430 Stainless Steel Plate
430 stainless steel plate is the most commonly used ferritic stainless steel. Its core feature is that it does not contain nickel, which makes its cost much lower than that of austenitic stainless steels like 304. At the same time, it has excellent corrosion resistance (especially resistance to stress corrosion cracking), thermal conductivity and formability, but it has poor low-temperature toughness and cannot be strengthened through heat treatment.
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Product Introduction

430 Stainless Steel Plate is one of the most widely used ferritic stainless steels. It provides a practical, cost-effective solution for applications requiring good corrosion resistance in mildly corrosive environments, combined with appealing aesthetics and magnetic properties.

As a ferritic grade, its microstructure is fundamentally different from the more common austenitic steels (like 304). This grants it several key advantages: higher thermal conductivity, lower thermal expansion, and superior resistance to stress corrosion cracking. It is also magnetic in all conditions. Its most significant limitation compared to austenitic grades is reduced ductility and poorer weldability. However, its lower cost (due to the absence of nickel) makes it the preferred choice for numerous indoor and decorative applications where the superior corrosion performance of 304 is not strictly necessary.

Product parameters


Item / ParameterSpecification for 430 (UNS S43000)Notes / Significance
Key FeatureEconomical Ferritic Grade. Good general corrosion resistance, magnetic, with low thermal expansion.The primary alternative to 304 for cost-sensitive, non-welded applications.
Common DesignationsUNS S43000, AISI 430, EN 1.4016, X6Cr17, JIS SUS 430, 1Cr17Ensure your Mill Test Certificate references the correct standard.
Chemical Composition (Typical wt.%)C: ≤ 0.12Cr: 16.0 - 18.0Ni: ≤ 0.60 (if present)Mn: ≤ 1.00Si: ≤ 1.00No Nickel is the main cost saver. Chromium provides corrosion resistance.
Mechanical Properties (Annealed Plate)Tensile Strength (Rm): ≥ 450 - 480 MPaYield Strength (Rp0.2): ≥ 205 - 310 MPaElongation (A): ≥ 20 - 56%Hardness (HB): ≤ 192 - 235Lower ductility than austenitic grades. Properties vary by standard and thickness.
Physical PropertiesDensity: 7.75 - 7.80 g/cm³Thermal Conductivity: ~26.1 W/m•K (at 100°C)CTE (20-100°C): ~10.4 µm/m•°CMelting Range: ~1425 - 1510 °CLower thermal expansion and higher conductivity than 304 (beneficial for heat exchangers).
Key Standards (Plate)ASTM A240/A240MThe most common procurement standard.
Common Surface Finishes2B, BA, No.4 (Hairline), No.8 (Mirror), etc.Widely used for decorative purposes.

Surface selection

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Packaging and transportation

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FACTORY SHOW

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FAQ

Q:What about your price? 
A:Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products. 

Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. 

Q:Does the product have quality inspection before loading? 
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we
accept the third party inspection absolutely. 

Q:How about the delivery time? 
A:Within 3-15 days after we confirm you requirement. 

Q:What is your terms of payment ?
A:T/T, L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me. 

Q: Do you provide samples? 
A:Yes,we could offer the sample for you to test but please pay freight fee.

Q:How do we trust your company? 
A:We are a specialized company focusing on global steel trading and supply chain services. Our mission is to provide high-quality, multi-specification, and one-stop steel products and solutions to customers worldwide.

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