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ASTM A213 alloy tube

ASTM A213 Alloy Tubes are been widely used in high temperature services especially for the boiler and superheater.

ASTM A213 tubing has been widely used in high temperature services especially for the boiler and superheater. Tube material could be in alloy steel and stainless steel, and manufactured in seamless of hot rolled or cold drawn. so this pipe usually used in very important places and the price is much higher than normal carbon pipes. Common grades are T9, T11, T12, T21, T22, T91 and stainless grades in TP304 or TP316.

ASTM A213 Alloy Tubes material could be in alloy steel and stainless steel, and manufactured in seamless of hot rolled or cold drawn. So this pipe usually used in very important places and the price is much higher than normal carbon pipes.

Sunny Steel Supply stocks a full range of the following ASTM A213 grades:

Main grades: ASTM A213 T5, T5b, T9, T11, T91 and T22

Size range:

  • NPS 1/4” to NPS 24”
  • Wall Thickness – Schedules 40 through 160, STD, XS, XXS.
  • Unscheduled heavy wall pipe thicknesses available up to 4 inches.

ASTM A213 Standard Scope:

ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.

1.1 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T91, TP304, etc. These steels are listed in Tables 1 and 2.
1.2 Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements.
1.3 The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

ASTM A213M-09 Material Comparison Tables (ASTM →KS, JIS, DIN, BS, NBN, NF, UNI)

Table 1-1:

Grade UNS Designation C Mn P S Si
T2 K11547 0.10–0.20 0.30–0.61 0.025 0.025B 0.10–0.30
T5 K41545 0.15 0.30–0.60 0.025 0.025 0.5
T5b K51545 0.15 0.30–0.60 0.025 0.025 1.00–2.00
T5c K41245 0.12 0.30–0.60 0.025 0.025 0.5
T9 K90941 0.15 0.30–0.60 0.025 0.025 0.25–1.00
T11 K11597 0.05–0.15 0.30–0.60 0.025 0.025 0.50–1.00
T12 K11562 0.05–0.15 0.30–0.61 0.025 0.025B 0.5
T17 K12047 0.15–0.25 0.30–0.61 0.025 0.025 0.15–0.35
T21 K31545 0.05–0.15 0.30–0.60 0.025 0.025 0.50–1.00
T22 K21590 0.05–0.15 0.30–0.60 0.025 0.025 0.5
T23 K40712 0.04–0.10 0.10–0.60 0.03 0.01 0.5
T24 K30736 0.05–0.10 0.30–0.70 0.02 0.01 0.15–0.45
T36 K21001 0.10–0.17 0.80–1.20 0.03 0.025 0.25–0.50
T91 K90901 0.07–0.14 0.30–0.60 0.02 0.01 0.20–0.50
T92 K92460 0.07–0.13 0.30–0.60 0.02 0.01 0.5
T122 K91271 0.07–0.14 0.7 0.02 0.01 0.5
T911 K91061 0.09–0.13 0.30–0.60 0.02 0.01 0.10–0.50

Table1-2:

Grade UNS Designation Vana-
dium
Boron Niobium Nitrogen Aluminum Tungsten
T2 K11547
T5 K41545
T5b K51545
T5c K41245
T9 K90941
T11 K11597
T12 K11562
T17 K12047 0.15
T21 K31545
T22 K21590
T23 K40712 0.20–0.30 0.0010–0.006 0.02–0.08 0.015 0.03 1.45–1.75
T24 K30736 0.20–0.30 0.0015–0.007 0.012 0.02
T36 K21001 0.02 0.015–0.045 0.02 0.05
T91 K90901 0.18–0.25 0.06–0.10 0.030–0.07  0.02
T92 K92460 0.15–0.25 0.001–0.006  0.04–0.09 0.030–0.07 0.02 1.5–2.00
T122 K91271 0.15–0.30 0.0005–0.005 0.04–0.10 0.040– 0.02 1.50–2.50
T911 K91061 0.18–0.25 0.0003–0.006 0.06–0.10 0.040–0.09 0.02 0.90–1.10

Note:

A Maximum, unless range or minimum is indicated. Where ellipses (…) appear in this table, there is no requirement, and analysis for the element need not be determined or reported.

