ASTM A790/A790M-08a, published by ASTM International in 2008, specifies requirements for seamless and welded ferritic/austenitic stainless steel pipes. Key features include:

‌Scope‌
Applies to pipes for general corrosive service with enhanced stress corrosion cracking resistance, covering super duplex steels containing 22% chromium, 3% molybdenum, 5-6% nickel, and 0.15-0.25% nitrogen (e.g., UNS S31803).

‌Technical Requirements‌

Defines chemical composition, mechanical properties, and dimensional tolerances
Mandates specific heat treatments to ensure microstructural integrity
Allows non-destructive testing (ultrasonic/eddy current) as an alternative to hydrostatic testing
‌Version History‌
This transitional version (superseded by 2024 edition) refined prior technical specifications while maintaining core framework elements still referenced in current standards.

‌Measurement Units‌
Supports dual-unit systems (SI and inch-pound) with SI values provided in parentheses throughout the standard.