SMO 254 Tubing is a type of high-alloy austenitic stainless steel specially designed for use in aggressive chloride-bearing media, such as seawater. It is fabricated to resist pitting and crevice corrosion, making it an excellent choice for harsh environments.
The tubing is made from austenitic stainless steel with increased molybdenum and nitrogen content. This composition makes it ideal for use in offshore production platforms and oil rigs with a high concentration of aggressive chloride. Additionally, the tubes are known as UNS S31254 Tubes and can be solution-canned after cold working to achieve maximum SCC resistance.
SMO 254 Tubing is supplied in heat-treated form, but treatment may be necessary if additional processing is required. The tubing is widely used where steel features and corrosion resistance are crucial. It combines molybdenum and nitrogen alloyed super austenitic stainless steel with low carbon content.
Table of Content
Properties
SMO 254 Instrumentation valves have several outstanding qualities, including higher strength than conventional austenitic stainless steels and excellent resistance to harsh corrosive environments. This material has twice the strength of the conventional steel series. It can withstand diverse concentrations of corrosive substances, such as Acetic acid, Ammonium Hydroxide, Citric Acid, Fluosilicic acid, formic acid, and Hydrochloric acid. It can also resist Lactic acid, Nitric acid, oxalic acid, Phosphoric acid, Sodium Hydroxide, and extreme Seawater environments, where conventional steels like 316L, 904L, and duplex 2205 steel may fail. Additionally, SMO 254 Fasteners has high sulfide stress crack resistance, making it an ideal material for harsh environments.
Applications
SMO 254 Instrumentation valves find application in various industries, including seawater handling, pulp bleaching plants, gas cleaning systems, tanks, and pipelines for chemicals with high halide content corrosion resistance. These valves are used for seawater cooling, cooling water pipes, ballast water systems, firefighting systems, hydraulic and instrumentation tubing kits, and more.
Kalp Industries is a renowned manufacturer and supplier of high-quality SMO 254 Tubing. The Tubings are manufactured from the best quality raw materials procured from an austenitic dealer and are produced as per the customers’ required specifications.We are also the biggest stockists of SMO 254 Ferrule Fittings that are widely used in a variety of applications.
Specifications | ASTM A213, A269, A249, A511, A554 / ASME SA213, SA269, SA249, SA511, SA554 |
Dimensional specification | ANSI/ASME B36.19M, ANSI/ASME B36.10M |
Seamless Tube Size | 1 / 2″ NB – 16″ NB |
Welded Tube Size | 1 / 2″ NB – 24″ NB |
Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
