Ammonia and urea process streams carry specific stress-corrosion cracking risks that general chemical-processing material guidance doesn't fully cover — the exact process stream matters more than the generic 'fertilizer' label.
| Dominant Failure Mode | Stress-corrosion cracking specific to ammonia and urea service |
| Governing Standard | General ASME/TEMA, process-specific material guidance |
| Typical Material Default | Stainless Steel (urea-grade considerations), Duplex for chloride-adjacent streams |
| Typical Structural Type | Fixed or Floating, depending on the specific process unit |
The specific fertilizer process stream — ammonia, urea, or a downstream product — drives material selection.
Ammonia and urea process streams carry specific stress-corrosion cracking mechanisms that don't map directly onto general chemical-service guidance — the exact process stream needs to be identified for correct material selection.
Urea plant equipment often has specific grade requirements (sometimes low-ferrite or urea-grade specified stainless) beyond standard 316L — confirm your project's specific urea service classification with our engineering team.
Yes, anhydrous ammonia service has well-documented stress-corrosion cracking risk in carbon steel under certain conditions — this is a known industry consideration worth discussing directly if your project involves ammonia handling.
Every enquiry is checked against governing code, material compatibility and manufacturing feasibility before a quote is issued. Use our product, material, grade and standards guides to freeze the RFQ — then confirm with engineering.
Send your fluid service, pressure class and governing standard — we'll confirm the right product and material.