What Is 409 Stainless Steel Pipe?
Stainless steel 409 pipes are part of a ferritic steel grade. The pipes of this grade contain low alloying material with a small content of titanium used to stabilize them. The versatile range exhibits superior corrosion resistance properties and has a temperature range up to 675 degrees C. The robust SS 409 pipes showcase excellent mechanical properties and can be readily welded in place following standard welding procedures.
Can 409 Stainless Be Polished?
The SS 409 can be polished to give it an aesthetically pleasing appeal. The polished grade showcases a bright finish that doesn’t allow corrosive media to form on the piping modules.
What Type Of Material Is 409
The 409 grade of stainless steel is a heat-resisting ferritic grade that has good oxidation and corrosion resistance properties.
Is 409 Stainless Steel Good For Exhaust Pipe
The 409 stainless steel grade is primarily designed for use in the exhaust industry. The piping modules work well in elevated temperatures and protect the pipe against corrosive media across different stress-induced environments. The pipes in this grade have moderate strength and excellent formability, allowing them to be shaped precisely. Apart from this, the pipes are cheaper to produce, further making them a good choice for exhaust systems.
ASTM A312 Tp 409 Welded Pipe and SS 409 ERW Tube
Specifications | ASTM/ASME A 312/ SA 312 |
Size | 1/8″NB to 30″NB IN |
Dimensions | ASME, ASTM and API |
Schedule | Schedule20, Schedule30, Schedule40, STD, Schedule80, XS, Schedule60, Schedule80, Schedule120, Schedule140, Schedule160, XXS |
SS 409 Pipes | 1/2 NB to 16 NB |
Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
ERW 409 Pipes | 1/2 NB to 24 NB |
Form | “U” Shape, Custom Pipes, Round Pipes, Hydraulic Pipes |
EFW 409 Pipes | 6 NB to 100 NB |
End | Beveled End, Plain End, Treaded |
Length | Double Random, Single Random, & Cut Length. |
Grade | Si | C | Sl | Mg | Cr | Ph | Ni | Ti | |
---|---|---|---|---|---|---|---|---|---|
409 | Min | – | – | – | – | 10.5 | – | – | 6xC |
max | 1 | 0.08 | 0.045 | 1 | 11.75 | 0.045 | 0.5 | – |
Grade | Elongation % | Tensile Strength MPa (min) | Hardness (Brinell) MAX | Yield Strength 0.2% MPa(min) | Hardness (Rockwell B) MAX |
---|---|---|---|---|---|
409 | 20 | 380 | 207 | 207 | 95 |
STANDARD | AFNOR | WERKSTOFF NR. | KS | UNS | GOST | JIS | EN |
---|---|---|---|---|---|---|---|
SS 409 | – | 1.4512 | STS409 | S40900 | – | SUS409 | – |
NB Sizes | Schedule 5 | Schedule 10 | Schedule 40 | Schedule 80 | Schedule 160 |
---|---|---|---|---|---|
1 1/4″ | ✓ | ✓ | ✓ | ✓ | ✓ |
1/8″ | ✓ | ✓ | ✓ | ✓ | |
2″ | ✓ | ✓ | ✓ | ✓ | ✓ |
1/4″ | ✓ | ✓ | ✓ | ✓ | |
2 1/2″ | ✓ | ✓ | ✓ | ✓ | ✓ |
3/8″ | ✓ | ✓ | ✓ | ✓ | |
3″ | ✓ | ✓ | ✓ | ✓ | ✓ |
1/2″ | ✓ | ✓ | ✓ | ✓ | ✓ |
4″ | ✓ | ✓ | ✓ | ✓ | ✓ |
3/4″ | ✓ | ✓ | ✓ | ✓ | ✓ |
6″ | ✓ | ✓ | ✓ | ✓ | |
1″ | ✓ | ✓ | ✓ | ✓ | ✓ |
8″ | ✓ | ✓ | ✓ | ✓ | ✓ |
1 1/2″ | ✓ | ✓ | ✓ | ✓ | ✓ |