Manufacturing Shapes | Hydraulic, Round, Rectangle, Square, Hex, Honed |
Manufacturing Techniques | Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded |
Schedule Thickness Range | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
Tubes End Types | Plain End, Beveled End, Treaded One End, TBE (Treaded Both Ends) |
Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
Surface Finish | No.1, No.4, No.8 Mirror Finish, 2B |
Value Added Services | Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing |
STANDARD | WERKSTOFF NR. | UNS | JIS | SIS | GOST | AFNOR | EN |
SMO 254 | 1.4547 | S31254 | – | 2378 | – | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 |
TUBE O.D. | WALL THICKNESS (INCHES) | |||||||||||||||||||||||||
TUBE GAUGE | ||||||||||||||||||||||||||
00 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | |
TUBE I.D. | ||||||||||||||||||||||||||
0.380 | 0.340 | 0.300 | 0.284 | 0.259 | 0.238 | 0.220 | 0.203 | 0.180 | 0.165 | 0.148 | 0.134 | 0.120 | 0.109 | 0.095 | 0.083 | 0.072 | 0.065 | 0.058 | 0.049 | 0.042 | 0.035 | 0.032 | 0.028 | 0.025 | 0.022 | |
1/4″ | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.010 | 0.032 | 0.060 | 0.084 | 0.106 | 0.120 | 0.134 | 0.152 | 0.166 | 0.180 | 0.186 | 0.194 | 0.200 | 0.206 |
3/8″ | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.015 | 0.045 | 0.079 | 0.107 | 0.135 | 0.157 | 0.185 | 0.209 | 0.231 | 0.245 | 0.259 | 0.277 | 0.291 | 0.305 | 0.311 | 0.319 | 0.325 | 0.331 |
1/2″ | N/A | N/A | N/A | N/A | N/A | 0.024 | 0.060 | 0.094 | 0.140 | 0.170 | 0.204 | 0.232 | 0.260 | 0.282 | 0.310 | 0.334 | 0.356 | 0.370 | 0.384 | 0.402 | 0.416 | 0.430 | 0.436 | 0.444 | 0.450 | 0.456 |
5/8″ | N/A | N/A | 0.025 | 0.057 | 0.107 | 0.149 | 0.185 | 0.219 | 0.265 | 0.295 | 0.329 | 0.357 | 0.385 | 0.407 | 0.435 | 0.459 | 0.481 | 0.495 | 0.509 | 0.527 | 0.541 | 0.555 | 0.561 | 0.569 | 0.575 | 0.581 |
3/4″ | N/A | 0.070 | 0.150 | 0.182 | 0.232 | 0.274 | 0.310 | 0.344 | 0.390 | 0.420 | 0.454 | 0.482 | 0.510 | 0.532 | 0.560 | 0.584 | 0.606 | 0.620 | 0.634 | 0.652 | 0.666 | 0.680 | 0.686 | 0.694 | 0.700 | 0.706 |
7/8″ | 0.115 | 0.195 | 0.275 | 0.307 | 0.357 | 0.399 | 0.435 | 0.469 | 0.515 | 0.545 | 0.579 | 0.607 | 0.635 | 0.657 | 0.685 | 0.709 | 0.731 | 0.745 | 0.759 | 0.777 | 0.791 | 0.805 | 0.811 | 0.819 | 0.825 | 0.831 |
1″ | 0.240 | 0.320 | 0.400 | 0.432 | 0.482 | 0.524 | 0.560 | 0.594 | 0.640 | 0.670 | 0.704 | 0.732 | 0.760 | 0.782 | 0.810 | 0.834 | 0.856 | 0.870 | 0.884 | 0.902 | 0.916 | 0.930 | 0.936 | 0.944 | 0.950 | 0.956 |
1 1/8″ | 0.365 | 0.445 | 0.525 | 0.557 | 0.607 | 0.649 | 0.685 | 0.719 | 0.765 | 0.795 | 0.829 | 0.857 | 0.885 | 0.907 | 0.935 | 0.959 | 0.981 | 0.995 | 1.009 | 1.027 | 1.041 | 1.055 | 1.061 | 1.069 | 1.075 | 1.081 |