B It is permissible to order T2 and T12 with a sulfur content of 0.045 max. See 16.3.

C Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering.

Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.

Size range:

NPS, inch
Outside Diameter(mm)
Wall Thickness(mm)
Max. Length(M)
1/8
10,3
1,24; 1,73; 2,40
12
1/4
13,7
1,65; 2,24; 3,02
3/8
17,1
1,65; 2,31; 3,20
1/2
21,3
1,65; 2,11; 2,77; 3,73
3/4
26,7
1,65; 2,11; 2,87; 3,91
1
33,4
1,65; 2,77; 3,38; 4,55
10
1 1/4
42,4
1,65; 2,77; 3,56; 4,85
1 1/2
48,3
2,77; 3,68; 5,08
2
60,3
3,91; 5,54
7
2 1/2
73,0
5,16; 7,01

TABLE 1 Chemical Composition Limits, %

A, for Low Alloy SteelA Maximum, unless range or minimum is indicated. Where ellipses (…) appear in this table, there is no requirement, and analysis for the element need not be determined or reported.

B, It is permissible to order T2 and T12 with a sulfur content of 0.045 max. See 16.3.

C, Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering. Hardness testing shall be performed at mid-thickness of the product. Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.


Inspection:

Ubend tubes

ASTM Standards

  • A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
  • A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
  • A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
  • E112 Test Methods for Determining Average Grain Size

ASTM A213 Stainless Steel Tubing Specification

ASTM A213 standard is a common used specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Super heater, and Heat-Exchanger Tubes, offering manufacture and purchasing requirements for manufactures and users, main information contain grade, size, finishes, test and other terms, the equivalent standard is ASME SA213.

ASTM A213 Ferritic And Austenitic Alloy–Steel Material Grades

ASTM A213 Specification covers material containing alloy steels, Ferritic and Austenitic steels, Austenitic stainless steel is the most used group due to their properties, common designated grades are listed, in table 1 for chemical composition, table 2 for mechanical properties and solution temperature.

Table 1, chemical composition %

Grade C Si Mn Cr Ni Mo S P
TP304 0,08 1,0 2 18 – 20 8 – 11 0,03 0,045
TP304L 0,035 1,0 2 18 – 20 8 – 12 0,03 0,045
TP316 0,08 1,0 2 16 – 18 11 – 14 2 – 3 0,03 0,045
TP316L 0,035 1,0 2 16 – 18 10 – 14 2 – 3 0,03 0,045
TP321 0,08 1,0 2 17 – 19 9 – 12 0,03 0,045

Table 2, mechanical properties and solution temperature (Min, degree centigrade).

Grade Tensile Strength(Mpa) Yield Point(Mpa) Elongation(%) Hardness(HRB) Solution Temperature
TP304 515 205 35 90 1040
TP304L 485 170 35 90 1040
TP316 515 205 35 90 1040
TP316L 485 170 35 90 1040
TP321 515 205 35 90 1040
Seamless Tube Manufacturing Processes
  • The tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified.
  • Heat treatment shall be done separately and in addition to heating for hot forming.
  • The ferritic alloy and ferritic stainless steels shall be reheated. austenitic stainless steel tubes shall be furnished in the heat-treated condition.
  • Tubes may be individually quenched in water or rapidly cooled by other means.
  • Tubes shall be pickled free of scale. When bright annealing is used, pickling is not necessary.
  • Complete tests should be conducted conforming to ASTM A213 or ASTM A1016.
ASTM A213 Testing Requirement

Each tube shall be subjected to the nondestructive electric test or hydrostatic test, Manufacturer Material Test Certification as per EN 10204 3.1 should be provided.

