SM490A thiab SM490B yog Nyij Pooj (JIS G3106) cov qauv steel qib nrog tib yam tsawg kawg nkaus tensile lub zog (490 MPa) tab sis txawv ntawm lawv cov kev xav tau toughness, tshwj xeeb tshaj yog kev ntsuam xyuas kev cuam tshuam: SM490B yuav tsum muaj kev ntsuas cuam tshuam (xws li, 27J ntawm 0 degree), thaum SM490 muaj qhov kev ntsuas zoo dua, tsis muaj kev cuam tshuam rau B whereas A muaj qhov zoo dav weldability thiab lub zog ntawm tus nqi qis dua.
Tshuaj muaj pes tsawg leeg
|
SWB 490ATshuaj muaj pes tsawg leeg |
||||||
|
Qib |
Cov ntsiab lus Max (%) |
|||||
|
C |
Si |
Mn |
P |
S |
Cu (min) |
|
|
SWB 490A |
0.20-0.22 |
0.55 |
1.65 |
0.035 |
0.035 |
- |
|
SWB 490BTshuaj muaj pes tsawg leeg |
||||||
|
Qib |
Cov ntsiab lus Max (%) |
|||||
|
C |
Si |
Mn |
P |
S |
Cu (min) |
|
|
SWB 490B |
0.18-0.20 |
0.55 |
1.65 |
0.035 |
0.035 |
- |
Mechanical Property
|
Qib |
SWB 490AMechanical Property |
|||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
SWB 490A |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
t Tsawg dua los yog sib npaug rau 16 |
325 |
490-610 |
17 |
|
|
16<> |
295-315 |
490-610 |
23 |
|
|
Qib |
SWB 490BMechanical Property |
|||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
SWB 490B |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
t Tsawg dua los yog sib npaug rau 16 |
325 |
490-610 |
17 |
|
|
16<> |
295-315 |
490-610 |
23 |
|
Qhov txawv tseem ceeb
Impact Toughness: SM490B xav tau qis- qhov kub thiab txias cuam tshuam lub zog nqus (xws li 27 Joules ntawm 0 degree), ua kom muaj kev ua tau zoo dua hauv cov mob khaub thuas lossis thaj tsam seismic, thaum SM490A feem ntau tsis muaj qhov yuav tsum tau ua.
Daim ntawv thov: SM490A yog rau kev tsim kho dav dav xav tau lub zog thiab weldability; SM490B muaj kev ua kom muaj zog ntxiv rau kev siv ntau dua xws li txuas hniav, nkoj, lossis cov qauv hauv cov huab cua txias.
Tus nqi / Muaj: SM490A feem ntau yooj yim dua thiab raug nqi tsawg dua qib SM490B nyuaj.
