Active Member
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Address: Daqiao Developing Zone Haiyan,Zhejiang Province,China
Phone: 86-574-88086983
Contact name:Mr. Richard
Torich International Co.,Ltd |
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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) |
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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 | ||||||
