The standard specifications include seamless, straight seam welded and heavily cold welded austenitic stainless steel tubing for high temperature and general corrosive service. There are several grades in this standard, and each steel grade shall confirm to the required chemical composition of C, Mn, P, S, Si, Cr and Cr, Ni, Mo, etc. All the pipes shall be furnished in the heat-treated condition in accordance with the required heat treating temperature and cooling/testing requirements. And also need to comply to the required tensile strength and yield strength.
Steel Grade | ASTM A312 Chemical Composition % Max | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
C | Mn | P | S | Si | Cr | Ni | Mo | N B | Nb | Ti | |
TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | … | … | … . | … |
TP304H | 0.04-0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | … | … | … | … |
TP304L | 0.035 D | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-13.0 | … | … | … | … |
TP310S | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 24.0-26.0 | 19.0-22.0 | 0.75 | |||
TP316 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 11.0-14.0 | 2.00-3.00 | … | … | … |
TP316L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | … | … | … |
TP316H | 0.04-0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 11.0-14.0 | 2.00-3.00 | … | … | … |
TP316Ti | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | 0.10 | … | 5x(C+N)-0.70 |
TP321 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | … | 0.10 | … | 5C-0.70 |
TP321H | 0.04-0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | … | … | … | 4C-0.60 |
TP347 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-13.0 | 10xC-1.00 | … | ||
TP347H | 0.04-0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-13.0 | … | … | 8xC-1.00 | … |
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 | JIS G3459 | DIN 17440 | BS | NF |
---|---|---|---|---|
TP304 | SUS 304 TP | X5CrNi 18 9 | 304S18 | A 49-230 |
TP304H | SUS 304 HTP | 304S59 | A 49-214 | |
TP310 | 304 LTP | X2 CrNi 19 9 | 304S14 | A 49-230 |
TP316 | SUS 304L TP | |||
TP316H | 310STP | X5 CrNiMo 18 10 | 316S18 | A 35-573 |
TP316L | SUS 316 TP | 316S59 | A 49-230 | |
TP321 | SUS 316 LTP | X2 CrNiMo 18 10 | 316S14 | A 49-230 |
TP347 | 316 HTP | x10 CrNiTi 18 9 | 321S18 | A 49-230 |
TP347H | SUS 316 LTP | X5 CrNiNb 18 9 | 347S18 | A 35-573 |
Welded Pipes And Tubes
Austenitic Stainless Steel
Corrosive Service Applications Forming
Seamless Welded Tubes
Heavily Cold Worked Steel Tubes
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ASTM A312 Seamless Welded and Heavily Cold Worked Austenitic Stainless Steel Pipes