304 Stainless Steel Sheet, Coil, and Plate - AMS 5511, 5513

Inventory Size Ranges for 304

Type	Thickness	AMS Standards	ASTM	UNS	ASME	Get a Quote
Coil	0.016" - 0.125"	AMS 5511, AMS 5513	ASTM A 240, ASTM A 666	UNS S30400	ASME SA 240	Get a Quote
Sheet	0.016" - 0.125"	AMS 5511, AMS 5513	ASTM A 240, ASTM A 666	UNS S30400	ASME SA 240	Get a Quote
Plate	0.1875" - 2.000"	AMS 5511, AMS 5513	ASTM A 240, ASTM A 666	UNS S30400	ASME SA 240	Get a Quote
Precision Reroll Strip	0.0008" - 0.015"					Get a Quote

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Advanced Inventory Size Ranges for 304

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Characteristics of 304

304 features excellent corrosion resistance, resistance to oxidation, good fabrication qualities, excellent formability, good strength and toughness at cryogenic temperatures, as well as high strength and low weight.  This combination of properties is the reason for the extensive use of this alloy. 

Working with 304

The austenitic stainless steels are heat treated to remove the effects of cold forming or to dissolve precipitated chromium carbides. The surest heat treatment to accomplish both requirements is the solution anneal which is conducted in the 1850°F to 2050°F range (1010°C to 1121°C). Cooling from the anneal temperature should be at sufficiently high rates through 1500-800°F (816°C – 427°C) to avoid reprecipitation of chromium carbides. These materials cannot be hardened by heat treatment. 

The austenitic stainless steels are considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes.Two important considerations in producing weld joints in the austenitic stainless steels are: 1) preservation of corrosion resistance, and 2) avoidance of cracking. A temperature gradient is produced in the material being welded which ranges from above the melting temperature in the molten pool to ambient temperature at some distance from the weld. The higher the carbon level of the material being welded, the greater the likelihood that the welding thermal cycle will result in the chromium carbide precipitation which is detrimental to corrosion resistance. To provide material at the best level of corrosion resistance, low carbon material (ATI 304L) should be used for material put in service in the welded condition. Alternately, full annealing dissolves the chromium carbide and restores a high level of corrosion resistance to the standard carbon content materials. Weld metal with a fully austenitic structure is more susceptible to cracking during the welding operation. For this reason, ATI 302, ATI 304, and ATI 304L alloys are designed to resolidify with a small amount of ferrite to minimize cracking susceptibility.