4340 / 34CrNiMo6 High Tensile Steel
HOM: PROMISTEEL
Qib: AISI 4340, 1.6582, 34CrNiMo6, SNCM439, EN24
PIB: Round Bar, Heavy Phaj, Forged Block
KEV PAB CUAM: Nquag, Annealed, Q + T
HARDNESS: QT Lub Sij Hawm: 32-36 HRC (300-340 HB)
FEATURE: Sib sib zog nqus hardenability, siab cuam tshuam toughness
APPLICATION: Aircraft Landing Gear, Heavy Shafts, Fais Fab Kis
MOQ: 25 Tuj
AISI 4340 (34CrNiMo6)yog qhov kub zoo tshaj plaws - kho tau qis- hlau alloy uas muaj nickel, chromium, thiab molybdenum. Nws yog lub npe hu rau nwstshwj xeeb toughnessthiab muaj peev xwm txhim kho lub zog siab hauv qhov cua sov- kho mob thaum khaws cov kev qaug zog zoo.
Muab pivrau 4140, ntxiv ntawmNickel (1.5% - 2.0%)muab 4340 superiorDeep Hardenability. This means it can achieve uniform hardness from the surface to the center, even in large cross-sections (e.g., shafts >150 mm diam). Nws yog cov khoom siv rau kev ntxhov siab heev hauv aerospace, roj & roj drilling, thiab tshuab hnyavry qhov twg tsis ua hauj lwm tsis yog ib qho kev xaiv.
Khoom Specifications & Qib Equivalents
Peb muab siab -purity Cr-Ni-Mo steel, kom ntseeg tau tias cov khoom siv isotropics thiab kev ywj pheej los ntawm hydrogen embrittlement.
Table-1
Tus qauv thoob ntiaj teb rau hnyav -cov haujlwm engineering applications.
International Qib Ckev sib tham |
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| GB (Tuam Tshoj) | ASTM / AISI (USA) | DIN / EN (Lub teb chaws Yelemees) | JIS (Nyiv) | BS (UK) |
| 40CrNiMoA | 4340 | 1.6582 (34CrNiMo6) | TIAB SA 439 | EN24/817M40 |
| 45CrNiMoVA | 4340 Mod | 1.6580 (30CrNiMo8) | TIAB SA 447 | - |
| - | 4337 | - | TIAB SA 431 | - |
Table-2
Nickel ua kom toughness; Molybdenum tiv thaiv temper brittleness.
Chemical Composition (MassFeem %) |
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| Qib | C | Cr | Ni | Mo | Mn |
| 4340 | 0.38~0.43 | 0.70~0.90 | 1.65~2.00 | 0.20~0.30 | 0.60~0.80 |
| 34CrNiMo6 (1.6582) | 0.30~0.38 | 1.30~1.70 | 1.30~1.70 | 0.15~0.30 | 0.50~0.80 |
| TIAB SA 439 | 0.36~0.41 | 0.60~1.00 | 1.60~2.00 | 0.15~0.30 | 0.60~0.90 |
Table-3
Loj forged tuav yog muaj rau kev lag luam hnyav.
Supply Range & Raumats |
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| Yam khoom | Qhov Loj (mm) | Kev Xa Khoom | Nto tiav |
| Round Bar | Dia: 20 - 800 | Kub Rolled / Forged / QT |
Dub / Peeled / Tig |
| Pav ca Bar | 30 - 400 x 50 - 1000 | Forged / Milled |
Machined (6-Sab) |
| Phaj | Thickness: 20 - 300 | Kub Rolled / QT |
Dub / Txhaj tshuaj tiv thaiv |
| Forged Block | Txiav txiav | Forg / QT | Milled |
Ntsiab nta and Qhov Zoo
- Deep Hardenability:Ua tsaug rau cov ntsiab lus Nickel, 4340 tuaj yeem ua kom tawv los ntawm - thiab - los ntawm cov ntu loj, qhov 4140 tsuas yog tawv tawv rau ntawm cov kab tuab.
- High Impact Toughness:Ua pov thawj zoo ductility thiab tsis kam mus poob siab loads, txawm nyob rau hauv sub-zero kub.
- Superior Strength:tuaj yeem ua cua sov- kho kom muaj zog tensile zoo kawg nkaus (txog 1500 MPa / 220 ksi) thaum tuav cov ductility zoo dua li lwm cov hlau feem ntau ntawm lub zog no.
- Fatigue Resistance:Zoo tagnrho rau cyclically loaded qhov chaw xws li crankshafts thiab tsaws iav.
- EN24 sib npaug:Peb 34CrNiMo6 phim qhov nrovEN24qib siv dav hauv UK thiab Kev Lag Luam Kev Lag Luam.
Tej kev siv
4340 / 34CrNiMo6 yog siv qhov twg 4140 tsis muaj zog lossis tawv txaus:
Aerospace
Lub dav hlau tsaws iav Cheebtsam, cov khoom siv, thiab lub dav hlau rotor shafts.
Tsheb sib tw
Siab -kev ua tau zoo crankshafts, txuas rods, thiab kis axles.
Hnyav Machinery
Main shafts rau cua turbines, pob zeb crushers, thiab dov mills.
Roj & Roj
Downhole drilling cuab yeej, laum dab tshos, thiab siab - siab li qub.
Kev lag luam pwm
Siv los ua pwm yas dhos rau cov yas pwm loj uas yuav tsum tau muaj zog compressive.
FAQ
Q1: Dab tsi yog qhov txawv ntawm 4140 thiab 4340 steel?
A1: Nickel. 4340 contains ~1.8% nickel, while 4140 contains none. This nickel gives 4340 much higher toughness and allows it to harden deeper in thick sections. If your part is thick (>100 mm) thiab xav tau cov tub ntxhais siab zog, xaiv 4340.
Q2: Puas yog 34CrNiMo6 zoo ib yam li 4340?
A2: Lawv zoo sib xws tab sis tsis zoo ib yam . 34CrNiMo6 (1.6582) yog European (DIN) tus qauv, uas feem ntau muaj cov pa roj carbon tsawg me ntsis tab sis siab dua chromium dua li AISI 4340. Txawm li cas los xij, rau feem ntau hnyav - daim ntawv thov kev ua haujlwm, lawv raug suav tias yog cov khoom sib npaug sib npaug.
Q3: Puas yog 4340 steel nyuaj rau tshuab?
A3: Nws nyob ntawm qhov xwm txheej. Nyob rau hauv lub xeev annealed, nws tshuab tsim nyog zoo. Hauv lub xeev hardened (QT) (piv txwv li, 30-35 HRC), machining yog qhov nyuaj dua thiab yuav tsum tau siv cov cuab yeej muaj zog, tab sis nws ua rau lub ntsej muag zoo dua.
Q4: Kuv puas tuaj yeem vuam 4340 steel?
A4: Vuam yog qhov nyuaj. Vim nws cov ntsiab lus alloy siab, 4340 muaj kev pheej hmoo siab ntawm kev tawg thaum vuam. Nws yuav tsum tau kub preheat kub (200-}300 degree) thiab tswj tom qab vuam txias. Vuam nyob rau hauv lub hardened mob yog heev poob siab.
Cim npe nrov: 4340 / 34crnimo6 siab tensile steel, Tuam Tshoj 4340 / 34crnimo6 siab tensile steel manufacturers, lwm tus neeg
Tug
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