ASTM A213 Pipe

Short Description:

Types: Seamless / ERW / Welded
Size: OD: 9.52-630mm WT: 0.59-40mm, Length: 0.5mtr-20mtr
Standard: ASTM A 213,ASME SA213/SA213M
Grade: TP304/L, TP316/L, TP317/L, TP321/H etc
Ends: Plain Ends / Beveled Ends
Application: Boiler, Superheater, and Heat-Exchanger, Pressure Vessel


Product Detail

Product Tags

A213/SA213 alloy tubing grades are T5, T9, T11, T12, T22, T91, stainless tubing are TP304/304L, TP316/316L

Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

Application:

These A213/SA213 are used in various application industry like Common industrial services (Petroleum, chemical, paper, fertilizer, fabric, aviation and nuclear) Fluid, gas and oil industry Heat transmission and pressure service ,Construction and ornamental,Boilers and Heat exchangers ,Decoration purpose, boiler, auto parts, medical device, food industry, building materials)

Chemical Composition Limits, %A, for Low Alloy Steel
Grade UNS
Designation
Composition, %
Carbon Manga- nese Phospho- rus Sul- fur Silicon Nickel Chromium Molybdenum Vana- dium Boron Niobium Nitrogen Aluminum Tungsten Other Elements
T2 K11547  0.10–0.20 0.30–0.61 0.025 0.025B 0.10–0.30 0.50–0.81 0.44–0.65
T5 K41545 0.15 0.30–0.60 0.025 0.025 0.50 4.00–6.00 0.45–0.65
T5b K51545 0.15 0.30–0.60 0.025 0.025 1.00–2.00 4.00–6.00 0.45–0.65
T5c K41245 0.12 0.30–0.60 0.025 0.025 0.50 4.00–6.00 0.45–0.65 Ti
4xC–0.70
T9 K90941 0.15 0.30–0.60 0.025 0.025 0.25–1.00 8.00–10.00 0.90–1.10
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
T12 K11562 0.05–0.15 0.30–0.61 0.025 0.025B 0.50 0.80–1.25 0.44–0.65
T17 K12047 0.15–0.25 0.30–0.61 0.025 0.025 0.15–0.35 0.80–1.25 0.15
T21 K31545 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 K21590 0.05–0.15 0.30–0.60 0.025 0.025 0.50 1.90–2.60 0.87–1.13
T23 K40712 0.04–0.10 0.10–0.60 0.030 0.010 0.50 0.40 1.90–2.60 0.05–0.30 0.20–0.30 0.0010– 0.02–0.08 0.015 0.030 1.45–1.75          Ti
0.006 0.005–0.060
Ti/N $
3.5C
T24 K30736 0.05–0.10 0.30–0.70 0.020 0.010 0.15–0.45 2.20–2.60 0.90–1.10 0.20–0.30 0.0015– 0.012 0.02 …                 Ti
0.007 0.06–0.10
T36 K21001 0.10–0.17 0.80–1.20 0.030 0.025 0.25–0.50 1.00–1.30 0.30 0.25–0.50 0.02 0.015–0.045 0.02 0.050 Cu
0.50–0.80
T91 K90901 0.07–0.14 0.30–0.60 0.020 0.010 0.20–0.50 0.40 8.0–9.5 0.85–1.05 0.18–0.25 0.06–0.10 0.030– 0.02 Ti 0.01
0.070 Zr 0.01
T92 K92460 0.07–0.13 0.30–0.60 0.020 0.010 0.50 0.40 8.5–9.5 0.30–0.60 0.15–0.25 0.001– 0.04–0.09 0.030– 0.02 1.5–2.00 Ti 0.01
0.006 0.070 Zr 0.01
T122 K91271 0.07–0.14 0.70 0.020 0.010 0.50 0.50 10.0–11.5 0.25–0.60 0.15–0.30 0.0005– 0.04–0.10 0.040– 0.02 1.50–2.50 Cu
0.005 0.100 0.30–1.70
Ti 0.01
Zr 0.01
T911 K91061 0.09–0.13 0.30–0.60 0.020 0.010 0.10–0.50 0.40 8.5–9.5 0.90–1.10 0.18–0.25 0.0003– 0.06–0.10 0.040– 0.02 0.90–1.10 Ti 0.01
0.006 0.090 Zr 0.01
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 15.3.
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.
Chemical Composition Limits, %A, for Austenitic and Ferritic Stainless Steel
