ASTM A312 Stainless Steel Seamless Pipe
ASTM A312 Stainless Steel Seamless Pipe is a highly beneficial product that has numerous advantages. Here are some of the advantages of using ASTM A312 Stainless Steel Seamless Pipe:
1. High corrosion resistance: Stainless steel pipes are corrosion resistant, ensuring that they can withstand harsh chemicals and corrosive environments. This makes them ideal for use in industries like chemical processing, oil and gas, and water treatment.
2. High strength: Stainless steel pipes have high strength and can withstand extreme temperatures and pressure. This makes them durable and reliable, and able to handle heavy-duty applications.
3. Aesthetic appeal: Stainless steel pipes have a clean, polished finish that gives them a sleek look. This makes them ideal for use in applications where appearance is important, such as architectural and interior design, as well as in the food and beverage industry.
4. Low maintenance: Stainless steel pipes require very little maintenance, making them cost-effective and easy to maintain. They are also easy to clean and sanitize, making them ideal for applications where hygiene is important.
5. Long lifespan: Stainless steel pipes have a long lifespan, meaning they can be used for many years without replacement. This makes them a great investment for businesses that require reliable and long-lasting equipment.
Overall, ASTM A312 Stainless Steel Seamless Pipe is a high-quality, durable, and cost-effective product with numerous benefits. It is ideal for a variety of applications in different industries, and can ensure the safe, efficient, and reliable operation of equipment and machinery.
Chemical Composition
| Grade | Carbon | Silicon | Manganese | Chromium | Nickel | Molybdenum | Sulfur | Phosphorous |
|---|---|---|---|---|---|---|---|---|
| TP304 | 0,08 | 1,0 | 2.00 | 18.0 – 20.0 | 8.0 – 11.0 | – | 0,03 | 0,045 |
| TP304L | 0,035 | 1,0 | 2.00 | 18.0 – 20.0 | 8.0 – 13.0 | – | 0,03 | 0,045 |
| TP316 | 0,08 | 1,0 | 2.00 | 16.0 – 18.0 | 10.0 – 14.0 | 2.00 – 3.00 | 0,03 | 0,045 |
| TP316L | 0,035 | 1,0 | 2.00 | 16.0 – 18.0 | 10.0 – 15.0 | 2.00 – 3.00 | 0,03 | 0,045 |
| TP321 | 0,08 | 1,0 | 2.00 | 17.0 – 19.0 | 9.0 – 12.0 | – | 0,03 | 0,045 |
Mechanical Properties
| Grade | UNS | Tensile Strength Min, Ksi [MPa] |
Yield Strength Min, Ksi [MPa] |
|---|---|---|---|
| TP304 | S30400 | 75 [515] | 30 [205] |
| TP304L | S30403 | 70 [485] | 25 [170] |
| TP304H | S30409 | 75 [515] | 30 [205] |
| TP304N | S30451 | 80 [550] | 35 [240] |
| TP304LN | S30453 | 75 [515] | 30 [205] |
| TP309S | S30908 | 75 [515] | 30 [205] |
| TP310S | S31008 | 75 [515] | 30 [205] |
| TP316 | S31600 | 75 [515] | 30 [205] |
| TP316L | S31603 | 70 [485] | 25 [170] |
