ASTM A312 TP304 naadlose vlekvrye staalpypleiding is an austenitic alloy grade designed with a superior composition of nickel and chromium. The ASTM A312 TP304 alloy has excellent resistance against corrosive and oxidative media across stress-induced environments. The versatile grade of alloys has outstanding mechanical properties. They have a minimum tensile strength of 75ksi with a minimum yield strength of 30Ksi. The ASTM A312 Grade TP304 Seamless Pipe can be processed via the hot or cold rolling process. These pipes can be availed in thickness between 0.8mm up to 12mm and can be availed in different sizes and dimensions to meet project requirements.

The components in this grade are produced in seamless, welded, and ERW configurations. Each of these modules has its own set of features allowing them to be used in different applications. The ASME SA 312 TP 304 Seamless Pipe is produced via an extrusion process wherein hot steel billets are passed through the metal. ASTM A312 TP304 naadlose vlekvrye staalpypleiding allows the material the capability to work in high temperatures and pressures. More over these pipes are slightly expensive as compared to welded pipes.
Equivalent of ASTM A312 TP304 Seamless Pipe
Equivalent GRADE
| GRADE | Nie-spesifiek | Engels | JIS | AFNOR | BS | WERKSTOF NR. | GOST | SS |
| UNDER | USA | EUROPE | JAPAN | RUSSIAN | Brits | Duits | RUSSIAN | SWEDISH |
| ASTM A312 TP 304 | S30400 | X5CrNi18-10 | SUS 304 | Z7CN18‐09 | 304S31 | 1.4301 | 08Х18Н10 | 2332 |
ASTM A312 TP304 stainless steel chemical composition
Chemiese samestelling
| Graad | C | Mn | P | S | Si | Ni | Kru | Yster |
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.0 | 8-11 | 18-20 | Bal. |
ASTM A312 TP304 stainless steel mechanical properties
Mechanical properties chart
| Tensile strength(Mpa) MaxYield point(Mpa) Max | Elongation(%) | Hardness (HRB) Max | ||||
| TP304 | 515 | 205 | 35 | 92 | ||
SS 304 Seamless Pipes Physical Properties
Physical Properties Chart
| rade | Digtheid (kg/m³) | Spesifieke hitte 0–1000 °C (J/kg·K) | Elastiese modulus (GPa) | Gemiddelde koëffisiënt van termiese uitdywing (m/m/°C) | Termiese geleidbaarheid (W/m·K) | Elektriese weerstand (n.m) | |||
| 0-100°C | 0-315°C | 0-538°C | by 100°C | by 500°C | |||||
| 304 | 8000 | 500 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 720 |
ASTM A312 TP304 Seamless Pipe Schedule Chart
Schedule Change to inch/mm Chart
| Nominal Pipe Size (NPS) | STD SK 40S | SCH 0S | SCH 120 | XS SCH 80S | XXS | Buitediameter (mm) | SCH 160 |
| 1/8 duim | 1.073 0.037 | 2.041 0.048 | 10.029 | ||||
| 1/4 duim | 2.024 0.064 | 1.065 0.048 | 3.002 0.081 | 13.072 | |||
| 3/8 duim | 2.031 0.086 | 1.065 0.064 | 3.020 1.012 | 17.015 | |||
| ½ duim | 2.077 1.029 | 2.011 1.001 | 3.073 1.064 | 7.047 2.065 | 21.034 | 4.076 1.098 | |
| drie-kwart duim | 2.087 1.071 | 2.011 1.030 | 3.091 2.023 | 7.082 3.069 | 26.067 | 5.056 2.094 | |
