Class |
Sort |
Chemical Components | Mechanical Performance | ||||||||||||||||
C |
Mn |
Mo |
Cr |
Ni |
Cu |
P |
S |
Si |
Yield Strenght (Mpa) |
Tensile Strenght (Mpa) |
Hardness |
||||||||
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Max |
Max |
Max |
Max |
Max |
Min |
Max |
Min |
HRC |
HEW /HBC |
||
K55 | / | / | / | / | / | / | / | / | / | / | / | 0.030 | 0.030 | / | 379 | 552 | 655 | / | / |
Source: http://www.derbosteel.com/api-5ct-psl-1-k55-octg-coupling-4-1-2-inch-galvanized-hot-rolled.html
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