1 1/4″ | 0.490 | 0.570 | 0.650 | 0.682 | 0.732 | 0.774 | 0.810 | 0.844 | 0.890 | 0.920 | 0.954 | 0.982 | 1.010 | 1.032 | 1.060 | 1.084 | 1.106 | 1.120 | 1.134 | 1.152 | 1.166 | 1.180 | 1.186 | 1.194 | 1.200 | 1.206 |
1 1/2″ | 0.740 | 0.820 | 0.900 | 0.932 | 0.982 | 1.024 | 1.060 | 1.094 | 1.140 | 1.170 | 1.204 | 1.232 | 1.260 | 1.282 | 1.310 | 1.334 | 1.356 | 1.370 | 1.384 | 1.402 | 1.416 | 1.430 | 1.436 | 1.444 | 1.450 | 1.456 |
1 3/4″ | 0.990 | 1.070 | 1.150 | 1.182 | 1.232 | 1.274 | 1.310 | 1.344 | 1.390 | 1.420 | 1.454 | 1.482 | 1.510 | 1.532 | 1.560 | 1.584 | 1.606 | 1.620 | 1.634 | 1.652 | 1.666 | 1.680 | 1.686 | 1.694 | 1.700 | 1.706 |
2″ | 1.240 | 1.320 | 1.400 | 1.432 | 1.482 | 1.524 | 1.560 | 1.594 | 1.640 | 1.670 | 1.704 | 1.732 | 1.760 | 1.782 | 1.810 | 1.834 | 1.856 | 1.870 | 1.884 | 1.902 | 1.916 | 1.930 | 1.936 | 1.944 | 1.950 | 1.956 |
2 1/4″ | 1.490 | 1.570 | 1.650 | 1.682 | 1.732 | 1.774 | 1.810 | 1.844 | 1.890 | 1.920 | 1.954 | 1.982 | 2.010 | 2.032 | 2.060 | 2.084 | 2.106 | 2.120 | 2.134 | 2.152 | 2.166 | 2.180 | 2.186 | 2.194 | 2.200 | 2.206 |
2 1/2″ | 1.740 | 1.820 | 1.900 | 1.932 | 1.982 | 2.024 | 2.060 | 2.094 | 2.140 | 2.170 | 2.204 | 2.232 | 2.260 | 2.282 | 2.310 | 2.334 | 2.356 | 2.370 | 2.384 | 2.402 | 2.416 | 2.430 | 2.436 | 2.444 | 2.450 | 2.456 |
2 3/4″ | 1.990 | 2.070 | 2.150 | 2.182 | 2.232 | 2.274 | 2.310 | 2.344 | 2.390 | 2.420 | 2.454 | 2.482 | 2.510 | 2.532 | 2.560 | 2.584 | 2.606 | 2.620 | 2.634 | 2.652 | 2.666 | 2.680 | 2.686 | 2.694 | 2.700 | 2.706 |
3″ | 2.240 | 2.320 | 2.400 | 2.432 | 2.482 | 2.524 | 2.560 | 2.594 | 2.640 | 2.670 | 2.704 | 2.732 | 2.760 | 2.782 | 2.810 | 2.834 | 2.856 | 2.870 | 2.884 | 2.902 | 2.916 | 2.930 | 2.936 | 2.944 | 2.950 | 2.956 |
3 1/4″ | 2.490 | 2.570 | 2.650 | 2.682 | 2.732 | 2.774 | 2.810 | 2.844 | 2.890 | 2.920 | 2.954 | 2.982 | 3.010 | 3.032 | 3.060 | 3.084 | 3.106 | 3.120 | 3.134 | 3.152 | 3.166 | 3.180 | 3.186 | 3.194 | 3.200 | 3.206 |
3 1/2″ | 2.740 | 2.820 | 2.900 | 2.932 | 2.982 | 3.024 | 3.060 | 3.094 | 3.140 | 3.170 | 3.204 | 3.232 | 3.260 | 3.282 | 3.310 | 3.334 | 3.356 | 3.370 | 3.384 | 3.402 | 3.416 | 3.430 | 3.436 | 3.444 | 3.450 | 3.456 |
3 3/4″ | 2.990 | 3.070 | 3.150 | 3.182 | 3.232 | 3.274 | 3.310 | 3.344 | 3.390 | 3.420 | 3.454 | 3.482 | 3.510 | 3.532 | 3.560 | 3.584 | 3.606 | 3.620 | 3.634 | 3.652 | 3.666 | 3.680 | 3.686 | 3.694 | 3.700 | 3.706 |
4″ | 3.240 | 3.320 | 3.400 | 3.432 | 3.482 | 3.524 | 3.560 | 3.594 | 3.640 | 3.670 | 3.704 | 3.732 | 3.760 | 3.782 | 3.810 | 3.834 | 3.856 | 3.870 | 3.884 | 3.902 | 3.916 | 3.930 | 3.936 | 3.944 | 3.950 | 3.956 |
4 1/4″ | 3.490 | 3.570 | 3.650 | 3.682 | 3.732 | 3.774 | 3.810 | 3.844 | 3.890 | 3.920 | 3.954 | 3.982 | 4.010 | 4.032 | 4.060 | 4.084 | 4.106 | 4.120 | 4.134 | 4.152 | 4.166 | 4.180 | 4.186 | 4.194 | 4.200 | 4.206 |