| 1 duim | 3.038 2.054 | 2.077 2.012 | 4.055 3.028 | 9.009 5.075 | 33.040 | 6.035 4.030 | |
| 1 1/4 duim | 3.056 3.043 | 2.077 2.073 | 4.085 3.053 | 9.070 7.088 | 42.016 | 6.035 5.069 | |
| 1 1/2 duim | 3.068 3.011 | 2.077 3.015 | 5.008 5.049 | 10.016 9.069 | 48.026 | 7.014 7.034 | |
| 2 duim | 3.091 5.052 | 2.077 3.098 | 5.054 7.059 | 11.007 13.065 | 60.033 | 8.074 11.028 | |
| 2 1/2 duim | 5.016 8.076 | 3.005 5.034 | 7.001 11.058 | 73.003 | 9.053 15.014 | ||
| 3 duim | 5.049 11.045 | 3.005 6.054 | 7.062 15.050 | 15.024 28.009 | 88.090 | 11.013 21.065 | |
| 3 en 'n half duim | 5.074 13.077 | 3.005 7.052 | 8.008 18.090 | 101.060 | |||
| 4 duim | 6.002 16.031 | 3.005 8.048 | 11.013 28.032 | 8.056 22.065 | 17.012 41.063 | 114.030 | 13.049 34.002 |
| 5 duim | 6.055 22.010 | 3.040 11.074 | 9.052 31.041 | 141.060 | 15.088 49.083 | ||
| 6 duim | 7.011 28.068 | 3.040 14.004 | 14.027 54.020 | 10.097 43.019 | 21.095 80.036 | 168.026 | 18.026 68.056 |
| 8 duim | 8.018 43.016 | 3.076 20.025 | 23.001 112.090 | 12.070 65.059 | 219.008 | 18.026 90.044 | |
| 10 duim | 9.027 61.020 | 4.019 28.020 | 12.070 81.055 | 273.005 | 28.058 174.082 | ||
| 12 duim | 9.053 74.092 | 4.057 36.053 | 323.085 | 12.070 97.046 |
ASME SA 312 TP 304 Pipes Weight Chart
| PIPE SIZE | OD IN INCHES | A.S.A. Pypeskedules | |||||||||||
| 5 sekondes | 5 | tieners | 10 | 40s & Std. | 40 | 60 | 80s & E.H. | 80 | 120 | 160 | DBL E.H. | ||
| 1/8 | .405 | .035.1383 | .049.1863 | .049.1863 | .068.2447 | 068.2447 | 0.95.3145 | 0.95.3145 | |||||
| 1/4 | .540 | .049.2570 | .065.3297 | .065.3297 | .088.4248 | 088.4248 | .119.5351 | .119.5351 | |||||
| 3/8 | .675 | .049.3276 | .065.4235 | .065.4235 | .091.5676 | .091.5676 | .126.7338 | .126.7338 | |||||
| 1/2 | .840 | .065.5383 | .065.5383 | .083.6710 | .083.6710 | .109.8510 | .109.8510 | .1471.088 | .1471.088 | .1871.304 | .2941.714 | ||
| 3/4 | 1.050 | .065.6838 | .065.6838 | .083.8572 | .083.8572 | .1131.131 | .1131.131 | .1541.474 | .1541.474 | .2181.937 | .3082.441 | ||
| 1 | 1.315 | .065.8678 | .065.8678 | .1091.404 | .1091.404 | .1331.679 | .1331.679 | .1792.172 | .1792.172 | .2502.844 | .3583.659 | ||
| 1-1/4 | 1.660 | .0651.107 | .0651.107 | .1091.806 | .1091.806 | .1402.273 | .1402.273 | .1912.997 | .1912.997 | .2503.765 | .3825.214 | ||
| 1-1/2 | 1.900 | .0651.274 | .0651.274 | .1092.085 | .1092.085 | .1452.718 | .1452.718 | .2003.631 | .2003.631 | .2814.859 | .4006.408 | ||
| 2 | 2.375 | .0651.604 | .0651.604 | .1092.638 | .1092.638 | .1543.653 | .1543.653 | .2185.022 | .2185.022 | .3437.444 | .4369.029 | ||
| 2-1/2 | 2.875 | .0832.475 | .0832.475 | .1203.531 | .1203.531 | .2035.793 | .2035.793 | .2767.661 | .2767.661 | .37510.01 | .55213.70 | ||
| 3 | 3.500 | .0833.029 | .0833.029 | .1204.332 | .1204.332 | .2167.576 | .2167.576 | .30010.25 | .30010.25 | .43714.32 | .60018.58 | ||
