One of the most common alloy grades, stainless steel 304 is an austenitic alloy. This means the alloy of stainless steel 304 seamless pipe possesses austenite as their principle crystalline structure. Austenite is also referred to as a gamma-phase iron, the presence of which makes the 304 Stainless Steel Pipe non-magnetic properties.
Grade 304, is also referred to as 18/8 or A2 or SUS304 or UNS S30400 by SS 304 Seamless Pipe Suppliers in Mumbai and stainless steel 304 pipe manufacturers in India. In comparison to most carbon steels, the thermal conductivity and electrical conductivity of this alloy are low. Yet the corrosion resistance properties of grade 304 stainless steel exhaust pipe tends to be significantly higher in comparison to carbon steels, particularly due to the addition of elements in its alloy. The constitution of grade 304 consists of both chromium and nickel. By adding nickel to austenitic stainless steel 304 pipe, the austenite in the microstructure of the alloy gets stabilized. Nickel also imparts the alloy with several interesting characteristics. For instance, the yield strength, resistance to oxidation, and impact strength or hardness properties of astm a312 tp 304 welded pipe see a significant increase, in comparison to carbon steels at both low temperatures as well as elevated temperatures. The resistance to oxidation is further improved by the high content of chromium in the alloy of ss 304 seamless pipe, due to the formation of a passivated oxide layer.
Specifications | ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790 |
Dimensions | ASTM, ASME and API |
304 Pipes & Tubes | 1/2" NB - 16" NB |
ERW 304 Pipes & Tubes | 1/2" NB - 24" NB |
EFW 304 Pipes & Tubes | 6" NB - 100" NB |
Size | 1/8″NB TO 30″NB IN |
Specialized in | Large Diameter Size |
Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
Form | Round, Square, Rectangular, Hydraulic Etc |
Length | Single Random, Double Random & Cut Length. |
End | Plain End, Beveled End, Treaded |
304 Stainless Steel Welded Pipes
SS 304 Square Pipes
ASTM A312 304 SS ERW Pipes
ASME SA312 TP304 Round Pipes
Stainless Steel 304 Hollow Pipes
304 SS Rectangular Pipes
Cold Drawn Grade SA312 TP304 Seamless Pipes
ASME SA312 TP304 Custom Pipe
SCH 40s ASTM A312 304 Stainless Steel Pipes
ASTM A312 TP 304 Exhaust Pipes
Schedule 40 ASTM A312 304 SS Pipes
SA 312 Gr 304 Stainless Steel Electropolished Pipe
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
304 | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 |
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
304 | 515 | 205 | 40 | 92 | 201 |
STANDARD | WERKSTOFF NR. | UNS | JIS | AFNOR | BS | GOST | EN |
SS 304 | 1.4301 | S30400 | SUS 304 | Z7CN18‐09 | 304S31 | 08Х18Н10 | X5CrNi18-10 |
Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
304 | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
NB Sizes |
Sch 5 |
Sch 10 |
Sch 40 |
Sch 80 |
Sch 160 |
---|---|---|---|---|---|
1/8" |
√ |
√ |
√ |
√ |
|
1/4" |
√ |
√ |
√ |
√ |
|
3/8" |
√ |
√ |
√ |
√ |
|
1/2" |
√ |
√ |
√ |
√ |
√ |
3/4" |
√ |
√ |
√ |
√ |
√ |
1" |
√ |
√ |
√ |
√ |
√ |
1 1/4" |
√ |
√ |
√ |
√ |
√ |
1 1/2" |
√ |
√ |
√ |
√ |
√ |
2" |
√ |
√ |
√ |
√ |
√ |
2 1/2" |
√ |
√ |
√ |
√ |
√ |
3" |
√ |
√ |
√ |
√ |
√ |
4" |
√ |
√ |
√ |
√ |
√ |
5" |
√ |
√ |
√ |
√ |
|
6" |
√ |
√ |
√ |
√ |
Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
BS | En | No | Name | ||||
304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
Surface Finish | Internal Surface(ID) | Exterbal Surface(OD) | |||
---|---|---|---|---|---|
Roughness Average(RA) | Roughness Average(RA) | ||||
μ inch | μm | μ inch | μm | ||
AP | Annealed & Pickled | Not defined | Not defined | 40 or Not defined | 1.0 or Not defined |
