Table 1 Composition of the as-received material (wt. %).

From: Significant reduction in creep life of P91 steam pipe elbow caused by an aberrant microstructure after short-term service

Element

C

Si

Mn

Cr

Mo

Ni

V

Nb

Al

Cu

P

S

Content

0.14

0.29

0.45

8.67

0.91

0.17

0.23

0.08

0.005

0.02

0.02

0.002

Code requirement

0.08–0.12

0.2–0.5

0.3–0.6

8.0–9.0

0.85–1.05

 ≤ 0.4

0.18–0.25

0.08–0.10

 ≤ 0.04

–

 ≤ 0.02

 ≤ 0.01

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