すべての製品
254 SMO UNS S31254 Super Austenitic Stainless Steel Sheet with 6% Molybdenum PREN ≥ 43 and Chloride SCC Immunity
| 起源の場所 | 山西省 / 輸入品、中国 |
|---|---|
| ブランド名 | Hongtu |
| 証明 | ISO 9001:2015, SGS, ASTM A240/A240M, NACE MR0175, NORSOK M-650 |
| モデル番号 | 254 SMO (UNS S31254 / 1.4547) |
| 最小注文数量 | 300kg |
| 価格 | USD 12.0-18.5 / kg |
| パッケージの詳細 | 両面PVC保護フィルム、防錆紙、燻蒸輸出グレード木製パレット、真空包装可能 |
| 受渡し時間 | 在庫に5〜10営業日、生産に20〜35日 |
| 支払条件 | T/T、L/C を確認できます |
| 供給の能力 | 月産500トン |
商品の詳細
| 合金 | 254 SMO (UNS S31254 / EN 1.4547) | 気性 | 熱く巻き,冷たく巻き,熱く巻き |
|---|---|---|---|
| 厚さ | 0.5mm - 30mm | 幅 | 1000mm,1219mm,1250mm,1500mm,2000mm ほら,これってどう? |
| 長さ | 2000mm、2438mm、3000mm、6000mmまたはカスタマイズされた | 標準 | ASTM A240、EN 10088-2、NACE MR0175/ISO 15156、NORSOK M-650 |
| 表面仕上げ | No.1、2B、2D、酸洗および不動態化 | 抗張力 | ≥650 MPa |
| 降伏強さ | ≥ 300 MPa | 伸長 | ≥35% |
| PREN (穴を掘る抵抗) | ≧43.0 | CPT (臨界孔食温度) | ≥ 60°C (ASTM G48 方法 C) |
| 応用 | 海水淡水化、海洋プラットフォーム、ケミカルタンカー、FGDシステム、漂白プラント | ||
| ハイライト | 254 SMO Super Austenitic SS Sheet,UNS S31254 Seawater Resistant Plate,6Mo Super Austenitic Alloy Sheet |
||
製品の説明
254 SMO UNS S31254 Super Austenitic Stainless Steel Sheet 0.5mm-30mm for Seawater Desalination Equipment
Product Overview
254 SMO is a state-of-the-art super austenitic stainless steel containing 6% molybdenum, delivering extraordinary corrosion resistance that bridges the performance gap between standard 300-series stainless steels and high-nickel alloys. With a PREN ≥ 43, 254 SMO provides robust resistance to pitting, crevice corrosion, and chloride stress corrosion cracking (SCC) in the most demanding marine, chemical, and offshore environments. Its significantly higher strength compared to 316L allows for lighter designs with excellent lifecycle economics.
Key Features
- Premium 6% Mo Super Austenitic: PREN ≥ 43 ensures exceptional pitting and crevice corrosion resistance in high-chloride environments
- Chloride SCC Immunity: High nickel and molybdenum content provides virtual immunity to chloride stress corrosion cracking
- Superior Seawater Performance: Proven in decades of seawater handling, MSF desalination, and offshore platform service
- High Strength: Tensile ≥ 650 MPa, yield ≥ 300 MPa — approximately 50% higher than 316L, enabling thinner, lighter designs
- Excellent Weldability: Weldable with over-alloyed Ni-Cr-Mo fillers (ERNiCrMo-3) maintaining full corrosion resistance
- Cost-Effective vs. Nickel Alloys: Delivers C-276 and 625 level corrosion resistance at a fraction of the material cost
Chemical Composition (Weight %)
| Element | C | Mn | Si | P | S | Cr | Ni | Mo | Cu | N |
|---|---|---|---|---|---|---|---|---|---|---|
| 254 SMO | ≤0.02 | ≤1.00 | ≤0.80 | ≤0.030 | ≤0.010 | 19.5-20.5 | 17.5-18.5 | 6.0-6.5 | 0.50-1.00 | 0.18-0.22 |
Mechanical Properties (Annealed, Room Temperature)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 650 MPa |
| Yield Strength (0.2% offset) | ≥ 300 MPa |
| Elongation in 50mm | ≥ 35% |
| Hardness (Rockwell B) | ≤ 96 HRB |
| Density | 8.0 g/cm³ |
| PREN = %Cr + 3.3*%Mo + 16*%N | ≥ 43.0 |
Available Dimensions
| Parameter | Range |
|---|---|
| Thickness | 0.5mm - 30mm |
| Width | 1000mm - 2000mm |
| Length | 2000mm - 6000mm or Custom |
| Surface Finish | No.1, 2B, 2D, Pickled & Passivated |
Applications
- Multi-stage flash (MSF) and reverse osmosis (RO) desalination equipment
- Seawater intake, piping, and heat exchanger tube sheets
- Offshore oil and gas platform topside process equipment
- Chemical tanker cargo tanks and piping systems
- Flue gas desulfurization (FGD) absorber internals and outlet ducting
- Bleach plant washers and filtrate tanks in pulp and paper mills
- Tall oil distillation columns and fatty acid processing equipment
- Pharmaceutical and fine chemical reactor vessels
Our Advantages
- NORSOK M-650 Qualified: Material qualification per NORSOK standards for offshore oil and gas projects
- ASTM G48 Testing: Critical pitting temperature (CPT) and crevice corrosion testing per ASTM G48 available for every heat
- Full NACE Compliance: NACE MR0175/ISO 15156 certified for H₂S-containing sour service environments
- Dual Sourcing: Premium Outokumpu mill material and cost-competitive TISCO domestic production options
- Technical Expertise: Application engineering support for material selection, welding procedures, and fabrication guidelines
Contact our specialty alloys team for a comprehensive quotation on 254 SMO super austenitic stainless steel sheets. Premium product with full corrosion test documentation provided.
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