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At Gangsteel, a leading manufacturer and exporter of stainless steel products, we supply high-quality SA 240 GR 304L stainless steel plates compliant with ASME SA 240 and ASTM A240 standards.
A common question we receive is the comparison between SA 240 GR 304L and S30403. This article clarifies that SA 240 GR 304L and S30403 refer to the same material, detailing their specifications, properties, and applications for uses like plat stainless 304 and SA 240 GR 304 pipe. For inquiries, contact us at admin@gangsteel.com or explore our ASME SA 240 stainless steel plate offerings.
Key Clarification: SA 240 GR 304L and S30403 are the same material, with SA 240 GR 304L being the ASME specification for plates and S30403 being the UNS identifier for the alloy’s composition. Both share identical properties, including a density of 8.00 g/cm³ and SA 240 304 non magnetic characteristics in the annealed state.
Since SA 240 GR 304L and S30403 are the same material, their chemical compositions are identical:
Element |
SA 240 GR 304L / S30403 (%) |
---|---|
Carbon (C) |
0.00 - 0.03 |
Manganese (Mn) |
0.00 - 2.00 |
Silicon (Si) |
0.00 - 0.75 |
Phosphorus (P) |
0.00 - 0.045 |
Sulfur (S) |
0.00 - 0.030 |
Chromium (Cr) |
18.00 - 20.00 |
Nickel (Ni) |
8.00 - 12.00 |
Nitrogen (N) |
0.00 - 0.10 |
Iron (Fe) |
Balance |
For detailed specifications, refer to our SS 304 data sheet.
The mechanical properties of SA 240 GR 304L (S30403) for annealed plates (8-75 mm thick) are:
Property |
Value (Minimum) |
Notes |
---|---|---|
Tensile Strength |
485 MPa (70.3 ksi) |
Strength before fracture |
Yield Strength (0.2% Offset) |
170 MPa (24.7 ksi) |
Stress at plastic deformation onset |
Elongation (A5, 50 mm) |
40% |
High ductility for forming |
Hardness (Brinell) |
≤ 201 HB |
Supports machinability |
Hardness (Rockwell B) |
≤ 92 HRB |
Alternative hardness metric |
Compared to SA 240 GR 304 (S30400), 304L has lower strength (tensile ≥485 MPa vs. 515 MPa, yield ≥170 MPa vs. 205 MPa) due to reduced carbon, but superior weldability. See sa 240 gr 304.
These properties support applications like plat SS 304 3mm and plate 2 mm SUS 304.
SA 240 GR 304L (S30403) offers excellent corrosion resistance in:
Its low carbon content (≤0.03%) minimizes sensitization, making it ideal for welded applications like SA 240 GR 304 pipe. It’s less resistant to chloride pitting compared to SA 240 GR 316L. Weldability is excellent with ER308L fillers. For chloride-heavy environments, explore sa 240 gr 316l.
SA 240 GR 304L (S30403) is used in:
For high-temperature applications, explore sa 240 gr 304h or sa 240 gr 321.
As of October 15, 2025, SA 240 GR 304L (S30403) plate prices (2B finish, 3-6mm) range from $1.50-$3.45/kg globally. Gangsteel offers competitive pricing at $1.50/kg FOB (MOQ 1 ton) for sa 240 gr 304l plates, including custom sizes like plate 2 mm SUS 304.
Gangsteel provides certified SA 240 GR 304L (S30403) plates with competitive SS 304 plate price and global delivery. Our 600+ ton inventory supports applications from plat stainless 304 to heavy plates. For quotes or to learn more, visit our astm a 240 stainless plate page or email admin@gangsteel.com.
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