STAINLESS HLAU 347

Apr 16, 2020

Hom 347 stainless hlau tau txhim kho me ntsis txhim kho corrosion dua li hom 321 stainless hlau hauv qhov chaw muaj zog oxidizing. Hom 347 yog ruaj khov nrog columbium, nws yog qhov zoo dua rau aqueous thiab tsis kub qhov chaw vim nws qhov ua tau zoo rau kev cuam tshuam nrog kev tua. Ob qho 347 thiab 321 muaj qhov ua tau zoo rau polythionic acid kev nyuab siab corrosion cracking, ntsib hauv cov roj cav. Lub siab kub oxidation tsis kam ntawm 347 yog zoo li 304 stainless hlau. Pab tau rau 1500 ° F.
Feem ntau hauv ntau cov khoom lag luam, cov nplej loj thiab cov ntsiab lus carbon muaj peev xwm ua tau raws li ob qho tib si 347S thiab 347H qhov xav tau. Kev tsim nyog weld txhaws yog AWS ER347 cov xaim hlau thiab E347 them electrodes.

Chemistry

	Cr	N	Cb + Ta	C	Si	Mn	P	S	Fe
MIN	17.0	9.0	Cb 10xc (Cb 8xC)	0.04	-	-		-	-
MAX	19.0	13.0	1.0	0.08	0.75	2.0	0.045	0.03	Sib npaug

Cov Lus Qhia Tshwj Xeeb

AMS 5512,AMS 5646,AMS 5680
ASME SA 240
ASTM A 269,ASTM A 479
ASTM A262 Kev Kawm E
MSRR 5632
PWA 300,PWA F17 LCS
UNS S34700,UNS S34709
W. Nr./EN 1.4550

Cov lus nug

347Coil, 347Plate, 347Round Bar, 347Qhov Khoom, 347Weld Hlau

Cov Kev Lag Luam Muaj Npe

347H, 347 Stainless

Nta

· Zoo nkag dag zog mus txog 1500 ° F

Ua kom zoo corrosion nyob rau hauv daim ntaub ntawv uas qhov kub nruab nrab ntawm 800 ° F thiab 1500 ° F.

Zoo tsis kam mus rau intergranular corrosion nyob rau hauv cov uas muaj welded.

Cov ntawv thov

. Roj Xa Khoom Roj

Units Cov kua catalytic cracking rau lwm (FCC)

· Khoo phom sij

Lub tshuab raj raj ua haujlwm, plhaub, txhawb nqa

· Tshwj xeeb tshaj yog qhov kub tshaj 550 ° F thiab tiv thaiv kom tau sulfidation yog qhov xav tau

Raug rho tawm haujlwm hlab

Ys Cov xa khoom thiab cov thawv ntub dej

· Cov khoom siv hauv thiab ib puag ncig cov tshuaj tiv thaiv (zoo tiv thaiv polythionic acid)

Lub cev nqaij daim tawv

Qhov ceev: 0.286 lb / nti3
Melting Point: 2550 - 2635 ° F

Kub Tiv Thaiv Kub, ° F	70	212	932
Cov Caj Npab * ntawm Kev Ntsuas Sov, hauv / hauv ° F x 10-6	-	9.2	-
Thermal Kev Coj Ua Btu • ft / ft2 • hr • ° F	-	112.5	147.7
Modulus ntawm Elasticity, Dynamic psi x 106	28	-	-

* 70 ° F qhia kom paub qhov kub thiab txias.

Mechanical zog

Yam tsawg kawg nkaus Cov Khoom Qub, ASTM A 240
Raug Khoom Muag Tensile thiab Cov Khoom Uas Tsis Cuam Tshuam

Kub Tiv Thaiv Kub, ° F	68	400	800	1000	1200	1350	1500
Lub Zog Tensile Muaj Zog, ksi	93.3	73.6	69.5	63.5	52.3	39.3	26.4
0.2% Yield Zog, ksi	36.5	36.6	29.7	27.4	24.5	22.8	18.6