ASTM A242 karfe

Ƙayyadaddun  ASTM A242 shine ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun  don ƙaramin tsari mai ƙarfi mai ƙarfi don membobin tsarin inda tanadin nauyi da juriyar lalata yanayi ke da mahimmanci. An ƙayyadadden buƙatun kadarorin injina ta nau'in samfur (faranti da sanduna, da Siffofin tsari) da kauri.

ASTM A242 karfe yana da juriya na lalata yanayi
Farantin karfen da ke ƙarƙashin ma'aunin ASTM A242 kuma ana kiransa farantin ƙarfe na yanayi, ana magana da ƙaramin kashe-kashe ko cikakken kisa. Yana da kyakkyawan juriya na lalata yanayi don haka ana iya amfani da ƙarfe a wurare da yawa na aiki.

ASTM A242 karfen yanayi yana da kyau sosai fiye da na carbon tsarin karfe tare da ko ba tare da ƙara tagulla ba.

Kaddarorin injiniyoyi A242:
Ƙunƙara:
70 ksi min (3/4 da kasa), 67 ksi min (3/4-1.5) 63 ksi min (sama da 1.5-4)
Yawa:
50 ksi min (3/4 da kasa), 46 ksi min (3/4-1.5) 42 ksi min (sama da 1.5-4)
Tsawaitawa:
16% min a cikin 8" 19% a cikin 2" (na faranti fiye da 24")

Abubuwan Kemikal Don Corten Karfe ASTM A242 Nau'in 1 Plate & Sheet

	Corten – A	ASTM 588 Babban darajar A	ASTM 242 TYPE -1	Farashin 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
Sulfur, max	0.030	0.05	0.05	0.030
Siliki	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
Aluminum	-	…	-	0.030

Kayayyakin inji na corten karfe ASTM A242 Nau'in faranti 1 & Sheets

	Ƙarfin Ƙarfi	Min. Matsayin Haɓakawa	Tsawaitawa
CORTIN A	[470 - 630 MPa]	[355MPa]	20% min
ASTM 588 GR. A	[485MPa]	[345MPa]	21% min
ASTM 242 TYPE -1	[480MPa]	[345MPa]	16% min
Farashin 41-97	[480MPa]	[340MPa]	21% min