420 Stainless Steel Sheets

420 STAINLESS STEEL

GNEE steel now includes Alloy 420 (UNS S42000) in sheet, sheet coil, plate, round bar, processed flat bar and tubular products.

Attributes of 420 Stainless

Heat Treatment

Annealing – Grade 420 stainless steels can be heated at temperatures from 840 to 900°C, followed by slow furnace cooling at 600°C and then air-cooling.

Process Anneal – Grade 420 can be annealed at 735 to 785°C and air-cooled.

Hardening – This process involves heating grade 420 steels at 980 to 1035°C, followed by air or oil quenching. Oil quenching is usually preferred for heavy metal sections. Tempering is performed at 150 to 370°C to achieve high hardness and good mechanical properties. Grade 420 should not be tempered between 425 and 600°C

Foil

Thick.	Thick. Tolerance	Fabrication	Flatness Tolerance	Magnetic Properties
0.01"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic
0.012"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic

Sheets

Thick.	Thick. Tolerance	Fabrication	Flatness Tolerance	Magnetic Properties	6" × 48"
0.015"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	$197.95
0.018"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	207.95
0.02"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	218.21
0.025"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	228.97
0.032"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	234.62
0.039"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	236.15
0.058"	-0.002" to 0.002"	Cold Worked	0.010" per in.	Magnetic	252.05
0.125"	-0.003" to 0.003"	Cold Worked	0.010" per in.	Magnetic	__

Corrosion

420 provides full corrosion resistance only in the hardened or hardened and stress relieved conditions. In these conditions, its corrosion resistance is similar to Type 410. Type 420 resists corrosion by the atmosphere, fresh water, mine water, steam, carbonic acid, crude oil, gasoline, perspiration, alcohol, ammonia, mercury, sterilizing solutions, soaps and other similar corrosive media.

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