5″ | ✓ | ✓ | ✓ | ✓ | |
14″ | ✓ | ✓ | ✓ | ✓ | ✓ |
10″ | ✓ | ✓ | ✓ | ✓ | ✓ |
16″ | ✓ | ✓ | ✓ | ✓ | ✓ |
12″ | ✓ | ✓ | ✓ | ✓ | ✓ |
Wall | Sizes ( O.D.) |
---|---|
.095 | 1/2 , 5/8 , 1 , 1 1/4 , 1 1/2 , 2″ |
.010 | 1/16 , 1/8 , 3/16″ |
.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″ |
.020 | 1/16 , 1/8 , 3/16 , 1/4 , 5/16 , 3/8″ |
.109 | 1/2 , 3/4 , 1 , 1 1/4 , 1 1/2 , 2″ |
.012 | 1/8″ |
.120 | 1/2 , 5/8 , 3/4 , 7/8 , 1 , 1 1/4 , 1 1/2 , 2 , 2 1/4 , 2 1/2 , 3″ |
.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″ |
.125 | 3/4 , 1 , 1 1/4 , 1 1/2 , 2 , 3 , 3 1/4″ |
.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″ |
.134 | 1″ |
.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″ |
.375 | 3 1/2″ |
.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″ |
.250 | 3″ |
Grade | Elastic Modulus (GPa) | Specific Heat 0-100°C (J/kg.K) | Density (kg/m3) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Electrical Resistivity (nΩ.m) | Thermal Conductivity (W/m.K) | |||
---|---|---|---|---|---|---|---|---|---|
0-100°C | 0-538°C | 0-315°C | at 100°C | at 500°C | |||||
409 | 200 | 460 | 7800 | 11.0 | 12.4 | 11.7 | 600 | 25.8 | 27.5 |
Nominal size [inches] | Outside diameter [inches] | Outside diameter [mm] | Weight [lb/ft] | Weight [kg/m] | Wall thickness [inches] | Wall thickness [mm] |
16 | 16,000 | 406,4 | 192,43 | 286,64 | 1,219 | 30,96 |
4 | 4,500 | 114,3 | 19,00 | 28,32 | 0,438 | 11,13 |
14 | 14,000 | 355,6 | 150,79 | 224,65 | 1,094 | 27,79 |
5 | 5,563 | 141,3 | 27,04 | 40,28 | 0,500 | 12,7 |
20 | 20,000 | 508,0 | 296,37 | 441,49 | 1,500 | 38,10 |
6 | 6,625 | 168,3 | 36,39 | 54,20 | 0,562 | 14,27 |
22 | 22,000 | 559,0 | 353,61 | 527,02 | 1,625 | 41,28 |
8 | 8,625 | 219,1 | 60,71 | 90,44 | 0,719 | 18,26 |
24 | 24,000 | 610,0 | 429,39 | 640,03 | 1,812 | 46,02 |
10 | 10,750 | 273,0 | 89,29 | 133,06 | 0,844 | 21,44 |
18 | 18,000 | 457,0 | 244,14 | 363,56 | 1,375 | 34,93 |
12 | 12,750 | 323,8 | 125,49 | 186,97 | 1,000 | 25,4 |
Pipe Size (in) |
Nominal Thickness (in) mm |
Diameter (in) mm |
Volume (ft3/ft) |
Transverse Areas (in2) mm2 |
Length of Pipe (ft per sq. foot of surface) |
Number of Threads per inch of Screw | Weight | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
External | Internal | External | Steel | Internal | External Surface (ft) |
Internal Surface (ft) |
(lb/ft) | (kg/m) | ||||
5 | 0.26 | 5.563 | 5.05 | 0.1389 | 24.30 | 4.30 | 20.00 | 0.69 | 0.76 | 8 | 14.61 | 21.74 |
1/8 | 0.07 | 0.405 | 0.27 | 0.0004 | 0.13 | 0.07 | 0.06 | 9.43 | 14.20 | 27 | 0.24 | 0.36 |
4 | 0.24 | 4.500 | 4.03 | 0.0884 | 15.90 | 3.17 | 12.73 | 0.85 | 0.95 | 8 | 10.79 | 16.06 |
¼ | 0.09 | 0.540 | 0.36 | 0.0007 | 0.23 | 0.13 | 0.10 | 7.07 | 10.49 | 18 | 0.42 | 0.63 |
8 | 0.32 | 8.625 | 7.98 | 0.3552 | 58.42 | 8.40 | 50.02 | 0.44 | 0.48 | 8 | 28.55 | 42.49 |
3/8 | 0.09 | 0.675 | 0.49 | 0.0013 | 0.36 | 0.17 | 0.19 | 5.66 | 7.75 | 18 | 0.57 | 0.84 |
