DIN2391 En10305 St52 C20 E355 H8 Honed Tube for Hydraulic Cylinder

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Varnishing
• Usage: Hydraulic/Automobile Pipe
• Section Shape: Round
• Transport Package: Bundles
• Specification: 60x70, 80x90
• Trademark: ZGL
• Origin: China
• HS Code: 730419100

Product Description

Product Description

Hydraulic Cylinder Honed Tube
Standard: ASTM A519, DIN2391, EN10204-1
Grade: 1020, C45, ST52, ST52.3, 27SiMn, 25Mn
Technology: Cold Drawn, Cold roll, Honed, Skived, Burnished
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/mm^2	Elongation 85%	T.S bN/mm^2	Y.S SN/mm^2	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 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

 

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

 Application