BA | Beight Annealed | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
MP | Mechanical Polish | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
EP | Electro Polish | 15,10,7,5 | 0.38,0.25,0.20;0.13 | 32 | 0.8 |
Pipe Size (inches) |
Pipe Schedule | Temperature (°F) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
100 | 200 | 300 | 400 | 500 | 600 | 650 | 700 | 750 | ||
1" | 40 | 3048 | 2629 | 2362 | 2171 | 2019 | 1924 | 1867 | 1824 | 1810 |
1" | 80 | 4213 | 3634 | 3265 | 3002 | 2791 | 2659 | 2580 | 2528 | 2501 |
1" | 160 | 6140 | 5296 | 4759 | 4375 | 4068 | 3876 | 3761 | 3684 | 3646 |
1.5" | 40 | 2257 | 1947 | 1750 | 1608 | 1496 | 1425 | 1383 | 1354 | 1340 |
1.5" | 80 | 3182 | 2744 | 2466 | 2267 | 2108 | 2009 | 1949 | 1909 | 1889 |
1.5" | 160 | 4619 | 3984 | 3580 | 3291 | 3060 | 2916 | 2829 | 2772 | 2743 |
2" | 40 | 1902 | 1640 | 1474 | 1355 | 1260 | 1201 | 1165 | 1141 | 1129 |
2" | 80 | 2747 | 2369 | 2129 | 1957 | 1820 | 1734 | 1682 | 1648 | 1631 |
2" | 160 | 4499 | 3880 | 3486 | 3205 | 2980 | 2840 | 2755 | 2699 | 2671 |
3" | 40 | 1806 | 1558 | 1400 | 1287 | 1196 | 1140 | 1106 | 1084 | 1072 |
3" | 80 | 2553 | 2202 | 1979 | 1819 | 1691 | 1612 | 1564 | 1532 | 1516 |
3" | 160 | 3840 | 3312 | 2976 | 2736 | 2544 | 2424 | 2352 | 2304 | 2280 |
4" | 40 | 1531 | 1321 | 1187 | 1091 | 1014 | 967 | 938 | 919 | 909 |
4" | 80 | 2213 | 1909 | 1715 | 1577 | 1466 | 1397 | 1355 | 1328 | 1314 |
4" | 160 | 3601 | 3106 | 2791 | 2566 | 2386 | 2273 | 2206 | 2161 | 2138 |
5" | 40 | 1342 | 1158 | 1040 | 956 | 889 | 847 | 822 | 805 | 797 |
5" | 80 | 1981 | 1709 | 1535 | 1411 | 1312 | 1250 | 1213 | 1189 | 1176 |
5" | 160 | 3414 | 2945 | 2646 | 2433 | 2262 | 2155 | 2091 | 2049 | 2027 |
6" | 40 | 1219 | 1052 | 945 | 869 | 808 | 770 | 747 | 732 | 724 |
6" | 80 | 1913 | 1650 | 1483 | 1363 | 1267 | 1208 | 1172 | 1148 | 1136 |
6" | 160 | 3289 | 2836 | 2549 | 2343 | 2179 | 2076 | 2014 | 1973 | 1953 |
8" | 40 | 1073 | 926 | 832 | 765 | 711 | 678 | 657 | 644 | 637 |
8" | 80 | 1692 | 1459 | 1311 | 1205 | 1121 | 1068 | 1036 | 1015 | 1005 |
8" | 160 | 3175 | 2738 | 2460 | 2262 | 2103 | 2004 | 1944 | 1905 | 1885 |
10" | 40 | 974 | 840 | 755 | 694 | 945 | 615 | 596 | 584 | 578 |
10" | 80 | 1609 | 1388 | 1247 | 1147 | 1066 | 1016 | 986 | 966 | 956 |
10" | 160 | 3147 | 2714 | 2439 | 2242 | 2085 | 1986 | 1927 | 1880 | 1868 |
Dammam -KSA, Philippines, Indonesia, Belgium | Stainless Steel 304 Pipe |
Qatar, Europe, France, Thailand | Astm A312 Tp304 Seamless Pipe |
Czechia, Thailand, Germany, Malaysia | Stainless Steel 304 erw pipe |
Malaysia, Bangladesh, USA, Finland | Jindal 304 Stainless Steel Pipes |
South Africa, Kuwait, Saudi Arabia (KSA), Brazil | Sa213 Tp304 Welded Pipes |
Bahrain, Singapore, South Africa, Singapore | 304 Stainless Steel 3 Inch Pipe |
Philippines, UK, Australia, Nigeria | Ss Rectangular Tube |
Oman, Hong Kong, Malaysia, UAE | 304 Stainless Steel Pipe |
Chile, Iran, Italy, Singapore | 1 Inch Ss 304 Pipe |
United Arab Emirates (UAE), Norway, Turkey, Malaysia | Stainless Steel 304 Tube |
Netherlands, Russia, Malaysia, Dubai | 304 Steel Pipe |
Egypt, Mexico, Spain, UK | Ss 304 Schedule 10 Pipe |
United Kingdom -UK, Malaysia, Europe, UAE | 304 Stainless Steel Square Pipe |
UK, Poland, Canada, Ellington -United States | 304 Stainless Steel Pipe 2 Inch Nps |
Philippines, Canada, Malaysia, Singapore | Ss Square Tube |
Europe, Romania, Japan, Malaysia | Schedule 10 304 Stainless Steel Pipe |
Sweden, Malaysia, Colombia, China | Astm A213 Tp304 Exhaust Pipes |
Malaysia, Los Alamos -Mexico, Taiwan, Philippines | Ss 304 Square Pipe |
Singapore, NY 12203 (USA), South Korea, Malaysia | Ss 304 Sch 40 Pipe |