Qhov sib txawv tseem ceeb ntawm S690Q thiab S690QL steel daim hlau yog nyob rau hauv lawv qhov kev lees paub qhov kev ntsuas qhov ntsuas kub: S690Q yuav tsum muaj zog ntawm -20 degree, thaum S690QL xav kom nws qis dua qhov kub ntawm -40 degree, qhia tias S690QL yog qhov zoo dua rau cov cua txias, ob qho tib si yog high-strength tempered thiab tsawg zog. yield zog.
Tshuaj muaj pes tsawg leeg
|
S690Q Tshuaj muaj pes tsawg leeg |
||||||||
|
Qib |
Cov ntsiab lus Max (%) |
|||||||
|
C |
Si |
Mn |
P |
S |
N |
B |
Cr |
|
|
S690 Q |
0.20 |
0.80 |
1.70 |
0.020-0.025 |
0.010-0.015 |
0.015 |
0.005 |
1.50 |
|
Cu |
Mo |
Nb |
Ni |
Ti |
V |
Zr |
|
|
|
0.50 |
0.70 |
0.06 |
2.0 |
0.05 |
0.12 |
0.15 |
|
|
Carbon sib npaug: Ceq=【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
s690 qwTshuaj muaj pes tsawg leeg
| C | Si | Mn | P | S | B | Cr | Cu | Mo | N | Nb | Ni | Ti | V | Zr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.20 | 0.80 | 1.70 | 0.020 | 0.010 | 0.005 | 1.50 | 0.50 | 0.70 | 0.015 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 |
Mechanical Property
|
Qib |
S690Q Mechanical Property |
|||||
|
Thickness |
Yield |
Tensile |
Elongation |
Min Impact Zog
|
||
|
S690 Q |
mm |
Min Mpa |
Mpa |
Tsawg% |
-20 |
30J |
|
3<> |
690 |
770-940 |
14 |
-20 |
30J |
|
|
50<> |
650 |
760-930 |
14 |
-20 |
30J |
|
|
100<> |
630 |
710-900 |
14 |
-20 |
30J |
|
s690 qwMechanical Property
| Phaj thickness mm | Yield zog Reh (MPA) | Tensile zog Rm (MPA) | Elongation A5% yam tsawg kawg nkaus | Impact zog J, yam tsawg kawg nkaus |
|---|---|---|---|---|
| 3mm txog 50mm | 690 | 770 – 940 | 14 | 30 @ -40º C |
| 50mm txog 100mm | 650 | 760 – 930 | 14 | 30 @ -40º C |
| 100mm txog 150mm | 630 | 710 – 900 | 14 | 30 @ -40º C |
Qhov tseem ceeb Distinctions:
S690Q: Siab- lub zog cov qauv hlau nrog qhov tsawg kawg nkaus lub zog ntawm 690 MPa, lav qhov cuam tshuam toughness ntawm -20℃.
S690QL: Tib lub zog (690 MPa) tab sis nrog kev txhim kho qis - qhov kub thiab txias kev ua haujlwm, lav qhov cuam tshuam toughness ntawm -40℃.
Cov yam ntxwv tseem ceeb (ob qib):
Lub zog: Yam tsawg kawg nkaus lub zog (ReH) ntawm 690 MPa rau cov tuab tuab.
Kev kho cua sov: Ob qho tib si raug quenching thiab tempering (Q + T).
Daim ntaub ntawv: Siv nyob rau hauv cov tsheb hnyav, cranes, txuas hniav, thiab lwm yam thauj khoom -cov kabmob uas lub teeb yuag thiab lub zog tseem ceeb heev.
Hauv cov ntsiab lus, 'L' hauv S690QL qhia txog kev tsim kho kom haum rau qhov chaw txias dua piv rau S690Q.
