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Both grades share a density of 8.00 g/cm³ and non-magnetic properties in the annealed state, making them suitable for applications requiring SA 240 304 non magnetic characteristics, such as plat SS 304 3mm and plate 2 mm SUS 304. Gangsteel’s sa 240 gr 304 and sa 240 gr 304l plates are certified for quality.
The key difference between stainless steel 304 and 304L is the carbon content, with minor variations in nickel:
Element |
SA 240 GR 304 (%) |
SA 240 GR 304L (%) |
---|---|---|
Carbon (C) |
0.00 - 0.08 |
0.00 - 0.03 |
Manganese (Mn) |
0.00 - 2.00 |
0.00 - 2.00 |
Silicon (Si) |
0.00 - 0.75 |
0.00 - 0.75 |
Phosphorus (P) |
0.00 - 0.045 |
0.00 - 0.045 |
Sulfur (S) |
0.00 - 0.030 |
0.00 - 0.030 |
Chromium (Cr) |
18.00 - 20.00 |
18.00 - 20.00 |
Nickel (Ni) |
8.00 - 10.50 |
8.00 - 12.00 |
Nitrogen (N) |
0.00 - 0.10 |
0.00 - 0.10 |
Iron (Fe) |
Balance |
Balance |
For detailed specs, refer to our SS 304 data sheet.
The mechanical properties of stainless steel 304 and 304L differ slightly due to the carbon content:
Property |
SA 240 GR 304 (Min) |
SA 240 GR 304L (Min) |
Notes |
---|---|---|---|
Tensile Strength (MPa) |
515 |
485 |
304 is stronger due to higher carbon |
Yield Strength (0.2% Offset, MPa) |
205 |
170 |
304L sacrifices strength for weldability |
Elongation (A5, 50 mm) |
40% |
40% |
Both highly formable |
Hardness (Brinell) |
≤ 201 HB |
≤ 201 HB |
Similar machinability |
Hardness (Rockwell B) |
≤ 92 HRB |
≤ 92 HRB |
Similar machinability |
*Source: ASME SA 240 and ASTM A240 standards, as of October 15, 2025.
Cold-working can increase strength in both grades (e.g., tensile up to 900 MPa for 304), but reduces ductility.
Both stainless steel 304 and 304L offer excellent corrosion resistance in:
Key differences:
Both are less resistant to chloride-induced pitting compared to SA 240 GR 316L, which contains molybdenum. For chloride-heavy environments, explore sa 240 gr 316l.
For critical welds, explore sa 240 gr 304l.
As of October 15, 2025, stainless steel 304L is typically 0-5% less expensive or comparable to 304 due to higher production volumes for welding applications:
Region |
SA 240 GR 304 Price (USD/kg) |
SA 240 GR 304L Price (USD/kg) |
Notes |
---|---|---|---|
Asia (China Export) |
$1.55 - $1.65 |
$1.50 - $1.60 |
FOB Shanghai; 304L slightly cheaper due to demand. |
Europe (Northern) |
$3.16 - $3.30 |
$3.10 - $3.25 |
Stable demand; dual-certified 304/304L similar. |
USA |
$3.35 - $3.50 |
$3.30 - $3.45 |
Tariffs impact pricing. |
India |
$2.40 - $2.45 (~₹200-205) |
$2.35 - $2.40 (~₹195-200) |
304L competitive for welded uses. |
*Sources: Procurement Resource (Q2 2025), IMARC Group (June 2025).<grok:render type="render_inline_citation">
For high-temperature applications, explore sa 240 gr 304h. For chloride-heavy environments, consider sa 240 gr 317l.
Gangsteel provides certified SA 240 GR 304 and SA 240 GR 304L plates with competitive SS 304 plate price, starting at $1.50/kg FOB for 304L and $1.60/kg FOB for 304 (MOQ 1 ton). Our 600+ ton inventory includes custom sizes like plate 2 mm SUS 304 and dual-certified SA 240 TP 304/304L plates for versatility. We support global delivery for applications from plat stainless 304 to heavy plates. For quotes or to learn more about stainless steel 304 and 304L, visit our astm a 240 stainless plate page or email admin@gangsteel.com.
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