Active Member
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[China]
Address: Daqiao Developing Zone Haiyan,Zhejiang Province,China
Contact name:Richard
Torich International Limited |
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Standard: BS6323-6 Seamless and Welded steel tubes for automobile,mechanical and general engineering purposes
Part 6: Specific requirements for cold finished electric resistance welded(including induction welded) steel tubes
Applications: for Auto industry / for machinery use/mechanical and general engineering purposes Size range: O.D.:6-350mm W.T.:1-35mm L:max12000mm
Chemical Compositions and mechanical properties | |||||||||||||||||
Design | Chemical Compositions( ladle analysis) | mechanical properties | |||||||||||||||
C | Si | Mn | P | S | BKc | BKWc (cold finished/soft ) | GBK and GZF (annealed) | NBK and NZF (normalized) | |||||||||
| max. | max. | max. | max. | max. | Re min. | Rm | A | Re min. | Rm | A | Re | Rm | A min. | Re | Rm | A |
| % | % | % | % | % | N/m | N/m | % | N/m | N/m | % | N/m | N/m | % | N/m | N/m | % |
CEW1a | 0.13 | __ | 0.60 | 0.050 | 0.050 | 320 | 400 | 6 | 245 | 350 | 10 | 150 | 270 | 27 | 155 | 280 | 25 |
CEW2a | 0.16 | __ | 0.70 | 0.050 | 0.050 | 355 | 420 | 6 | 260 | 370 | 10 | 160 | 300 | 27 | 195 | 320 | 25 |
CEW3a | 0.20 | 0.35 | 0.90 | 0.050 | 0.050 | 360 | 450 | 6 | 280 | 400 | 9 | 170 | 340 | 26 | 215 | 360 | 24 |
CEW4b | 0.25 | 0.35 | 1.20 | 0.050 | 0.050 | 415 | 520 | 5 | 315 | 450 | 8 | 200 | 400 | 24 | 235 | 410 | 22 |
CEW5b | 0.23 | 0.50 | 1.50 | 0.050 | 0.050 | 480 | 600 | 4 | 385 | 550 | 6 | __ | __ | __ | 340 | 490 | 20 |
Tolerance on diameter | ||
diameter | Tolerance | |
over | Up to and including | |
mm | mm | mm |
| 30 | ±0.10 |
30 | 50 | ±0.15 |
50 | 70 | ±0.20 |
70 | 90 | ±0.25 |
90 | 110 | ±0.30 |
110 | 130 | ±0.35 |
130 | 160 | ±0.45 |
160 | 190 | ±0.55 |
190 | 220 | ±0.65 |
220 | 250 | ±0.75 |
Tolerance on specified cut lengths | |||
Specified cut length | Tolerance | ||
over | up to and including | ||
mm | mm | mm | |
| 500 | + | 2 |
- | 0 | ||
500 | 2000 | + | 3 |
- | 0 | ||
2000 | 5000 | + | 5 |
- | 0 | ||
5000 | 7000 | + | 10 |
- | 0 | ||
7000 | __ | by agreement | |
| NOTE Closer tolerances may be obtained by agreement between the purchaser and manufacturer. | |||
Distance between platens for flattening test | |
Designation | Distance between platens |
| % |
CEW 1 | 66 |
CEW 2 | 75 |
CEW 3 | 85 |
CEW 4 | 85 |
CEW 5 | 85 |
Minimun expansion for drift expanding test | ||
Designation | Expansion minimun for tube thickness | |
Up to and including 4mm | Over 4 mm up to and including 8 mm | |
| % | % |
CEW 1 | 12 | 8 |
CEW 2 | 12 | 8 |
CEW 3 | 10 | 6 |
CEW 4 | 8 | 5 |
CEW 5 | 8 | 5 |
Note: Special steel grade is also available, according to customer
request.
For Application of:
