254SMO Stainless Steel Plate Per kg (Latest 2026)
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When sourcing 254SMO stainless steel plates, buyers typically evaluate a combination of factors, including material costs, corrosion resistance, supplier reliability, and long-term performance.
As of 2026, the market reference price for 254SMO stainless steel plates ranges from approximately $8 to $18 per kilogram, depending on thickness, surface finish, order volume, certification requirements, and raw material market conditions.
For buyers, the lowest price is not necessarily the best choice. The key lies in selecting a supplier that offers consistent chemical composition, provides complete Material Test Certificates (MTC), supports PMI (Positive Material Identification) verification, and offers material selection advice tailored to specific application scenarios.
What is 254 SMO stainless steel plate?
254 SMO® is a superaustenitic stainless steel (designated UNS S31254 and EN 1.4547). It was developed to address the susceptibility of 316L and 904L steels to crevice corrosion in seawater and other chloride-rich environments. Its defining characteristic is a molybdenum content of approximately 6% (earning it the common designation "6Mo"), complemented by high nitrogen levels and the addition of copper, making it particularly suitable for high-chloride environments such as seawater applications, desalination plants, and bleach plants.
254SMO stainless steel plate per kg (Latest 2026)
In 2026, 254SMO (UNS S31254 / EN 1.4547) stainless steel plate typically costs around USD 8,000–18,000 per ton (USD 8–18/kg). The actual price depends on plate thickness, surface finish, order quantity, raw material nickel and molybdenum costs, production process, and inspection requirements such as EN10204 3.1 MTC, PMI testing, and ultrasonic inspection.
| Thickness (mm) | Price (USD/kg) | Price (USD/lb) | Price (USD/ton) | Rolling Method |
| 3 – 6 | $13.50 – 15.20 | $6.12 – 6.89 | $13,500 – 15,200 | Cold-rolled |
| 8 – 12 | $12.00 – 13.60 | $5.44 – 6.17 | $12,000 – 13,600 | Cold/Hot |
| 15 – 20 | $11.30 – 12.80 | $5.13 – 5.81 | $11,300 – 12,800 | Hot-rolled |
| 25 – 30 | $10.80 – 12.10 | $4.90 – 5.49 | $10,800 – 12,100 | Hot-rolled |
| 40 – 50 | $11.60 – 13.20 | $5.26 – 5.99 | $11,600 – 13,200 | Hot-rolled (thick) |
What is the price outlook for 254SMO plate in 2026? Will prices drop?
In the short term (6 months), prices are expected to fluctuate within the $12–17/kg range. Nickel prices are supported by battery demand and are unlikely to fall sharply, while molybdenum prices remain at historical highs. A significant price drop (>20%) would require nickel prices to fall below $12,000/t, a scenario currently considered unlikely. Recommendation: If your project is confirmed, lock in the price as soon as possible (quotes are typically valid for 30 days).
254SMO stainless steel Trends
Chemical Composition (ASTM A240)
| Element | C | Cr | Ni | Mo | N | Cu | Mn | Si | P | S |
|---|---|---|---|---|---|---|---|---|---|---|
| 254 SMO (S31254) | ≤ 0.020 | 19.5–20.5 | 17.5–18.5 | 6.0–6.5 | 0.18–0.22 | 0.50–1.00 | ≤ 1.00 | ≤ 0.80 | ≤ 0.030 | ≤ 0.010 |
| 316L (S31603) - reference | ≤ 0.030 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 | ≤ 0.10 | - | ≤ 2.00 | ≤ 0.75 | ≤ 0.045 | ≤ 0.030 |
Mechanical Properties (Annealed)
| Property | 254 SMO (S31254) | 316L (Reference) |
|---|---|---|
| 0.2% Yield strength, min. | 300 MPa (43 ksi) | 170 MPa (25 ksi) |
| Tensile strength, min. | 650 MPa (94 ksi) | 485 MPa (70 ksi) |
| Elongation, min. | 35% | 40% |
| Hardness, typical | ~96 HRB (210 HB) | ~95 HRB |
| Density | 8.0 g/cm³ | 7.98 g/cm³ |
| Magnetic permeability | ≈ 1.002 (non-magnetic) | Non-magnetic (annealed) |
Applicable Standards
| Standard | Scope |
| ASTM A240 / ASME SA240 | Stainless steel plate, sheet, flat bar |
| EN 10028-7 | Stainless steel plates for pressure purposes |
| GB/T 4237 | Chinese standard (SS cold/hot-rolled plate) |
| NORSOK M-650 | Oil & gas (if required) |
| PED 2014/68/EU | European pressure equipment |
How to Calculate 254smoStainless Steel Plate Weight?
