SA197 STANDARD SPECIFICATION

The SA-197 standard refers to a specification for carbon steel boiler and superheater tubes. This standard is typically used in the manufacturing and specification of steel tubes that are used in boiler, superheater, and heat-exchanger applications. The “SA” prefix often indicates a standard from the American Society of Mechanical Engineers (ASME), specifically in the context of materials for boiler and pressure vessel applications.

Composition:

1. Carbon (C): Ranges typically from 0.05% to 0.35%.
2. Manganese (Mn): Usually between 0.30% and 1.50%.
3. Silicon (Si): Typically found in the range of 0.10% to 0.50%.
4. Phosphorus (P): Generally kept below 0.035%.
5. Sulfur (S): Usually below 0.040%.
6. Other Elements: Some grades might include small amounts of chromium, molybdenum, nickel, or other elements to enhance specific properties like corrosion resistance or heat resistance.