  • Tensile property, Elogation
  • Hardness testing, Brinell, Rockwell, Vickers hardness
  • Flattening testing
  • Flaring testing
  • Hydrostatic or Nondestructive test
  • Intergranular Corrosion Test – ASTM A262/E (option)
ASTM A213 VS ASTM A269
  • ASTM A213 pertains to seamless tubes, ASTM A269 can be both seamless and welded tubing.
  • ASTM A213 material contain Ferritic and Austenitic Alloy Steel, ASTM A269 only has Austenitic Stainless Steel.
  • Dimensional tolerances on outside diameter and wall thickness are not the same.
  • ASTM A213 used in heat exchanger system, ASTM A269 is for general service use, commonly instrumentation tubing.
  • ASTM A213 has ASME version SA213 for alternative, however, there are is no ASME SA269.
  • In practise, ASTM A213 and ASTM A269 can be dual certified standard.

Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

A 213 – Seamless Alloy Steel Boiler and Heat Exchanger Tubes

ASTMSTANDARD UNS NO. KOREA/JAPANES GERMAN BRITISH FRENCH ITALIAN
KS/JIS Symbol KS/JIS Numbe Remarks DIN Type DIN Number Materiral Number Remarks B.S Number B.S Grade Remarks AFNOR Type NF Number Ramarks UNI Type UNI Number Ramarks
Grade T 5 K41545 STHA 24 / STBA 25 D3572 / G3462 (30)(24) 12 CrMo 19 5 1.7362 (3a) 3606 625 (30) TUZ12C A49-213 (3a)(32) Dalmine 234(3b)
Grade T 11 K11597 STHA 22 / STBA 24 D3572 / G3462 (30)(24) 13 CrMo 44 17175 1.7335 (8)(32) 3606 621 (30) 5.05 (3b)(32)

Dalmine 227(3b)

Grade T 12 K11562 STHA 21 / STBA 22 D3572 / G3462 (30)(24)

13 CrMo 44

17175 1.7335 (32) 3606 620 (30) TU 10 CD 5.05
Grade T 22 K21590 STHA 23 / STBA 24 D3572 / G3462 (30)(24) 10 CrMo 9 10 17175 1.7380 (32) 3606 622 (30)(32) (3a)(32) 12 CrMo 9 10 5462 Dalmine 235(3b)
TP 304 S30400 STS 304 TB / SUS 304 TB D3577 / G3463 (30)(24) X5 CrNi 18 9 17440 1.4301 (3b) 3606 304S25 (30) TU 10 CD 9.10 A49-218 (3b) X5 CrNi 18 10 6904 (3b)
TP 304L S31403 STS 304LTB / SUS 304LTB D3577 / G3463

(30)(24)

X2 CrNi 18 9 17440 1.4306 (3b) 3606 304S22 (30) Z 6 CN 18.09 A49-218 (3b) X2 CrNi 18 11 6904 (3b)
TP 310 S31000 STS 310STB/SUS 210STB D3577 / G3463 (30)(24) X12 CrNi 2528 1.4845

WBL-470(3b)

(3) Z 2 CN 18.09 (3) X22CrNi 25 20 6904 (3b)(11)
TP 316 S31600 STS 316TB / SUS 316TB D3577 / G3463 (30)(24) X5 CrNiMo 18 10 17440 1.4401 (3b) 3606 316S30 (30) A49-218 (3b) X5 CrNiMo 17 12 6904 (3b)
TP 316L S211603 STS 316LTB /SUS 316LTB D3577 / G3463 (30)(24) X2 CrNiMo 18 10 17440 1.4404 (3b) 3606 316S29 (30) Z 6 CND 17.12 A49-218 (3b) X2 CrNiMo 17 12 6904 (3b)
TP 321 S32100 STS 312TB/SUS 321TB D3577 / G3463 (30)(24) X10 CrNiTi 18 9 17440 1.4541 (3b) 3606 321S22 (30) Z2 CND 17.13 A49-218 (3b) X6 CrNiTi 18 11 6904 (3b)
TP 347 S34700 STS 347TB / SUS 347TB D3577 / G3463 (30)(24) X10 CrNiNb 18 9 17440 1.4550 (3b) 3606 347S17 (30) Z6 CNT 18.11 A49-218 (3b) X6 CrNiNb 18 11 6904 (3b)
Z 6 CNNb 18.11