Ma ka ASTM A213, ma kahi o nā koi no nā waiwai tensile a me ka paʻakikī, koi ʻia nā hoʻokolohua aʻe: Flattening Test and Bend Test.
ASTM A335 P22(ASME SA335 P22) he lawelawe wela kiʻekiʻe ka chromium-molybdenum alloy paipu kila, hoʻohana nui ʻia manā paila, nā mea hoʻomehana wela, a me ka welanā mea hoʻololi.
Loaʻa iā 1.90%i ka 2.60% chromium a me 0.87% a i ka 1.13% molybdenum, loaʻa i ka wela maikaʻi loa, a he kūpono hoʻi no ke kuʻi, flanging, a i ʻole nā hana hana like.
Helu UNS: K21590.
ʻO ka ASTM A335 ka kikoʻī maʻamau no nā paipu hao hao ferritic seamless i manaʻo ʻia no ka lawelawe wela kiʻekiʻe. Hoʻohana nui ʻia ia i nā boilers, superheaters, nā mea hoʻololi wela, a me nā noi ʻē aʻe e hana ana ma lalo o nā kūlana kiʻekiʻe a me nā kūlana kiʻekiʻe. Ma waho aʻe o ka Papa P22, loaʻa i nā māka ala ʻē aʻeP5 (UNS K41545), P9 (UNS K90941), P11 (UNS K11597), aP91 (UNS P90901).
Mea Hana a me ke Kūlana
ʻO nā paipu kila ASTM A335 P22 e hana ʻia e ke kaʻina hana ʻole a e hoʻopau wela a huki ʻia paha me ka hoʻopau ʻana.
ʻO nā paipu kila ʻolehe mau paipu me ka welds ole, e hoolako ana i na paipu kila P22 me ka pa'a ki'eki'e a me ka hilina'i i loko o ka wela wela a me ke ki'eki'e.
Hoʻomaʻamaʻa Wela
Pono e hoʻomaʻamaʻa ʻia nā paipu kila P22 a hoʻomaʻamaʻa ʻia e ka annealing piha, isothermal annealing, a i ʻole maʻamau a me ka hoʻoulu ʻana.
| Papa | ʻAno mālama wela | Subcritical Annealing a i ʻole Mahana |
| ASTM A335 P22 | piha a isothermal anneal | — |
| maʻamau a huhū | 1250 ℉ [675 ℃] min |
ʻO Chromium (Cr) a me molybdenum (Mo) nā mea hoʻohui nui i ke kila P22, e hoʻomaikaʻi ana i ka ikaika kiʻekiʻe, ka pale ʻana i ka oxidation, a me ka lōʻihi. Hōʻike ʻia ka ʻano hoʻohui kemika kikoʻī ma lalo nei.
| Papa | Huina, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | 0.025 ka nui | 0.025 ka nui | 0.50 ka nui | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
E hoʻokō ʻia nā hoʻokolohua waiwai mechanical o P22 e like me nā koi kūpono o ASTM A999.
Na Waiwai Tensile
| Papa | ASTM A335 P22 | |
| Ka ikaika tensile, min | 60 ksi [415 MPa] | |
| Ka ikaika hāʻawi, min | 30 ksi [205 MPa] | |
| Elongation ma 2 in. a i ʻole 50 mm (a i ʻole 4D), min | Ka lōʻihi | Kūʻē |
| ʻO ka lōʻihi haʻahaʻa loa no ka pā 5/16 in [8 mm] a ʻoi aku ka mānoanoa, nā hoʻāʻo ʻāwī, a no nā nui liʻiliʻi āpau i hoʻāʻo ʻia ma ka pauku piha. | 30% | 20% |
| Ke hoʻohana ʻia kahi hōʻailona maʻamau 2 i loko a i ʻole 50 mm ka lōʻihi a i ʻole ka liʻiliʻi liʻiliʻi me ka lōʻihi o ke ana like me 4D (4 mau manawa o ke anawaena) | 22% | 14% |
| No nā hoʻāʻo ʻāwī, e hoʻemi ʻia ka mānoanoa pā ma lalo o 1/32 in. [8 mm] mai ka elongation haʻahaʻa kumu o nā helu pākēneka ma lalo nei. | 1.50% | 1.00% |
Na waiwai paakiki
ʻAʻole kuhikuhi ka maʻamau ASTM A335 i nā koi paʻakikī kūikawā no nā paipu kila P22.
Nā mea ho'āʻo ʻē aʻe
Ka hoʻomanawanui anawaena
No ka paipu i kauoha ʻia e NPS [DN] a i ʻole ke anawaena o waho, ʻaʻole e ʻoi aku ke ʻano o ke anawaena o waho ma mua o nā koi i hōʻike ʻia ma ka papa ma lalo.
| NPS [DN] Mea koho | ʻAe ʻia nā ʻano like ʻole | |
| i loko. | mm | |
| 1/8 a 1 1/2 [6 a 40], iniha. | ±1/64 [0.015] | ±0.40 |
| Ma luna o 1 1/2 a 4 [40 a 100], ʻīniha. | ±1/32 [0.031] | ±0.79 |
| Ma luna o 4 a 8 [100 a 200], ʻīniha. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Ma luna o 8 a 12 [200 a 300], ʻīniha. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| ʻOi aku ma mua o 12 [300] | ±1 % o ke anawaena waho i hoakakaia | |
No ka paipu i kauoha ʻia i ke anawaena o loko, ʻaʻole e ʻokoʻa ke anawaena o loko ma mua o 1% mai ke anawaena o loko i ʻōlelo ʻia.
ʻO ke ahonui o ka pā
Ma waho aʻe o ka palena palena ʻole o ka mānoanoa o ka pā no ka paipu i kau ʻia e ka palena o ke kaumaha ma ASTM A999, ʻo ka mānoanoa o ka pā no ka paipu i kēlā me kēia wahi i loko o nā ʻae i kuhikuhi ʻia ma ka papa ma lalo.
| NPS [DN] Mea koho | Hoʻomanawanui |
| 1/8 a 2 1/2 [6 a 65] komo. nā lākiō t/D a pau | -12.5 % ~ +20.0 % |
| Ma luna o 2 1/2 [65], t/D ≤ 5% | -12.5 % ~ +22.5 % |
| Ma luna o 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 |
Material:ʻO ASTM A335 P22 paipu kila ʻole a me nā mea pono;
Nui:1/8 "a 24", a i ʻole e like me kāu mau koi;
Ka lōʻihi:Ka lōʻihi a ʻokiʻoki paha i ke kauoha;
Packaging:ʻO ka uhi ʻeleʻele, nā wēlau beveled, nā pale pale hopena, nā pahu lāʻau, etc.
Kākoʻo:IBR palapala hōʻoia, TPI inspection, MTC, oki, hana, a me ka hana maʻamau;
MOQ:1 m;
Kūkākūkā uku:T / T a iʻole L / C;
Kumukuai:E kelepona mai iā mākou no nā kumukūʻai paipu kila T11 hou loa;
