ASTM A242 steel hlau

ASTM A242 specification yog tus qauv specification rau high-strength low- alloy structural steel rau structural cov tswv cuab uas qhov hnyav txuag thiab atmospheric corrosion kuj tseem ceeb. Cov cuab yeej cuab tam yuav tsum tau teev tseg los ntawm hom khoom (phaj thiab tuav, thiab cov qauv duab) thiab los ntawm tuab.

ASTM A242 steel muaj atmospheric corrosion kuj
Cov hlau phaj raws li ASTM A242 tus qauv kuj hu ua huab cua hlau phaj, xa mus rau ib nrab tua lossis tag nrho cov hlau tua. Nws muaj qhov zoo atmospheric corrosion kuj yog li cov hlau tuaj yeem siv rau hauv ntau qhov chaw ua haujlwm.

ASTM A242 weathering steel yog qhov zoo dua li cov pa roj carbon steel nrog lossis tsis muaj tooj liab ntxiv.

Mechanical zog A242:
Tensile:
70 ksi min (3/4 thiab qis dua), 67 ksi min (3//4-1.5) 63 ksi min (dhau 1.5-4)
Yield:
50 ksi min (3/4 thiab qis dua), 46 ksi min (3//4-1.5) 42 ksi min (dhau 1.5-4)
Elongation:
16% min hauv 8 "19% min hauv 2" (rau cov phaj dav dua 24")

Chemical Composition Rau Corten Steel ASTM A242 Hom 1 Phaj & Sheet

	Corten - A	ASTM 588 Qib A	ASTM 242 HOM-1	SIB 41-97
Carbon, Max	0.12	0.19	0.15	0.10
Manganese	0.20-50	0.80-1.25	1.00	0.25-0.45
Phosphorus	0.07-0.15	0.04	0.15	0.07-0.11
Sulphur, max	0.030	0.05	0.05	0.030
Silicon	0.25-0.75	0.30-0.65	0.25-0.40	0.28-0.72
Nickel, max	0.65	0.40	-	0.20-0.49
Chromium	0.50-1.25	0.40-065	-	0.30-0.50
Molybdenum, max	-	-	-	-
Tooj	0.25-0.55	0.25-0.40	0.20 min	0.30-0.39
Vanadium	-	0.02-0.10	-	0.050
Aluminium	-	…	-	0.030

Cov yam ntxwv ntawm corten steel ASTM A242 Hom 1 daim hlau & Cov Ntawv

	Tensile zog	Min. Yield Point	Elongation
CORTEN A	[470 - 630 MPa]	[355 MPa]	20% min
ASTM 588 GR. A	[485 MPa]	[345 MPa]	21% min
ASTM 242 HOM-1	[480 MPa]	[345 MPa]	16% min
SIB 41-97	[480 MPa]	[340 MPa]	21% min