Class |
Type |
Chemical Components | Mechanical Performance | ||||||||||||||||
C | Mn | Mo | Cr | Ni | Cu | P | S | Si | Yield Strength (Mpa) |
Tensile strength (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: https://www.derbosteelpipe.com/api-5ct-psl-1-octg-coupling-hot-rolled-k55-4-1-2-inch-galvanized.html
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