ASTM A202 Qib B (Cr-Mn-Si) thiab ASTM A203 Qib B (Ni-alloyed) yog cov hlab ntsha siab sib txawv ntawm cov hlau sib txawv, feem ntau A202's chromium-manganese-silicon20 cov ntsiab lus zoo dua rau kev siv A202 cov ntsiab lus low-kub toughness, ob qho tib si tsim rau boilers thiab siab hlab ntsha tab sis ua hauj lwm txawv kev pab cuam, nrog A202 rau siab dua temps thiab A203 rau txias dua daim ntaub ntawv.
A202 Qib BTshuaj muaj pes tsawg leeg
|
A202 Qib BTshuaj muaj pes tsawg leeg |
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|
Qib |
Cov ntsiab lus Max (%) |
||||
|
C |
Si |
Mn |
P |
S |
|
|
A202 Qib B |
0.25 |
0.54-0.90 |
0.97-1.52 |
0.035 |
0.035 |
A203 Qib BTshuaj muaj pes tsawg leeg
|
A203 Qib BTshuaj muaj pes tsawg leeg |
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|
Qib |
Cov ntsiab lus Max (%) |
||||
|
C |
Si |
Mn |
P |
S |
|
|
A203 Qib B |
0.17 |
0.13-0.45 |
0.78-0.88 |
0.035 |
0.035 |
A202 Qib BMechanical Property
|
Qib |
|
A202 Qib BMechanical Property |
||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
A202 Qib B |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
6-50 |
325 |
587-760 |
18% |
|
|
50-100 |
325 |
587-760 |
15% |
|
A203 Qib BMechanical Property
|
Mechanical Property ntawm A203 Qib B steel phaj |
A203 Qib B |
|
Tensile zog, kis [MPa] |
70-90[485-620] |
|
Yield zog, min, kis [MPa] |
40 [275] |
|
Elongation hauv 8 nti [200 mm], min, % |
17 |
|
Elongation hauv 2 nti [50 mm], min, % |
21 |
ASTM A202 Qib B
Hom: Chromium-Manganese-Silicon (Cr-Mn-Si) alloy steel.
Daim ntawv thov: Siv rau welded boilers thiab cov hlab ntsha siab, feem ntau rau kev pab kub siab dua.
Khoom: Muab cov khoom zoo weldability thiab txhua yam muaj zog, feem ntau muab cov khoom qub los yog kev ntxhov siab -relieved.
ASTM A203 Qib B
Hom: Nickel- alloyed steel, tshwj xeeb tshaj yog rau qis- qhov kub thiab txias.
Daim ntawv thov: Fabricated rau qis -kub siab cov hlab ntsha hauv kev lag luam xws li roj, roj, thiab lub zog.
Khoom: Txhim kho qhov tawv nqaij ntawm qhov kub thiab txias vim nws cov ntsiab lus npib tsib xee, yuav tsum tau tua thiab ua kom zoo- kev coj noj coj ua.
Qhov txawv tseem ceeb
Cov ntsiab lus ntawm Alloy: A202 siv Cr-Mn-Si, thaum A203 siv Nickel rau cov khoom qis-temp.
Kev Pabcuam Kub: A202 ntau dua rau qhov dav dav / siab dua; A203 tshwj xeeb tshaj yog rau qhov kub thiab txias.
Standard: Ob leeg poob raws li ASTM cov qauv rau cov phaj siab tab sis yog cov khoom sib txawv.
