Tuburi de oțel de precizie fără sudură
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Numele :
BS6323-4 Cold Finished Seamless Steel Tubes
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- Standard: BS6323-4 Seamless and Welded Steel Tubes for Automobile,Mechanical and General EngineeringPpurposes
Part 4: Specific requirements for cold finished seamless steel tubes
Gama de dimensiuni: OD: 6-350mm WT: 1-30mm L:max12000mm - Model: BS6323-4
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anterioară: BS6323-3 Hot Hinished Seamless Steel Pipes
următor: BS6323-5 Tuburi de oțel sudate cu rezistență electrică
instrucție
Standard: BS6323-4 Tuburi din oțel fără sudură și sudate pentru automobile, în scopuri mecanice și de inginerie generală
Part 4: Specific requirements for cold finished seamless steel tubes"
Aplicații: pentru industria auto / pentru utilizarea mașinilor / în scopuri mecanice și de inginerie generală
Gama de dimensiuni: OD: 6-280mm WT: 1-30mm L:max12000mm
|
Amenajări |
Chemical Compositions( ladel analysis) |
|
|
|
|||
|
C |
Si |
Mn |
Pmax. |
Smax. |
Cr |
Mo |
|
|
|
% |
% |
% |
% |
% |
% |
% |
|
CFS 3 |
0.20 max. |
0.35 max. |
0.90 max. |
0.050 |
0.050 |
__ |
__ |
|
CFS 3Aa |
0.20 max. |
0.10 la 0.35 |
0.60 la 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 la 0.40 |
0.35 max. |
0.50 la 0.90 |
0.050 |
0.050 |
__ |
__ |
|
CFS 7 |
0.20 la 0.30 |
0.35 max. |
1.20 la 1.50 |
0.050 |
0.050 |
__ |
__ |
|
CFS 8d |
0.40 la 0.55 |
0.35 max. |
0.50 la 0.90 |
0.050 |
0.050 |
__ |
__ |
|
CFS 9 |
0.29 max. |
0.35 max. |
1.50 max. |
0.050 |
0.050 |
__ |
0.15 la 0.25 |
|
CFS 10 |
0.26 max. |
0.35 max. |
0.80 max. |
0.050 |
0.050 |
0.80 la 1.20 |
0.15 la 0.30 |
|
CFS 11 |
0.45 max. |
0.35 max. |
1.00 max. |
0.050 |
0.050 |
0.80 la 1.20 |
0.15 la 0.30 |
|
proiecta naţiune |
BKc (cold finished/hard) |
BKWc(cold finished/soft ) |
GBK and GZF(annealed) |
NBK and NZF(normalized) |
||||||||
|
Remin. |
Rmmin. |
Amină. |
Remin. |
Rmmin. |
Amină. |
Remin. |
Rmmin |
Amină. |
Remin. |
Rmmin. |
Amină. |
|
|
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。
aGrade 3A shall be suitable for case hardening purposes.
bGrain refining elements may be added at the option of the manufacturer .
cIf 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.
dSteel 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."
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