ASTM A312, A312M ASME SA312 / SA312M Stainless Steel Seamless Tube & Pipe
Standard: ASTM A312, A312M ASME SA312 / SA312M
Material/Steel Grade: TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Application: Seamless Austenitic Stainless Steel Pipes
Size: OD: 1/4″~20″ WT: SCH5S~SCH80S
Finish: Mill
Mechanical Properties
| Steel Grade | Tensile Strength, N/mm2 (min) | Yield Strength, N/mm2 (min) | Elongation, % (min) |
| TP304 | 515 | 205 | 35 |
| TP304L | 485 | 170 | 35 |
| TP316 | 515 | 205 | 35 |
| TP316L | 485 | 170 | 35 |
| TP321 | OD < 17,1 mm – 515; OD > 17,1 mm – 485 | OD < 17,1 mm – 205; OD > 17,1 mm – 170 | 35 |
Chemical Composition (%, max)
| Steel Grade | C | Si | Mn | Cr | Ni | Mo | S | P |
| TP304 | 0,08 | 0,75 | 2 | 18 – 20 | 8 – 11 | – | 0,03 | 0,04 |
| TP304L | 0,035 | 0,75 | 2 | 18 – 20 | 8 – 13 | – | 0,03 | 0,04 |
| TP316 | 0,08 | 0,75 | 2 | 16 – 18 | 11 – 14 | 2 – 3 | 0,03 | 0,04 |
| TP316L | 0,035 | 0,75 | 2 | 16 – 18 | 10 – 15 | 2 – 3 | 0,03 | 0,04 |
| TP321 | 0,08 | 0,75 | 2 | 17 – 20 | 9 – 13 | – | 0,03 | 0,04 |