Grade UNS
Designation
Composition, %
Carbon Manga- nese Phospho- rus Sul- fur Silicon Chromium Nickel Molybdenum Nitrogen B Niobium Tianium Other Elements
TP201 S20100 0.15 5.5-7.5 0.060 0.030 1.00 16.0-18.0 3.5-5.5 0.25
TP202 S20200 0.15 7.5-10.0 0.060 0.030 1.00 17.0-19.0 4.0-6.0 0.025
XM-19C S20910 0.06 4.0-6.0 0.045 0.030 1.00 20.5-23.5 11.5-13.5 1.5-3.00 0.20-0.40 0.10-0.30 V 0.10-0.30
C S21500 0.06–0.15 5.5–7.0 0.045 0.030 0.20–1.00 14.0–16.0 9.0–11.0 0.80–1.20 0.75–1.25 B 0.003–
0.009,
V 0.15–0.40
C S25700 0.02 2.00 0.025 0.010 6.5–8.0 8.0–11.5 22.0–25.0 0.50
TP304 S30400 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0
TP304L S30403 0.035D 2.00 0.045 0.030 1.00 18.0–20.0 8.0–12.0
TP304H S30409 0.04–0.10 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0
C S30432 0.07–0.13 1.00 0.040 0.010 0.30 17.0–19.0 7.5–10.5 0.05–0.12 0.30–0.60 Al 0.003–
0.030,
B 0.001–
0.010,
Cu 2.5–3.5
C S30434 0.07–0.14 2.00 0.040 0.010 1.00 17.5–19.5 9.0–12.0 0.10–0.40E 0.10–0.25E B 0.001–
0.004
Cu 2.50–
3.50
TP304N S30451 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 0.10–0.16
TP304LN S30453 0.035D 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 0.10–0.16
C S30615 0.016–0.24 2.00 0.030 0.030 3.2–4.0 17.0–19.5 13.5–16.0 Al 0.8–1.5
C S30815 0.05–0.10 0.80 0.040 0.030 1.40–2.00 20.0–22.0 10.0–12.0 0.14–0.20 Ce 0.03–0.08
TP309S S30908 0.08 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0
TP309H S30909 0.04–0.10 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0
TP309LMoN S30925 0.025 2.00 0.040 0.030 0.70 23.0–26.0 13.0–16.0 0.5–1.2 0.25–0.40
TP309Cb S30940 0.08 2.00 0.045 0.030 1.00 22.0–24.0 12.0–16.0 10xC–1.10
TP309HCb S30941 0.04–0.10 2.00 0.045 0.030 1.00 22.0–24.0 12.0–16.0 10xC-1.10
S30942 0.03–0.10 2.00 0.040 0.030 1.00 21.0–23.0 14.5–16.5 0.10–0.20 0.50–0.80 B=0.001–0.005
C S31002 0.02 2.00 0.020 0.015 0.15 24.0–26.0 19.0–22.0 0.10 0.10
TP310S S31008 0.08 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0
TP310H S31009 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0
TP310MoCbN S31025 0.10 1.50 0.030 0.030 1.00 19.5–23.0 23.0–26.0 1.0–2.0 0.10–0.25 0.10–0.40 0.20 B 0.002–
0.010
S31035 0.04–0.10 0.60 0.030 0.015 0.40 21.5–23.5 23.5–26.5 0.15–0.30 0.30–0.60 W 2.0–4.0
Co 1.0–2.0
Cu 2.0–3.5
B 0.002–
0.008
TP310Cb S31040 0.08 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 10xC-1.10
TP310HCb S31041 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 10xC-1.10
TP310HCbN S31042 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 0.15–0.35 0.20–0.60
TP310MoLN S31050 0.025 2.00 0.020 0.030 0.40 24.0–26.0 21.0–23.0 2.00–3.00 0.10–0.16
C S31060 0.05–0.10 1.00 0.040 0.030 0.50 22.0–24.0 10.0–12.5 0.18–0.25 Ce + La
0.025–0.070
B 0.001–0.010
C S31254 0.020 1.00 0.030 0.010 0.80 19.5–20.5 17.5–18.5 6.0–6.5 0.18–0.22 Cu 0.50–1.00
C S31272 0.08–0.12 1.50–2.00 0.030 0.015 0.30–0.70 14.0–16.0 14.0–16.0 1.00–1.40 0.30–0.60 B 0.004–
0.008
C S31277 0.020 3.00 0.030 0.010 0.50 20.5–23.0 26.0–28.0 6.5–8.0 0.30–0.40 Cu 0.50–1.50
