Cold Finished BS6323-4 Seamless Steel Tubes for Mechanical Industry
Brand Name:Torich
Certification:ISO9001，ISO14001,TS16949
Model Number:BS6323-4
Minimum Order Quantity:5 tons
Delivery Time:30-60 days
Payment Terms:T/T,L/C
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Daqiao Developing Zone Haiyan,Zhejiang Province,China
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Standard: BS6323-4 Seamless and Welded steel tubes for automobile,mechanical and general engineering purposes
Part 4: Specific requirements for cold finished seamless steel tubes"
Applications: for Auto industry / for machinery use/mechanical and general engineering
purposes Size range: O.D.:6-280mm W.T.:1-30mm L:max12000mm
Design | Chemical Compositions( ladel analysis) | ||||||
C | Si | Mn | Pmax. | Smax. | Cr | Mo | |
% | % | % | % | % | % | % | |
CFS 3 | 0.20 max. | 0.35 max. | 0.90max. | 0.050 | 0.050 | __ | __ |
CFS 3Aa | 0.20 max. | 0.10 to 0.35 | 0.60 to 1.00 | 0.050 | 0.050 | __ | __ |
CFS 4 | 0.25 max. | 0.35 max. | 1.20 max. | 0.050 | 0.050 | __ | __ |
CFS 5b | 0.23 max. | 0.50 max. | 1.50 max. | 0.050 | 0.050 | __ | __ |
CFS 6 | 0.30 to0.40 | 0.35 max. | 0.50 to 0.90 | 0.050 | 0.050 | __ | __ |
CFS 7 | 0.20 to 0.30 | 0.35 max. | 1.20 to1.50 | 0.050 | 0.050 | __ | __ |
CFS 8d | 0.40 to 0.55 | 0.35 max. | 0.50 to0.90 | 0.050 | 0.050 | __ | __ |
CFS 9 | 0.29max. | 0.35 max. | 1.50max. | 0.050 | 0.050 | __ | 0.15 to0.25 |
CFS 10 | 0.26max. | 0.35 max. | 0.80max. | 0.050 | 0.050 | 0.80 to1.20 | 0.15 to0.30 |
CFS 11 | 0.45max. | 0.35 max. | 1.00 max. | 0.050 | 0.050 | 0.80 to1.20 | 0.15 to0.30 |
Desig nation | BKc (cold finished/hard) | BKWc(cold finished/soft ) | GBK and GZF(annealed) | NBK and NZF(normalized) | ||||||||
Remin. | Rmmin. | Amin. | Remin. | Rmmin. | Amin. | Remin. | Rmmin | Amin. | Remin. | Rmmin. | Amin. | |
N/mm2 | N/mm2 | % | N/mm2 | N/mm2 | % | N/mm2 | N/mm2 | % | N/mm2 | N/mm2 | % | |
CFS3 | 360 | 450 | 6 | 280 | 400 | 9 | 170 | 340 | 26 | 215 | 360 | 24 |
CFS3Aa | 360 | 450 | 6 | 280 | 400 | 9 | 170 | 340 | 26 | 215 | 360 | 24 |
CFS4 | 415 | 520 | 5 | 315 | 450 | 8 | 200 | 400 | 24 | 235 | 410 | 22 |
CFS5b | 480 | 600 | 4 | 385 | 550 | 6 | __ | __ | __ | 340 | 490 | 20 |
CFS6 | 470 | 590 | 5 | 350 | 540 | 7 | 300 | 440 | 22 | 280 | 460 | 21 |
CFS7 | 560 | 700 | 4 | 460 | 650 | 7 | __ | __ | __ | __ | __ | __ |
CFS8d | 575 | 720 | 4 | 470 | 670 | 6 | 300 | 510 | 20 | 340 | 540 | 18 |
CFS9 | 575 | 720 | 4 | 470 | 670 | 6 | __ | __ | __ | __ | __ | __ |
CFS10 | 575 | 720 | 4 | 470 | 670 | 6 | __ | __ | __ | __ | __ | __ |
CFS11 | 575 | 720 | 4 | __ | 670 | 6 | __ | __ | __ | __ | __ | __ |
"NOTE Welding of tubes of grades 3,3A and 5 does not require special techniques but care should be taken and welding carried out in accordance with guidance given in the appropriate British Standard for welding,
e.g. BS 5135.The welding of other grades shown may require special
techniques.
a Grade 3A shall be suitable for case hardening purposes.
b Grain refining elements may be added at the option of the
manufacturer .
c If tubes in the BK and GKW condition are subsequently
welded,brazed or heated the mechanical properties in the heat
affected zone may be reduced to those given for the delivery
condition GBK or NBK.
d Steel within the limits shown,but in accordance with the chemical
composition of BS 970-1,may be supplied if agreed ate the time of
order or enquiry."
Cold Finished BS6323-4 Seamless Steel Tubes for Mechanical Industry
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