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Stainless Steel 304 Strip for Making Tubes and Appliance
|Place of Origin||China|
|Standard||ASME, ASTM, EN, BS, GB, DIN, JIS etc|
|Minimum Order Quantity||1 ton|
|Packaging Details||Standard export sea-worthy packing|
|Delivery Time||5-15 days subject to the clients' requirement and quantity|
|Payment Terms||TT, L/C|
|Supply Ability||3000 tons per year|
● SAE 304 stainless steel is the most common stainless steel. The steel contains both chromium (between 18% and 20%) and nickel (between 8% and 10.5%), metals as the main non-iron constituents. It is an austenitic stainless steel. It is less electrically and thermally conductive than carbon steel. It is magnetic, but less magnetic than steel. It has a higher corrosion resistance than regular steel and is widely used because of the ease in which it is formed into various shapes
● The composition was developed by W. H. Hatfield at Firth-Vickers in 1924 and was marketed under the trade name "Staybrite 18/8".
● It is specified by SAE International as part of its SAE steel grades. Outside the US it is commonly known as A2 stainless steel, in accordance with ISO 3506 for fasteners. In the commercial cookware industry it is known as 18/8 stainless steel. In the unified numbering system it is UNS S30400 The Japanese equivalent grade of this material is SUS304. It is also specified in European norm 1.4301.
Stainless Steel 304 1.4301
● Stainless steel 304 and stainless steel 304L are also known as 1.4301 and 1.4307 respectively. Type 304 is the most versatile and widely used stainless steel. It is still sometimes referred to by its old name 18/8 which is derived from the nominal composition of type 304 being 18% chromium and 8% nickel. Type 304 stainless steel is an austenitic grade that can be severely deep drawn. This property has resulted in 304 being the dominant grade used in applications like sinks and saucepans. Type 304L is the low carbon version of 304. It is used in heavy gauge components for improved weldability. Some products such as plates and pipes may be available as “dual certified” material that meets the criteria for both 304 and 304L. 304H, a high carbon content variant, is also available for use at high temperatures. Properties given in this data sheet are typical for flat-rolled products covered by ASTM A240/A240M. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this data sheet.
● Springs, screws, nuts & bolts
● Sinks & splash backs
● Architectural panelling
● Brewery, food, dairy and pharmaceutical production equipment
● Sanitary ware and troughs
● Stainless steel grade 1.4301/304 also corresponds to: S30400, 304S15, 304S16, 304S31 and EN58E.
● 304 has excellent corrosion resistance in may environments and when in contact with different corrosive media. Pitting and crevice corrosion can occur in environments containing chlorides. Stress corrosion cracking can occur above 60°C.
● 304 has good resistance to oxidation in intermittent service up to 870°C and in continuous service to 925°C. However, continuous use at 425- 860°C is not recommended. In this instance 304L is recommended due to its resistance to carbide precipitation. Where high strength is required at temperatures above 500°C and up to 800°C grade 304H is recommended. This material will retain aqueous corrosion resistance.
● Fabrication of all stainless steels should be done only with tools dedicated to stainless steel materials. Tooling and work surfaces must be thoroughly cleaned before use. These precautions are necessary to avoid cross contamination of stainless steel by easily corroded metals that may discolour the surface of the fabricated product.
● 304 stainless steel readily work hardens. Fabrication methods involving cold working may require an intermediate annealing stage to alleviate work hardening and avoid tearing or cracking. At the completion of fabrication a full annealing operation should be employed to reduce internal stresses and optimise corrosion resistance.
● Fabrication methods like forging, that involving hot working should occur after uniform heating to 1149-1260°C. The fabricated components should then be rapidly cooled to ensure maximum corrosion resistance.
● 304 has good machinability. Machining can be enhanced by using the following rules: Cutting edges must be kept sharp. Dull edges cause excess work hardening. Cuts should be light but deep enough to prevent work hardening by riding on the surface of the material. Chip breakers should be employed to assist in ensuring swarf remains clear of the work. Low thermal conductivity of austenitic alloys results in heat concentrating at the cutting edges. This means coolants and lubricants are necessary and must be used in large quantities.
● 304 stainless steel cannot be hardened by heat treatment. Solution treatment or annealing can be done by rapid cooling after heating to 1010- 1120°C.
● Fusion welding performance for type 304 stainless steel is excellent both with and without fillers. Recommended filler rods and electrodes for stainless steel 304 is grade 308 stainless steel. For 304L the recommended filler is 308L. Heavy welded sections may require post-weld annealing. This step is not required for 304L. Grade 321 may be used if post-weld heat treatment is not possible.
|Product Name||Stainless Steel Strip|
|Thickness||Cold rolled: 0.15mm-10mmHot rolled: 3.0mm-180mm|
|Surface Finish||2B, 2D, 4B, BA, HL, MIRROR, brush, NO. 1-NO. 4, 8K|
|Length||1000mm-11000mm or as customer' s requirement|
|Standard||ASME, ASTM, EN, BS, GB, DIN, JIS etc|
|Package||Clients' requirement and Standard export sea-worthy packing|
|Delivery time||7-15 days subject to the clients' requirement and quantity|
|Type 304 Stainless Steel Chemical Composition, %|
|Standard||AISI (UNS)||C, ≤||Si, ≤||Mn, ≤||P, ≤||S, ≤||Cr||Ni|
|ASTM A276/A276M||304 (S30400)||0.08||1.00||2.00||0.045||0.030||18.0-20.0||8.0-11.0|
● Petroleum waste gas combustion pipeline;
● Engine exhaust pipe;
● Boiler shell, heat exchanger, heating furnace parts;
● Muffler parts for diesel engines;
● Boiler pressure vessel;
● Chemical transport vehicles;
● Expansion joints;
● Spiral welded pipes for furnace pipes and dryers;