ASTM A335 P5, tseem hu ua ASME SA335 P5, yog ib qho qis-alloy seamless steel yeeb nkab tsim los rau kev pabcuam kub.
P5 muaj 4.00 ~ 6.00% chromium thiab 0.45 ~ 0.65% molybdenum, muab lub zog zoo thiab ua haujlwm tau zoo nyob rau hauv qhov kub thiab txias. Nws yog dav siv nyob rau hauv cov khoom xws li boilers, superheaters, thiab tshav kub exchangers.
Nws lub npe UNS yog K41545.
Chaw tsim tshuaj paus thiab tej yam kev mob
ASTM A335 P5 steel kav yuav tsum tau ua los ntawm cov txheej txheem seamless thiab yuav tsum yog kub tiav los yog txias kos, raws li tau teev tseg.
Cov kav dej kub yog seamless steel kav tsim los ntawm billets los ntawm cua sov thiab dov txheej txheem, thaum txias-draw kav dej yog seamless steel kav uas tsim los ntawm kos cov kav dej kub ntawm chav tsev kub.
Yog tias koj xav kawm ntxiv txog kev tsim cov txheej txheem ntawm ob hom seamless steel kav, koj tuaj yeem nyem“Seamless Steel Pipe yog dab tsi?”kom paub meej ntxiv.
Kev kho cua sov
ASTM A335 P5 kav yuav tsum tau rov ua dua rau kev kho cua sov thiab kho cua sov los ntawmtag nrho los yog isothermal annealing or normalizing thiab tempering.
Cov kev cai tshwj xeeb tau qhia hauv cov lus hauv qab no:
| Qib | Thaum tshav kub kub kho hom | Subcritical Annealing lossis Kub |
| ASTM A335 P5 | puv lossis isothermal anneal | — |
| normalizes thiab kub siab | 1250 ℉ [675 ℃] min |
Kev ua haujlwm uas suav nrog cua sov cov kav hlau saum lawv qhov ntsuas kub tseem ceeb, xws li vuam, flanging, thiab kub dabtsi yog khoov, yuav tsum tau ua raws li kev kho cua sov kom tsim nyog.
Cov kev sim rau cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab ntawm P5 steel kav yuav tsum ua raws li cov kev cai ntawm ASTM A999.
| Qib | Kev sib xyaw,% | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P5 | 0.15 max | 0.30-0.60 Nws | 0.025 max | 0.025 max | 0.50 max | 4.00-6.00 Nws | 0.45 ~ 0.65 hli |
Tensile Properties
| Qib | Tensile zog | Yield zog | Elongation hauv 2 in. or 50 mm |
| P5 | 60 ksi [415 MPa] min | 30 ksi [205 MPa] min | 30% min |
Hardness Properties
ASTM A335 tus qauv tsis qhia meej txog qhov yuav tsum tau ua kom tawv tawv rau P5 steel kav.
Flattening Test
Kev ntsuam xyuas flattening yuav tsum tau ua thiab coj mus kuaj raws li cov kev cai ntawm ASTM A999, thiab cov yeeb nkab hlais yuav raug siv los ua cov qauv.
Khoov Test
Rau cov yeeb nkab uas nws txoj kab uas hla tshaj NPS 25 thiab nws txoj kab uas hla mus rau phab ntsa thickness piv yog 7.0 los yog tsawg dua yuav tsum tau mus rau qhov khoov xeem es tsis txhob flattening xeem.
Cov qauv ntsuas khoov yuav tsum khoov ntawm chav tsev kub txog 180 ° yam tsis muaj qhov tawg ntawm sab nraud ntawm qhov khoov. Sab hauv txoj kab uas hla ntawm qhov khoov yuav tsum yog 1 in. [25 mm].
Qhov tshwm sim
Qhov saum npoo ntawm cov yeeb nkab steel yuav tsum du thiab txawm, tsis muaj khawb, seams, laps, kua muag, los yog slivers.
Yog hais tias qhov tob ntawm ib qho tsis xws luag tshaj 12.5% ntawm nominal phab ntsa thickness los yog yog hais tias tus seem phab ntsa thickness yog qis dua qhov tsawg kawg nkaus thickness, lub cheeb tsam yuav tsum raug xam tias yog puas.
Thaum cov phab ntsa seem tseem nyob hauv qhov txwv tsis pub dhau, qhov tsis xws luag yuav raug tshem tawm los ntawm kev sib tsoo.
Yog tias qhov seem ntawm phab ntsa tuab yog qis dua qhov yuav tsum tau ua, qhov tsis xws luag yuav tsum tau kho los ntawm vuam lossis tshem tawm los ntawm kev txiav.
Txoj kab uas hla Tolerance
Rau cov kav dej xaj los ntawm NPS [DN] lossis sab nraud txoj kab uas hla, qhov sib txawv ntawm sab nraud txoj kab uas hla yuav tsum tsis pub tshaj qhov yuav tsum tau muaj nyob 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 Tolerances
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 | Tolerance, % daim ntawv qhia |
| 1/8 txog 2 1/2 [6 txog 65] incl. tag nrho t/D ratios | -12.5 - 20.0 Nws |
| Saum 2 1/2 [65], t/D ≤ 5% | -12.5 - 22.5 |
| Tshaj 2 1/2, t / D ＞ 5% | -12.5 - 15.0 Nws |
| t = Specified Phab ntsa Thickness; D = Qhia tawm sab nraud. | |
ASTM A335 P5 steel kav feem ntau yog siv hauv cov kav dej ua haujlwm nyob rau hauv qhov kub thiab txias.
Vim lawv qhov kub thiab txias ua haujlwm zoo heev thiab cov khoom siv kho tshuab, lawv tau siv dav hauv petrochemical, tsim hluav taws xob, thiab kev lag luam refinery.
Cov ntawv thov tshwj xeeb suav nrog:
- Boiler kav dej
- Thaum tshav kub kub exchangers
- Petrochemical txheej txheem kab
- Fais fab nroj tsuag piping
- Boiler siab hlab ntsha
| ASME | ASTM | EN | JIS |
| ASME SA335 P5 | ASTM A213 T5 | TS EN 10216-2 X11CrMo5 + I | JIS G 3458 STPA25 |
Khoom siv:ASTM A335 P5 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.
