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US 309/309S (UNS S30900/S30908) steel

Product Category：

Stainless Steel Plate

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info@mingdingsteel.com

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+8615553113555

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US 309/309S (UNS S30900/S30908) steel

Product information

TYPES 309 AND 309S are austenitic chromium-nickel stainless steels that provide excellent corrosion resistance and heat resistance plus good strength at room and elevated temperatures. Type 309S is identical to Type 309 except for a lower carbon content that minimizes carbide precipitation and improves weldability.
Alloy 309 and 309S is best known for high temperature service. This alloy works well up to 2000 °F, especially if oxidation resistance is required. 309 and 310 stainless steel are premier high temperature performers among the common stainless grades available from our stock. High nickel and chromium content and a coarse grain structure result in:

Improved resistance to cyclic oxidation
Increased resistance to sulfidation
Better high temperature strength
Improved resistance to intergranular corrosion

309S (UNS S30908) stainless steel is the low carbon version of the alloy. It is utilized for ease of fabrication.

309H (UNS S30909) is a high carbon modification developed for enhanced creep resistance. It most instances the grain size and carbon content of the plate can meet both the 309S and 309H requirements. When heated between 1202 – 1742°F (650 – 950°C) the alloy is subject to sigma phase precipitation. A solution annealing treatment at 2012 – 2102°F (1100 – 1150°C) will restore a degree of toughness. Alloy 309 can be easily welded and processed by standard shop fabrication practices.

Technical data

Chemical Composition

Grade	C	Si	P	S	Cr	Mn	Ni	Fe
309	0.20 max	1.0 max	0.045 max	0.030 max	22.0 - 24.0	2.0 max	12.0 - 15.0	Remainder
309S	0.08 max	1.0 max	0.045 max	0.030 max	22.0 - 24.0	2.0 max	12.0 - 15.0	Remainder

Mechanical Properties

Grade	Tensile Strength (ksi)	0.2% Yield Strength (ksi)	Elongation% in 2 inches
309	75	30	40
309S	70	25	40

Physical Properties

	309	309S	Temperature in °C
Density	7.9 g/cm³	8.03 g/cm³	Room
Specific Heat	0.12 Kcal/kg.C	0.12 Kcal/kg.C	22°
Melting Range	1399 - 1454 °C	1399 - 1454 °C	-
Modulus of Elasticity	200 KN/mm²	200 KN/mm²	22°
Electrical Resistivity	78 µΩ.cm	78 µΩ.cm	Room
Coefficient of Expansion	14.9 µm/m °C	14.9 µm/m °C	20 - 100°
Thermal Conductivity	15.6 W/m -°K	15.6 W/m -°K	20°

FAQ

Q. Can I have a sample order for stainless steel sheet plate products?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.

Q. What about the lead time?
A:Sample needs 3-5 days;

Q. Do you have any MOQ limit for stainless steel sheet plate products order?
A: Low MOQ, 1pcs for sample checking is available

Q. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional. For mass products, ship freight is prefered.

Q. Is it OK to print my logo on products?
A: Yes. OEM and ODM are available for us.

Q: How to ensure the quality?

A:Mill Test Certificate is supplied with shipment. If needed, a Third Party Inspection is acceptable

Factory video

Shandong Mingding Supply Chain Management Service Co., Ltd. was established in 2013, focusing on the production, processing and trade of metal materials. We have a professional team to provide quality service, we sincerely welcome customers at home and abroad to visit our company for guidance and long-term cooperation.

Warehouse storage

The company has the most advanced production equipment and automatic control system, to ensure the most reliable product quality. In addition, we also have a professional international trade and logistics team. With quality products and excellent service, we have established a large number of long-term customers all over the world.

Packing and delivery

To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.

Production Technology

Our main products include high quality carbon steel, stainless steel products,galvanized steel products, aluminum and copper. We can also provide cutting, punching, bending, polishing, shearing, wire drawing and other related service.

Honor

Application

Our company is set production processing and trade as one. The company has the most advanced production equipment and automatic control system, to ensure reliable product quality and sufficient supply capacity. Our main products are stainless steel, silicon steel, galvanized steel, carbon steel, aluminum products and other series. Applicable to engineering, coal mining, shipping, aviation, boiler, machinery, military and other fields. We sincerely welcome customers from all over the world to visit our company to discuss long-term cooperation.

Architectural field

Automotive field

Aviation field

Chemical industry field

FAQ

How do you package the product?

The inner layer is covered with waterproof paper, packed in iron and secured by fumigated wooden brackets. It can effectively protect products from corrosion in the process of sea sample transportation.

Are the products inspected before shipment?

Of course. All our products go through strict quality tests before they are packed. Those that fail will be destroyed.

Can I visit your factory?

Of course. We welcome customers from all over the world to visit our factory.

What certifications have your products passed?

We have ISO 9001, SGS, EWC and other certifications.

Can you provide samples?

Of course, we can send samples all over the world. Our samples are free of charge, but the customer needs to bear the Courier charge

What is the loading port?

Normally, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. You can choose other ports according to your needs.

Stainless Steel Plate