Nyob rau hauv ASTM A213, ntxiv rau qhov yuav tsum tau rau tensile zog thiab hardness, cov kev ntsuam xyuas hauv qab no kuj yuav tsum tau: Flattening Test thiab Khoov Test.
ASTM A335 P22(ASME SA335 P22) yog cov kev pabcuam kub-kub seamless chromium-molybdenum alloy steel yeeb nkab, dav siv hauvboilers, superheaters, thiab cua sovexchangers.
Nws muaj 1.90%mus rau 2.60% chromium thiab 0.87% mus rau 1.13% molybdenum, muaj cov cua sov ua haujlwm zoo, thiab tseem tsim nyog rau kev khoov, flanging, lossis zoo sib xws ua haujlwm.
UNS Nr.: K21590
ASTM A335 yog tus qauv kev qhia tshwj xeeb rau seamless ferritic alloy-steel kav npaj rau kev pabcuam kub. Nws yog dav siv nyob rau hauv boilers, superheaters, tshav kub exchangers, thiab lwm yam kev siv uas ua hauj lwm nyob rau hauv high-temperature thiab high-pressure tej yam kev mob. Ntxiv rau Qib P22, lwm cov qib alloy muaj xws liP5 (UNS K41545), P9 (UNS K90941), P11 (UNS K11597), thiabP91 (UNS P90901).
Chaw tsim tshuaj paus thiab tej yam kev mob
ASTM A335 P22 steel kav yuav tsum tau ua los ntawm cov txheej txheem seamless thiab yuav tsum yog kub-tiav lossis txias-daws nrog kev kho tiav.
Seamless steel kavyog cov kav dej uas tsis muaj welds, uas muab P22 steel kav nrog kev ruaj ntseg thiab kev ntseeg siab nyob rau hauv high-temperature thiab high-pressure ib puag ncig.
Kev kho cua sov
P22 steel kav yuav tsum tau reheated thiab kub-kho los ntawm tag nrho cov annealing, isothermal annealing, los yog normalizing thiab tempering.
| Qib | Thaum tshav kub kub kho hom | Subcritical Annealing lossis Kub |
| ASTM A335 P22 | puv lossis isothermal anneal | — |
| normalizes thiab kub siab | 1250 ℉ [675 ℃] min |
Chromium (Cr) thiab molybdenum (Mo) yog cov ntsiab lus tseem ceeb hauv P22 steel, txhim kho qhov kub thiab txias zog, oxidation tsis kam, thiab kav ntev. Cov tshuaj muaj pes tsawg leeg yog qhia hauv qab no:
| Qib | Kev sib xyaw,% | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 hli | 0.30-0.60 Nws | 0.025 max | 0.025 max | 0.50 max | 1.90-2.60 Nws | 0.87 ~ 1.13 ib |
Kev ntsuam xyuas cov cuab yeej cuab tam ntawm P22 yuav tsum ua raws li cov cai ntawm ASTM A999.
Tensile Properties
| Qib | ASTM A335 P22 | |
| Tensile zog, min | 60 ksi [415 MPa] | |
| Yield zog, min | 30 ksi [205 MPa] | |
| Elongation nyob rau hauv 2 nti los yog 50 hli (los yog 4D), min | Ntev | Hloov |
| Basic yam tsawg kawg nkaus elongation rau phab ntsa 5/16 nyob rau hauv [8 mm] thiab tshaj nyob rau hauv thickness, strip xeem, thiab rau tag nrho cov me me xeem nyob rau hauv tag nrho seem | 30% | 20% |
| Thaum tus qauv puag ncig 2 nyob rau hauv lossis 50 hli gage ntev los yog proportionally me me piv nrog lub gage ntev sib npaug rau 4D (4 npaug ntawm txoj kab uas hla) yog siv. | 22% | 14% |
| Rau kev ntsuam xyuas sawb txiav txiav rau txhua 1/32 hauv [0.8 mm] txo cov phab ntsa tuab hauv qab 1/32 hauv. [8 mm] los ntawm qhov yooj yim elongation yam tsawg kawg nkaus ntawm cov feem pua ntawm cov ntsiab lus hauv qab no yuav tsum tau ua. | 1.50% | 1.00% |
Hardness Properties
ASTM A335 tus qauv tsis qhia tshwj xeeb hardness yuav tsum tau rau P22 steel kav.
Lwm yam khoom xeem
Txoj kab uas hla Tolerance
Rau cov yeeb nkab xaj los ntawm NPS [DN] lossis sab nraud txoj kab uas hla, qhov txawv ntawm sab nraud txoj kab uas hla yuav tsum tsis pub tshaj qhov yuav tsum tau muaj nyob rau hauv cov lus hauv qab no:
| NPS [DN] Tus tsim | Permissible Variations | |
| hauv. | mm | |
| 1/8 txog 1 1/2 [6 txog 40], nti. | ± 1/64 [0.015] | ± 0.40 |
| Tshaj 1 1/2 txog 4 [40 txog 100], nti. | ± 1/32 [0.031] | ± 0.79 hli |
| Tshaj 4 txog 8 [100 txog 200], nti. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Tshaj 8 mus rau 12 [200 txog 300], nti. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Ntau tshaj 12 [300] | ± 1% ntawm qhov ntsuas sab nraud | |
Rau cov yeeb nkab xa mus rau hauv txoj kab uas hla, sab hauv txoj kab uas hla yuav tsum tsis txhob sib txawv ntau tshaj 1% los ntawm qhov teev hauv txoj kab uas hla.
Phab ntsa Thickness kam rau ua
Ntxiv rau qhov kev txwv tsis pub tshaj ntawm phab ntsa tuab rau cov yeeb nkab raug txwv los ntawm kev txwv ntawm qhov hnyav hauv ASTM A999, phab ntsa thickness rau cov yeeb nkab ntawm txhua qhov chaw yuav tsum nyob rau hauv qhov kam rau ua tau teev nyob rau hauv cov lus hauv qab no:
| NPS [DN] Tus tsim | Ua siab ntev |
| 1/8 txog 2 1/2 [6 txog 65] incl. tag nrho t/D ratios | -12.5% ~ + 20.0% |
| Saum 2 1/2 [65], t/D ≤ 5% | 12.5% ~ + 22.5% |
| Tshaj 2 1/2, t / D ＞ 5% | 12.5% ~ + 15.0% |
| ASME | ASTM | EN | DIN | JIS |
| ASME SA335 P22 | ASTM A213 T22 | DIN 10216-2 10CrMo9-10 | DIN 17175 10CrMo9-10 | JIS G 3458 STPA25 |
Khoom siv:ASTM A335 P22 seamless steel kav thiab fittings;
Loj:1/8 "rau 24", los yog kho raws li koj xav tau;
Ntev:Random ntev los yog txiav kom txiav;
Ntim:Dub txheej, beveled xaus, yeeb nkab kawg tiv thaiv, ntoo crates, thiab lwm yam.
Kev them nyiaj yug:IBR ntawv pov thawj, TPI tshuaj xyuas, MTC, txiav, ua, thiab kho kom haum;
MOQ:1 m;
Cov nqe lus them nqi:T / T lossis L / C;
Nqe:Tiv tauj peb rau qhov tseeb T11 steel yeeb nkab nqi;
