Stainless Alloy Carbon Cold Drawn Seamless Steel Tubes

• Type: Stainless Steel Pipes
• Standard: ASTM
• Grade: 400 Series
• Certification: ASTM
• Shape: Round
• Technique: Cold Rolled
• Model NO.: Stainless Alloy Carbon Cold Drawn Seamless Steel T
• Surface Treatment: Polished
• Transport Package: Full
• Specification: customized
• Trademark: liaocheng
• Origin: Liaocheng
• HS Code: 7214100000
• Production Capacity: 5000pieces One Year

Product Description

1. Description:

The cold rolled seamless  tubes have closer dimensional tolerances, better surface finish and higher mechanical properties than the corresponding grades of hot finished seamless tubes.

2. Application:

High Precision Cold Rolled Seamless Steel Tube is used in automotive industry, and in the occasion where the high accuracy, brightness, cleanness of the tube are required.

3. Main Features:

l Superior surface finish
l High yield strength
l Dimensional accuracy and excellent micro-structure uniformity
l Enhanced machinability
l High strength to weight ratio
l Tight tolerances, resulting in reduced machine time
l Possible spiraling eccentricity inherent in product

4. Quality Standard:

DIN 2391 Seamless precision steel tube
BS EN 10305-1 Seamless cold drawn tubes
BS EN 10305-4 Seamless cold drawn tubes for hydraulic and pneumatic power systems
BS 6323-4 Cold finished seamless steel tube
ASTM A519 Seamless Carbon and alloy steel mechanical tubing
JIS G3441 Alloy Steel Tube for machine purpises
JIS G3445 Carbon steel tube for machine structural purposes

5. Chemical Composition(%):

Grade	C	Si	Mn	P	S	Cr	Mo
St 35 (DIN1.0308)	0.17 max	0.35 max	0.40 min	0.025 max	0.025 max	/	/
St 52 (DIN1.0580)	0.22 max	0.55 max	1.60 max	0.025 max	0.025 max	/	/
CFS 4	0.25 max	0.35 max	1.20 max	0.050 max	0.050 max	/	/
CFS 5	0.23 max	0.50 max	1.50 max	0.050 max	0.050 max	/	/
CFS 10	0.26 max	0.35 max	0.80 max	0.050 max	0.050 max	0.80-1.20	0.15-0.30
1020	0.18-0.25	/	0.30-0.60	0.040 max	0.050 max	/	/
1045	0.43-0.50	/	0.60-0.90	0.040 max	0.050 max	/	/
4130	0.28-0.33	0.15-0.35	0.40-0.60	0.040 max	0.040 max	0.80-1.10	0.15-0.25

6. Delivery Conditions:

+C (BK) Hard. No final treatment after final cold rolling.
+LC (BKW) Soft. Final heat treatment is followed by a suitable drawing pass (limited reduction of area).
+SR (BKS) Stress Relieved. After final cold rolling, the tubes are stress relieved in a controlled atmosphere.
+A (GBK) Annealed. After final cold rolling, the tubes are annealed in a controlled atmosphere.
+N (NBK) Normalized. After final cold rolling, the tubes are normalized in a controlled atmosphere.

7. Mechanical Properties( T=20ºC if not differently stated ):

Grades	Delivery Conditions	Tensile Strength Rm (Mpa)	Yield Strength R2 (Mpa)	Elongation in the longitudinal direction Al (%)
St 35	+C (BK)	480 min	/	6 min
St 35	+LC (BKW)	420 min	/	10 min
St 35	+SR (BKS)	420 min	315 min	14 min
St 35	+A (GBK)	315 min	/	25 min
St 35	+N (NBK)	340-470	235 min	25 min
St 52	+C (BK)	640 min	/	4 min
St 52	+LC (BKW)	580 min	/	7 min
St 52	+SR (BKS)	580 min	420 min	10 min
St 52	+A (GBK)	490 min	/	22 min
St 52	+N (NBK)	490-630	355 min	22 min
E235	+C (BK)	390 min	/	7 min
E235	+A (GBK)	315 min	/	25 min
E235	+N (NBK)	340-480	235 min	25 min
E355	+C (BK)	540 min	/	5 min
E355	+A (GBK)	450 min	/	22 min
E355	+N (NBK)	3490-630	355 min	22 min