SN490B belongs rau Japanese tus qauv uas tsis muaj alloy high-zog siv steel phaj, SN490B tsis tsuas yog muaj zog heev tab sis kuj muaj ib tug tej yam toughness, hnav tsis kam, qaug zog tsis kam, seismic shock resistance, vuam yooj yim ntawm kev ua, txias molding, hnav-resistant. acid zog, thiab lwm yam., feem ntau yog siv nyob rau hauv landmark vaj tse, chaw ua hauj lwm lub tsev tsim, nuclear fais fab nroj tsuag kev tsim kho, steel siv, Hoobkas tsim, tsim scenic chaw, thiab lwm yam., nyob rau hauv kev tsim kho kev lag luam yog heev ntau yam ntawm kev siv.
Chemical Composition (%):
|
Qib / Khoom siv |
Lub ntsiab |
Composition (Max-A, Min-I) |
|
JIS G 3136 SN490B |
C |
A:0.18 |
|
Mn |
A:1.60 |
|
|
Si |
A:0.55 |
|
|
P |
A:0.030 |
|
|
S |
A:0.015 |
Mechanical Properties (Mpa):
|
Qib / Khoom siv |
Tensile Test |
MPa |
|
JIS G 3136 SN490B |
Tensile zog |
490-610 |
|
Yield zog |
I:325 |
|
|
Elongation |
I:17% |
|
|
Impact Test (yog tias muaj) |
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