| TP316H | S31609 | 75 [515] | 30 [205] |
| TP316N | S31651 | 80 [550] | 35 [240] |
| TP316LN | S31653 | 75 [515] | 30 [205] |
| TP317 | S31700 | 75 [515] | 30 [205] |
| TP317L | S31703 | 75 [515] | 30 [205] |
ASTM A312 Stainless Steel Pipe Tolerances
Outside Diameter
| Outside Diameter, NPS | Tolerance, Inch |
|---|---|
| 1/8 To 1-1/2, Incl | Over 1/16 Under 1/32 |
| Over 1-1/2 To 4, Incl | Over 1/32 Under 1/32 |
| Over 4 To 8, Incl | Over 1/16 Under 1/32 |
| Over 8 To 18, Incl | Over 3/32 Under 1/32 |
| Over 18 To 26, Incl | Over 1/8 Under 1/32 |
| Over 26 To 34, Incl | Over 5/32 Under 1/32 |
| Over 34 To 48, Incl | Over 3/16 Under 1/32 |
Wall Thickness
| NPS | Wall Thickness Tolerance, % |
|---|---|
| 1/8 To 2-1/2 Incl., All T/D Ratios | Over 20.2 Under 12.5 |
| Over 3 To 18 Incl., T/D Up To 5% Incl. | Over 22.5 Under 12.5 |
| Over 3 To 18, Incl., T/D > 5% | Over 15.0 Under 12.5 |
| 20 And Large, Welded, All T/D Ratios | Over 17.5 Under 12.5 |
| 20 And Large, Seamless, T/D Up To 5% Incl. | Over 22.5 Under 12.5 |
| >20 And Large, Seamless, T/D > 5% | Over 15.0 Under 12.5 |
ASTM A312 Welded And Seamless Pipe Sizes And Chart
| ominal Size | OD | Wall Thickness, SCHEDULE | |||||
|---|---|---|---|---|---|---|---|
| NPS | DN | Mm | 5S | 10S | 40S | STD | 80S |
| 1∕8 | 6 | 10.3 | – | 1.24 | 1.73 | 1.73 | 2.41 |
| 1∕4 | 8 | 13.7 | – | 1.65 | 2.24 | 2.24 | 3.02 |
| 3∕8 | 10 | 17.2 | – | 1.65 | 2.31 | 2.31 | 3.2 |
| 1∕2 | 15 | 21.3 | 1.65 | 2.11 | 2.77 | 2.77 | 3.73 |
| 3∕4 | 20 | 26.7 | 1.65 | 2.11 | 2.87 | 2.87 | 3.91 |
| 1 | 25 | 33.4 | 1.65 | 2.77 | 3.38 | 3.38 | 4.55 |
| 1 1∕4 | 32 | 42.2 | 1.65 | 2.77 | 3.56 | 3.56 | 4.85 |
| 1 1∕2 | 40 | 48.3 | 1.65 | 2.77 | 3.68 | 3.68 | 5.08 |
| 2 | 50 | 60.3 | 1.65 | 2.77 | 3.91 | 3.91 | 5.54 |
| 2 1∕2 | 65 | 73 | 2.11 | 3.05 | 5.16 | 5.16 | 7.01 |
| 3 | 80 | 88.9 | 2.11 | 3.05 | 5.49 | 5.49 | 7.62 |
| 3 1∕2 | 90 | 101.6 | 2.11 | 3.05 | 5.74 | 5.74 | 8.08 |
| 4 | 100 | 114.3 | 2.11 | 3.05 | 6.02 | 6.02 | 8.56 |
| 5 | 125 | 141.3 | 2.77 | 3.4 | 6.55 | 6.55 | 9.53 |
| 6 | 150 | 168.3 | 2.77 | 3.4 | 7.11 | 7.11 | 10.97 |
| 8 | 200 | 219.1 | 2.77 | 3.76 | 8.18 | 8.18 | 12.7 |
| 10 | 250 | 273.1 | 3.4 | 4.19 | 9.27 | 9.27 | 12.7 |
| 12 | 300 | 323.9 | 3.96 | 4.57 | 9.53 | 9.53 | 12.7 |
| 14 | 350 | 355.6 | 3.96 | 4.78 | – | 9.53 | – |
| 16 | 400 | 406.4 | 4.19 | 4.78 | – | 9.53 | – |
| 18 | 450 | 457.2 | 4.19 | 4.78 | – | 9.53 | – |
| 20 | 500 | 508 | 4.78 | 5.54 | – | 9.53 | – |
| 22 | 550 | 558.8 | 4.78 | 5.54 | – | 9.53 | – |
| 24 | 600 | 609.6 | 5.54 | 6.35 | – | 9.53 | – |
| 26 | 650 | 660.4 | – | – | – | 9.53 | – |
| 28 | 700 | 711.2 | – | – | – | 9.53 | – |
| 30 | 750 | 762 | 6.35 | 7.92 | – | 9.53 | – |
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