| 3-1/2 | 4.000 | .0833.472 | .0833.472 | .1204.973 | .1204.973 | .2269.109 | .2269.109 | .31812.51 | .31812.51 | .63622.85 | |||
| 4 | 4.500 | .0833.915 | .0833.915 | .1205.613 | .1205.613 | .23710.79 | .23710.79 | .28112.66 | .33714.98 | .33714.98 | .43719.01 | .53122.51 | .67427.54 |
| 4-1/2 | 5.000 | .24712.53 | .35517.61 | .71032.53 | |||||||||
| 5 | 5.563 | .1096.349 | .1096.349 | .1347.770 | .1347.770 | .25814.62 | .25814.62 | .37520.78 | .37520.78 | .50027.04 | .62532.96 | .75038.55 | |
| 6 | 6.625 | .1097.585 | .1097.585 | .1349.290 | .1349.290 | .28018.97 | .28018.97 | .43228.57 | .43228.57 | .56236.39 | .71845.30 | .86453.16 | |
| 7 | 7.625 | .30123.57 | .50038.05 | .87563.08 | |||||||||
| Medium Type = Wall thickness in inches Bold Type = Steel weight per foot in pounds | |||||||||||||
Mostly TP304 stainless steel pipe pressure rating
Roestvrye staalpypleidings – Drukklassifikasies
Drukgraderinge vir standaard naadlose A312-TP304 vlekvrye staalbuise – temperature 100°F tot 750°F
Beoordelings vir standaard naadlose vlekvrye staalpyps, temperature van 100°F tot 750°F. Alle graderings in psig gebaseer op ANSI/ASME B 31.1.
Drukgradering (psig)
| Pypgrootte (duime) | Pyp-skedule | Temperatuur (°F) | ||||||||
| 100 | 200 | 300 | 400 | 500 | 600 | 650 | 700 | 750 | ||
| 1 duim | 40 | 3048 | 2629 | 2362 | 2171 | 2019 | 1924 | 1867 | 1824 | 1810 |
| 1 duim | 80 | 4213 | 3634 | 3265 | 3002 | 2791 | 2659 | 2580 | 2528 | 2501 |
| 1 duim | 160 | 6140 | 5296 | 4759 | 4375 | 4068 | 3876 | 3761 | 3684 | 3646 |
| 1,5 duim | 40 | 2257 | 1947 | 1750 | 1608 | 1496 | 1425 | 1383 | 1354 | 1340 |
| 1,5 duim | 80 | 3182 | 2744 | 2466 | 2267 | 2108 | 2009 | 1949 | 1909 | 1889 |
| 1,5 duim | 160 | 4619 | 3984 | 3580 | 3291 | 3060 | 2916 | 2829 | 2772 | 2743 |
| 2 duim | 40 | 1902 | 1640 | 1474 | 1355 | 1260 | 1201 | 1165 | 1141 | 1129 |
| 2 duim | 80 | 2747 | 2369 | 2129 | 1957 | 1820 | 1734 | 1682 | 1648 | 1631 |
| 2 duim | 160 | 4499 | 3880 | 3486 | 3205 | 2980 | 2840 | 2755 | 2699 | 2671 |
| 3 duim | 40 | 1806 | 1558 | 1400 | 1287 | 1196 | 1140 | 1106 | 1084 | 1072 |
| 3 duim | 80 | 2553 | 2202 | 1979 | 1819 | 1691 | 1612 | 1564 | 1532 | 1516 |
| 3 duim | 160 | 3840 | 3312 | 2976 | 2736 | 2544 | 2424 | 2352 | 2304 | 2280 |
| 4 duim | 40 | 1531 | 1321 | 1187 | 1091 | 1014 | 967 | 938 | 919 | 909 |
| 4 duim | 80 | 2213 | 1909 | 1715 | 1577 | 1466 | 1397 | 1355 | 1328 | 1314 |
| 4 duim | 160 | 3601 | 3106 | 2791 | 2566 | 2386 | 2273 | 2206 | 2161 | 2138 |
| 5 duim | 40 | 1342 | 1158 | 1040 | 956 | 889 | 847 | 822 | 805 | 797 |
| 5 duim | 80 | 1981 | 1709 | 1535 | 1411 | 1312 | 1250 | 1213 | 1189 | 1176 |
| 5 duim | 160 | 3414 | 2945 | 2646 | 2433 | 2262 | 2155 | 2091 | 2049 | 2027 |
| 6 duim | 40 | 1219 | 1052 | 945 | 869 | 808 | 770 | 747 | 732 | 724 |
| 6 duim | 80 | 1913 | 1650 | 1483 | 1363 | 1267 | 1208 | 1172 | 1148 | 1136 |
