Different between SS 321 Seamless/Welded/ERW Tube
Tubes in the SS 321 grade are commonly manufactured in seamless, welded, or erw configurations. All these configurations can be separated based on key features.
What is ASTM A312 TP 321 Round Pipe
ASTM A312 Tp 321 round pipe covers standard specifications of seamless or welded austenitic stainless steel pipes. The circular cross-section pipes are designed to perform well in high temperatures and different corrosive media.
Different between SS 321 vs ss321h Pipe
SS 321 and ss321h pipes are designed with nearly identical characteristics and features. The major difference between both these piping components is the presence of carbon content. A SS 321h has a carbon content of 0.04% up to 0.10%. Themaximum carbon content in the SS 321 pipe grade is 0.08%.
What is the difference between ASTM A312 TP 321 and ASME SA 312 TP 321
ASTM and ASME are important standards that are used in manufacturing piping modules in the 321 grade. Both these grades can be distinguished based on certain features.
Stainless Steel 321 Cold Rolled and Hot Rolled Plate
Stainless steel 321 plate is an austenitic grade that can be produced either by hot or cold rolling procedures. In a hot rolling process, the metal is processed at high temperatures followed by cold rolling. Here the plates are rolled at room temperature, giving them good tolerances and strengths.
How Do You Anneal 321 Stainless Steel Pipe
The SS321 pipes are heated at temperatures between 950 to 1120 degrees C, followed by rapid cooling. The pipes can be stabilized with heat of 870-900 degrees C for 1 hour. The metal is stress-relieved for 1-2 hours at 700 degrees C followed by air cooling.
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 321 Pipes | 1/2″ NB to 16″ NB |
Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
ERW 321 Pipes | 1/2″ NB to 24″ NB |
Form | “U” Shape, Custom Pipes, Round Pipes, Hydraulic Pipes |
EFW 321 Pipes | 6″ NB to 100″ NB |
End | Beveled End, Plain End, Treaded |
Length | Double Random, Single Random, & Cut Length. |
Grade | S | C | Cr | Mn | Mo | Si | N | P | Ni | Other | |
---|---|---|---|---|---|---|---|---|---|---|---|
321 | min. max |
0.030 | - 0.08 |
17.0 19.0 |
2.00 | - | 0.75 | 0.10 | 0.045 | 9.0 12.0 |
Ti=5(C+N) 0.70 |
Grade | Elongation (% in 50mm) min | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Hardness | |
---|---|---|---|---|---|
Brinell (HB) max | Rockwell B (HR B) max | ||||
321 | 40 | 515 | 205 | 217 | 95 |
Grade | Swedish SS | UNS No | Old British | Euronorm | Japanese JIS | ||
---|---|---|---|---|---|---|---|
