1. ARTM A105 - bu oddiy uglerod strukturaviy po'latdir. po'lat, va sovuq qalpoqli po'lat .
2. It has two main implementation standards, one is the American standard "ASTM A105/A105M Carbon Steel Forgings for Pipeline Components", and the other is the Chinese standard "GB/T 12228 - 2006 Technical Conditions for Carbon Steel Forgings for General Valves".
3.} ARTM A105 - bu 20 # po'latdan yasalgan va uning o'ziga xos kimyoviy tarkibi talablari: uglerod (c) 0 . tarkibiga nisbatan 35% dan kam yoki teng bo'lgan. Silikon (Si) tarkibi 0,35% dan kam yoki teng; 0.6 - 1.05 o'rtasidagi ulug'vor tarkib; oltingugurt (lar) tarkibi 0,050% dan kam yoki unga teng; fosfor (p) 0,040% dan kam yoki teng; mis (cu) 0,4% dan kam yoki unga teng; nikel (ni) 0,4% dan kam yoki unga teng; Molibden (MO) 0,12% dan kam yoki unga teng; vanadiy (v) 0,08% dan kam yoki unga teng; xrom (cra) 0,3% dan kam yoki unga teng.
4. uning mexanik xususiyatlari 20 # soxta po'latdan va 16 # mn yotgan po'lat va aniq parametrlar quyidagilardan iborat:
Keskinlik kuchi (MB) 485mpa dan katta yoki teng;
250 so'mdan katta yoki teng bo'lgan kuch (SS) kuch sarflash;
Cho'zish (d) 22% dan katta yoki unga teng;
Kesishma qisish (↓) 30% dan katta yoki unga teng;
Qattiqlik HB 1873. ga teng
5. quvurlar tizimida A105 No . 20 po'latni almashtirish mumkin, ammo {}} . 20 A105 ning stressli korroziyasi (SCC) ning stakan korroziyasi (SCC) ning keskin farqi, . 20 dan biroz yomonroq emas. po'lat .
