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Seamless Alloy Steel Pipes ASTM A213 T5 T9 T11 T22 T23 T91 T92 Cold Drawn Boiler Tube Hot / Cold Finished
Product Standard: ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
Main steel grades: T11,T12,T22...
Application: For Boiler, Superheater, and Heat-Exchanger.
Chemical Requirements:
| Chemical Requirements | |||||||||
| Grade | UNS Designation | Composition, % | |||||||
| C | Mn | p | S | Si | Cr | Mo | Other Elements | ||
| max | max | ||||||||
| T11 | K11597 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | |
Mechanical Properties:
Tensile Strength min: 60ksi/415MPa
Yield Strength min: 30ksi/205MPa
Heat Treatment Requirements:
| Heat Treatment Requirements | |||||
| Grade | UNS Number | Heat Treat Type | Austenitizing/Solutioning Temperature min or range | Cooling Media | Subcritical Annealing or Tempering Temperature min or range °F 【°C】 |
| T11 | K11597 | full or isothermal anneal normalize and temper | … | … | 1200°F【650°C】 |
Inspection and Test: chemical composition test, mechanical properties test(tensile, yield, elongation), process properties test(flatting, flaring, bending, hardness, impact, etc.), appearance and size test, non-destructive inspection test, hydrostastic test.
Delivery status: Annealed, normalized, normalized+Tempered, etc.
Surface treatment: oil impregnation, paint, passivation, phosphating, shot blasting etc.
Packing: Exporting package/wooden box /as requirement.
Mark: As required.