En | BS | Name | No | ||||
321 | 2337 | S32100 | 58B, 58C | 321S31 | X6CrNiTi18-10 | 1.4541 | SUS 321 |
Grade | Electrical Resistivity (n.m) | Density (kg/m3) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Elastic Modulus (GPa) | Specific Heat 0-1000C (J/kg.K) | |||
---|---|---|---|---|---|---|---|---|---|
0-3150C | 0-1000C | 0-5380C | at 5000C | at 1000C | |||||
321 | 720 | 8027 | 17.2 | 16.6 | 18.6 | 22.2 | 16.1 | 193 | 500 |
Pipes O.D. (in.) |
Wall Thickness of Pipes/Tubes (inches) | |||||||
---|---|---|---|---|---|---|---|---|
.028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
Working Pressure (psig) | ||||||||
3/8 | 3100 | 4400 | 6100 | |||||
1/8 | 7900 | 10100 | ||||||
3/4 | 2200 | 3000 | 4000 | 4600 | ||||
1/4 | 3700 | 4800 | 7000 | 9500 | ||||
1 | 2200 | 2900 | 3400 | 3900 | 4300 | |||
5/16 | 3700 | 5400 | 7300 | |||||
1/2 | 2300 | 3200 | 4400 |
Pipes OD | Wall Thickness (Inches) | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
.010 | .012 | .016 | .020 | .028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
3/8 | 3,530 | 5,107 | 7,029 | |||||||||
1/16 | 6,422 | 7,872 | 10,768 | 13,484 | ||||||||
1/2 | 2,595 | 3,721 | 5,078 | 6,699 | ||||||||
1/8 | 6,422 | 9,325 | 11,823 | |||||||||
5/8 | 2,051 | 2,927 | 3,970 | 5,200 | 6,056 | |||||||
3/16 | 4,081 | 5,935 | 7,630 | 11,005 | ||||||||
7/8 | 1,446 | 2,051 | 2,764 | 3,592 | 4,161 | 4,842 | 5,391 | |||||
1/4 | 4,305 | 5,518 | 8,053 | 10,946 | ||||||||
1 | 5,040 | 7,140 | 9,595 | 12,445 | 14,390 | 16,715 | 18,585 | |||||
3/4 | 1,696 | 2,412 | 3,259 | 4,249 | 4,933 | 5,755 | 6,422 |
Pipes OD | Wall Thickness (Inches) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.5 | 0.6 | 0.7 | 0.8 | 1.0 | 1.2 | 1.5 | 1.6 | 1.8 | 2.0 | 2.2 | 2.5 | 3.0 | |
12 | 169 | 215 | 262 | 335 | 360 | 411 | 464 | ||||||
3 | 464 | 567 | 672 | 775 | 965 | ||||||||
14 | 182 | 222 | 282 | 303 | 345 | 389 | 433 | 500 | 612 | ||||
4 | 335 | 411 | 491 | 567 | 723 | 873 | |||||||
16 | 158 | 192 | 244 | 262 | 298 | 335 | 372 | 430 | 528 | ||||
6 | 310 | 360 | 464 | 567 | 723 | 775 | |||||||
18 | 140 | 169 | 215 | 230 | 262 | 294 | 326 | 377 | 464 | ||||
8 | 227 | 262 | 335 | 411 | 528 | 567 | |||||||
22 | 113 | 137 | 173 | 186 | 211 | 236 | 262 | 301 | 369 | ||||
10 | 206 | 262 | 320 | 411 | 442 | ||||||||
25 | 99 | 120 | 152 | 162 | 184 | 206 | 228 | 262 | 320 |
Pipes Size (inches) |
Pipes Schedule | Temperature (°F) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
100 | 200 | 300 | 400 | 500 | 600 | 650 | 700 | 750 | ||
4" | 80 | 2213 | 1909 | 1715 | 1577 | 1466 | 1397 | 1355 | 1328 | 1314 |
