30CrMnSiA alloy steel phaj belongs rau nruab nrab carbon steel, cov hlau phaj muaj lub zog siab, tab sis cov vuam kev ua tau zoo tsis zoo.30CrMnSiA steel phaj muaj lub zog siab thiab txaus toughness tom qab tempering. 30CrMnSiA muaj machinability zoo, me me machining deformation thiab zoo heev qaug zog kuj. Nws yog siv rau shafts, piston qhov chaw thiab lwm yam. Nws yog siv rau ntau yam tshwj xeeb hnav-resistant spare qhov chaw ntawm tsheb thiab aircrafts.
30CrMnSiA alloy steel phaj tshuaj muaj pes tsawg leeg: carbon C: 0.28 ~ 0.34 Si: 0.90 ~ 1.2{{15 }} manganese Mn: 0.80 ~ 1.10 sulfur S: tso cov ntsiab lus seem ntawm Tsawg dua lossis sib npaug rau 0.025 Phosphorus P: tso cai cov ntsiab lus seem ntawm Tsawg dua lossis sib npaug rau 0.025 Chromium Cr: 0.80 ~ 1.10 Nickel Ni: tso cai cov ntsiab lus seem ntawm Tsawg dua lossis sib npaug rau 0.030 Copper Cu: tso cai cov ntsiab lus seem ntawm Tsawg dua lossis sib npaug rau 0.025 0.025
30CrMnSiA alloy steel phaj mechanical zog:
Tensile zog σb (MPa): Ntau dua lossis sib npaug rau 1080 (110)
Yield zog σs (MPa): Ntau dua lossis sib npaug rau 835 (85) elongation δ5 (%): Ntau dua lossis sib npaug rau 10
Nqe lus shrinkage ψ (%): Ntau dua los yog sib npaug rau 45 Impact work Akv (J): Ntau dua lossis sib npaug rau 39
Impact toughness tus nqi kv (J/cm²): Ntau dua los yog sib npaug rau 49(5)
Hardness: Tsawg dua los yog sib npaug rau 229HB
30CrMnSiA alloy steel phaj kub kho specifications: quenching 880 degree, roj-txias; tempering 540 degree, dej-txias, roj-txias.
30CrMnSiA alloy steel phaj xa mus rau kev kho cua sov (normalised, annealed los yog kub tempering) los yog tsis-kub kho lub xeev xa.
