skived bore tube, grinding tube Standard: ASTM A519, DIN2391 Grade:ST52,ST52.3,CK45,Q345B,EN355,16Mn,STKM13C,SAE1020/1026/4140,42CrMo,TP304/316. |
OD metric size: 30 to 2000 mm
OD imperial size: 1.5" to 50" (inch)
Length: max 20 Meter
Straightness: <0.5 mm/m
Tolerance OD: DIN 2391
Tolerance ID: ISO H8, H9, H10
Roughness (Ra): <0.8
Application: construction machinery, metallurgical machinery, plastic machinery, mining machinery, road construction machinery, hydraulic and pneumatic cylinders
Size:
Chemical Composition:
Mechanical Property:
Size ID Tolerance (mm) :
Size OD Tolerance (mm) :
OD imperial size: 1.5" to 50" (inch)
Length: max 20 Meter
Straightness: <0.5 mm/m
Tolerance OD: DIN 2391
Tolerance ID: ISO H8, H9, H10
Roughness (Ra): <0.8
Application: construction machinery, metallurgical machinery, plastic machinery, mining machinery, road construction machinery, hydraulic and pneumatic cylinders
Size:
| Manufacturing Process | Tube ID | Length | Straightness | Dimensional Accuracy | Tolerance on ID | Inner Bore Roughness |
| honing | Φ40-800mm | ≤13m | 0.2-0.3mm | H8~H9 | ±8% | ≦0.8 um |
Chemical Composition:
| Grade | C | Si | Mn | P | S | Cr | Ni | Cu | V | Al |
| 1020 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≦0.035 | ≦0.035 | ≦0.25 | ≦0.30 | ≦0.25 | - | - |
| C45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≦0.035 | ≦0.035 | ≦0.25 | ≦0.30 | ≦0.25 | - | - |
| 16Mn | 0.13-0.19 | 0.20-0.60 | 1.20-1.60 | ≦0.030 | ≦0.030 | ≦0.030 | ≦0.30 | ≦0.25 | - | - |
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | ≦0.035 | ≦0.035 | ≦ 0.30 | ≦0.30 | ≦0.20 | - | - |
| ST52 | ≦0.20 | ≦0.50 | ≦1.70 | ≦0.035 | ≦0.035 | ≦0.30 | ≦0.50 | ≦0.30 | ≦0.15 | - |
| ST52.3 | ≦0.18 | ≦0.50 | ≦1.70 | ≦0.030 | ≦0.25 | ≦0.30 | ≦0.50 | ≦0.30 | ≦0.15 | ≥0.015 |
Mechanical Property:
| Grade | Cold finished (hard) (BK) | Cold finished (hard) (BK+S) | Hardness | Impact Value (-20°C) J | |||
| T.S bN/mm2 | Elongation 85% | T.S bN/mm2 | Y.S SN/mm2 | Elongation 85% | |||
| 1020 | ≥550 | ≥8 | ≥520 | ≥400 | ≥15 | 170 | -- |
| C45 | ≥680 | ≥5 | ≥630 | ≥520 | ≥12 | 190 | -- |
| 16Mn | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 | 160 | -- |
| 27SiMn | ≥780 | ≥5 | ≥700 | ≥580 | ≥10 | 220 | -- |
| ST52 | ≥660 | ≥8 | ≥620 | ≥520 | ≥15 | 190 | -- |
| ST52.3 | ≥660 | ≥8 | ≥620 | ≥520 | ≥15 | 190 | ≥27 |
Size ID Tolerance (mm) :
| ID size | ID Tolerance | WT Tolerance | ||||
| H7 | H8 | H9 | H10 | H11 | ||
| 30 | +0.0210 | +0.0330 | +0.0520 | +0.0840 | +0.1300 | ±5% |
| >30-50 | +0.0250 | +0.0390 | +0.0620 | +0.1000 | +0.1600 | |
| >50-80 | +0.0300 | +0.0460 | +0.0740 | +0.1200 | +0.1900 | |
| >80-120 | +0.0350 | +0.0540 | +0.0870 | +0.1400 | +0.2200 | |
| >120-180 | +0.0400 | +0.0630 | +0.1000 | +0.1600 | +0.2500 | |
| >180-250 | +0.0460 | +0.072 | +0.1150 | +0.1850 | +0.2900 | |
| >250-315 | +0.0520 | +0.0810 | +0.1300 | +0.2100 | +0.3200 | |
| >315-800 | +0.0570 | +0.0890 | +0.1400 | +0.2300 | +0.3600 | |
Size OD Tolerance (mm) :
| OD | Tolerance | OD | Tolerance |
| ≤Φ40 | ±0.15 | Φ160～200 | ±0.80 |
| Φ40～60 | ±0.25 | Φ200～240 | ±1.00 |
| Φ60～80 | ±0.30 | Φ240～340 | ±1.50 |
| Φ80～100 | ±0.40 | Φ340～440 | ±2.00 |
| Φ100～160 | ±0.50 | Φ440～520 | ±2.50 |