Q235 Q235A Q235B Q235C Q235D
Q235 steel yog ib qho yooj yim carbon structural steel uas yog dav siv nyob rau hauv Tuam Tshoj, Q235 khoom nyob rau hauv Suav standard GB / T 700 muab faib ua 4 qib zoo: Q235A, Q235B, Q235C thiab Q235D; Qhov ceev ntawm cov hlau no yog 7.85 g / cm3, tensile zog yog 370-500 MPa; yield zog yog 235 MPa (cov ntaub ntawv yog rau steel bar lossis steel phaj txoj kab uas hla Tsawg dua los yog sib npaug rau 16mm). Txij li nws yog cov hlau me me, nws yog siv ncaj qha yam tsis muaj kev kho cua sov.
Lub ntsiab lus thiab lub npe
"Q" yog thawj tsab ntawv ntawm Suav spelling ntawm "Qu Fu Dian", uas txhais tau tias Yield Point.
"235" yog hais txog qhov tsawg kawg nkaus yield zog 235 MPa kuaj nrog steel txoj kab uas hla Tsawg dua los yog sib npaug rau 16 hli.
Nta thiab Daim Ntawv Thov
Q235 steel muaj zoo plasticity, toughness thiab weld muaj peev xwm, nrog rau ib tug tej yam lub zog, zoo txias dabtsi yog khoov kev ua tau zoo. Q235 cov khoom siv feem ntau yog dov rau hauv cov hlua hlau lossis cov hlau puag ncig, square steel, tiaj tus hlau, lub kaum sab xis steel, kuv nqaj, channel steel, lwm ntu thiab steel phaj. Cov khoom no tau siv dav hauv kev tsim kho thiab engineering welded cov qauv, ua cov hlau tuav lossis tsim cov tsev tsim khoom, cov khoom siv hluav taws xob sib kis tau zoo, txuas hniav, tsheb, boilers, ntim, thiab lwm yam, thiab tseem siv los ua ib qho khoom siv nrog kev xav tau tsawg dua xws li tsawg zog rods, txuas rods, screws, ceev, ferrules, brackets, thiab sawv, thiab lwm yam.
Q235A, Q235B, Q235C, Q235D Steel Chemical Composition
Cov lus hauv qab no teev cov khoom siv tshuaj lom neeg Q235 raws li kev ntsuas kub.
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Chemical Composition (kub tsom xam), feem pua, Tsawg dua los yog sib npaug |
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Qib Steel |
Qib Qib |
C |
Si |
Mn |
P |
S |
Txoj Kev Deoxidation |
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Q235 |
Q235A |
0.22 |
0.35 |
1.4 |
0.045 |
0.05 |
Rimmed / Tua |
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Q235B |
0.2 |
0.35 |
1.4 |
0.045 |
0.045 |
Rimmed / Tua |
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Q235C |
0.17 |
0.35 |
1.4 |
0.04 |
0.04 |
Tua |
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Q235D |
0.17 |
0.35 |
1.4 |
0.035 |
0.035 |
Exceptionally tua |
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Q235 Hlau Khoom
Cov npe hauv qab no suav nrog Q235 steel cov khoom suav nrog lub cev thiab cov khoom siv kho tshuab.
Lub cev muaj zog
Nco tseg:
· 10-6·K-1 = 10-6/K
· 1 Ω·mm²/m=1 μΩ·m
· 1 g/cm3=1 kg/dm3=1000 kg/m3
· 1 GPa=1 kN/mm2
· 1 MPa=1 N/mm2
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Lub cev muaj zog |
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Qhov ceev, g / cm3 |
7.85 |
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Melting point, degree |
ib 1493 |
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Lub peev xwm kub tshwj xeeb, J / (Kg·K) |
470 ntawm 20 degree |
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Hluav taws xob tiv taus, μΩ·m |
txog 0,15 (20 degree) |
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Elastic Modulus, GPa (kN/mm2) |
200 |
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Thermal conductivity, (W / m · K) |
53-49 (0-100 degree) |
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Coefficient ntawm thermal expansion, (10-6/K) |
11 3-11.6 (20 degree) |
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Young tus qauv, GPa (kN / mm2) |
200 |
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Poisson tus ratio |
0.24-0.28 |
Mechanical Properties
Yield zog thiab tensile zog yog teev nyob rau hauv cov lus hauv qab no.
1 MPa=1 N/mm2
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Yield zog (MPa, Ntau dua lossis sib npaug); Thickness los yog Dia. (d) mm |
Tensile zog (MPa) |
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Qib Steel |
Zoo |
d Tsawg dua los yog sib npaug rau 16 |
16< d ≤40 |
40< d ≤100 |
100< d ≤150 |
150< d ≤200 |
d Tsawg dua lossis sib npaug li 100 |
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Q235 |
Q235A |
235 |
225 |
215 |
195 |
185 |
370-500 |
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Q235B |
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Q235C |
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Q235D |
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Tsawg kawg Elongation
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Elongation (Ntau dua lossis sib npaug rau feem pua); Thickness los yog Dia. (d) mm |
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Qib Steel |
d Tsawg dua lossis sib npaug li 40 |
40< d ≤60 |
60< d ≤100 |
100< d ≤150 |
150< d ≤200 |
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Q235 |
26 |
25 |
24 |
22 |
21 |
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Charpy impact (V notch) |
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Qib Steel |
Zoo |
Temp. degree |
Lub zog cuam tshuam (ntev, Ntau dua lossis sib npaug rau J) |
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Q235 |
Q235A |
– |
– |
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Q235B |
20 |
27 |
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Q235C |
0 |
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Q235D |
-20 |
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Bending Test Cov txiaj ntsig ntawm Q235 Khoom
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Txias Bending Test 180 degree (B=2a) |
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Qib |
Qauv Orientation |
Steel Dia. (d) ntawm Curve Center |
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d Tsawg dua lossis sib npaug li 60mm |
60 |
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Q235 |
Ntsug |
a |
2a |
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Kab rov tav |
1.5a |
2.5a |
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Q235 steel sib npaug
S235JRG2 thiab S235J2G4 yog cov qauv qub nyob rau hauv EN 10025: 1993, S235JRG2 yog hloov los ntawm lub npe tshiab S235JR (1.0038), thiab S235J2G4 hloov los ntawm S235J2 (1.0117) nyob rau hauv EN {{1.
Tej zaum koj yuav txaus siab rau Q235 vs A36, SS400, S235JR & E250 Steel;
Q235 vs Q195, Q215 thiab Q275 Steel
Q235 cov khoom sib npaug rau ASTM, ISO, European EN (German DIN EN, British BS EN, Fabkis NF EN ...), Japanese JIS tus qauv.
Lus Cim: Q235 Is Nrias teb sib npaug yog E250 hauv Indian tus qauv IS 2062.
