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China Automotive Tubes EN10305-1 E255 NBK

Typical Clients: Volkswageon
Market Type:OE Market
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Material:
Steel

Product Name:China Automotive Tubes EN10305-1 E255 NBK

China Automotive Tubes EN10305-1 E255 NBK

Product Description:

l Automotive Tube diamensions for the automotive industry
Outside diameter ranges from 4 to 60 mm and wall thickness ranges from 0.5 to 7mm. Precision steel tubes are delivered according to and
l TOLERANCE TABLE OF STEEL TUBE

NAME	SCOPE(mm)	GB (mm)	DIN (mm)	Enterprise control(mm)	Special high-precision(mm)
OD Out Diameter	4-30	±0.1	±0.08	±0.05	±0.03
	31-40	±0.15	±0.15	±0.05	±0.03
	41-50	±0.20	±0.20	±0.08	±0.03
	51-60	±0.25	±0.25	±0.08	±0.03
Wall thickness	0.5-7	±10%,Min±0.12	±10%	±10%,Min±0.05	±10%,Min±0.03

Steel grades and chemical composition for EN10305-1 automotive tubes

Chemical composition(cast analysis)a
Steel grade		% by mass
Steel name	Steel number	C	Si	Mn	P	Sb	AI
Steel name	Steel number	max.	max.	max.	max.	max.	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	-
E355C	1.0580	0.22	0.55	1.60	0.025	0.025	-

l Mechanical prorperties for EN10305-1 automotive tubes

Mechanical properties at room temperature
Steel grade		Minimum values for the delivery condition
Steel name	Steel number	BK		BKW		BKS			GBK		NBK
		Rm	A	Rm	A	Rm	ReH	A	Rm	A	Rm	ReH	A
		MPa	%	MPa	%	MPa	MPa	%	MPa	%	MPa	MPa	%
ST35	1.0305	480	6	420	10	420	315	14	315	25	340 to 470	235	25
ST45	1.0408	580	5	520	8	520	375	12	390	21	440 to 570	255	21
ST52	1.0580	640	4	580	7	580	420	10	490	22	490 to 630	355	22

l Delivery condition and heat treatment processing of precision tubes for the automotive industry

Delivery Condition	Heat treatment process
+C	Cold drawn/hard.After the last cold forming,no heat treatment.
+LC	Cold drawn/soft.After the last heat treatment follows the cold drawing there is a light finishing pass.
+SR	Cold drawn and stress relieved annealed. After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere.
+A	After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere.
+N	Normalized. After the last cold drawing process the tubes are annealed in a controlled atmosphere.

l Length of precision tubes for the automotive industry
random length precision tubes in the range of 3 10 m
approximate length with tolerance +/-10 mm

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Supplier Details

Zhangjiagang Shengdingyuan Pipe-making Co.

Market Type: OE Market
Business Type: Manufacturer
Main Product: Hydraulic Steel Tube, High Pressure Injector Tube, Cold Drawn Pecision Seamless Steel Tube, Din2391/ C P