Introduction
1020 Honed Tube features high precision and good surface finish and can be used in hydraulic and pneumatic cylinder applications, shock absorbers, accumulators, motor housings, pump barrels, and any other application that requires precision machined tubes.
Chemical composition
Steel grade | C | Si | Mn | P | S | Cr | Ni | Cu | V | AI |
20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | W 0.035 | W0.035 | W0.25 | W0.30 | W0.25 | / | / |
45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | W 0.035 | W 0.035 | W0.25 | W0.30 | W0.25 | / | / |
Q345B | W0.20 | W0.50 | W1.70 | W0.035 | W 0.035 | W0.30 | W0.50 | W0.30 | W0.15 | / |
Q345D | W0.18 | W0.50 | W1.70 | W0.030 | W 0.025 | W0.30 | W0.50 | W0.30 | W0.15 | N0.015 |
27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | W 0.035 | W 0.035 | W0.30 | W0.30 | W0.20 | / | / |
25Mn | 0.22-0.29 | 0.17-0.37 | 0.70-1.0 | W 0.035 | W 0.035 | W0.25 | W0.30 | W0.25 | / | / |
E355 | W0.22 | W0.55 | W1.60 | S 0.025 | W 0.025 | / | / | / | / | N0.02 |
E470 | 0.16-0.22 | 0.10-0.50 | 1.30-1.70 | W 0.030 | W 0.035 | / | / | / | 0.08-0.15 | / |
ID (mm) | Tolerance on ID pm | |||
H7 | H8 | H9 | H10 | |
30 | +21 | +33 | +52 | +84 |
0 | 0 | 0 | 0 | |
>30-50 | +25 0 | +39 0 | +62 0 | +100 0 |
>50-80 | +30 0 | +46 0 | +74 0 | +120 0 |
>80-120 | +35 0 | +54 0 | +87 0 | +140 0 |
>120-180 | +40 0 | +63 0 | +100 0 | +160 0 |
>180-250 | +46 0 | +72 0 | +115 0 | +185 0 |
>250-315 | +52 0 | +81 0 | +140 0 | +210 0 |
>315-400 | +57 0 | +89 0 | +170 0 | +230 0 |
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