1. Steel Grade: 1.4828 AISI309 S30900
2. Product name: 1.4828 AISI309 S30900 Stainless Steel Round Tube
3. Length: 20m maximum
4. Outside diameter: 3mm - 219mm
5. Wall thickness: 0.5 - 35mm
Steel S30900 (Mat.No. 1.4828*, AISI 309)
Designation by Standards
Chemical Composition (in weight %)
This steel is known for good strength and oxidation resistance in continuous service temperatures up to 1093oC. It is superior to 304 stainless in both strength and corrosion resistance.
Oven linings, boiler baffles, fire box sheets, furnace components and other high temperature containers, parts for steam boiler lining, and their operation.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103x N/mm2]: 200
Density [g/cm3]: 8.0
Thermal conductivity [W/m.K]: 15.6
Electric resistivity [Ohm mm2/m]: 0.78
Specific heat capacity[J/g.K]: 0.50
Coefficient of Linear Thermal Expansion 10-6oC-1
Heat to 1050-1150oC, then quenching in water. Structure is austenite.
This alloy does not respond to heat treatment. Cold work will cause an increase in both hardness and strength.
Hot forming temperature: 1150-950oC.
This alloy machines similarly to type 304 stainless. Its chips are stringy and it will work harden rapidly. It is necessary to keep the tool cutting at all times and use chip breakers.
This steel is slightly more resistant to corrosion than 304 stainless. It will resist nitric, nitric-sulfuric, acetic, lactic and citric acids in mild dilutions. It is recommended for use in oxidizing but not reducing compounds.
Most of the austenitic stainless steels can be readily welded using fusion or resistance methods. Oxyacetylene welding is not recommended. Filler metal should be AWS E/ER 309 or 309L.
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, ilitary, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
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steel flat bar
steel square bar
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steel square pipes
steel welded tubes
steel seamless tubes
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Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Nuclear power steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can you provide a sample for our testing before confirm the order?
A: Yes. We can provide sample to you for approval before you place an order to us. Free sample is available if we have stock.
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