Precision CDS tube

Detailed Product Description

Processing	Cylinder diameter/mm	Length	Straightness	Size accuracy	Wall thickness/mm	Inner bore
						roughness
Cold-drawn	48~325	≤12m	0.3~0.8mm/m		±10%	0.8~1.6um
Honed tube	48~325	≤10m	0.3~0.8mm/m	H8~H9	±10%	0.3~0.8um
Mechanical Property
Material	Tensile	Yield	Elongation	Hardness
	strength	strength
Ck20	530 N/mm2	505σsN/mm2	12δs%	175HB
Ck45	660 N/mm2	630σsN/ mm2	6δs%	207HB
St52	595 N/mm2	570σsN/ mm2	9δs%	190HB
27SiMn	840 N/mm2	805σsN/ mm2	7.5δs%	230HB
Honed tube size tolerance
ID size	ID deviation (mm)
	H7	H8	H9	H10
30	+0.021	+0.033	+0.052	+0.084
	0	0	0	0
>30~50	+0.025	+0.039	+0.062	+0.100
	0	0	0	0
>50~80	+0.030	+0.046	+0.074	+0.120
	0	0	0	0
>80~120	+0.035	+0.054	+0.087	+0.140
	0	0	0	0
>120~180	+0.04	+0.063	+0.100	+0.160
	0	0	0	0
>180~250	+0.046	+0.072	+0.115	+0.185
	0	0	0	0
>250~315	+0.052	+0.081	+0.130	+0.210
	0	0	0	0
>315~400	+0.0527	+0.089	+0.140	+0.230
	0	0	0	0