ASTM A537 Chav Kawm 1,2,3 Boiler thiab Pressure nkoj steel phaj

ASTM A537 specification yog tus qauv Specification rau Pressure Vessel Phaj, Thaum tshav kub kub kho, Carbon-Manganese-Silicon Steel siv nyob rau hauv daim ntawv thov ntawm fusion welded siab hlab ntsha thiab cov qauv. Cov ntawv thov ib txwm yog cov hlab ntsha siab tsim los rau nruab nrab thiab qis-kub qhov kev pabcuam uas yuav tsum tau ua kom muaj kev sib tw zoo heev nrog rau API 650 thiab API 620 cia tso tsheb hlau luam. Cov khoom siv hauv chav kawm 1 yog muaj raws li Normalized thiab Chav Kawm 2 yog muaj raws li Quenched & Tempered daim hlau.

ASTM A537 Chav Kawm 3 (A537CL3)

KHOOM	C	Mn	Si	P≤	S≤
ASTM A537 Chav Kawm 3 (A537CL3)	0.24	0.13-0.55	0.92-1.72	0.035	0.035

KHOOM	Tensile zog (MPa)	Yield zog (MPa) MIN	% Elongation MIN
ASTM A537 Chav Kawm 3 (A537CL3)	485-690	275-380	20

ASTM A537 Chav Kawm 2 (A537CL2)

KHOOM	C	Mn	Si	P≤	S≤
ASTM A537 Chav Kawm 2 (A537CL2)	0.24	0.13-0.55	0.92-1.72	0.035	0.035

KHOOM	Tensile zog (MPa)	Yield zog (MPa) MIN	% Elongation MIN
ASTM A537 Chav Kawm 2 (A537CL2)	485-690	315-415	20

ASTM A537 Chav Kawm 1 (A537CL1)

KHOOM	C	Mn	Si	P≤	S≤
ASTM A537 Chav Kawm 1 (A537CL1)	0.24	0.13-0.55	0.92-1.72	0.035	0.035

KHOOM	Tensile zog (MPa)	Yield zog (MPa) MIN	% Elongation MIN
ASTM A537 Chav Kawm 1 (A537CL1)	450-585	310	18

Cov ntaub ntawv siv

ASTM Cov Qauv:

A20/A20M: Specification rau General Requirements for Pressure Vessel Plates
A435 / A435: Rau Ncaj-Beam Ultrasonic Examination ntawm Hlau Phaj
A577 / A577M: Rau Ultrasonic Angle-Beam Examination ntawm Steel Phaj
A578 / A578M: ​​Rau Ncaj-Beam Ultrasonic Examination ntawm Rolled Steel Phaj rau Kev Siv Tshwj Xeeb

Manufacturing Notes:

Hlau Phaj raws li ASTM A537 Chav Kawm 1, 2 thiab 3 yuav tsum raug tua cov hlau thiab ua raws li qhov zoo ntawm austenitic grain loj yuav tsum tau ntawm Specification A20 / A20M.

Txoj kev kho cua sov:

Txhua daim hlau raws li ASTM A537 yuav tsum tau kho cua sov raws li hauv qab no:
ASTM A537 Class 1 daim hlau yuav tsum normalized.
Chav Kawm 2 thiab Chav Kawm 3 yuav tsum tau quenched thiab tempered. Tempering kub rau Class 2 daim hlau yuav tsum tsis pub tsawg tshaj 1100 ° F [595 ° C] thiab tsis tsawg tshaj 1150 ° F [620 ° C] rau Class 3 daim hlau.