### 1.}} ** Dab tsi yog SA 33 cov khoom siv P222? **
SA 332 yog cov tshuaj chromium-molybdenum (cr-mo)} kev lag luam {}} Cov khoom siv muaj cov khoom siv zoo, oxidation tsis kam, thiab weldability, ua rau nws tsim nyog rau chav piping, thiab kev hloov pauv hluav taws xob, thiab cov qib cua sov (1076℃f).
## 2.}} ** Qib P22 Txhais Tau Li Cas? **
Tus lej "P22" yog hais txog ib qho kev sib xyaw ua ke thoob plaws Astm A335 tus qauv, muaj kwv yees li ntawm nws tus "p" sawv ntsug rau "yeeb nkab," paub qhov sib txawv ntawm nws los ntawm "T22" (siv rau cov raj) . p22 yog sib npaug rau **
### 3.}}} ** Dab tsi yog spec ntawm P22 Yeeb Nkab? **
Cov kev qhia tshwj xeeb rau P22 kav yog txhais los ntawm ** AVEM A335 / A335m **, npog:
- ** Muaj Tshuaj Lom Zem Pib 4 **:
- C: 0 {. 05-0.15%, mn: 0.30-0.60%, CR: 1.60%, MO: 0.87-1.13%.
- ** Cov cuab yeej kho tshuab **:
- tensile lub zog: ntau dua lossis sib npaug rau 415 MPa (60 ksi), tawm los ntawm 205 MPa (30 ksi), elongation: ntau dua los yog sib npaug nrog 30%.
- ** Cov ntawv thov **: Siv rau hauv cov nroj tsuag hluav taws xob (tsawg dua los yog sib npaug rau 580 degree), Petroci Dute Cov Systems.
### 4.}}} ** Dab tsi yog qhov nyuaj ntawm A335 P22 Yeeb? **
Qhov kev nyuaj ntawm A335 P22-200 HBW (HRC) yog nyob ib puag ncig (HRC) "
### 5.}} ** Qib AV A335 P12 dab tsi? **
ASTM A335 P12 is another Cr-Mo alloy steel grade, with a composition of **~1% Cr and 0.5% Mo**. It is used for moderate high-temperature applications (<=540℃) and has lower alloy content compared to P22. Its Chinese equivalent is **15CrMoG** .
Yog xav paub ntxiv, koj tuaj yeem xa mus rau ASTM A335 txheem lossis chaw tsim khoom specifications .
