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Quick Details

Alloy Or Not: Non-alloy
Technique: Cold Drawn
Secondary Or Not: Non-secondary
Place of Origin: China (Mainland)
Section Shape: Round
Outer Diameter: 6-168 mm
Thickness: 1-15 mm
Standard: ASTM
Standard: ASTM A213-2001
Production: Seamless Hot-Finish Or Cold-Finish
Application: For Boilers,Superheaters,Heat-Exchangers
Material: Ferritic And Austenitic Alloy Steel

Specifications

ASTM A213 Seamless Ferritic and Austenitic Alloy Steel Bolier Superhearter and Heat Exchanger Tubes

 

Applications: for Boilers,Superheaters,Heat-Exchangers


Size range: O.D.:6-168mm     W.T.:1-15mm      L: according to customer requirement         

 

Manufacture:

Seamless process by Hot-Finish  or Cold-Finish.

                  

                                       Steel Grade and Chemical Compositions:
Steel Grade C Mn P S Si Cr Mo
max max max max max min  
T5 0.15  0.30-0.60 0.025  0.025 0.5 4.0-6.0 0.45-0.65
T9 0.15  0.30-0.60 0.025  0.025 0.25-1.00 8.0-10.0 0.90-1.10
T11 0.05-0.15 0.30-0.60 0.025  0.025 0.50-1.00 1.0-1.50 0.44-0.65
T12 0.05-0.15 0.30-0.61 0.025  0.025 0.50 0.80-1.25 0.44-0.65
T21 0.05-0.15 0.30-0.60 0.025  0.025 0.50-1.00 2.65-3.35 0.80-1.06
T22 0.05-0.15 0.30-0.60 0.025  0.025 0.50 1.90-2.60 0.87-1.13

 

Steel Grade Tensile Strength Yield Strength Elongation Hardness.Max  
min.ksi [Mpa] min.ksi [Mpa] % Brinell/Vickers Rockwell
T5b 60[415] 30[205] 30 179HBW/190HV 89HRB
T9 60[415] 30[205] 30 179HBW/190HV 89HRB
T12 60[415] 32[220] 30 163HBW/170HV 85HRB
T91 85[585] 60[415] 20 250HBW/265HV 25HRC
T92 90[620] 64[440] 20 250HBW/265HV 25HRC

 

Mechanical Properties and Inspection:

Tensile Requirement

Hardness Requirement

Flattening Test

Flarring Test

Hydrostatic or Nondestructive Electric Test ( Eddy Current Test and Ultrasonic Test)

 

Surface Condition:

Ferritic Alloy cold-finished steel tubes are free of scale and stuitable for inspection

Ferritic alloy hot-finished steel tubes are freee of loose scale and sutibale for inspection.

 

 

 

  Reference Documents:

ASTM A262   Practices fir Detecting Susceptibility to Intergranular Attach In Austenitic Stainless Steels

 

ASTM A941  Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferropallys

 

ASTM A1016/A 1016M    Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes

 

E112    Test Methods for Determinging Average Grain Size