Customization: | Available |
---|---|
Type: | Stainless Steel Pipes |
Standard: | ASTM, AISI, GB, DIN, GOST9941 |
Suppliers with verified business licenses
Audited by an independent third-party inspection agency
Material to UNS S31254 (and the other specifications listed in our technical datasheet) is described as a 6% Mo super austenitic stainless steel.
This alloy possesses a lower yield strength than that of duplex stainless steel (and much lower than that of super duplex steel) and pitting resistance which is comparable to super duplex stainless steel (such as UNS S32760 / S32750).
ASTM A213 A312 S31254 254SMO Stainless Steel Tubes Pipes Chemical Composition
Grade | C max | Mn max | P max | S max | Si max | Cr | Ni | Mo | N |
S31254 / 254SMO | 0.020 | 1.00 | 0.030 | 0.01 | 0.08 | 19.50-20.50 | 17.50-18.50 | 6.0-6.5 | 0.18-0.22 |
Grade | Status | Tensile Strength | Yield Strength | Elongation in 2 in. (min.) % | ||
MPa | ksi | MPa | ksi | |||
S31254 | T≤0.187in. (5mm) | 675 | 98 | 310 | 45 | 35 |
S31254 | T≤0.187in. (5mm) | 655 | 95 | 310 | 45 | 35 |
Density (kg/cm3) | Melting point | Specific Heat 0-100°C ( J/kg.K) | Thermal Conductivity at 20°C Btu/h ft ºF | Elastic Modulus (GPa) | Electrical resistivity [μΩ . cm] | Poissons Ratio | Shear Modulus |
8 g/cm3 0.289 lb/in3 | 1320-1390°C | 500 J.kg-1.°K-1 | 14 W/mK 97.2 BTU in/hr.ft².°F | 195 Gpa 28300 Ksi | 8.5 μohm/cm | 0.3 | 75 Gpa 10900 Ksi |
Grade | UNS No | WERKSTOFF NR. | EN | US |
254SMO | S3125 | 1.4547 | X1CrNiMoN20-18-7 | ASTM A479/A473, /A240 S31254 F44 |
Norminal Pipe Size | Outside Diameter | Wall Thicknesses Schedule ANSI/ASME B36.10M,B36.19M | ||||||||||||||||
DN(in.) | D | sch5s | sch10s | sch10 | sch20 | sch30 | sch40s | STD | sch40 | sch60 | sch80s | XS | sch80 | sch100 | sch120 | sch140 | sch160 | XXS |
1/8 | 10.3 | --- | 1.24 | --- | --- | --- | 1.73 | 1.73 | 1.73 | --- | 2.41 | 2.41 | 2.41 | --- | --- | --- | --- | --- |
1/4 | 13.7 | --- | 1.65 | --- | --- | --- | 2.24 | 2.24 | 2.24 | --- | 3.02 | 3.02 | 3.02 | --- | --- | --- | --- | --- |
3/8 | 17.1 | --- | 1.65 | --- | --- | --- | 2.31 | 2.31 | 2.31 | --- | 3.2 | 3.2 | 3.2 | --- | --- | --- | --- | --- |
1/2 | 21.3 | 1.65 | 2.11 | --- | --- | --- | 2.77 | 2.77 | 2.77 | --- | 3.73 | 3.73 | 3.73 | --- | --- | --- | 4.78 | 7.47 |
3/4 | 26.7 | 1.65 | 2.11 | --- | --- | --- | 2.87 | 2.87 | 2.87 | --- | 3.91 | 3.91 | 3.91 | --- | --- | --- | 5.56 | 7.82 |
1 | 33.4 | 1.65 | 2.77 | --- | --- | --- | 3.38 | 3.38 | 3.38 | --- | 4.55 | 4.55 | 4.55 | --- | --- | --- | 6.35 | 9.09 |
1¼ | 42.2 | 1.65 | 2.77 | --- | --- | --- | 3.56 | 3.56 | 3.56 | --- | 4.85 | 4.85 | 4.85 | --- | --- | --- | 6.35 | 9.7 |
1½ | 48.3 | 1.65 | 2.77 | --- | --- | --- | 3.68 | 3.68 | 3.68 | --- | 5.08 | 5.08 | 5.08 | --- | --- | --- | 7.14 | 10.15 |
2 | 60.3 | 1.65 | 2.77 | --- | --- | --- | 3.91 | 3.91 | 3.91 | --- | 5.54 | 5.54 | 5.54 | --- | --- | --- | 8.74 | 11.07 |
2½ | 73 | 2.11 | 3.05 | --- | --- | --- | 5.16 | 5.16 | 5.16 | --- | 7.01 | 7.01 | 7.01 | --- | --- | --- | 9.53 | 14.02 |
3 | 88.9 | 2.11 | 3.05 | --- | --- | --- | 5.49 | 5.49 | 5.49 | --- | 7.62 | 7.62 | 7.62 | --- | --- | --- | 11.13 | 15.24 |
3½ | 101.6 | 2.11 | 3.05 | --- | --- | --- | 5.74 | 5.74 | 5.74 | --- | 8.08 | 8.08 | 8.08 | --- | --- | --- | --- | --- |
4 | 114.3 | 2.11 | 3.05 | --- | --- | --- | 6.02 | 6.02 | 6.02 | --- | 8.56 | 8.56 | 8.56 | --- | 11.13 | --- | 13.49 | 17.12 |
