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- The name :
BS6323-8 Longitudinally Welded Stainless Steel Tubes
- Product Description
- Applications: for Auto industry / for machinery use/mechanical and general engineering purposes
Size range: O.D.:6-280mm W.T.:1-30mm L:max12000mm - Model : BS6323-8
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Instruction
BS6323-8 Seamless and Welded steel tubes for automobile,mechanical and general engineering purposesPart
8: Specific requirements for longitudinally welded stainless 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
Steel Grade and Chemical Compositions:
Note: Special steel grade is also available, according to customer request
|
Mechanical properties |
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|
Designation |
BS 1449-2： |
KM (as welded) |
GKM(S),GZF(S)(welded and sized fully softened) |
GBK (S)，and GZF(S)(cold finished ,fully softened) |
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|
Re min. |
Rm min. |
A min. |
Re min. |
Rm min. |
A min. |
Re min. |
Rm min. |
A min. |
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|
N/mm2 |
N/mm2 |
% |
N/mm2 |
N/mm2 |
% |
N/mm2 |
N/mm2 |
% |
||
|
LW 12b |
|
300 |
400 |
10 |
_ |
_ |
_ |
_ |
_ |
_ |
|
LW 19b |
409S19 |
300 |
400 |
10 |
200 |
350 |
20 |
_ |
_ |
_ |
|
LW 20 |
304S11 |
420 |
520 |
25 |
185 |
480 |
30 |
_ |
_ |
_ |
|
LWCF 20 |
|
|
|
|
|
|
|
185 |
480 |
30 |
|
LW 21 |
304S15 |
450 |
560 |
25 |
210 |
510 |
30 |
_ |
_ |
_ |
|
LWCF 21 |
|
|
|
|
|
|
|
210 |
510 |
30 |
|
LW 22 |
316S13 |
420 |
520 |
25 |
185 |
480 |
30 |
_ |
_ |
_ |
|
LWCF 22 |
|
|
|
|
|
|
|
185 |
480 |
30 |
|
LW 23 |
316S33 |
450 |
560 |
25 |
210 |
510 |
30 |
_ |
_ |
_ |
|
LWCF 23 |
|
|
|
|
|
|
|
210 |
510 |
30 |
|
LW 24 |
321S31 |
450 |
560 |
25 |
210 |
510 |
30 |
_ |
_ |
_ |
|
LWCF 24 |
|
|
|
|
|
|
|
210 |
510 |
30 |
|
Tolerance on specified cut lengths |
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|
Specified cut length |
Tolerance |
||
|
over |
up to and including |
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|
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. |
|||
Tolerance on diameter of as-welded and sized tube |
||
|
Outside diameter |
Tolerance |
|
|
over |
Up to and including |
|
|
mm |
mm |
mm |
|
|
30 |
±0.15 |
|
30 |
50 |
±0.18 |
|
50 |
70 |
±0.25 |
|
70 |
90 |
±0.35 |
|
Tolerance on diameter of fully softened tube |
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|
Diameter to thickness ratioD/a |
Tolerance |
|
|
over |
up to and including |
|
|
|
mm |
|
|
_ |
40 |
1.5 times value in Table 2 |
|
40 |
60 |
Twice the value in Table 2 |
|
60 |
_ |
2.5 times value in Table 2 |
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