Alloy 254smo Tube
1. Standard: ASTM A312, ASME SA 312
2. Size: 1/2''~48''
3. Thickness: SCH5~SCHXXS
4. Service: Cutting, Welding, Fabricated, Customized
254SMO pipelines achieve a balance of corrosion resistance, strength and economy in chloride and acidic media through the ternary collaborative design of 6% molybdenum-high nitrogen-ultra-low carbon, becoming a key material for connecting standard stainless steel and nickel-based alloys. HT PIPE is a SS 254smo Pipe supplier with 15+ export experience. Contact us for more information and quotes for free!
alloy 254smo Chemical composition
The core components of 254SMO are chromium (19.5%-20.5%), nickel (17.5%-18.5%), molybdenum (6.0%-6.5%), copper (0.5%-1.0%) and nitrogen (0.18%-0.22%), and the carbon content is strictly controlled at ≤0.02%.
254 smo steel Physical properties
Density 8.24 g/cm³, melting point 1320-1390℃, thermal expansion coefficient 16.5×10⁻⁶/K (20-100℃), thermal conductivity 14-19 W/(m·K), low thermal conductivity suitable for heat exchange scenarios.
en 1.4547 Mechanical properties
Room temperature performance: tensile strength ≥650 MPa, yield strength ≥310 MPa, elongation ≥40%, hardness 182-223 HB. Tensile strength below 550℃ remains ≥400 MPa, but the long-term use temperature needs to be limited to 550℃ to avoid precipitation of intermetallic phases (χ phase, σ phase) leading to embrittlement.
SMO 254 / UNS S31254 Tubes Specifications
| Specifications | ASTM A 269 ASME SA 269 / ASTM A 249 ASME SA 249 |
| Dimensions | ASTM, ASME and API |
| Size | 3/4″ – 12″ |
| Thickness | 20 Swg, 18 Swg, 16 Swg, 14 Swg, 12 Swg, 10 Swg, & Sch10, Sch40, Sch80 etc. |
| Type | Seamless / ERW / Welded / Fabricated |
| Form | Round Tubes, Custom Tubes, Square Tubes, Rectangular Tubes, "U" Shape, Hydraulic Tubes |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
sa 240 uns s31254 Welding
Prioritize gas tungsten arc welding (GTAW), matching ERNiCrMo-3 welding wire (nickel-based welding materials compensate for ferritization tendency).
a269 s31254 Cold processing
single deformation of shrinking/expansion ≤10%, solid solution treatment between passes (1050-1150℃ water quenching) eliminates work hardening.
s31254 stainless steel Hot bending forming
temperature range 900-1175℃, water cooling after forming to avoid staying in the 650-1000℃ range.
Application of stainless steel 254smo pipe
Oil and gas: submarine pipelines, downhole tools for acid gas wells.
Chemical equipment: sulfuric acid reactors, phosphoric acid evaporators, pickling equipment.
Nuclear industry: containers and pipelines for nuclear waste treatment systems.
Marine engineering: seawater desalination devices, heat exchangers.
Environmental protection: key components of flue gas desulfurization (FGD) systems.
FAQ
Q: About 254smo pipe prices?
A: Prices from ranges $2 - $10 per kilogram, vary depending on size, wall thickness, supplier etc.
Q: How long does your delivery time take?
A: Delivery time is within 5-21 days
Q: Is There Sample Service?
A: Samples Are Provided Free Of Charge
Q: What Is The Minimum Order Quantity?
A: No Minimum Order Quantity
Q: How to pack the products?
A: The inner layer has a waterproof paper outer layer and is fixed with a fumigation wooden pallet.
Q: Exported Countries
A: Brazil, South Africa, Indonesia, India, Singapore, Malaysia, Iran, Russia, UAE, Chile, Laos, etc
Q: Can we visit your factory?
A: Of course, you are always welcome!
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