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Alloy 254 Round ASTM A182 F44 Flat Alloy 254 Forged Bars
1250.0 INR/Piece
Product Details:
- Tolerance H9, H10, H11, K9 or as specified
- Type Round Bar, Flat Bar, Forged Bar
- Application Chemical processing, saltwater handling, oil & gas industries
- Specific Use High chloride environments, seawater resistance, pressure vessel parts
- Standard ASTM A182 F44
- Technique Forged
- Diameter 10mm - 400mm
- Click to view more
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Alloy 254 Round ASTM A182 F44 Flat Alloy 254 Forged Bars Price And Quantity
- 1 Piece
- 1250.0 INR/Piece
Alloy 254 Round ASTM A182 F44 Flat Alloy 254 Forged Bars Product Specifications
- Up to 6000mm or customized
- H9, H10, H11, K9 or as specified
- Chemical processing, saltwater handling, oil & gas industries
- Round Bar, Flat Bar, Forged Bar
- High chloride environments, seawater resistance, pressure vessel parts
- 254 SMO
- ASTM A182 F44
- Forged
- 10mm - 400mm
- Bright, Black, Polished
- Alloy 254 (UNS S31254)
- Hot Forged / Rolled, Cold Drawn
- 650 MPa
- 1350C - 1380C
- Peeled, Turned, Polished
- Excellent, especially against pitting and crevice corrosion
- Solution Annealed
- Standard export packing; wooden cases or as required
- 8.0 g/cm3
- Max 300 HB
- 35%
- 300 MPa
Product Description
Alloy 254 (commonly referred to as SMO 254 or by its unified numbering designation UNS S31254) is a high-end, 6% Molybdenum (6-Moly) super austenitic stainless steel.
The standard ASTM A182 F44 specifically governs the material requirements for forged or rolled alloy and stainless steel products intended for high-temperature and highly corrosive pressure services. This metallurgy delivers a Pitting Resistance Equivalent Number (PREN) 42.5, which is nearly double that of standard 316L stainless steel, rendering it virtually immune to chloride-induced pitting, crevice corrosion, and stress corrosion cracking.
Core Technical Specifications (ASTM A182 F44)
The mechanical performance and chemical layout of this grade are highly regulated to support severe engineering loads:
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Chemical Profile: Optimized with 19.5%20.5% Chromium, 17.5%18.5% Nickel, 6.0%6.5% Molybdenum, and augmented with Nitrogen (0.18%0.25%) to boost yield capabilities.
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Mechanical Integrity: Delivers a robust minimum Tensile Strength of 650 MPa (94 ksi) and a minimum 0.2% Proof Yield Strength of 300 MPa (43 ksi).
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Work Hardening: Due to its low sulfur content and fast work-hardening rate, this material requires heavy-duty machinery, slow processing speeds, and crisp tooling setups during machining.
Available Industrial Bar Options
Depending on your structural assembly or manufacturing blueprint, Alloy 254 / F44 bars are primarily sorted into three structural forms:
1. Round Bars (Precision Component Machining)
Engineered primarily as feed stock for high-speed turning centers to forge pump shafts, marine valves, and heavy-duty piston rods.
The 254 SMO Round Bars - ASTM A276, A279, A479 covers structural stock scaling from 4 mm to 350 mm in diameter. It features multiple surface finishessuch as bright polished, black, or rough-turnedand conforms to NACE MR0175/ISO 15156 for oil and gas infrastructure.
2. Flat Bars (Structural Frameworks & Bracing)
Designed for structural reinforcement, chemical processing equipment linings, and base plates. These are typically stocked in thickness ranges from 2 mm up to 150 mm and widths up to 500 mm. They offer a reliable foundation in marine scrubbing towers and paper mill bleach plants where corrosive pooling fluids destroy conventional metals.
3. Forged Bars (High-Pressure Integrity)
Forged blocks or bars undergo intense hot-working manipulation at temperatures ranging between 982C and 1149C, followed by a precision solution annealing and water quench. This refines the grain structure of the 6-Moly matrix, making it ideal for severe stress environments like desalination high-pressure pipelines or subsea manifolds.
Summary Matrix for Procurement Selection
| Dimension Required | Optimal Form | Primary Industrial Purpose |
| Diameter: 4mm to 350mm | 254 SMO Round Bars | Automatic lathe machining of fasteners, valve pins, and maritime fittings. |
| Thickness: 2mm to 150mm | F44 Flat Bars | Structural framing, reinforcement braces, and industrial tank support plates. |
| Diameter: Over 150mm | Alloy 254 Forged Bars | High-impact subsea blocks, flange hubs, and critical pressure-vessel components. |
Exceptional Performance in Challenging Environments
Alloy 254 Round ASTM A182 F44 bars are engineered for strength and resilience, delivering core durability to withstand corrosive atmospheres. The solution-annealed structure and precise forging techniques maximize resistance against pitting and stress corrosion, making them indispensable for saltwater handling and chemical processing.
Versatile Applications and Customization
Designed for flexibility, these bars are available in round, flat, and forged forms with diameters from 10mm up to 400mm and lengths up to 6000mm, or custom specifications. Their high chloride tolerance suits pressure vessel parts, desalination projects, and other exacting uses in industrial settings.
Quality Assurance and Packaging
ASTM A182 F44 bars meet stringent industry standards for mechanical and metallurgical integrity. Each piece is supplied with a variety of polished or turned finishes and packaged securely in standard wooden cases or as per client requirements, ensuring protection during domestic or international transit.
FAQ's of Alloy 254 Round ASTM A182 F44 Flat Alloy 254 Forged Bars:
Q: What industries benefit most from using Alloy 254 ASTM A182 F44 forged bars?
A: Industries such as chemical processing, oil & gas, marine engineering, and desalination plants benefit significantly from Alloy 254 bars due to their high resistance to pitting and crevice corrosion in chloride-rich and seawater environments.Q: How are Alloy 254 F44 bars processed for optimal performance?
A: These bars are produced through a hot forging or rolling process, followed by solution annealing to enhance corrosion resistance and mechanical properties. The surface may be peeled, turned, or polished based on customer requirements.Q: Where can Alloy 254 Round and Flat Forged Bars be used?
A: They are widely used in environments that demand excellent chloride resistance, such as pressure vessels, heat exchangers, desalination units, and equipment exposed to seawater or aggressive chemicals.Q: What is the advantage of the solution annealed condition in these bars?
A: Solution annealing ensures a homogeneous microstructure, which optimizes the material's corrosion resistance and mechanical strength, making it ideal for severe service conditions.Q: When should I choose Alloy 254 bars over conventional stainless steel bars?
A: Select Alloy 254 bars when your application involves exposure to high chloride or saltwater environments, where standard stainless steels might fail due to localized corrosion.Q: What packaging options are available for Alloy 254 bars?
A: These bars are typically packed in sturdy wooden export cases or customized packaging solutions to safeguard them during transport and storage, accommodating both domestic and international shipping needs.Q: How can I customize the dimensions and finish of Alloy 254 forged bars?
A: Alloy 254 bars can be ordered in a range of diameters, lengths (up to 6000mm), tolerances (H9, H10, H11, K9 or as specified), and finishes-such as bright, black, or polished-to suit specific project requirements.Tell us about your requirement
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