18Cr2Ni4W Alloy Steel Bar
yield zog σ s (MPa): Ntau dua lossis sib npaug rau 835
Elongation δ 5 (%) : Ntau dua lossis sib npaug rau 10
Kev txo qis ntawm Cheeb Tsam ψ (%) : Ntau dua lossis sib npaug rau 45
Tshuaj muaj pes tsawg leeg
C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) |
0.13-0.19 | 0.17-0.37 | 0.3-0.6 | max 0.035 | max 0.035 | 1.35-1.65 | 4.0-4.5 |
Mechanical Properties
Tensile zog σ b (MPa): Ntau dua lossis sib npaug rau 1180
yield zog σ s (MPa): Ntau dua lossis sib npaug rau 835
Elongation δ 5 (%) : Ntau dua lossis sib npaug rau 10
Qhov txo qis ntawm cheeb tsam ψ (%) : Ntau dua lossis sib npaug rau 45
Lub zog cuam tshuam Akv (J): Ntau dua lossis sib npaug rau 78
Qhov cuam tshuam toughness tus nqi kv (J / cm²): Ntau dua lossis sib npaug rau 98 (10)
Hardness: Tsawg dua los yog sib npaug rau 269HB
Kev kho cua sov specification thiab metallographic qauv
Kev kho cua sov specification: quenching: 950 degree rau thawj zaug, 850 degree rau zaum ob, cua txias; Kub ntawm 200 degree, dej txias thiab cua txias.
Daim ntawv thov
Nickel Chromium Steels rau siv lub tshuab siv.
Hais txog Steel Hom
Hom hlau | Txuj | Lub teb chaws Code | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) |
SNC815 | 3230 | CNS | 0.12-0.18 | 0.15-0.35 | 0.35-0.65 | max 0.03 | max 0.03 | 0.7-1.0 |
20 Cr2Ni4 | 3077 | GB | 0.17-0.23 | 0.17-0.37 | 0.3-0.6 | max 0.035 | max 0.035 | 1.25-1.65 |
18Cr2Ni4WA | 3077 | GB | 0.13-0.19 | 0.17-0.37 | 0.3-0.6 | max 0.035 | max 0.035 | 1.35-1.65 |
SNC815 | G4102 | JIS | 0.12-0.18 | 0.15-0.35 | 0.35-0.65 | max 0.03 | max 0.03 | 0.7-1.0 |
3316 | - | SAE | 0.14-0.19 | 0.2-0.35 | 0.45-0.6 | max 0.025 | max 0.025 | 1.4-1.75 |
14 NiCr14 | 1654 | DIN | 0.14-0.2 | max 0.4 | 0.4-0.7 | max 0.035 | max 0.035 |
18Cr2Ni4WA belongs rau high-strength nruab nrab alloy carburizing hlau. Txhawm rau kom ntseeg tau tias cov ntsiab lus ntawm carbide thiab austenite tsis tshaj tus qauv, carburizing ntawm 900 ~ 920 degree tom qab carburizing, tempering ntawm 600 ~ 650 degree, thiab kev kho cryogenic tuaj yeem siv. Lub hardness tom qab roj quenching yog hais txog 48. Kom ncav cuag HRC 58-63, nto carburizing yuav tsum tau nqa tawm.
18Cr2Ni4WA steel feem ntau yog siv los ua alloy carburized steel nrog lub zog siab, toughness thiab zoo hardenability. Nws kuj tseem siv tau rau hauv cov ntaub ntawv ntawm quenching thiab tempering yam tsis muaj carburizing. Nws feem ntau yog siv los ua ib qho tseem ceeb nrog rau seem loj, siab load, zoo toughness thiab qis rhiab heev.
Rau qee qhov tseem ceeb ua haujlwm nyob rau hauv qhov hnyav, xws li lub zog thiab crankshafts nyob rau hauv high-speed diesel xyaw, tsheb thauj khoom hnyav, aeroengines thiab lwm yam khoom siv, 18Cr2Ni4WA nrog ntau cov ntsiab lus alloy feem ntau siv.
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