P92 tshuaj muaj pes tsawg leeg yog dab tsi

Feb 06, 2026

Lub ntsiab alloying ntsiab ntawmA335P92 alloy steel yeeb nkabxws li chromium, molybdenum, vanadium, niobium, thiab nitrogen. Chromium txhim kho cov hlau oxidation tsis kam thiab corrosion kuj, feem ntau yog li ntawm 8.5% mus rau 9.5%; molybdenum pab txhim kho siab - kub lub zog, nrog rau cov ntsiab lus ntawm kwv yees li 0.3% mus rau 0.6%; qhov sib ntxiv ntawm vanadium thiab niobium refines lub grain loj, txhim kho cov khoom toughness thiab creep kuj; thiab nitrogen stabilizes cov qauv austenitic.

Qhov sib npaug ntawm cov ntsiab lus no tso cai rau A335P92 alloy steel yeeb nkab kom tswj tau cov khoom siv kho tshuab zoo txawm tias qhov kub thiab txias, xws li lub zog tensile siab thiab creep rupture zog siab tshaj 600 degrees Celsius. Cov khoom siv kuj muaj qhov zoo weldability thiab machinability, yooj yim rau nws siv hauv cov tswv yim engineering.

GNEE Group yog cov chaw tsim khoom hauv cov yeeb nkab steel hauv Suav teb, muab cov yeeb nkab kev sib tham thiab kev ua haujlwm.24/7 txhawb ntau hom lusLus Askiv, Arabic, Spanish -cov lus teb hauv 30 feeb, tsis muaj lus nug.

Alloy Steel P92 Pipes Chemical Composition

C, %	Mn,%	P, %	S, %	Si,%	Cr,%	Mo,%
0.07 - 0.13	0.30-0.60	0.020 max	0.010 max	0.50 max	8.50 - 9.50	0.30 - 0.60

Cov pa roj carbon (C) 0.07-0.13% cov tshuaj tiv thaiv kom muaj zog, txhim kho lub zog, tab sis yuav tsum tau tswj kom tsis txhob muaj qhov sib tsoo.
Chromium (Cr) 8.50-9.50% tsim cov oxide zaj duab xis ntom ntom, txhim kho oxidation tsis kam thiab corrosion kuj.
Molybdenum (Mo) 0.30–0.60% txhim khu kev ua haujlwm siab - qhov kub thiab txias tsis kam, tab sis nws cov ntsiab lus qis dua li ntawm P91 steel.
Tungsten (W) 1.50–2.00% ua haujlwm sib koom ua ke nrog molybdenum, ua kom cov molybdenum sib npaug (Mo+0.5W) mus txog kwv yees li 1.5%, txhim kho qhov kub siab - kub.
Vanadium (V) 0.15-0.25% cov ntaub ntawv carbides nrog carbon, refines nplej, thiab txhim kho toughness.
Niobium (Nb) 0.04–0.09% inhibits kev loj hlob ntawm cov qoob loo thiab txhim khu kev kub siab -kub stability.
Nitrogen (N) 0.03-0.07% cov tshuaj tiv thaiv kom muaj zog, txhim kho creep zog.
Boron (B) 0.001–0.006 Cov kab sib ntxiv ua rau muaj txiaj ntsig zoo ntawm cov ciam teb lub zog thiab inhibits creep crack propagation.
Manganese (Mn) 0.30–0.60 Deoxidizer, txhim kho kev ua haujlwm kub.
Silicon (Si) Tsawg dua lossis sib npaug ntawm 0.50 Deoxidizer, txhim kho lub zog.
Phosphorus (P) Tsawg dua los yog sib npaug rau 0.020 impurity caij, yuav tsum tau tswj nruj kom tsis txhob brittleness.
Sulfur (S) Tsawg dua los yog sib npaug rau 0.010 impurity caij, yuav tsum tau tswj nruj kom tsis txhob kub tawg.
Nickel (Ni) Tsawg dua los yog sib npaug rau 0.40 Kab sib ntxiv, txhim kho toughness.
Aluminium (Al) Tsawg dua lossis sib npaug ntawm 0.02 Deoxidizer, tswj cov qoob loo loj.

A335 P92 Alloy Steel Pipes Application Scenarios

1. Kev lag luam fais fab: P92 cov kav dej tau siv dav hauv cov kav dej loj thiab cov tshuab ua kom sov ntawm ultra-supercritical units. Piv txwv li, nyob rau hauv ib tug 1000MW chav tsev project nyob rau hauv Tuam Tshoj, P92 kav dej tiv thaiv tsis tau mus txog 31MPa / 610℃thiab muaj ib tug kev pab cuam lub neej tshaj 100,000 teev. Piv rau P91, P92 tso cai rau 20% txo cov yeeb nkab phab ntsa tuab, txo qis thermal inertia thiab txhim kho chav ua haujlwm.

2. Petrochemical Kev Lag Luam: Hauv qhov siab - qhov kub thiab txias (400-550 degree) ntawm hydrocracking units, P92 steel kav yog siv los thauj cov sib tov ntawm hydrogen thiab hydrocarbons. Nws tsis kam mus rau hydrogen corrosion (dhau NACE TM0177 tus qauv xeem) tiv thaiv cov cuab yeej embrittlement tsis ua haujlwm.

3. Nuclear Fais Fab Kev Lag Luam: P92 tau raug xaiv los ua cov khoom sib tw hauv lub voj voog thib ob ntawm plaub- tiam nuclear fais fab nroj tsuag. Kev sim qhia tau hais tias nws qhov cuam tshuam toughness attenuation tus nqi nyob rau hauv irradiation yog 40% qis dua li ntawm 316L stainless hlau.