304 Stainless Steel Plate

Type: 304 Stainless Steel Plate
Standard: 304 (UNS S30400)
Size: 3000 X 1500 X 6MM
Manufacture Method: Cold Rolled
Surface Treatment: 2B Finish

What is 304 stainless steel plate?

304 stainless steel is a type of stainless steel that is commonly used in the production of various types of equipment and products. It is an alloy of iron, chromium and nickel. the high chromium and nickel content of 304 stainless steel gives it excellent corrosion resistance, making it resistant to rusting and other forms of corrosion. This makes it an ideal material for a wide range of applications, including the production of stainless steel sheets.
304 stainless steel sheets are thin, flat stainless steel sheets used in a variety of applications. They are commonly used in the production of equipment and products that require high corrosion resistance, such as in the food and beverage industry, chemical processing, and in construction and infrastructure. 304 stainless steel sheet is also used in the production of a wide range of consumer products, including appliances, automotive parts, and household and office products.

304 stainless steel sheets are known for their excellent corrosion resistance, strength and durability. They are also easy to clean and maintain, making them a popular choice for a wide range of applications.

Composition ranges for 304 stainless steel

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
304	min.	–	–	–	–	–	18	–	8	–
	max.	0.08	2	0.75	0.045	0.03	20		10.5	0.1
304L	min.	–	–	–	–	–	18	–	8	–
	max.	0.03	2	0.75	0.045	0.03	20		12	0.1
304H	min.	0.04	–	–	-0.045	–	18	–	8	–
	max.	0.1	2	0.75		0.03	20		10.5

Typical mechanical properties of 304-grade stainless steel

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50 mm) min	Hardness
				Rockwell B (HR B) max	Brinell (HB) max
304	515	205	40	92	201
304L	485	170	40	92	201
304H	515	205	40	92	201

Typical physical properties of 304-grade stainless steel in the annealed condition

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (μm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100 °C (J/kg.K)	Electrical Resistivity (nΩ.m)
			0-100 °C	0-315 °C	0-538 °C	at 100 °C	at 500 °C
304/L/H	8000	193	17.2	17.8	18.4	16.2	21.5	500	720

Approximate Grade specifications for 304-grade stainless steel

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
		BS	En	No	Name
304	S30400	304S31	58E	1.4301	X5CrNi18-10	2332	SUS 304
304L	S30403	304S11	–	1.4306	X2CrNi19-11	2352	SUS 304L
304H	S30409	304S51	–	1.4948	X6CrNi18-11	–	–

Corrosion resistance of 304 stainless steel

Grade 304 stainless steel performs well in a wide range of atmospheric environments and in many corrosive media. It is subject to pitting and crevice corrosion in warm chloride environments and stress corrosion cracking above 60°C (approximate). Grade 304 is considered resistant to drinking water up to approximately 200 mg/L chloride at ambient temperatures, down to approximately 150 mg/L at 60°C.

Heat resistance of 304 stainless steel

Stainless steel 304 has good resistance to oxidation in intermittent use up to 870°C and continuous use up to 925°C. However, if corrosion resistance in water is required, continuous use at 425-860°C is not recommended. In this case, 304L is recommended because of its resistance to carbide precipitation.
If high strength is required at temperatures above 500°C to 800°C, grade 304H is recommended. This material will remain resistant to water corrosion.

304 Stainless Steel Fabrication

All stainless steel fabrication should only be done with tools made for stainless steel materials. Tools and work surfaces must be thoroughly cleaned prior to use. These precautions are necessary to avoid cross-contamination of stainless steel by corrosive-prone metals that may discolor the surface of the manufactured product.

Cold working of 304 stainless steel

Stainless steel 304 is easily work-hardened. Fabrication methods involving cold working may require an intermediate annealing stage to reduce work hardening and avoid tearing or cracking. At the completion of fabrication, a full annealing operation should be used to reduce internal stresses and optimize corrosion resistance.

Hot working of 304 stainless steel

Fabrication methods, such as forging, should be performed after uniform heating to 1149-1260°C. Manufactured parts should then be cooled rapidly to ensure maximum corrosion resistance.

Heat treatment of 304 stainless steel

Stainless steel 304 cannot be hardened by heat treatment.
Solid solution treatment or annealing can be performed by rapid cooling after heating to 1010-1120°C.

