ASTM A242 steel

De  ASTM A242 Specificatio est norma specificatio  pro magno robore structurae admixto ferro membrorum structuralium ubi pondus peculi et resistentia atmosphaerica corrosio momenti sunt. Requisita mechanica proprietatis genus ab  producto (laminae et vectibus et figurarum structurarum) specificatae sunt et crassitudine.

ASTM A242 ferrum habet resistentiam atmosphaerici corrosionis
Lamina ferrea sub vexillo ASTM A242 etiam lamina tempestas aerea appellata ad semi-occisum vel plene caesum ferrum. Habet repugnantiam atmosphaericam corrosionis, unde ferrum in multa operando ambitus adhiberi potest.

ASTM A242 Tempestas chalybis substantialiter melior est quam chalybe carbonis structuralis cum vel sine aere addito -in.

Mechanica proprietates a242;
Tensile:
70 ksi min (3/4 et infra), 67 ksi min (3/4-1.5) 63 ksi min (over 1.5-4)
Cede:
50 ksi min (3/4 et infra), 46 ksi min (3/4-1.5) 42 ksi min (supra 1.5-4)
Prolongatio:
XVI% min in VIII "XIX% min in II" (lamellae latior quam XXIV")

Chemical Composition For Corten Steel ASTM A242 Type 1 Plate & Sheet

	Corten - A	ASTM 588 Gradus A	ASTM 242 FORMA -1	IRSM 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
Pii	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	-	-	-	-
Copper	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

Mechanica proprietatum ferri cortini ASTM A242 Typus 1 plates & schedae

	Distrahentes fortitudo	Min. Cede Point	Prolongatio
CORTEN A	[470 – 630 MPa].	[355 MPa]	20% min
ASTM 588 GR. A	[485 MPa]	[345 MPa]	21% min
ASTM 242 FORMA -1	[480 MPa]	[345 MPa]	16% min
IRSM 41- 97	[480 MPa]	[340 MPa]	21% min