ASTM A333 Qib 6 Seamless Yeeb Nkab rau Tsawg -Tub Kub Kev Pabcuam
Dec 04, 2025
ASTM A333 Qib 6 seamless kav dej piav qhia
A333 Gr.6 (ASTM A333 Qib 6) yog seamless steel yeeb nkab dav siv nyob rau hauv qis - qhov kub thiab txias ib puag ncig, nrog rau nws cov txiaj ntsig zoo nyob hauvTshwj xeeb cryogenic toughness thiab tsis kam mus rau embrittlement.
Kev siv zognickel cov ntsiab lus nruab nrab (0.4–1.0%)thiabnruj compositional tswj, A333 Gr.6 alloy steel kav tuavsuperior toughness (Charpy impact zog Ntau tshaj los yog sib npaug rau 20J)thiablub zog ntawm -46 degree, ua lawv atus nqi- siv tau zoo rau cov kav dej cryogenic. Txawm li cas los xij, lawv qhov ntsuas kub qis dua yog txwv los ntawmductile-rau- qhov hloov pauv kub (DBTT ≈ -70 degree); daim ntawv thov uas yuav tsum tau qis kub yuav tsum tau cov ntaub ntawv xws li9% nickel hlau.
Thaumtsim thiab tsim, tshwj xeeb yuav tsum tau muab raucov txheej txheem vuamthiabCryogenic fabrication ntsuaslos xyuas kom meej kev ua haujlwm kev nyab xeeb thiab kev ntseeg tau.
ASTM A333 Gr.6 Tsawg Kub Seamless Yeeb Nkab specification
A333 GR6 tshuaj muaj pes tsawg leeg
| Lub ntsiab | Kev sib xyaw (%) |
|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.30% |
| Manganese (Mn) | 0.29 - 1.06% |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.025% |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.025% |
| Silicon (Si) | 0.10 - 0.50% |
A333 GR6 Mechanical Properties
| Khoom | Tus nqi |
|---|---|
| Tensile zog | 415 MPa (min) |
| Yield zog | 240 MPa (min) |
| Elongation | Ntau dua lossis sib npaug li 30% |
| Impact Zog | 13 Joules (ntawm -45 degree) |
Cov kev xav tau cuam tshuam
| Qhov Loj ntawm Cov Qauv, min | Yam tsawg kawg nkaus nruab nrab Notched Bar cuam tshuam tus nqi ntawm txhua pawg ntawm peb tus qauv | Yam tsawg kawg nkaus Notched Bar cuam tshuam tus nqi ntawm ib qho piv txwv nkaus xwb ntawm ib txheej | Impact kub | ||||
| ft-lbf ib | J | ft-lbf ib | J | Qib | Kev cuam tshuam tsawg Test Temp |
||
| 10 ua 10 | 13 | 18 | 10 | 14 | F | C | |
| 10 ua 7,5 | 10 | 14 | 8 | 11 | 1 | -50 | -45 |
| 10,67 ua | 9 | 12 | 7 | 9 | 3 | -150 | -100 |
| 10 ua 5 | 7 | 9 | 5 | 7 | 6 | -50 | -45 |
| 3.33 Nws 10 | 5 | 7 | 3 | 4 | |||
| 10 ua 2.5 | 4 | 5 | 3 | 4 | |||
Daim ntawv thov Scenario
Roj & Roj Kev Lag Luam:
Cryogenic Liquefied Natural Gas (LNG) kis tau tus mob pipelines (-162 degree, xav tau 9% Ni steel kev txhawb nqa)
Cov khoom siv roj thiab roj extraction hauvthaj tsam arctic(xws li Arctic, Siberia)
Kev lag luam tshuaj:
Txhawb cov qauv rauUa kua hydrogen (-253 degree)thiabUa kua oxygen (-183 degree)cov hlab ntsha
Piping raucryogenic reactorsthiabkub exchangers
Lwm yam teb:
Kev siv cov qauvnyob rau hauv huab cua txias (xws li, txuas hniav, yees)
Cov tshuab ua tub yees(-50℃chav txias txias chaw)
Kev kuaj thiab tshuaj xyuas
Ntim thiab shipping
