ASTM A213 Seamless Heat Exchanger Ferritic and Austenitic Alloy Steel Tubes
Product Details
carbon steel tube
,heat exchanger tubes
ASTM A213 Seamless Ferritic and Austenitic Alloy Steel Boiler Superheater 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
Flaring 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 suitable for inspection
Ferritic alloy hot-finished steel tubes are freee of loose scale and suitbale for inspection.
Reference Documents:
ASTM A262 Practices for Detecting Susceptibility to Intergranular Attach In Austenitic Stainless Steels
ASTM A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroallys
ASTM A1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
E112 Test Methods for Determining Average Grain Size
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