1" | 40 | 3048 | 2629 | 2362 | 2171 | 2019 | 1924 | 1867 | 1824 | 1810 |
5" | 40 | 1342 | 1158 | 1040 | 956 | 889 | 847 | 822 | 805 | 797 |
1" | 80 | 4213 | 3634 | 3265 | 3002 | 2791 | 2659 | 2580 | 2528 | 2501 |
8" | 40 | 1073 | 926 | 832 | 765 | 711 | 678 | 657 | 644 | 637 |
1" | 160 | 6140 | 5296 | 4759 | 4375 | 4068 | 3876 | 3761 | 3684 | 3646 |
4" | 40 | 1531 | 1321 | 1187 | 1091 | 1014 | 967 | 938 | 919 | 909 |
1.5" | 40 | 2257 | 1947 | 1750 | 1608 | 1496 | 1425 | 1383 | 1354 | 1340 |
5" | 80 | 1981 | 1709 | 1535 | 1411 | 1312 | 1250 | 1213 | 1189 | 1176 |
1.5" | 80 | 3182 | 2744 | 2466 | 2267 | 2108 | 2009 | 1949 | 1909 | 1889 |
4" | 160 | 3601 | 3106 | 2791 | 2566 | 2386 | 2273 | 2206 | 2161 | 2138 |
1.5" | 160 | 4619 | 3984 | 3580 | 3291 | 3060 | 2916 | 2829 | 2772 | 2743 |
6" | 80 | 1913 | 1650 | 1483 | 1363 | 1267 | 1208 | 1172 | 1148 | 1136 |
2" | 40 | 1902 | 1640 | 1474 | 1355 | 1260 | 1201 | 1165 | 1141 | 1129 |
8" | 160 | 3175 | 2738 | 2460 | 2262 | 2103 | 2004 | 1944 | 1905 | 1885 |
2" | 80 | 2747 | 2369 | 2129 | 1957 | 1820 | 1734 | 1682 | 1648 | 1631 |
8" | 80 | 1692 | 1459 | 1311 | 1205 | 1121 | 1068 | 1036 | 1015 | 1005 |
2" | 160 | 4499 | 3880 | 3486 | 3205 | 2980 | 2840 | 2755 | 2699 | 2671 |
10" | 40 | 974 | 840 | 755 | 694 | 945 | 615 | 596 | 584 | 578 |
3" | 40 | 1806 | 1558 | 1400 | 1287 | 1196 | 1140 | 1106 | 1084 | 1072 |
10" | 80 | 1609 | 1388 | 1247 | 1147 | 1066 | 1016 | 986 | 966 | 956 |
3" | 80 | 2553 | 2202 | 1979 | 1819 | 1691 | 1612 | 1564 | 1532 | 1516 |
3" | 160 | 3840 | 3312 | 2976 | 2736 | 2544 | 2424 | 2352 | 2304 | 2280 |
5" | 160 | 3414 | 2945 | 2646 | 2433 | 2262 | 2155 | 2091 | 2049 | 2027 |
6" | 160 | 3289 | 2836 | 2549 | 2343 | 2179 | 2076 | 2014 | 1973 | 1953 |
6" | 40 | 1219 | 1052 | 945 | 869 | 808 | 770 | 747 | 732 | 724 |
10" | 160 | 3147 | 2714 | 2439 | 2242 | 2085 | 1986 | 1927 | 1880 | 1868 |
Nominal size [inches] | Wall thickness [inches] | Wall thickness [mm] | Outside diameter [inches] | Outside diameter [mm] | Weight [lb/ft] | Weight [kg/m] |
---|---|---|---|---|---|---|
1/8 | 0.095 | 2.41 | 0.405 | 10.3 | 0.31 | 0.47 |
1/4 | 0.119 | 3.02 | 0.54 | 13.7 | 0.54 | 0.8 |
1/2 | 0.147 | 3.73 | 0.84 | 21.3 | 1.09 | 1.62 |
3/4 | 0.154 | 3.91 | 1.05 | 26.7 | 1.47 | 2.2 |
1 | 0.179 | 4.55 | 1.315 | 33.4 | 2.17 | 3.24 |
1 1/4 | 0.191 | 4.85 | 1.66 | 42.2 | 3 | 4.47 |
1 1/2 | 0.2 | 5.08 | 1.9 | 48.3 | 3.63 | 5.41 |
2 | 0.218 | 5.54 | 2.375 | 60.3 | 5.02 | 7.48 |
2 1/2 | 0.276 | 7.01 | 2.875 | 73 | 7.66 | 11.41 |
3 | 0.3 | 7.62 | 3.5 | 88.9 | 10.25 | 15.27 |
3 1/2 | 0.318 | 8.08 | 4 | 101.6 | 12.5 | 18.63 |
4 | 0.337 | 8.56 | 4.5 | 114.3 | 14.98 | 22.32 |
