US 309/309S (UNS S30900/S30908) steel

TYPES 309 AND 309S yog austenitic chromium-nickel stainless steels uas muab kev tiv thaiv corrosion zoo heev thiab kub ua haujlwm ntxiv rau lub zog zoo ntawm chav tsev thiab qhov kub siab. Hom 309S zoo ib yam li Hom 309 tshwj tsis yog cov ntsiab lus carbon tsawg uas txo cov nag lossis daus carbide thiab txhim kho weldability.

Alloy 309 thiab 309S yog qhov paub zoo tshaj plaws rau kev pabcuam kub. Cov hlau no ua haujlwm zoo txog li 2000 ° F, tshwj xeeb tshaj yog tias yuav tsum tau oxidation tsis kam. 309 thiab 310 stainless hlau yog premier kub ua yeeb yam ntawm cov qib stainless muaj nyob rau hauv peb cov Tshuag. High nickel thiab chromium cov ntsiab lus thiab ib co coarse grain qauv ua rau:

• Txhim kho tsis kam rau cyclic oxidation
• Ua kom muaj zog tiv thaiv sulfidation
• Zoo dua kub siab zog
• Txhim kho tsis kam rau intergranular corrosion

309S (UNS S30908) stainless hlau yog qhov tsawg carbon version ntawm cov hlau. Nws yog siv rau kev yooj yim ntawm fabrication.

309H (UNS S30909) yog ib qho kev hloov kho carbon siab tsim los txhim kho kev nkag siab zoo. Nws feem ntau piv txwv li cov nplej loj thiab cov ntsiab lus carbon ntawm lub phaj tuaj yeem ua tau raws li 309S thiab 309H cov cai. Thaum rhuab ntawm 1202 - 1742 ° F (650 - 950 ° C) cov hlau yog raug rau sigma theem nag lossis daus. Ib qho tshuaj annealing kev kho mob ntawm 2012 - 2102 ° F (1100 - 1150 ° C) yuav rov ua kom tawv nqaij. Alloy 309 tuaj yeem ua tau yooj yim welded thiab ua tiav los ntawm cov txheej txheem khw tsim khoom.

Tshuaj muaj pes tsawg leeg

Qib	C	Si	P	S	Cr	Mn	Ni	Fe
309	0.20 max	1.0 max	0.045 max	0.030 max	22.0 - 24.0	2.0 max	12.0 - 15.0	Tseem tshuav
309s ua	0.08 max	1.0 max	0.045 max	0.030 max	22.0 - 24.0	2.0 max	12.0 - 15.0	Tseem tshuav

Mechanical Properties

Qib	Tensile zog (ksi)	0.2% Yield zog (ksi)	Elongation% hauv 2 ntiv tes
309	75	30	40
309s ua	70	25	40

Lub cev muaj zog

	309	309s ua	Kub hauv ° C
Qhov ntom	7.9g/cm 3	8.03g/cm³	Chav
Tshwj xeeb kub	0.12 Kcal/kg C	0.12 Kcal/kg C	22° Nws
Melting Range	1399-1454 ° C	1399-1454 ° C	-
Modulus ntawm Elasticity	200 KN/mm²	200 KN/mm²	22° Nws
Hluav taws xob Resistivity	78 ;cm	78 ;cm	Chav
Coefficient ntawm Expansion	14.9 µm/m°C	14.9 µm/m°C	20-100 °
Thermal conductivity	15.6 W / m -° K	15.6 W / m -° K	20 °

FAQ
Q. Kuv puas tuaj yeem muaj cov qauv txiav txim rau cov khoom siv stainless hlau phaj?
A: Yog lawm, peb txais tos cov qauv txiav txim los kuaj thiab xyuas qhov zoo. Cov qauv sib xyaw ua ke tau txais.

Q. Yuav ua li cas txog lub sijhawm ua haujlwm?
A: Qauv xav tau 3-5 hnub;

Q. Koj puas muaj MOQ txwv rau cov ntawv stainless hlau phaj cov khoom xaj?
A: Tsawg MOQ, 1pcs rau kev kuaj xyuas yog muaj

Q. Koj yuav xa cov khoom li cas thiab yuav siv sijhawm ntev npaum li cas thiaj tuaj txog?
A: Peb feem ntau xa los ntawm DHL, UPS, FedEx lossis TNT. Nws feem ntau yuav siv 3-5 hnub los txog. Lub dav hlau thiab hiav txwv shipping kuj xaiv tau. Rau cov khoom loj, nkoj freight yog nyiam.

Q. Puas yog nws luam kuv lub logo ntawm cov khoom?
A: Yog. OEM thiab ODM muaj rau peb.

Q: Yuav ua li cas kom ntseeg tau qhov zoo?
A: Mill Test Certificate yog muab nrog cov khoom xa tuaj. Yog tias xav tau, Kev Tshuaj Xyuas Thib Peb tau txais