Spiral steel pipe itself has no life limit, and the service life is mainly related to the operating environment and production process. Spiral steel pipe operating environment is relatively poor In order to extend the service life, the oute.
27SiMn Hydraulic Alloy Pipe
Size:60.3mm-1016mm*8.5mm-80mm
Grade:20#,35#,45#,27SiMn,30CrMnSiA,30MnNbRe and other grades
Operative Standard:GB/T17396-1998 and other technical standard to the buyer’s need.
|
Name |
Chemical composition (%) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Nb |
RE |
|
|
≤ |
||||||||||
|
20 |
0.17~0.24 |
0.17~0.37 |
O.35~0.65 |
0.035 |
0.035 |
0.25 |
O.25 |
0.20 |
|
|
|
35 |
0.32~0.40 |
O.17~O.37 |
O.50~O.80 |
O.035 |
O.035 |
O.25 |
O.25 |
O.20 |
|
|
|
45 |
0.42~0.50 |
O.17~O.37 |
O.50~O.80 |
O.035 |
0.035 |
0.25 |
O.25 |
0.20 |
|
|
|
27SiMn |
O.24~O.32 |
1.10~1.40 |
1.10~1.40 |
0.035 |
0.035 |
0.030 |
0.030 |
0.030 |
|
|
|
30MnNBRE |
0.27~O.36 |
O.20~0.60 |
1.20~1.60 |
0.035 |
0.035 |
0.030 |
0.030 |
0.030 |
0.020~0.050 |
0.02~O.04 |
Mechanical Property
|
Name |
Sample thermal treatment |
Tensile strength ób/MPa |
yield point ó s/MPa |
tensile stretch δ 5(%) |
reduction of area (%) |
Akv Aku2/J |
HBS≤ |
|
≥ |
|||||||
|
20 |
|
400 |
245 |
20 |
|
|
|
|
35 |
51O |
305 |
17 |
|
|
|
|
|
45 |
590 |
335 |
14 |
|
|
|
|
|
27SiNn |
(920±20)°Cquench (450±50)°Ctemper refrigerant:oil and water |
980 |
835 |
12 |
40 |
39 |
217 |
|
30MnNbRE |
(880±20)°Cquench (450±50)°Ctemper refrigerant:AC |
850 |
720 |
13 |
45 |
48 |
|
3 Comments
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