5 | 0.375 | 9.53 | 5.563 | 141.3 | 20.78 | 30.97 |
6 | 0.432 | 10.97 | 6.625 | 168.3 | 28.57 | 42.56 |
8 | 0.5 | 12.7 | 8.625 | 219.1 | 43.39 | 64.64 |
10 | 0.594 | 15.09 | 10.75 | 273 | 64.43 | 96.01 |
12 | 0.688 | 17.48 | 12.75 | 323.8 | 88.63 | 132.08 |
14 | 0.75 | 19.05 | 14 | 355.6 | 106.13 | 158.1 |
16 | 0.844 | 21.44 | 16 | 406.4 | 136.61 | 203.53 |
18 | 0.938 | 23.83 | 18 | 457 | 170.92 | 254.55 |
20 | 1.031 | 26.19 | 20 | 508 | 208.87 | 311.17 |
24 | 1.125 | 30.96 | 24 | 610 | 296.58 | 442.08 |
OD mm |
Sch | WT mm |
Kg/m | in. |
---|---|---|---|---|
13.72 | 10S | 1.65 | 0.50 | 1/4 |
13.72 | 40S | 2.24 | 0.64 | 1/4 |
13.72 | 80S | 3.02 | 0.81 | 1/4 |
17.15 | 10S | 1.65 | 0.64 | 3/8 |
17.15 | 40S | 2.31 | 0.86 | 3/8 |
17.15 | 80S | 3.20 | 1.12 | 3/8 |
21.34 | 10S | 2.11 | 1.02 | 1/2 |
21.34 | 40S | 2.77 | 1.29 | 1/2 |
21.34 | 80S | 3.73 | 1.65 | 1/2 |
26.67 | 10S | 2.11 | 1.30 | 3/4 |
26.67 | 40S | 2.87 | 1.71 | 3/4 |
26.67 | 80S | 3.91 | 2.23 | 3/4 |
33.40 | 10S | 2.77 | 2.13 | 1 |
33.40 | 40S | 3.38 | 2.54 | 1 |
33.40 | 80S | 4.55 | 3.29 | 1 |
33.40 | 160 | 6.352) | 4.30 | 1 |
42.16 | 10S | 2.77 | 2.73 | 1¼ |
42.16 | 40S | 3.56 | 3.44 | 1¼ |
42.16 | 80S | 4.85 | 4.53 | 1¼ |
42.16 | 160 | 6.352) | 5.69 | 1¼ |
48.26 | 10S | 2.77 | 3.16 | 1½ |
48.26 | 40S | 3.68 | 4.11 | 1½ |
48.26 | 80S | 5.08 | 5.49 | 1½ |
60.33 | 10S | 2.77 | 3.99 | 2 |
60.33 | 40S | 3.91 | 5.52 | 2 |
60.33 | 80S | 5.54 | 7.60 | 2 |
60.33 | 160 | 8.742) | 11.29 | 2 |
73.03 | 10S | 3.05 | 5.35 | 2½ |
73.03 | 40S | 5.16 | 8.77 | 2½ |
73.03 | 80S | 7.01 | 11.59 | 2½ |
88.90 | 10S | 3.05 | 6.56 | 3 |
88.90 | 40S | 5.49 | 11.47 | 3 |
88.90 | 80S | 7.62 | 15.51 | 3 |
88.90 | 160 | 11.132) | 21.67 | 3 |
101.60 | 10S | 3.05 | 7.53 | 3½ |
101.60 | 40S | 5.74 | 13.78 | 3½ |
101.60 | 80S | 8.08 | 18.92 | 3½ |
114.30 | 10S | 3.05 | 8.50 | 4 |
114.30 | 40S | 6.02 | 16.32 | 4 |
114.30 | 80S | 8.56 | 22.67 | 4 |
114.30 | 160 | 13.492) | 34.05 | 4 |
141.30 | 40S | 6.55 | 22.10 | 5 |
141.30 | 80S | 9.53 | 31.44 | 5 |
141.30 | 160 | 15.882) | 49.87 | 5 |
168.28 | 10S | 3.4 | 14.04 | 6 |
168.28 | 40S | 7.11 | 28.69 | 6 |
168.28 | 80S | 10.97 | 43.21 | 6 |
168.28 | 120 | 14.27 | 54.75 | 6 |
168.28 | 160 | 18.262) | 68.59 | 6 |
219.08 | 40S | 8.18 | 43.20 | 8 |
219.08 | 80S | 12.7 | 65.63 | 8 |
219.08 | 120 | 18.23 | 91.30 | 8 |
219.08 | 160 | 23.012) | 112.97 | 8 |
Wall Thickness | 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" |
1/8" IPS(.405"O. D.) | 3 1/2" IPS( 4.000"O. D.) |
---|---|
SCH 40, 80 | SCH 10, 40, 80, 160, XXH |
1/4" IPS(.540"O. D.) | 4" IPS(4.500"O. D.) |
SCH 10, 40, 80 | SCH 10, 40, 80, 160, XXH |
