A 204 GR B specification npog molybdenum alloy daim hlau, uas yog tshwj xeeb tshaj yog haum rau vuam boilers thiab ntau lwm yam siab hlab ntsha.Astm A204 Qib B steel daim hlau yog siv nyob rau hauv high kub ib puag ncig thiab muaj siab yield thiab tensile zog. Cov ntsiab lus carbon ntau dua ntawm cov khoom siv no piv rau lwm cov phaj boiler yog qhov laj thawj tseem ceeb rau nws lub zog siab, hardness thiab toughness.
A204 Qib B molybdenum steel daim hlau yog dav siv hauv kev lag luam xws li roj thiab roj. Lawv kuj tuaj yeem pom nyob rau hauv cov khoom siv tshuaj lom neeg.ASTM A204 Qib B alloy steel daim hlau yog cov weldable heev thiab tuaj yeem welded siv cov txheej txheem txheem. Lawv muaj nyob rau hauv cov duab sib txawv, qhov ntau thiab tsawg, thiab ASTM A204 steel daim hlau kuj tuaj yeem kho raws li cov neeg siv khoom xav tau. Zoo siab A204 Qib B Siab Vessel Steel Phaj tuaj yeem siv rau cov khoom siv hluav taws xob, boilers, khoom siv ua liaj ua teb thiab lwm yam.
Alloy Steel A204 GR.B Phaj Chemical Composition:
| Qib | Chemical Composition (%) | ||||
| P | Mn Ntau dua lossis sib npaug | C | Si | S | |
| ASTM A204 Qib B (A204GRB) | 0.035 | 0.98 | 0.20 | 0.13-0.45 | 0.035 |
SA 204 GR B Plate Mechanical Properties:
|
Mechanical Property |
A204 Qib B |
|---|---|
|
[MPa] Tensile zog, kis |
70-90 [485-620] |
|
min, % Elongation hauv 2 nti [50 mm] |
21 |
|
[MPa] Yield zog, min, kis |
40 [275] |
|
min, % Elongation hauv 8 nti [200 mm] |
17 |