TP316 S31600 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00
TP316L S31603 0.035D 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 2.00-3.00
TP316H S31609 0.04-0.10 2.00 0.045 0.030 1.00 16.0-18.0 11.0-14.0 2.00-3.00
TP316Ti S31635 0.08–0.12 2.00 0.045 0.030 0.75 16.0-18.0 10.0-14.0 2.00-3.00 0.1 5X
(C + N)–
0.70
TP316N S31651 0.08 2.00 0.045 0.030 1.00 16.0-18.0 10.0-13.0 2.00-3.00 0.10-0.16
TP316LN S31653 0.035D 2.00 0.045 0.030 1.00 16.0-18.0 10.0-13.0 2.00-3.00 0.10-0.16
TP317 S31700 0.08 2.00 0.045 0.030 1.00 18.0-20.0 11.0-15.0 3.0-4.0
TP317L S31703 0.035 2.00 0.045 0.030 1.00 18.0-20.0 11.0-15.0 3.0-4.0
TP317LM S31725 0.03 2.00 0.045 0.030 1.00 18.0-20.0 13.5-17.5 4.0-5.0 0.2 Cu 0.75
TP317LMN S31726 0.03 2.00 0.045 0.030 1.00 17.0-20.0 13.5-17.5 4.0-5.0 0.10-0.20 Cu 0.75
C S32050 0.030 1.50 0.035 0.020 1.00 22.0–24.0 20.0–23.0 6.0–6.8 0.21–0.32 Cu 0.40
TP321 S32100 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 5(C + N)–
0.70
TP321H S32109 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 4(C + N)–
C S32615 0.07 2.00 0.045 0.030 4.8–6.0 16.5–19.5 19.0–22.0 0.30–1.50 0.70 Cu 1.50–
2.50
C S33228 0.04–0.08 1.00 0.020 0.015 0.30 26.0–28.0 31.0–33.0 0.60–1.00 Ce 0.05–
0.10,
Al 0.025
C S33229 0.04–0.09 2.00 1.020 1.015 1.30 26.0–28.1 31.0–33.1 0.60–1.01 Ce 0.05–
0.10,
Al 0.026
TP347 S34700 0.08 2.00 0.045 0.030 1.00 17.0–20.0 9.0–13.0 10xC-1.10
TP347W S34705 0.05 2.00 0.040 0.030 1.00 17.0–20.0 8.00–11.0 0.10–0.25 0.25-0.50 V 0.20–0.50
W 1.50–2.60
TP347H S34709 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 8xC-1.10
TP347HFG S34710 0.06–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 8xC-1.10
TP347LN S34751 0.005–0.020 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 0.06–0.10 0.20-0.50F
TP348 S34800 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 G Co 0.20, Ta
0.10
TP348H S34809 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 H  Co 0.20, Ta
0.10
S35045 0.06–0.10 1.50 0.045 0.015 1.00 25.0–29.0 32.0–37.0 0.15-0.60 Al 0.15–0.60
Cu 0.75
XM-15 S38100 0.08 2.00 0.030 0.030 1.50–2.50 17.0–19.0 17.5–18.5
S38815 0.030 2.00 0.040 0.020 5.5–6.5 13.0–15.0 15.0–17.0 0.75–1.50 Cu 0.75–1.50
Al 0.30
800 N08800 0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 Al 0.15–0.60
Ti 0.15–0.60
FeI 39.5 min
800H N08810 0.05-0.10 1.50–2.00 0.045 0.015 1 19.0-23.0 30.0-35.0 Cu 0.75
Al 0.15–0.60
Ti 0.15–0.60
FeI 39.5 min
N08811 0.06-0.10 1.50–2.00 0.045 0.015 1 19.0-23.0 30.0-35.0  Cu 0.75
Al 0.15–0.60J
Ti 0.15–0.60J
FeI 39.5 min
N08904 0.02 2 0.04 0.03 1 19.0-23.0 23.0-28.0 4.0-5.0 0.1 Cu 1.00–2.00
N08925 0.02 1 0.045 0.03 0.5 19.0-21.0 24.0-26.0 6.0-7.0 0.10-0.20 Cu 0.80-1.50
N08926 0.02 2 0.03 0.01 0.5 19.0-21.0 24.0-26.0 6.0-7.0 0.15-0.25 Cu 0.80-1.50
TP444 S44400 0.03 1 0.04 0.03 1 17.5-19.5 K 1.75-2.50 0.035 L
AMaximum, unless a range or minimum is indicated. Where ellipses (…) appear in this table, there is no minimum and analysis for the element need not be determined or reported.