4 1/2″ | 3.740 | 3.820 | 3.900 | 3.932 | 3.982 | 4.024 | 4.060 | 4.094 | 4.140 | 4.170 | 4.204 | 4.232 | 4.260 | 4.282 | 4.310 | 4.334 | 4.356 | 4.370 | 4.384 | 4.402 | 4.416 | 4.430 | 4.436 | 4.444 | 4.450 | 4.456 |
4 3/4″ | 3.990 | 4.070 | 4.150 | 4.182 | 4.232 | 4.274 | 4.310 | 4.344 | 4.390 | 4.420 | 4.454 | 4.482 | 4.510 | 4.532 | 4.560 | 4.584 | 4.606 | 4.620 | 4.634 | 4.652 | 4.666 | 4.680 | 4.686 | 4.694 | 4.700 | 4.706 |
5″ | 4.240 | 4.320 | 4.400 | 4.432 | 4.482 | 4.524 | 4.560 | 4.594 | 4.640 | 4.670 | 4.704 | 4.732 | 4.760 | 4.782 | 4.810 | 4.834 | 4.856 | 4.870 | 4.884 | 4.902 | 4.916 | 4.930 | 4.936 | 4.944 | 4.950 | 4.956 |
5 1/4″ | 4.490 | 4.570 | 4.650 | 4.682 | 4.732 | 4.774 | 4.810 | 4.844 | 4.890 | 4.920 | 4.954 | 4.982 | 5.010 | 5.032 | 5.060 | 5.084 | 5.106 | 5.120 | 5.134 | 5.152 | 5.166 | 5.180 | 5.186 | 5.194 | 5.200 | 5.206 |
Wall Thickness | Monel Tube Sizes ( O.D.) |
---|---|
.010 | 1/16″ , 1/8″ , 3/16″ |
.020 | 1/16″ , 1/8″ , 3/16″ , 1/4″ , 5/16″ , 3/8″ |
.012 | 1/8″ |
.016 | 1/8″ , 3/16″ |
.028 | 1/8″ , 3/16″ , 1/4″ , 5/16″ , 3/8″ , 1/2″ , 3/4″ , 1″ , 1 1/2″ , 2″ |
.035 | 1/8″ , 3/16″ , 1/4″ , 5/16″ , 3/8″ , 7/16″ , 1/2″ , 16″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/4″ , 1 1/2″ , 1 5/8″ , 2″ , 2 1/4″ |
.049 | 3/16″ , 1/4″ , 5/16″ , 3/8″ , 1/2″ , 16″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/8″ , 1 1/4″ , 1 1/2″ , 1 5/8″ , 2″ , 2 1/4″ |
.065 | 1/4″ , 5/16″ , 3/8″ , 1/2″ , 16″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/4″ , 1 1/2″ , 1 5/8″ , 1 3/4″ , 2″ , 2 1/2″ , 3″ |
.083 | 1/4″ , 3/8″ , 1/2″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/4″ , 1 1/2″ , 1 5/8″ , 1 7/8″ , 2″ , 2 1/2″ ,3″ |
.095 | 1/2″ , 5/8″ , 1″ , 1 1/4″ , 1 1/2″ , 2″ |
.109 | 1/2″ , 3/4″ , 1″ , 1 1/4″ , 1 1/2″ , 2″ |
.120 | 1/2″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/4″ , 1 1/2″ , 2″ , 2 1/4″ , 2 1/2″ , 3″ |
.125 | 3/4″ , 1″ , 1 1/4″ , 1 1/2″ , 2″ , 3″ , 3 1/4″ |
.134 | 1″ |
.250 | 3″ |
.375 | 3 1/2″ |
Tube O.D. (in.) | Wall Thickness of Tube (inches) | |||||||
.028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
Working Pressure (psig) | ||||||||
1/8 | 7900 | 10100 | ||||||
1/4 | 3700 | 4800 | 7000 | 9500 | ||||
5/16 | 3700 | 5400 | 7300 | |||||
3/8 | 3100 | 4400 | 6100 | |||||
1/2 | 2300 | 3200 | 4400 | |||||
3/4 | 2200 | 3000 | 4000 | 4600 | ||||
1 | 2200 | 2900 | 3400 | 3900 | 4300 |
Grade | % | Ni | Cr | Mo | Cu | N | C | Mn | Si | P | S |
SMO 254 | Min. | 17.5 | 19.5 | 6 | 0.5 | 0.18 | |||||
Max. | 18.5 | 20.5 | 6.5 | 1 | 0.22 | 0.02 | 1 | 0.8 | 0.03 | 0.01 |
Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
SMO 254 | 8.0 g/cm3 | 1320-1390 | 650 | 300 | 35 % |
We Serve Application Industry
Fastener applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
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