5 | 141.3 | 2.77 | 3.4 | --- | --- | --- | 6.55 | 6.55 | 6.55 | --- | 9.53 | 9.53 | 9.53 | --- | 12.7 | --- | 15.88 | 19.05 |
6 | 168.3 | 2.77 | 3.4 | --- | --- | --- | 7.11 | 7.11 | 7.11 | --- | 10.97 | 10.97 | 10.97 | --- | 14.27 | --- | 18.26 | 21.95 |
8 | 219.1 | 2.77 | 3.76 | --- | 7.04 | 8.18 | 8.18 | 8.18 | 10.31 | 12.7 | 12.7 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 | 22.23 | |
10 | 273.1 | 3.4 | 4.19 | --- | 6.35 | 7.8 | 9.27 | 9.27 | 9.27 | 12.7 | 12.7 | 12.7 | 15.09 | 18.26 | 25.4 | 28.58 | 25.4 | |
12 | 323.9 | 3.96 | 4.57 | --- | 6.35 | 8.38 | 9.53 | 9.53 | 10.31 | 14.27 | 12.7 | 12.7 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 25.4 |
14 | 355.6 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | --- | 9.53 | 11.13 | 15.09 | --- | 12.7 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | |
16 | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | --- | 9.53 | 12.7 | 16.66 | --- | 12.7 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | |
18 | 457.2 | 4.19 | 4.78 | 6.35 | 7.92 | 11.13 | --- | 9.53 | 14.27 | 19.05 | --- | 12.7 | 23.83 | 29.36 | 34.93 | 39.67 | 45.24 | |
20 | 508 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | --- | 9.53 | 15.09 | 20.62 | --- | 12.7 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | |
22 | 558.8 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | --- | 9.53 | --- | 22.23 | --- | 12.7 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | |
24 | 609.6 | 5.54 | 6.35 | 6.35 | 9.53 | 14.27 | --- | 9.53 | 17.48 | 24.61 | --- | 12.7 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | |
26 | 660.4 | --- | --- | 7.92 | 12.7 | --- | --- | 9.53 | --- | --- | --- | 12.7 | ||||||
28 | 711.2 | --- | --- | 7.92 | 12.7 | 15.88 | --- | 9.53 | --- | --- | --- | 12.7 | ||||||
30 | 762 | 6.35 | 7.92 | 7.92 | 12.7 | 15.88 | --- | 9.53 | --- | --- | --- | 12.7 | ||||||
32 | 812.8 | --- | --- | 7.92 | 12.7 | 15.88 | 17.48 | 9.53 | 17.48 | --- | --- | 12.7 | ||||||
34 | 863.6 | --- | --- | 7.92 | 12.7 | 15.88 | 17.48 | 9.53 | 17.48 | --- | --- | 12.7 | ||||||
36 | 914.4 | --- | --- | 7.92 | 12.7 | 15.88 | 19.05 | 9.53 | 19.05 | --- | --- | 12.7 | ||||||
38 | 965.2 | --- | --- | --- | --- | --- | --- | 9.53 | --- | --- | --- | 12.7 | Note: sch5s,10s,40s,80s Used for steel pipe fittings | |||||
40 | 1016 | --- | --- | --- | --- | --- | --- | 9.53 | --- | --- | --- | 12.7 | ||||||
42 | 1066.8 | --- | --- | --- | --- | --- | --- | 9.53 | --- | --- | --- | 12.7 | ||||||
44 | 1117.6 | --- | --- | --- | --- | --- | --- | 9.53 | --- | --- | --- | 12.7 | ||||||
46 | 1168.4 | --- | --- | --- | --- | --- | --- | 9.53 | --- | --- | --- | 12.7 | ||||||
48 | 1219.2 | --- | --- | --- | --- | --- | --- | 9.53 | --- | --- | --- | 12.7 |
Summary | Standards |
Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes | ASTM A213 |
Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes | ASTM A249 |
Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service | ASTM A269 |
Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes | ASTM A312 |
Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications | ASTM A409 |
Standard Specification For Seamless Stainless Steel Mechanical Tubing | ASTM A511 |
Standard Specification For Seamless Stainless Steel Tubes,cold and hot finished | GOST9941-81 |
Standard | Outside Diameter Tolerance(mm) | Thickness Tolerance(mm) | Length Tolerance (mm) | |||
ASTM A269 | D<12.7 | ±0.13 | ±15% | +3.2 / -0 | ||
