S275M thiab S275ML yog European tus qauv (EN 10025-4) zoo- cov khoom siv hlau, ob qho tib si weldable thiab thermomechanically dov, tab sis txawv ntawm lawv qhov kub thiab txias cuam tshuam toughness: S275M yuav tsum tau 40 Joules ntawm -20℃5, thaum S275℃yuav tsum tau txias. ML haum rau qhov chaw txias dua, txawm tias ob qho tib si muab 275 MPa yam tsawg kawg nkaus yield zog thiab siv nyob rau hauv kev tsim kho thiab machinery.
S275M vs S275ML - Ua kom tiav qis-Tsuas sib piv
|
Khoom |
S275M |
S275ML |
Tus yeej rau Low-Temp Projects |
|---|---|---|---|
|
Txuj |
TS EN 10025-4 |
TS EN 10025-4 |
- |
|
Impact Test Temperature |
-20 degree |
-50 degree |
S275ML |
|
Yam tsawg kawg nkaus KV (longitudinal) |
Ntau dua lossis sib npaug li 40 J |
Ntau dua lossis sib npaug li 27 J |
S275ML(ntau yam kev nyab xeeb hauv qab -20 degree) |
|
Hom KV (Gangsteel) |
80-200 J ntawm -20 degree |
100-250 J ntawm -50 degree |
S275ML |
|
Yield zog ReH (MPa) |
275 → 215-225 (los ntawm thickness) |
Ib yam |
Khi |
|
Tensile zog Rm (MPa) |
370–530 |
Ib yam |
Khi |
|
Elongation A5 (%) |
Ntau dua lossis sib npaug li 24 |
Ib yam |
Khi |
|
CEV max |
0.38 |
Ib yam |
Khi |
|
Preheat -Vuam dawb (mm) |
Txog li 100 |
Txog li 100 |
Khi |
|
Nqe (Lub Kaum Ob Hlis 2025) |
Lub hauv paus |
+50–80 USD/ton |
S275M pheej yig dua, S275ML tus nqi zoo dua thaum txias |
|
Kev Ua Lag Luam (Cold -Cov Haujlwm Hauv Cheeb Tsam) |
30–40 % |
60–70 % |
S275MLdominates |
Chemical Composition - Zoo tib yam rau ob qib
|
Element |
C |
Si |
Mn |
P |
S |
Nb |
V |
Al min |
Ti |
Cr |
Ni |
Mo |
Cu |
N |
CEV max |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
S275M / S275ML |
0.14 |
0.50 |
1.50 |
0.030 |
0.025 |
0.05 |
0.10 |
0.020 |
0.05 |
0.30 |
0.30 |
0.10 |
0.55 |
0.015 |
0.38 |
Mechanical Properties – Zoo tib yam Tsuas yog qhov kub thiab txias
|
Thickness (hli) |
Hwj chim min (MPa) |
Rm (MPa) |
A5 min (%) |
KV min (J) ntawm qhov ntsuas kub |
|---|---|---|---|---|
|
Tsawg dua los yog sib npaug li 16 |
275 |
370–530 |
24 |
S275M: 40 J @ -20℃S275ML: 27 J @ -50 degree |
|
16<> |
265 |
370–530 |
24 |
ib yam |
|
40<> |
255 |
370–530 |
24 |
ib yam |
|
63<> |
245 |
370–530 |
24 |
ib yam |
|
80<> |
235 |
370–530 |
24 |
ib yam |
|
100<> |
235 |
360–520 |
24 |
ib yam |
|
120<> |
225 |
360–520 |
24 |
ib yam |
|
150<> |
215–225* |
360–520 |
24 |
ib yam |
Daim ntawv thov
S275M yog qhov zoo rau kev siv dav dav, thaum S275ML raug xaiv rau cov qauv xav tau kev ua haujlwm zoo dua hauv cov xwm txheej txias heev, xws li qee qhov kev tsim kho lossis cov chaw sab nrauv.
Qhov txawv tseem ceeb
Impact Test Temp: 'L' qhia txog qhov ntsuas kub qis dua, txhais tau tias S275ML ua tau zoo dua thaum txias txias.
S275M: Ntau dua lossis sib npaug rau 40J ntawm -20℃(ntev).
S275ML: Ntau dua lossis sib npaug rau 27J ntawm -50℃(transverse / longitudinal).
Cov ntawv thov: S275M yog qhov zoo rau kev siv dav dav, thaum S275ML raug xaiv rau cov qauv xav tau kev ua tau zoo dua hauv cov xwm txheej txias heev, xws li qee qhov kev tsim kho lossis sab ntug dej hiav txwv.
Zoo sib xws (S275M & S275ML)
Lub zog: Ob leeg muaj qhov tsawg kawg nkaus lub zog ntawm 275 MPa (N / mm²) thiab tensile lub zog nyob ib ncig ntawm 400-530 MPa.
Kev tsim khoom: Ob leeg yog tsim los ntawm Thermomechanical Controlled Processing (TMCP) rau cov qauv zoo, txhim kho weldability thiab toughness.
Weldability: Zoo heev, nrog qis carbon sib npaug (CEV), feem ntau yuav tsum tsis muaj preheat rau thicknesses txog 100 hli.
