305 Stainless Steel Plate
305 stainless steel is an austenitic stainless steel, with its core feature being a high nickel content, which gives it a low work hardening rate and excellent deep drawing performance, making it particularly suitable for parts requiring complex deformation. It belongs to the same 18% chromium (Cr) stainless steel series as 304 but has a higher nickel content.
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Product Introduction

305 Stainless Steel Plate is an austenitic chromium-nickel stainless steel specifically engineered for excellent formability and low work-hardening rate. Its key design feature is a deliberately elevated nickel content (typically 10.5% to 13.0%) compared to the standard 304 grade. This high nickel content stabilizes the austenitic microstructure, resulting in several critical advantages for demanding fabrication processes.

The primary benefit of 305 is its significantly reduced tendency to work-harden during cold deformation. This makes it the premier choice for severe deep-drawing, spinning, cold-heading, and other forming operations where 304 might become too hard and crack. It retains good corrosion resistance comparable to 304 in general atmospheric and mild chemical environments, maintains non-magnetic properties, and offers excellent welding characteristics. It is the material of choice when the utmost in formability is required without resorting to specialized, high-cost alloys.

Product parameters


Item / ParameterSpecification for 305 (UNS S30500)Notes / Significance
Key FeatureLow Work-Hardening Austenitic Steel. Optimized for severe cold forming operations like deep drawing, spinning, and cold heading.The definitive reason to choose 305 over 304 for complex, multi-stage forming.
Standard DesignationsUNS S30500, AISI 305, EN 1.4303, JIS SUS305, GB/T 10Cr18Ni12 (Old: 1Cr18Ni12)Ensure your Mill Test Certificate (MTC) references the correct standard for your market.
Chemical Composition (Typical wt.%)C: ≤ 0.12Cr: 17.0 - 19.0Ni: 10.5 - 13.0 (Key difference vs. 304)
Mn: ≤ 2.00Si: ≤ 0.75 - 1.00
The high Nickel (Ni) content is fundamental to its low work-hardening and superior ductility.
Mechanical Properties (Annealed Plate)Yield Strength (Rp0.2): ≥ 175 - 177 MPaTensile Strength (Rm): ≥ 480 MPa (Can achieve ~550-630 MPa)Elongation (A): ≥ 40% (Can achieve ~58%)Hardness (HB): ≤ 187Lower yield strength and higher elongation than 304 indicate superior formability. Actual tested values often exceed minimum standards.
Physical PropertiesDensity: 7.93 g/cm³Melting Range: 1398 ~ 1453 °CMagnetism: Non-Magnetic (Austenitic)
Thermal Conductivity: 16.3 W/(m·K) at 100°C
Properties are similar to other 18-8 austenitic steels like 304.
Key Standards (Plate)ASTM A240/A240M (Pressure Vessel & General Application)GB/T 3280 (Cold Rolled Sheet/Plate)
JIS G 4305 (Cold Rolled Stainless Steel Plate)
ASTM A240 is the common international procurement standard.
Common Surface Finishes2B, BA (Bright Annealed), No.1, No.4 (Hairline), etc.Supplied in annealed (solution treated) and descaled condition for optimal forming.

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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