| 6 duim | 160 | 3289 | 2836 | 2549 | 2343 | 2179 | 2076 | 2014 | 1973 | 1953 |
| 8 duim | 40 | 1073 | 926 | 832 | 765 | 711 | 678 | 657 | 644 | 637 |
| 8 duim | 80 | 1692 | 1459 | 1311 | 1205 | 1121 | 1068 | 1036 | 1015 | 1005 |
| 8 duim | 160 | 3175 | 2738 | 2460 | 2262 | 2103 | 2004 | 1944 | 1905 | 1885 |
| 10 duim | 40 | 974 | 840 | 755 | 694 | 945 | 615 | 596 | 584 | 578 |
| 10 duim | 80 | 1609 | 1388 | 1247 | 1147 | 1066 | 1016 | 986 | 966 | 956 |
| 10 duim | 160 | 3147 | 2714 | 2439 | 2242 | 2085 | 1986 | 1927 | 1880 | 1868 |
304 vlekvrye staal pyp buitediameter-toleransie
| NPS | ASTM A312 buite-deursnee-toleransie | |||
| + | – | |||
| duim | mm | duim | mm | |
| 1/8~1 1 /2 | 1/64(0.015) | 0.4 | 1/32(0.031) | 0.8 |
| 1 en 'n half tot 4 | 1/32(0.031) | 0.8 | 1/32(0.031) | 0.8 |
| vier tot agt | 1/16(0.062) | 1.6 | 1/32(0.031) | 0.8 |
| 8~18 | 3/32(0.093) | 2.4 | 1/32(0.031) | 0.8 |
| 18~26 | 1/8(0.125) | 3.2 | 1/32(0.031) | 0.8 |
| 26~34 | 5/32(0.156) | 4 | 1/32(0.031) | 0.8 |
| 34~48 | 3/16(0.187) | 4.8 | 1/32(0.031) | 0.8 |
Astm A312 Tp304 Pipe Processing
| ASTM A312 TP304 vlekvrye staal naadlose pyp vervaardiging verwerking | |
| Strukturele sny | Snyprodukte sluit in buis, buising, vierkantige buise, reghoekige buise en ronde buise. Die diktes wissel van 1/8″ NB tot 30″ NB in deursnee. |
| Buisafsny | Die gesnyde produkte sluit ornamentale buis, buising en holseksie in. Die dikte wissel van 1/8″ NB tot 30″ NB deursnee. |
| Produksiesny | Kan produksiesnywerk verskaf vir produkdeursetters tot 4″. Ons gebruik Amada-produksietoerusting om hierdie presisiesnywerk met nou toleransies te bewerkstellig. |
| Strukturele poleer | Gepoleerde produkte het alle buisvormige produkte ingesluit, met poleerwerk van buite- en binne-deursnee beskikbaar. |
Hittebehandeling
Roestvrye staalbuise van austenitiese roestvrye staal ASTM A312 TP304 of TP304L moet oplossinggeannexeer word. ASTM A312 TP304 vlekvrye staal naadlose pyp Tydens annealing moet die pype verhit word tot 'n temperatuur van nie minder as 1900°F [1040°C] en by daardie temperatuur gelaat word vir 'n tydperk lank genoeg sodat alle chroomkarbiede opgelos word. Aangesien die chroomkarbied stadig oplos, moet die hoogste praktiese temperatuur gekies word wat ooreenstem met beperkte korrelgroei. Hierdie temperatuur is in die omgewing van 1095° [2000°F]. Volledige oplossing van chroomkarbiede verminder die neerslag van intergraan-karbiede en verbeter dus die weerstand teen intergraan-korrosie. Die daaropvolgende afkoeling (blus) vanaf die annealerings temperatuur moet vinnig wees, sodat die opgeloste karbiede in oplossing bly.
SA 312 Gr 304 Seamless Pipe Applications
Farmaseutika
Chemikalieë
Voedselverwerking
Olie- en gasverwerking
Energiebedrywe
Pulp en papier
Tekstielmasjinerie
Kragstasies
Konstruksie
Motorbedryf
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