10 | 0.37 | 10.750 | 10.02 | 0.5476 | 90.76 | 11.90 | 78.85 | 0.36 | 0.38 | 8 | 40.48 | 60.24 |
½ | 0.11 | 0.840 | 0.62 | 0.0021 | 0.55 | 0.25 | 0.30 | 4.55 | 6.14 | 14 | 0.85 | 1.26 |
12 | 0.41 | 12.750 | 11.94 | 0.7763 | 127.64 | 15.74 | 111.90 | 0.30 | 0.32 | 8 | 53.60 | 79.77 |
¾ | 0.11 | 1.050 | 0.82 | 0.0037 | 0.87 | 0.33 | 0.53 | 3.64 | 4.64 | 14 | 1.13 | 1.68 |
6 | 0.28 | 6.625 | 6.07 | 0.2006 | 34.47 | 5.58 | 28.89 | 0.58 | 0.63 | 8 | 18.97 | 28.23 |
1 | 0.13 | 1.315 | 1.05 | 0.0060 | 1.36 | 0.49 | 0.86 | 2.90 | 3.64 | 11 ½ | 1.68 | 2.50 |
16 | 0.50 | 16.000 | 15.00 | 1.2230 | 201.05 | 24.35 | 176.70 | 0.24 | 0.25 | 8 | 78.00 | 116.08 |
1 ¼ | 0.14 | 1.660 | 1.38 | 0.0104 | 2.16 | 0.67 | 1.50 | 2.30 | 2.77 | 11 ½ | 2.27 | 3.38 |
14 | 0.44 | 14.000 | 13.13 | 0.9354 | 153.94 | 18.64 | 135.30 | 0.27 | 0.28 | 8 | 63.00 | 93.75 |
1 ½ | 0.15 | 1.900 | 1.61 | 0.0141 | 2.84 | 0.80 | 2.04 | 2.01 | 2.37 | 11 ½ | 2.72 | 4.04 |
18 | 0.56 | 18.000 | 16.88 | 1.5550 | 254.85 | 30.85 | 224.00 | 0.21 | 0.23 | 8 | 105.00 | 156.26 |
2 | 0.15 | 2.375 | 2.07 | 0.0233 | 4.43 | 1.08 | 3.36 | 1.61 | 1.85 | 11 ½ | 3.65 | 5.43 |
20 | 0.59 | 20.000 | 18.81 | 1.9260 | 314.15 | 36.15 | 278.00 | 0.19 | 0.20 | 8 | 123.00 | 183.05 |
2 ½ | 0.20 | 2.875 | 2.47 | 0.0333 | 6.49 | 1.70 | 4.79 | 1.33 | 1.55 | 8 | 5.79 | 8.62 |
24 | 0.69 | 24.000 | 22.63 | 2.7930 | 452.40 | 50.30 | 402.10 | 0.16 | 0.17 | 8 | 171.00 | 254.48 |
3 | 0.22 | 3.500 | 3.07 | 0.0513 | 9.62 | 2.23 | 7.39 | 1.09 | 1.25 | 8 | 7.58 | 11.27 |
3 ½ | 0.23 | 4.000 | 3.55 | 0.0687 | 12.56 | 2.68 | 9.89 | 0.95 | 1.08 | 8 | 9.11 | 13.56 |
SS Pipe Size(inches) | SS Pipe Schedule | Temperature(F) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
100 | 200 | 300 | 400 | 500 | 600 | 650 | 700 | 750 | ||
1 1/2″ | 40 | 2257 | 1947 | 1750 | 1608 | 1496 | 1425 | 1383 | 1354 | 1340 |
80 | 3182 | 2744 | 2466 | 2267 | 2108 | 2009 | 1949 | 1909 | 1889 | |
160 | 4619 | 3984 | 3580 | 3291 | 3060 | 2916 | 2829 | 2772 | 2743 | |
1″ | 40 | 3048 | 2629 | 2362 | 2171 | 2019 | 1924 | 1867 | 1824 | 1810 |
80 | 4213 | 3634 | 3265 | 3002 | 2791 | 2659 | 2580 | 2528 | 2501 | |
160 | 6140 | 5296 | 4759 | 4375 | 4068 | 3876 | 3761 | 3684 | 3646 | |
2″ | 40 | 1902 | 1640 | 1474 | 1355 | 1260 | 1201 | 1165 | 1141 | 1129 |
80 | 2747 | 2369 | 2129 | 1957 | 1820 | 1734 | 1682 | 1648 | 1631 | |
160 | 4499 | 3880 | 3486 | 3205 | 2980 | 2840 | 2755 | 2699 | 2671 | |
4″ | 40 | 1531 | 1321 | 1187 | 1091 | 1014 | 967 | 938 | 919 | 909 |
80 | 2213 | 1909 | 1715 | 1577 | 1466 | 1397 | 1355 | 1328 | 1314 | |
160 | 3601 | 3106 | 2791 | 2566 | 2386 | 2273 | 2206 | 2161 | 2138 | |
3″ | 40 | 1806 | 1558 | 1400 | 1287 | 1196 | 1140 | 1106 | 1084 | 1072 |
80 | 2553 | 2202 | 1979 | 1819 | 1691 | 1612 | 1564 | 1532 | 1516 | |
160 | 3840 | 3312 | 2976 | 2736 | 2544 | 2424 | 2352 | 2304 | 2280 | |
6 | 40 | 1219 | 1052 | 945 | 869 | 808 | 770 | 747 | 732 | 724 |
80 | 1913 | 1650 | 1483 | 1363 | 1267 | 1208 | 1172 | 1148 | 1136 | |