3/8" IPS(.675"O. D.) | 5" IPS( 5.563"O. D.) |
SCH 10, 40, 80 | SCH 10, 40, 80, 160, XXH |
1/2" IPS(.840"O. D.) | 6" IPS(6.625"O. D.) |
SCH 5, 10, 40, 80, 160, XXH | SCH 5, 10, 40, 80, 120, 160, XXH |
3/4" IPS(1.050"O. D.) | 8 ” IPS(8.625"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH 5, 10, 40, 80, 120, 160, XXH |
1" IPS:(1.315′O. D.) | 10" IPS(10.750"O. D.) |
SCH 5, 10, 40, 80, 160, XXH | SCH 10, 20, 40, 80 (.500), TRUE 80(.500) |
1-1/4" IPS(1.660"O. D.) | 12" IPS(12.750"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500) |
1-1/2" IPS(1.900"O. D.) | 14" IPS(14.000"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH10 (.188), SCH40 (.375) |
2" IPS(2.375"O. D.) | 16" IPS(16.000"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH10(.188), SCH40(.375) |
2 1/2" IPS(2.875"O. D.) | 18" IPS (18.000"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH-40 (.375) |
3" IPS( 3.500"O. D.) | |
SCH 5, 10, 40, 80, 160, XXH |
42.4mm diameter round tube stainless steel pipe 321
Stainless steel round tube 321
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ASME SA 312 321 Stainless Steel Pipes | AISI 321 Stainless Steel Pipe |
ASTM A312 TP321 Welded Pipe | SS A312 TP321 Custom Pipe |
ASTM A312 TP321 Stainless Steel Pipe | TP321 Stainless Steel EFW Tubing |
Schedule 40 321 Stainless Steel Pipe | High pressure UNS S32100 Pipe |
SS UNS S32100 Seamless Tubes | 321 SS Pipes |
ASME SA312 TP 321 EFW Pipe | UNS S32100 Seamless Steel Pipe |
Cres 321 Tubing | Stainless Steel 321 Seamless Pipes |
Stainless Steel 321 Cold Drawn Tube | Schedule 5S Stainless Steel 1.4541 Pipes |
Stainless Steel 321 Tube | werkstoff nr. 1.4541 321 SS Pipe |
4 inch ASTM A312 TP321 Seamless Pipe | Stainless Steel 1.4541 Cold Drawn Seamless Pipes |
SS 321 Pipe | ASME SA312 SS 321 ERW Pipes |
ASTM A312 TP321 Welded Pipes | ASME SA312 TP 321 Cold Drawn Pipes |
ASTM A312 SS TP321 Pipes | SS 321 Seamless Tubes |
Stainless Steel 321 Pipe | Stainless Steel 321 Seamless Steel Precision Pipe |
321 Exhaust Tubing | 321 Stainless Steel Seamless Tubing |
321 Stainless Steel Cold Drawn Welded Tube | SS A312 TP321 ERW Pipe |
Stainless Steel 321 Pipes | SS TP321 Welded Pipes |
SS 1.4541 Electropolished Pipe | ASTM A312 TP321 Pipes |
SA 312 TP321 Seamless Tube | Stainless Steel SUS 321 EFW Pipe |
AISI 321 Schedule 40 Pipe | 321 Stainless Steel Tubing |
ASTM A312 Stainless Steel 321 Capillary Tubing | AISI 321 ERW Pipe |
Grade 321 UNS S32100 Stainless Steel Pipe | SS 321 Tube |
SS A312 TP321 Precision Pipe | 321 SS Cold Drawn Seamless Pipes |
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