15CrMo 20CrMo Steel Phaj

15CrMo steel phaj yog cov qauv hlau alloy, uas yog cov khoom siv hluav taws xob kub-resistant steel nrog pearlite qauv. 15CrMo steel phaj muaj lub zog siab ntawm qhov kub thiab txias hauv qab 500-550 degree, kev ua haujlwm zoo thiab ductility nyob rau hauv txias deformation, thiab siv tau weldability (preheat mus rau 300 degree ua ntej vuam thiab tom qab vuam kub kho).

20CrMo alloy steel nplooj ntawv feem ntau yog siv hauv quenched, tempered lossis carburized xeev. 20CrMo steel yog siv rau hauv kev tsim cov kav dej siab thiab ntau yam fasteners, nrog rau cov khoom siv carburized ntau dua xws li lub zog thiab cov ncej, ua haujlwm hauv qhov chaw tsis muaj xeb thiab ua haujlwm kub hauv qab 250 degree thiab muaj cov sib xyaw ntawm nitrogen thiab hydrogen.

Khoom Parameter:

15CrMo steel phajChemical muaj pes tsawg leeg (%):

	Tshuaj muaj pes tsawg leeg (%)
	Nrog	Min.	Si	Kr	Mo	Tsis yog	Nb+Ta	Nrog	P
15 KrM	0.12~0.18	0.40~0.70	0.17~0.37	0.80~1.10	0.40~0.55	Tsawg dua lossis sib npaug rau 0.30	_	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035

15CrMo steel phajMechanical zog:

	Yield strength σs/MPa (>=)	Tensile strength σb/MPa (>=)	Elongation δ5/% (>=)
15 KrM	440~640	235	21

20CrMo alloy steel nplooj ntawvTshuaj muaj pes tsawg leeg:

Qib	Nrog	Si	Min.	P	Nrog	Kr	Mo
20 KrMo	0.17-0.24	0.17-0.37	0.40-0.70	Tsawg dua lossis sib npaug rau 0.030	Tsawg dua lossis sib npaug rau 0.030	0.80-1.10	0.15-0.25

20CrMo alloy steel nplooj ntawvMechanical khoom:

Lub zog tensile σb (MPa)	Yield zog σs 0.2 (MPa)	Elongation δ 5 (%)	Kev txo qis hauv cheeb tsam hla ntu ψ (%)	Ballistic kev ua tau zoo ntawm AQ(J)	Kev cuam tshuam lub zog tus nqi kv (J/cm2)	Hardness (HB)	Qauv loj
Min 835	Min 540	Min 10	Min 40	Min 47	Min 59	Max 179	15 hli

Cov xwm txheej ntxiv: UT (Ultrasonic Test), AR (Kub Rolled nkaus xwb), TMCP (Thermo Mechanical Processing), N (Normalized), Q + T (Quenched thiab Tempered), Z Direction Test (Z15, Z25, Z35), Impact Test Charpy V-notch, kev xeem thib peb (xws li SGS xeem), tua blasting thiab coated painting.