160 | 3289 | 2836 | 2549 | 2343 | 2179 | 2076 | 2014 | 1973 | 1953 | |
10″ | 40 | 974 | 840 | 755 | 694 | 645 | 615 | 596 | 584 | 578 |
80 | 1609 | 1388 | 1247 | 1147 | 1066 | 1016 | 986 | 966 | 56 | |
160 | 3147 | 2714 | 2439 | 2242 | 2085 | 1986 | 1927 | 1880 | 1868 | |
5″ | 40 | 1342 | 1158 | 1040 | 956 | 889 | 847 | 822 | 805 | 797 |
80 | 1981 | 1709 | 1535 | 1411 | 1312 | 1250 | 1213 | 1189 | 1176 | |
160 | 3414 | 2945 | 2646 | 2433 | 2262 | 2155 | 2091 | 2049 | 2027 | |
8″ | 40 | 1073 | 926 | 832 | 765 | 711 | 678 | 657 | 644 | 637 |
80 | 1692 | 1459 | 1311 | 1205 | 1121 | 1068 | 1036 | 1015 | 1005 | |
160 | 3175 | 2738 | 2460 | 2262 | 2103 | 2004 | 1944 | 1905 | 1885 |
SS 409 Pipe OD | AISI 409 Seamless Pipe Tolerance |
---|---|
4 to 35mm | +/- 0.08mm |
35 to 38mm | +/- 0.15mm |
38 to 60mm | +/- 0.20mm |
60 and above | +/- 0.25mm |
Surface features | Surface roughness (Ra) value | Examples of processing methods |
---|---|---|
Dark glossy surface | Ra0.2, Ra0.1, Ra0.05 | Grinding, honing, super-fine grinding, polishing |
Clearly visible knife marks | Ra100, Ra50, Ra25 | Rough turning, rough planing, rough milling, drilling |
No visible processing marks | Ra1.6, Ra0.8, Ra0.4 | Fine turning, fine grinding, fine hinge, grinding |
Slightly seen knife marks | Ra12.5, Ra6.3, Ra3.2 | Fine turning, fine planing, fine milling, rough hinge, rough grinding |
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ASTM A312 Stainless Steel 409 Pipes | Stainless Steel Werkstoff NR. 1.4151 Pipes |
SS 409 Pipes | Martensitic Stainless Steel 409 Heat exchanger Tubes |
Stainless Steel UNS S40900 Pipes | ASME SA 312 Tp 409 Condenser Tubes |
TP 409 SS Werkstoff Nr. 1.4151 Pipes | SME SA 312 AISI 409 Stainless Steel Pipe and Tubes |
SS 409 Round Pipes | DIN 1.4151 Stainless Steel 409 Pipes |
409 Stainless Steel Electropolished Pipes | ASTM A276 SS 409 Pipes |
Stainless Steel 409 Seamless Pipes | SS TP 409 Seamless Pipes |
ASME SA 358 SS 409 Welded Pipes | Stainless Steel 409 Pipes |
SS 409 Hexagonal Pipes | SS 409 Hydraulic Pipes |
TP 409 Stainless Steel ERW / EFW Pipes | SS 409 Tube |
TP SS 409 Hollow Pipes | 409 Stainless Tube |
Stainless Steel 409 Pipe | 409 Stainless Steel Exhaust Tubing |
ASTM A312 Tp 409 Welded Pipe | Buy 409 Ss Pipe |
SS 409 ERW Tube | SS 409 Hollow Pipes |
ASME B36.19 UNS S40900 Schedule 40 Pipe | 409 Steel Seamless Tubes |
ASME SA 312 SUS 409 Round Pipe | 409 Stainless Steel Tubing |
SS 1.4151 ERW Pipe | 409 Exhaust Pipe |
Stainless Steel 409 Pipe | 409 Stainless Steel Exhaust Pipe |
Aisi 409 Pipe | 409 SS Tube |
409 Stainless Steel Tube | SS 409 Pipe |
Austenitic Stainless Steel 409 Railing Pipe | A312 Stainless Steel 409 Tubes |
ASTM A358 tp 409 EFW pipe | A312 SS 409 Seamless Pipes |
Grade 409 Stainless Steel Tubes | TP 409 Stainless Steel Welded Tubing |
Super Ferritic Stainless Steel 409 Capillary Tubing | SS UNS S40900 Pipes |
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