Hydraulic Honed Cylinder Tubes

		MATERIAL SPECIFICATION						TST-001-R0
		TITLE:	CYLINDER TUBE CDSST52 or EQUIVALENT					PAGE NO: 1 OF 1
								DATE: 25.01.2009
	1. MATERIAL SPECIFICATION AND REF. DOCUMENT
		ST52,BK+S,DIN2391 OR Equivalent
	2. CHEMICAL COMPOSITION (%)
		C (Max)	Mn(Max)	Si(Max)	S(Max)	P(Max)
		0.22	1.6	0.5	0.035	0.035
	3. MECHANICAL PROPERTIES
		UTS (Min.)		Y.S (Min.)		%EL5.65√A(Min)
		600 N/MM2		520 N/MM2		≥15
	4. SUPPLY CONDITION
		Cold drawn seamless steel tube,stress relieved and honed or skived roller burnished
	5. SURFACE ROUGHNESS
		Ra =0.2 ~ 0.4 Micron
	6. TOLERANCES ON INNER DIA
		ISO H8
	7.TOLERANCES ON WALL THICKNESS
		≤ Dia120  +/-5 % of wall thickness
		≥ Dia120  +/-10 % of wall thickness
	8. STRAIGHTNESS
		≤1 mm/M
	9. OD TOLERANCE
		≤ Dia 40 +/-0.2 mm
		≥ Dia 40 ≤ Dia 100 +/-0.3mm
		≥ Dia 100 +/-0.5mm
	10. LENGTH AND CUT TOLERANCE
		Length ≤ 500mm , +2mm
		> 500mm ≤ 2000mm, +3mm
		> 2000mm ≤ 5000mm, +5mm
		> 2000mm ≤ 7000mm, +10mm
	11. TUBE ENDS
		Tube ends shall be cut nominally square to the axis and free from burs
	12. APPEARANCE
		Tube shall have a smooth internal and external surface consistent with cold working
		process,tube inner surface should be free from rust,scratches and other surface
		irregularities.
	13. CERTIFICATION
		Material certifivates as per EN 10204/3.1B
	14. PACKING
		Anti rust oil to be applied on material and both ends closed by plastic cap and
		bundled by steel strips.
	15. SCOPE
		Hydraulic cylinder tube for swivel crane,injection machine and construction
		machine application.

		MATERIAL SPECIFICATION						TST-002-R0
		TITLE:	CYLINDER TUBE  CK20					PAGE NO: 1 OF 1
								DATE: 25.01.2009
	1. MATERIAL SPECIFICATION AND REF. DOCUMENT
		DIN2391 CDS GR.20,BK+S
	2. CHEMICAL COMPOSITION (%)
		C (Max)	Mn(Max)	Si(Max)	S(Max)	P(Max)
		0.22	0.7	0.5	0.035	0.035
	3. MECHANICAL PROPERTIES
		UTS (Min.)		Y.S (Min.)		%EL5.65√A(Min)
		580 N/MM2		480 N/MM2		≥13
	4. SUPPLY CONDITION
		Cold drawn seamless steel tube,stress relieved and honed or skived roller burnished
	5. SURFACE ROUGHNESS
		Ra =0.2 ~ 0.4 Micron
	6. TOLERANCES ON INNER DIA
		ISO H8
	7.TOLERANCES ON WALL THICKNESS
		≤ Dia120  ±5 % of wall thickness
		≥ Dia120  ±10 % of wall thickness
	8. STRAIGHTNESS
		≤1 mm/M
	9. OD TOLERANCE
		≤ Dia 40 ±0.2 mm
		≥ Dia 40 ≤ Dia 100 ±0.3mm
		≥ Dia 100 ±0.5mm
	10. LENGTH AND CUT TOLERANCE
		Length ≤ 500mm , +2mm
		> 500mm ≤ 2000mm, +3mm
		> 2000mm ≤ 5000mm, +5mm
		> 2000mm ≤ 7000mm, +10mm
	11. TUBE ENDS
		Tube ends shall be cut nominally square to the axis and free from burs
	12. APPEARANCE
		Tube shall have a smooth internal and external surface consistent with cold working
		process,tube inner surface should be free from rust,scratches and other surface
		irregularities.
	13. CERTIFICATION
		Material certifivates as per EN 10204/3.1B
	14. PACKING
		Anti rust oil to be applied on material and both ends closed by plastic cap and
		bundled by steel strips.
	15. SCOPE
		Hydraulic cylinder tube for swivel crane,injection machine and construction
		machine application.