254 SMO Pipe (6 Moly) alloy is rich in chromium, molybdenum and nitrogen, with additions of nickel and copper, and has excellent resistance to pitting and crevice corrosion, PRE = ≥42.5. A312 UNS S31254 duplex have a great influencing potential and ductility at ambient and sub-zero temperatures. EN 1.4547 stainless steel pipe produces a weld that has better corrosion resistant properties than its parent metal due to it being over alloyed. SMO 254 Pipe Manufacturers supply these pipes in various shapes and dimensions. Sch40 254 Smo Square Pipe and Alloy 254 Round Pipe are a few examples.
Factory 254 SMO Pipe Seamless and Welded Pipe Supplier Manufacturer, We provide Customized astm a312 uns s31254 size, Contact us to get price list, Sizes & Free Sample!
Types of ss 254 smo Tube
1. Seamless Tubes
2. Welded Tubes
3. ERW (Electric Resistance Welded) Tubes
4. EFW pipe
5. Heat Exchanger Tubes
6. Instrumentation Tubes
UNS S31254 254 Smo Tubes Specifications
Specification of 254smo stainless steel pipe according to standards: ASTM A312, ASTM A213 and ASTM A269. These standards specify the seamless, welded, and cold worked types of pipes. They outline the dimensions, mechanical properties, and chemical composition of the pipes with sizes ranging from ¼ inch to 48 inches.
|
Specifications |
ASTM A213, ASTM A269, ASTM A312 |
|
Dimensions |
ASTM, ASME and API |
|
Size |
1/4″ – 48″ |
| OD | 6 mm to 101.6 mm (or custom) |
|
Thickness |
Sch 5, Sch 10, Sch 40, Sch 80 etc. |
| Surface Finish | Pickled, bright annealed, polished |
|
Type |
Seamless / ERW / Welded / EFW / Fabricated / LSAW Tubes |
|
Form |
Round, Square, Rectangular, Hydraulic Etc |
|
Length |
Single Random, Double Random & Cut Length. |
|
End |
Plain End, Beveled End, Treaded |
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s31254 / 1.4547 / 254 smo chemical composition
| Grade | C | Mn | Si | P | S | Cr | Cu | Ni | Mo | Fe | |
| 254 SMO | min | – | – | – | – | – | 19.5 | 0.5 | 17.5 | 6 | – |
| max | 0.02 | 1 | 0.8 | 0.03 | 0.01 | 20.5 | 1 | 18.5 | 6.5 | – | |
ASTM A312 254 SMO Tubes Mechanical Properties
|
Grade |
S31254 |
|
Tensile Strength (MPa) min |
650 |
|
Yield Strength 0.2% Proof (MPa) min |
300 |
|
Elongation (% in 50mm) min |
35 |
6mo uns s31254 pipe Physical Properties
|
Density |
8.0 g/cm3 |
|
Melting Point |
1320-1390 ℃ |
254 SMO Tube Equivalent Grades
| Grade | UNS No | Old British | Euronorm | SIS | Japanese JIS | GOST | ||
| BS | En | No | AFNOR | |||||
| SMO 254 | S31254 | – | X1CrNiMoCuN20-18-7 | 1.4547 | Z1 CNDU 20.18.06Az | 2378 | – | – |
254smo pipe suppliers manufacturers fabrication
When compared to standard stainless steel A213 UNS S31254 Seamless Tube has a high molybdenum content that increases the oxidation rate during annealing and results in a rougher surface finish after pickling.
Alloy 254 High-Pressure Tubes are stronger than common austenitic grades and are easy to weld. 254 SMO UNS S31254 is considered to be a cost-effective substitute for the alloy with high nickel content and titanium.
To attain maximum corrosion resistant properties A269 S31254 Tube requires post-processing annealing.
HT 254 Smo Pipe are available in ATSM B163/ B167, AMS 5580, BS3074 specifications.
material smo 254 Heat treatment
Solution annealing: 1150–1200°C (2100–2190°F), quenching in water. Thin-walled tubes min. 1130°C (2060°F), quenching in air/water.
astm a312 s31254 pipe Dimensional Tolerances
|
OD |
OD Tolerance |
Wall Tolerance |
|
≤ .500″ |
± 0.005" |
± 15% |
|
0.500″–0.750″ |
± 0.005" |
± 10% |
Applications For 254 smo Stainless Steel Pipe
1. Chemical Processing
2. Oil and Gas Industry
3. Pulp and Paper Industry
4. Food Processing Industries
5. Marine Engineering
6. Power Generation
alloy 254 smo Tubing Material Test Certificate
EN10204 3.1, 3.2
Laboratory Test Certificate From NABL Approved Lab
Under Third Party Inspection Agency Like SGS, TUV, ABS, ETC
100% radiographic inspection report
100% PMI
Heat treatment chart
Surface roughness and dimensional measurements
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