The Gnee Steel Company maintains a complete inventory of 304H stainless steel plate in thicknesses from 3/16" to 6-1/2" in 1/8" increments ready for immediate delivery and use in your high temperature applications.
| 3/16" | 1/4" | 5/16" | 3/8" | 7/16" | 1/2" | 9/16" | 5/8" | 3/4" |
|---|---|---|---|---|---|---|---|---|
| 4.8mm | 6.3mm | 7.9mm | 9.5mm | 11.1mm | 12.7mm | 14.3mm | 15.9mm | 19mm |
| 1 1/4" | 1 3/8" | 1 1/2" | 1 5/8" | 1 3/4" | 2" | 2 1/4" | 2 1/2" | 2 3/4" |
| 31.8mm | 34.9mm | 38.1mm | 41.3mm | 44.5mm | 50.8mm | 57.2mm | 63.5mm | 69.9mm |
| 3 3/4" | 4" | 4 1/4" | 4 1/2" | 4 3/4" | 5" | 5 1/4" | 5 1/2" | 5 3/4" |
| 95.3mm | 101.6mm | 108mm | 114.3mm | 120.7mm | 127mm | 133.4mm | 139.7mm | 146.1mm |

Stainless steel alloy 304H (UNS S30409) is a variation of austenitic Alloy 304 with 18% chromium and 8% nickel, in which the carbon content is controlled within a range of 0.04 to 0.10 to provide greater resistance to high temperatures to parts exposed to temperatures above €800 F. This alloy can be considered for a wide variety of applications and presents an excellent combination of corrosion resistance and machinability.
General Properties
Alloys 304 (S30400), 304L (S30403), and 304H (S30409) of stainless steel are variations of the austenitic alloy of 18% chromium - 8% nickel, the best known and most widely used alloy of the stainless steel family. These alloys can be considered for a wide variety of applications where one or more of the following properties are important:
Corrosion resistance
Prevention of product contamination
Oxidation resistance
Ease of manufacturing
Excellent formability
Aesthetic appearance
Ease of cleaning
High strength and low weight
Good resistance and stability at cryogenic temperatures
Easy availability of a wide variety of product forms
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