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EN10305-1 E235+N NBK SEAMLESS PRECISION TUBE FOR AUTO APPLICATION

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EN10305-1 E235+N NBK SEAMLESS PRECISION TUBE FOR AUTO APPLICATION

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Brand Name :	YUHONG
Model Number :	E235+N,ST37.4,ST52.4
Certification :	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Payment Terms :	L/C, T/T
Delivery Time :	7DAYS

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EN10305-1 E235+N NBK SEAMLESS PRECISION TUBE FOR AUTO APPLICATION

EN10305-1 E235+N NBK SEAMLESS PRECISION TUBE FOR AUTO APPLICATION

Delivery Status: NBK (+N) BKW (+LC) GBK (+A) BKS (+SR) BK (+C) OD x WT = 4~120 x 0.5~15mm

DIN2391 St52.4+N Phosphated Hydraulic Tube

Description:

Precision steel tube

Grade:
St 30 Si / St 30 Al
/ St 35 / St37 / St37.4 / St45 / St 52 / St52.4
/ E215 / E235 / E355

Precision in size,Bright for the surface, high ability of mechanical performance

Standard: DIN 2391, EN10305-1, EN10305-4, BS 6323, ISO 8535

DIN2391 Precision steel pipe

STEEL GRADE: ST30Si, ST30Al, ST35, ST37, ST37.4, ST45, ST52, ST52.4, etc

Size:(mm)

Out Dimensions: 6 mm ~ 350 mm

Wall Thickness: 0.8 mm ~30mm

Length: Fixed(6m,9m,12,24m) or normal length(5-12m)

Final supply conditions:

Cold finished(hard)BK

Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high

resistance to deformation.

Cold finished(soft)BKW

The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further

processing allows a certain degree of cold forming (e.g. bending, expanding)

Cold finished and stress-relieved BKS

Heat treatment is applied following the last cold forming process. Subject to appropriate processing

conditions, the increase in the residual stresses involved enables both forming and machining to a certain

degree.

Annealed GBK The last cold forming process is followed by annealing in a controlled atmosphere.

Normalized NBK

The last cold forming process is followed by annealing above the upper transformation point in a controlled

atmosphere.

Chemical Composition:

Steel grade		Chemical composition, as a percentage by mass
Symbol	Material number	C max.	Si max.	Mn	P max.	S max.
St 30 Si	1.0211	0.10	0.30	<=0.55	0.025	0.025
St 30 Al	1.0212	0.10	0.05	<=0.55	0.025	0.025
St 35	1.0308	0.17	0.35	<=0.40	0.025	0.025
St 45	1.0408	0.21	0.35	<=0.40	0.025	0.025
St 52	1.0580	0.22	0.55	<=1.60	0.025	0.025
The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%.

Steel grade		Chemical Composition(%):
Steel name	Steel number	C max	Si max	Mn	P max	S max	Al min
E215	1.0212	0.10	0.05	0.70	0.025	0.025	0.025
E235	1.0308	0.17	0.35	1.20	0.025	0.025	-
E355	1.0580	0.22	0.55	1.60	0.025	0.025	-

EN10305-1 E235+N NBK SEAMLESS PRECISION TUBE FOR AUTO APPLICATION

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