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304 Stainless Steel Plate Yield Strength: Technical Insights for Engineers

Introduction to 304 Stainless Steel Plate Yield Strength

The yield strength of 304 stainless steel plate is a key factor for engineers designing structural components, particularly for industries like chemical processing, food production, and construction. As an austenitic alloy, 304 (also known as sa 240 304 material, sa240 304 stainless, or UNS S30400) offers excellent corrosion resistance, formability, and balanced mechanical properties. Yield strength measures the stress at which permanent deformation begins, critical for applications like sa 240 gr 304 plate or sa 240 gr 304 pipe.

Gangsteel, a leading manufacturer and exporter in China, produces 304 stainless steel plates compliant with ASME SA240 and ASTM A240. As experts in ASME SA240 stainless steel plates, Gangsteel provides customized solutions for global clients. This article details the yield strength of 304 stainless steel plates, including variants like sa-240 304l material and sa 240 304h material, and factors influencing it.

 

What is Yield Strength in 304 Stainless Steel?

Yield strength is the stress at which a material starts to deform plastically, measured at a 0.2% offset strain. For 304 stainless steel plates, it is specified in ASME SA240 and ASTM A240 standards. It determines load-bearing capacity in applications like sa 240 type 304 304l pressure vessels or plat stainless 304 cladding. The yield strength of 304 is affected by composition, heat treatment, and processing (e.g., cold working).

 

Yield Strength of 304 Stainless Steel Plate

Per ASME SA240, the minimum yield strength for 304 stainless steel plate in the annealed condition is 205 MPa (30 ksi). Typical values often range from 240 to 310 MPa, depending on processing. The table below summarizes key mechanical properties for sa 240 304 material:

Property

SA240 304 Value

Description

Yield Strength (min)

205 MPa (30 ksi)

Stress at 0.2% offset for plastic deformation.

Tensile Strength (min)

515 MPa (75 ksi)

Maximum stress before fracture.

Elongation (min)

40% (in 2 inches)

Ductility for forming.

Hardness (max)

201 HBW / 92 HRB

Resistance to indentation.

Density

7.93 g/cm³

ss 304 plate densityfor weight calculations.

Gangsteel’s SA240 Gr 304 plates typically achieve 240-310 MPa yield strength, ideal for sa 240 gr 304 plate applications.

 

Variations in Yield Strength: 304 vs 304L and 304H

  • SA 240 304L Material: The low-carbon variant (sa 240 304l material, sa240 304l material) has a lower minimum yield strength of 170 MPa (25 ksi) due to reduced carbon (≤0.03%), prioritizing weldability over strength. For sa 240 304l density (7.93 g/cm³), it suits welded sa 240 tp 304/304l structures.
  • SA 240 304H Material: The high-carbon variant (sa 240 304h material) maintains a 205 MPa minimum yield but enhances creep resistance at high temperatures with carbon (0.04-0.10%).
  • Cold-Worked 304: Cold rolling can increase yield strength up to 1000 MPa, but reduces ductility, affecting sa-240-304 material formability.

Gangsteel’s SA240 Gr 304L and sa 240 304h material cater to specific needs.

 

Factors Affecting Yield Strength in 304 Stainless Steel

Several factors influence the yield strength of 304 stainless steel plates:

  • Heat Treatment: Annealing at 1010-1120°C ensures the minimum 205 MPa for sa 240 304 material. Over-annealing may slightly lower it.
  • Cold Working: Rolling or bending boosts yield strength, as in plate 2 mm sus 304 or plat ss 304 3 mm, but may induce slight magnetism in ss 304 non magnetic material.
  • Grain Size: Finer grains from controlled rolling enhance strength in sa240-304 material.
  • Alloying Variations: Nitrogen (≤0.10%) in materiale sa 240 304 can increase yield strength to 250 MPa.

 

Applications of 304 Stainless Steel Plates

The yield strength of 304 stainless steel supports its use in:

  • Chemical Processing: Tanks and reactors using sa 240 gr 304 plate for pressure resistance.
  • Food Production: Hygienic surfaces in sa 240 gr 304 pipe or sa 240 tp 304l.
  • Construction: Structural panels in plat stainless 304 or plat ss 304 3mm.
  • Automotive: Exhaust systems with sa 182 f304 material forgings.

Gangsteel’s ASME SA 213/SA 213M stainless pipes complement these applications.

 

Price and Market Considerations for 304 Stainless Steel

As of October 2025, ss sheet 304 price, ss 304 steel price, ss 304 sheet price, and 304 ss plate price range from $1,820 to $3,584 per metric ton. Ss 304 rod price is similar. Gangsteel offers competitive pricing for sa240-304 material and sa240-304 a240-304.

 

Comparing 304 with Other Grades

  • SS204 vs SS 304: 304 has better corrosion resistance due to higher nickel; 204 is cheaper for indoor use.
  • SA-240 Type 304 vs 316: 304 for general use, 316 for chloride environments.
  • SA240 Grade 304 vs 430: 304 is non-magnetic with better formability; 430 is magnetic and cheaper.

Gangsteel’s nickel alloy steel plates provide advanced options.

 

Why Choose Gangsteel for 304 Stainless Steel Plates?

Gangsteel offers sa 240 304 plate with:

  • Quality Compliance: Meets ASME SA240 and ASTM A240 standards.
  • Customization: Sizes like plat ss 304 3 mm for specific needs.
  • Global Reach: Worldwide shipping for sa 240 gr 304 means applications.
  • Variety: Including SA240 Gr 347 and SA240 Gr 904L.

 

Conclusion

The yield strength of 304 stainless steel plate (205 MPa minimum) supports its use in diverse applications, from sa 240 304 steel tanks to sa 240 tp 304 pdf specs. Variants like sa 240 304l material adjust for specific needs. For what is sa 240 304 or what is 240 steel, it’s a reliable choice. Gangsteel provides high-quality 304 stainless steel. Contact for UNS stainless steel plates for precise quotes.

FAQ

What is SA 240 304?

What is sa 240 304refers to ASME SA240 Grade 304 stainless steel.

What is SA240 material?

What is SA240is the ASME standard for stainless steel like sa240 material.

What is the density of 304 stainless steel?

Sa 240 304 densityand ss 304 plate density are 7.93 g/cm³.

How does 304L compare to 304 in yield strength?

Sa 240 304l materialhas a lower yield strength (170 MPa min) than 304 (205 MPa min) for better weldability.

What is the price of 304 stainless steel?

Ss 304 sheet priceand 304 ss plate price range $1,820-$3,584/MT as of October 2025.

Is 304 stainless steel non-magnetic?

Yes, ss 304 non magnetic unless cold-worked, which may induce slight magnetism.

 

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