ASTM A666 vs ASTM A240 tus qauv: sib txawv

ASTM A240 yog dab tsi?
ASTM A240 yog tus qauv tshwj xeeb rau chromium thiab chromium-nickel stainless hlau phaj, ntawv, thiab sawb, npog ntau qib siv rau cov hlab ntsha siab thiab kev siv dav dav. Nws txhais tau hais tias yuav tsum muaj cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab lwm yam tshwj xeeb los xyuas kom meej qhov sib xws thiab zoo rau cov khoom xws li cov qib 304, 316, thiab 321 stainless hlau. Cov qauv no yog siv dav hauv kev lag luam xws li kev ua zaub mov, kev tsim kho, thiab petrochemicals.

 

ASTM A666 yog dab tsi?
ASTM A666 yog ib qho kev qhia tshwj xeeb rau annealed lossis txias -ua haujlwm austenitic stainless hlau ntawv, sawb, phaj, thiab tiaj tiaj. Nws teev cov kev cai rau cov hlau cov tshuaj muaj pes tsawg leeg thiab txhua yam khoom, xws li tensile zog, yield zog, hardness, thiab elongation. Cov qauv no yog siv rau ntau yam kev siv, suav nrog cov qauv, lub nkoj siab, sib nqus, cryogenic, thiab cua sov- tawm tsam lub hom phiaj.

 

Dab tsi yog qhov txawv ntawm ASTM A240 thiab A666?

ASTM A240 npog ntau yam ntawm stainless hlau daim hlau, nplooj ntawv, thiab strips rau kev siv dav dav thiab siab lub nkoj, thaum ASTM A666 tshwj xeeb npog austenitic stainless hlau hauv daim ntawv, sawb, phaj, lossis cov ntaub ntawv tiaj tus rau cov ntawv thov kom muaj zog ntau dua. Qhov sib txawv tseem ceeb yog A666 yog tsim los rau cov qauv tsim muaj zog dua, qhov A240 yog tus qauv dav dav rau kev xeb thiab kub tsis kam hauv cov hlab ntsha.

Feature	ASTM A 240 Cov Lus Qhia	ASTM A666
Daim ntawv thov tseem ceeb	Kev siv dav dav thiab lub nkoj siab	Cov kev siv zog ntau dua
Cov ntaub ntawv npog	Ntau yam ntawm stainless hlau alloys, xws li ferritic, austenitic, martensitic, thiab duplex	Austenitic stainless hlau nkaus xwb
Cov Khoom Muag Khoom	Phaj, ntawv, thiab strips	Daim ntawv, sawb, phaj, los yog xaim tiaj tus
Qhov yuav tsum tau muaj	Npog cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab	Tsom ntsoov rau kev kho cua sov thiab kev ua kom txias kom ua tiav cov txheej txheem muaj zog dua

 

Dab tsi yog qhov txawv ntawm ASTM A240 thiab ASTM A167?
Qhov sib txawv tseem ceeb ntawm ASTM A240 thiab ASTM A167 yog cov tshuaj muaj pes tsawg leeg. ASTM A240 steel muaj chromium, molybdenum, thiab npib tsib xee, thaum ASTM A167 tsuas muaj chromium thiab molybdenum. Qhov no txhais tau tias ASTM A240 steel yuav tiv thaiv corrosion zoo dua ASTM A167.

 

Lub thickness kam rau ua ntawm ASTM A240 yog dab tsi?

Thickness kam rau ua nyob rau hauv ASTM A240 sib txawv nyob ntawm seb daim ntawv thickness, dav, thiab manufacturing txheej txheem (kub-kub los yog txias- dov). Tolerances yog teev nyob rau hauv daim ntawv ntawm ntau yam; Piv txwv li, kam rau ua ntawm ± 0.002 ntiv tes yog muaj rau qee qhov ntau thiab tsawg, lossis +0.050 ntiv tes / -0.010 ntiv tes rau qee qhov dav thiab tuab.

Rau Stainless Hlau Phaj thiab Cov Ntawv (Kub-Rolled / Cold-Rolled)

Nominal Thickness (hli)	Thickness kam rau ua (mm)
Mus txog 6 mm	±0.15
Ntau tshaj 6mm mus rau 13mm	±0.20
Tshaj 13mm mus rau 25mm	±0.25
Tshaj 25mm mus rau 50mm	±0.35
Tshaj 50mm mus rau 75mm	±0.45
Tshaj 75mm mus rau 100mm	±0.55

Faj seeb: Txias- cov ntawv yob feem ntau muaj kev tiv thaiv nruj dua li kub- dov. Piv txwv li, 2B ua tiav txias- cov ntawv dov tej zaum yuav muaj ± 0.10 hli kam rau cov ntsuas nyias (<3 mm).

 

Yog tias koj xav paub ntau ntxiv thiab cov nqi ntawm cov khoom, thov hu rau peb hauv lub sijhawm!Nyem hauv qab no rau ASTM A240 cov ntsiab lus.

ASTM A240 Txuj Specification.pdf