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NACE MR0175 / ISO 15156 SOUR SERVICE LIMITS FOR NICKEL BASE ALLOYS
Partial Pressure H2S (psi) vs. Temperature (F)
Temperature (F)
No Limit
1100
1000
900
800
700
600
500
400
300
200
100
0
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Types 4c, d, e
500 100 150 200 250 300 350 400 450 500
Par
tial P
ress
ure
H2S
(psi
)
Types4d, e
Types 4e