20CrMo kub dov steel ntawv

steel puag ncig tuav yog dav siv nyob rau hauv machinery ua, autombile ua, railway, mine machinery, peoleum machinry, ua liaj ua teb machinery thiab pej xeem archtectue xws li txhua yam ntawm shafts, screws, txuas rods, hardware tools, gears, standard parts, spanners fasteners, structural qhov chaw rau tsheb thiab kev ua liaj ua teb machinery, sab nrauv thiab sab hauv lub tes tsho, rollers thiab pob rau bearing ua.
GB 20CrMo steel yog ib yam ntawm Suav alloy steel rau engineering thiab mechanical qauv lub hom phiaj, uas feem ntau yog siv nyob rau hauv quenching los yog tempering los yog carburizing thiab quenching. 20CrMo cov khoom muaj lub zog kub kub, zoo hardenability, tsis temper brittleness, txias strain plasticity, zoo machinability thiab weldability.

20crmo Alloy Steel Bar Chemical Composition

Qib	C	Si	Mn	P	S	Cr	Mo
20 CrMo	0.17-0.24	0.17-0.37	0.40-0.70	≤ 0.030	≤ 0.030	0.80-1.10	0.15-0.25

Mechanical khoom:

Tensile zog σb (MPa)	Yield zog 0.2 (MPa)	Elongation δ 5 (%)	Kev txo qis ntawm cheeb tsam hla ψ (%)	Ballistic ua haujlwm Akv (J)	Pounding toughness tus nqi αkv (J/cm2)	Hardness (HB)	Qauv Loj
Min 835	Min 540	Min 10	Min 40	Min 47	Min 59	Max 179	15 hli

Daim ntawv thov

20CrMo alloy steel yog siv rau hauv kev tsim cov khoom siv tsis muaj corrosive hauv cov khoom siv tshuaj thiab cov kav dej siab, fasteners, chav turbines, boiler blades thiab forgings nrog kev ua haujlwm kub hauv qab 250 ° C, thiab tseem ceeb carburizing qhov chaw xws li lub zog thiab shafts hauv cov cav tov. . Nws kuj tseem siv tau rau qhov chaw ntawm 1Cr13 steel los tsim cov nruab nrab siab, tsis tshua muaj siab chav turbines nyob rau hauv lub superheated chav cheeb tsam siab theem ua hauj lwm hniav.

Kev kho cua sov Specification

• Thawj quenching cua sov: 880 ° C (Quenching tus neeg saib xyuas: dej, roj)
• Tempering kub: 500 ° C (tus neeg saib xyuas - dej, roj)

Qib sib npaug

20CrMo khoom sib npaug rau US ASTM, European lub teb chaws Yelemees DIN EN, British BS EN, Fabkis NF EN, Japanese JIS, thiab ISO tus qauv. (Rau siv)

20CrMo steel sib npaug

Tuam Tshoj

Teb chaws USA

Lub teb chaws Yelemees

Nyiv

Fabkis

UK

ISO

Txuj

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Qib (Steel Number)

Txuj

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Qib (Steel Number)

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Qib (Steel Number)

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GB/T 3077

20 CrMo

AISI SAE; ASTM A29 / A29M ASTM

4120

TS EN 10083-3

25CrMo4 (1.7218)

JIS G4053

SCM420

NF EN 10083-3, NF A35-551

25CrMo4 (1.7218), 18 cd4

BS EN 10083-3 BS 970 Ntu 1

25CrMo4 (1.7218), 708m2 0

TS EN ISO 683-1

18 CrMo4