(12.7~38.1] | ±0.13 | ±10% | ||||
[38.1~88.9) | ±0.25 | +4.8 / -0 | ||||
[88.9~139.7) | ±0.38 | |||||
[139.7~203.2) | ±0.76 | |||||
ASTM A213 | D<25.4 | ±0.1 | D≤38.1 | +20%/ -0% | D≤50.80 | +3 / -0 |
[25.4~38.1] | ±0.15 | |||||
(38.1~50.8) | ±0.2 | D>38.1 | +22%/ -0% | D>50.8 | +5 / -0 | |
[50.8~63.5) | ±0.25 | |||||
[63.5~76.2) | ±0.30 | |||||
[76.2~101.6] | ±0.38 | |||||
(101.6~190.5] | +0.38 / -0.64 | |||||
(190.5~228.6] | +0.38 / -1.14 | |||||
ASTM A312 | [10.29~48.26] | +0.4 / -0.8 | 10.3~73 | +20% / -12.5% | +6 / -0 | |
88.9~457 T/D≤5% | +22.5% / -12.5% | |||||
(48.26~114.30] | ±0.80 | 88.9~457 T/D>5% | +15% / -12.5% | |||
(114.30~219.08] | +1.6 / -0.8 | 508above T/D<5% | +22.5% /-12.5% | |||
(219.08~457.20] | +2.4 / -0.8 | 508above T/D>5% | +15%/-12.5% | |||
ASTM A789 | D<12.7 | ±0.13 | ±15% | +3 / -0 | ||
[12.7 to 38.1) | ±0.13 | ±10% | ||||
[38.1 to 88.9) | ±0.25 | +5 / -0 | ||||
[88.9 to 139.7) | ±0.38 | |||||
[139.7 to 203.2) | ±0.76 | |||||
ГОСТ 9941-81 | [5~10] | Normal:±0.30 High:±0.20 Higher:±0.15 |
T:0.2 | Normal:±0.05mm; High:±0.03mm |
/ | |
T:0.3~0.4 | Normal:±0.07mm; High:±0.05mm |
|||||
T:0.5~1.0 | Normal:±0.15mm; High:±0.10mm |
|||||
[11~30] | Normal:±0.40 High:±0.30 Higher:±0.20 |
T:1.2~3.0 | Normal:+12.5% / -15%; High:±12.5%; Higher:+12.5% / -10% |
|||
T:3.5~7.0 | Normal:±12.5%; High:+12.5% / -10%; Higher:±10% |
|||||
[32~95] | Normal:±1.2% High:±1% Higher:±0.8% |
T:7.5~8.5 | Normal:+12.5% / -10%; Higher:±10% |
1.Q: Do you provide customized product services?
A: Of course, we can design and produce the products you need based on your specifications and drawings. For example: special dimensions, special controls, OEM, etc.
2.Q: Are you a manufacturer or trader?
A: We are manufacturers. We have our own factory to produce and process various kinds of stainless steel /nickel alloy pipes.
3.Q: Can we get the some samples?Is there a charge?
A: Yes, we will provide you with the samples you want. The samples are free of charge, but the customer may have to pay the freight.
4.Q: Can we visit your factory?
A: Of course, we welcome you to visit our factory on-site or visit our production line through online videos to learn more about our strength and quality. Once we have your schedule, we will arrange a professional sales team to follow up with you.
5.Q: How do you ensure the quality of the product?
A: All products must undergo three inspections throughout the entire manufacturing process, including production, cutting, and packaging. The factory inspection report is provided with the goods. If necessary, third-party inspections such as SGS can be accepted.
6.Q: What is your delivery time?
A: Different products and procurement quantities have different delivery times. The product will be delivered as soon as possible on the basis of quality assurance. Usually, if the goods are in stock, it takes 3-10 days. Alternatively, if the goods are out of stock, it will take 25 to 45 days.
7.Q: Can you arrange shipment?
A: Of course, we have freight forwarders who have been cooperating for many years. We are VIP and can provide you with the most favorable prices and professional services.
8.Q: What if I don't have import experience?
A: We have rich export experience. As long as you have an import license, please leave the rest to us! We will help you choose the most suitable transportation service to safely and accurately deliver the product to the place where it is needed.