Machinability

Stainless steel 304 has good machinability. Machining can be enhanced by using the following rules.
Cutting edges must be kept sharp. Dull edges can lead to excessive work hardening.
Cuts should be light but deep to prevent riding on the surface of the material causing work hardening.
Chipbreakers should be used to help ensure that chips are kept away from the workpiece
The low thermal conductivity of austenitic alloys results in heat concentration at the cutting edge. This means that coolants and lubricants must be used liberally.

Welding of 304 stainless steel

The fusion welding performance of stainless steel 304 is excellent with and without filler. The recommended filler rod and electrode for stainless steel 304 is 308 grade stainless steel. For 304L, the recommended filler is 308 L. Heavy duty welded sections may require post weld annealing. 304L does not require this step. If post weld heat treatment is not possible, then grade 321 may be used.

Applications of 304 stainless steel

• Food processing equipment, especially beer brewing, milk processing and brewing equipment;
• Kitchen benches, sinks, sinks, equipment and utensils;
• Architectural paneling, railings and trim;
• Chemical containers, including shipping containers;
• Heat exchangers;
• Woven or welded screens for mining, quarrying and water filtration;
• Threaded fasteners;
• Springs.

Stainless steel 304 is typically offered by Yaang in a range of finishes in the form:

• Bed sheets
• Strap
• Tubes
• Quarto sheets
• Bars
• Pipe fittings and flanges
• Tubes
• Plates

ASTM DIN GB JIS standard 304 SS Foils, SS GOST 08Х18Н10 2B Plate For Evaporative Condenser, Check Dimension of Stainless Steel 304 Checker Plate

Huge stock of polished ss 304 sheets, finishes include Natural, Bright, Brushed, Dull Polished, Mirror and Embossed Rigidised

PRODUCT	FINISH	THICKNESS MM	MAX SHEET SIZE MM
Grade 304	Plain 2B	0.9	2000 x 1000
Bright	0.9	2000 x 1000
Brushed Finish	0.9, 1.2	2000 x 1000, 2500 x 1250
Rimex Super Mirror	0.8, 1.2	2400 x 1200, 2500 x 1250
Embossed	0.8, 1.0	2500 x 1250

What is better stainless steel 304 or 316?

Stainless steel 304 and 316 are both commonly used in a wide variety of applications. Both alloys are highly corrosion resistant and provide excellent strength and durability. However, there are some differences between the two that may make one a better choice for a particular application.
One key difference between the two alloys is their composition. Stainless steel 304 contains 18% chromium and 8% nickel, while stainless steel 316 contains 16% chromium, 10% nickel, and 2% molybdenum. The molybdenum in stainless steel 316 gives it improved corrosion resistance, particularly against chlorides and other industrial solvents. As a result, stainless steel 316 is often the preferred alloy for applications that will be exposed to these types of corrosive environments, such as marine, chemical processing, and petrochemical applications.
Another difference between the two alloys is their cost. Stainless steel 316 tends to be more expensive than stainless steel 304 due to its higher nickel and molybdenum content.
In general, stainless steel 316 is considered to be more durable and corrosion-resistant than stainless steel 304. However, both alloys have their own unique properties and are suitable for different applications. It’s important to consider the specific requirements of your application when deciding which alloy to use.

Will 304 grade stainless rust?

Grade 304 stainless steel is generally resistant to rusting, but it can still occur under certain circumstances. Factors that may increase the risk of rusting of Grade 304 stainless steel include:

• Exposure to corrosive environments: Grade 304 stainless steel is not resistant to all types of corrosive environments. For example, it is not resistant to highly acidic environments such as sulfuric acid.
• Exposure to high humidity: If stainless steel is exposed to high humidity for a long period of time, it will rust.
• Surface Damage: If the stainless steel surface is damaged, such as scratched or dented, a rust path may develop.
• Lack of proper maintenance: Proper cleaning and maintenance can help prevent stainless steel from rusting. If stainless steel is not properly maintained, it may rust more easily.

Overall, while 304 grade stainless steel is generally resistant to rusting, it is not completely rust free. It is important to consider the specific environment and conditions in which stainless steel is used and to take appropriate precautions to prevent it from rusting.