The Formula
Weight (kg) = Thickness (mm) × Width (m) × Length (m) × Density (8.0)
Weight Per Square Meter (kg/m²)
| Thickness (mm) | Thickness (in) | kg/m² | lb/ft² |
| 1 | 0.039 | 8.0 | 1.63 |
| 1.5 | 0.059 | 12.0 | 2.45 |
| 2 | 0.079 | 16.0 | 3.27 |
| 3 | 0.118 | 24.0 | 4.90 |
| 4 | 0.157 | 32.0 | 6.54 |
| 5 | 0.197 | 40.0 | 8.17 |
| 6 | 0.236 | 48.0 | 9.80 |
| 8 | 0.315 | 64.0 | 13.07 |
| 10 | 0.394 | 80.0 | 16.33 |
| 12 | 0.472 | 96.0 | 19.60 |
| 15 | 0.591 | 120.0 | 24.50 |
| 16 | 0.630 | 128.0 | 26.13 |
| 20 | 0.787 | 160.0 | 32.67 |
| 25 | 0.984 | 200.0 | 40.83 |
| 30 | 1.181 | 240.0 | 48.99 |
| 40 | 1.575 | 320.0 | 65.33 |
| 50 | 1.969 | 400.0 | 81.66 |
| 60 | 2.362 | 480.0 | 97.99 |
| 80 | 3.150 | 640.0 | 130.66 |
| 100 | 3.937 | 800.0 | 163.33 |
Typical Applications by Thickness
| Application | Common Thickness |
| Desalination (MED/RO) shells | 8 – 20 mm |
| Chemical tanks (H₂SO₄, H₃PO₄) | 6 – 30 mm |
| FGD absorber liners | 4 – 10 mm |
| Pulp/paper bleaching towers | 10 – 25 mm |
| Marine (ballast, valve bodies) | 10 – 50 mm |
| Food/pharma CIP systems | 3 – 10 mm |
254SMO vs. Other Grades :Price (FOB China, Oct 2026)
254 SMO is a premium grade, but it is not always the most expensive option. The table below places it in context:
| Grade | UNS | Ni | Mo | PREn | Yield (MPa) | Indicative USD/kg (2026) |
|---|---|---|---|---|---|---|
| 316L | S31603 | 10–14% | 2.0–3.0% | ~24 | 170 | 3 – 5 |
| 317L | S31703 | 11–15% | 3.0–4.0% | ~29 | 205 | 5 – 8 |
| 904L | N08904 | 23–28% | 4.0–5.0% | ~34–36 | 220 | 10 – 18 |
| Super Duplex 2507 | S32750 | 6–8% | 3.0–5.0% | > 40 | 550 | 12 – 20 |
| 254 SMO | S31254 | 17.5–18.5% | 6.0–6.5% | ≥ 42.5 | 300 | 14 – 22 |
| Alloy 20 | N08020 | 32–38% | 2.0–3.0% | ~28 | 240 | 18 – 30 |
254SMO Stainless Steel Plate Supplier
Standard Specification: ASTM A240 / ASME SA240 (Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications).
Common Dimensions (Plate/Sheet):
Width: 1000mm, 1219mm, 1500mm, 2000mm, 2500mm.
Length: 2000mm, 2438mm, 3000mm, 6000mm (or custom lengths from coils).
Surface Finish:
No. 1: Hot-rolled, annealed, and pickled (most common industrial surface condition for plates).
2B: Cold-rolled, smooth, and pickled (suitable for thinner sheets).
Testing/Certification:
Mill Test Certificate (MTC): EN 10204 3.1 or 3.2.
Corrosion Testing: G48 (pitting and crevice corrosion test) reports are typically provided upon request.
254SMO Stainless Steel Plate Specifications
| Product Category | Specification Standard | Surface Finish | Typical Thickness Range |
| Hot Rolled Plate | ASTM A240 / ASME SA240 | No. 1 (Annealed & Pickled) | 4.0 mm – 80.0 mm |
| Cold Rolled Sheet | ASTM A240 / ASME SA240 | 2B (Smooth / Matte) | 0.5 mm – 3.0 mm |
| Wide Plate | ASTM A240 | No. 1 / Polished | Up to 3000 mm width |
| Custom Cut Plate | ASTM A480 | Plasma / Laser / Waterjet | Customized per drawing |
| Clad Plate | ASTM A265 | Mill Finish | Base: Carbon Steel + 254SMO |
Standard export packaging
GNEE packages 254SMO stainless steel plates according to export standards, utilizing anti-rust paper and PVC protective film on the surface, along with moisture-proof plastic wrapping and secure steel framing to prevent scratches, deformation, or corrosion during long-distance ocean transport. Each batch is clearly marked with the material grade, dimensions, heat/batch number, and weight, and is accompanied by an EN10204 3.1 MTC quality certificate to ensure full traceability. Customized wooden crating is available for thick plates or precision-cut sheets to meet the transport requirements of global projects.
FAQ
Q: What's the minimum order quantity?
A: GNEE stock sizes (3–20 mm × 1500 × 6000 mm) can be ordered per single plate (~360–960 kg each). Custom sizes: 5 tons minimum.
Q: Can 254SMO plate be welded?
A: Yes, excellent weldability. Recommended filler: ERNiCrMo-3 / E31254. No preheat needed for < 6 mm; 100–150°C for > 25 mm. Interpass ≤ 150°C. Post-weld: pickling & passivation.
Q: What's the difference between 254SMO and 316L plate pricing?
A: 254SMO costs 2.5–3.5× more than 316L. However, if your service environment has Cl⁻ > 5,000 ppm + T > 50°C, or dilute sulfuric/phosphoric acid, 316L will pit or corrode within 2–3 years. The replacement cost + downtime far exceeds the 254SMO premium.
Q: What's the delivery time for 254SMO plate?
A: Stock sizes: 7–15 days. Custom (non-stock thickness/size): 30–45 days. With 3.2 MTC + third-party inspection: add 5–7 days.
