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Which material is best for process piping?
Quick answer
Hydrocarbons at elevated temperature: ASTM A106 Grade B or P11 Alloy Steel (1¼% chromium-½% molybdenum). Low-temperature service: ASTM A333 Grade 6 or SS 304L Stainless Steel. Chlorides and mild acids: SS 316L Stainless Steel or Duplex 2205 Stainless Steel. Severe chemicals: Hastelloy C276 or Incoloy 825.
| Service condition | Recommended materials |
|---|---|
| Hydrocarbons at elevated temperature | ASTM A106 Grade B, P11 Alloy Steel (1¼% chromium-½% molybdenum) |
| Low-temperature service | ASTM A333 Grade 6, SS 304L Stainless Steel |
| Chlorides and mild acids | SS 316L Stainless Steel, Duplex 2205 Stainless Steel |
| Severe chemicals | Hastelloy C276, Incoloy 825 |
Products
Buying tips
- Match pipe, fitting and flange specifications within a line class
- Specify NPS, schedule and end finish
- Include PMI and hydrotest requirements
- Choose bolting to suit temperature and service
Industries
Frequently asked questions
What is the best material for process piping?
It depends on the service condition. Hydrocarbons at elevated temperature: ASTM A106 Grade B or P11 / T11 / Grade 11 (1¼Cr-½Mo); Low-temperature service: ASTM A333 Grade 6 or SS 304L; Chlorides and mild acids: SS 316L or Duplex 2205; Severe chemicals: Hastelloy C276 or Incoloy 825.
Which product forms are used for process piping?
Pipes, Fittings, Flanges, Bolts.
How should I specify materials for this application?
Match pipe, fitting and flange specifications within a line class. Specify NPS, schedule and end finish. Include PMI and hydrotest requirements. Choose bolting to suit temperature and service.