ASTM A249 TP201 Welded stainless steel pipe specification for welded austenitic steel boiler,superheater,heat-exchanger,and condenser tubes.
ASTM A249 TP201 covers nominal-wall-thickness welded tubes and heavily cold worked welded tubes made from the austenitic steels.
ASTM A249 TP201 chemical composition
| Grade | C | Mn | P | S | Si | Cr |
| TP201 | 0.15 | 5.5-7.5 | 0.060 | 0.030 | 1.00 | 16.0-18.0 |
ASTM A249 TP201 tensile and hardness requirements
| Grade | UNS | Tensile strength min,ksi mpa | Yield strength min,ksi mpa | Elongation in 2in.or 50mm min% | Rockwell hardness number,max |
| TP201 | S20100 | 95[655] | 38[260] | 35 | B95 |
ASTM A249 TP201 Welded stainless steel pipe size and thickness usually furnished to this specification are 1/8in.[3.2mm] in inside diameter to 12in.[304.8mm] in outside diameter and 0.015 to 0.320in.[0.4 to 8.1mm],inclusive,in wall thickness,tubing having other dimensions may be furnished,provide such tubes comply with all other requirements of this specification.
ASTM A249 TP201 Welded stainless steel pipe mechanical property requirements do not apply to tubing smaller than 1/8in.[3.2mm] in inside diameter or 0.015 in.[0.4mm] in thickness.
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