BThe method of analysis for Nitrogen shall be a matter of agreement between the purchaser and the producer.
CFor these alloys, there is no common grade designation. The UNS number uniquely identifies these alloys.
DFor small diameter or thin walls, or both, where many drawing passes are required, a carbon maximum of 0.040% is necessary in Grades TP304L, TP304LN, TP316L, and TP316LN.
EGrade S30434 shall have (Ti + 1⁄2 Nb) of not less than 2 times and not more than 4 times the carbon content.
FGrade TP347LN shall have an Nb content of not less than 15 times the carbon content.
GGrade TP348 shall have an Nb + Ta content of not less than 10 times the carbon content and not more than 1.10%. HGrade TP348H shall have an Nb + Ta content of not less than 8 times the carbon content and not more than 1.10%. IIron shall be determined arithmetically by difference of 100 minus the sum of the other specified elements.
J(Al + Ti) 0.85–1.20.
KGrade TP444 shall have Ni + Cu = 1.00 max.
LGrade TP444 shall have Ti + Nb = 0.20 + 4(C + N)–0.80.
Tensile and Hardness Requirements
Grade UNS Tensile Strength, Yield Strength, Elongation in 2 in. or HardnessA
Designation min, ksi min, ksi 50 mm, Brinell/Vickers Rockwell
[MPa] [MPa] min, %B,C
Low Alloy Steels:
T5b
K51545 60 [415] 30 [205] 30 179 HBW/ 89 HRB
T9 K90941 60 [415] 30 [205] 30 190HV
179 HBW/
89 HRB
T12 K11562 60 [415] 32 [220] 30 190HV
163 HBW/
85 HRB
T23 K40712 74 [510] 58 [400] 20 170 HV
220 HBW/
97 HRB
T24 K30736 85 [585] 60 [415] 20 230 HV
250 HBW/
25 HRC
T36 Class 1 K21001 90 [620] 64 [440] 15 265 HV
250 HBW/
25 HRC
T36 Class 2 K21001 95.5 [660] 66.5 [460] 15 265 HV
250 HBW/
25 HRC
T91 K90901 85 [585] 60 [415] 20 265 HV
190 to 250 HBW/
90 HRB to 25
T92 K92460 90 [620] 64 [440] 20 196 to 265 HV
250 HBW/
HRC
25 HRC
T122 K91271 90 [620] 58 [400] 20 265 HV
250 HBW/
25 HRC
T911 K91061 90 [620] 64 [440] 20 265 HV
250 HBW/
25 HRC
265 HV
All other low alloy grades 60 [415] 30 [205] 30 163 HB/
170 HV
85 HRB
Austenitic Stainless Steels:
TP201
S20100 95 [655] 38 [260] 35 219 HBW/ 95 HRB
TP202 S20200 90 [620] 45 [310] 35 230 HV
219 HBW/
95 HRB
XM-19 S20910 100 [690] 55 [380] 35 230 HV
250 HBW/
25 HRC
S21500 78 [540] 33 [230] 35 265 HV
192 HBW/
90 HRB
S25700 78 [540] 35 [240] 50 200 HV
217 HBW
95 HRB
TP304 S30400 75 [515] 30 [205] 35 192 HBW/ 90 HRB
TP304L S30403 70 [485] 25 [170] 35 200 HV
192 HBW/
90 HRB
TP304H S30409 75 [515] 30 [205] 35 200 HV
192 HBW/
90 HRB
S30432 86 [590] 34 [235] 35 200 HV
219 HBW/
95 HRB
S30434 73 [500] 30 [205] 35 230 HV
192 HBW/
90 HRB
TP304N S30451 80 [550] 35 [240] 35 200 HV
192 HBW/
90 HRB
TP304LN S30453 75 [515] 30 [205] 35 200 HV
192 HBW/
90 HRB
S30615 90 [620] 40 [275] 35 200 HV
192 HBW/
90 HRB
S30815 87 [600] 45 [310] 40 200 HV
217 HBW
95 HRB
TP309S S30908 75 [515] 30 [205] 35 192 HBW/ 90 HRB
TP309H S30909 75 [515] 30 [205] 35 200 HV
192 HBW/
90 HRB
TP309LMoN S30925 93 [640] 38 [260] 30 200 HV
256 HBW/270 HV
100 HRB
TP309Cb S30940 75 [515] 30 [205] 35 192 HBW/ 90 HRB
TP309HCb S30941 75 [515] 30 [205] 35 200 HV
192 HBW/
90 HRB
S30942 86 [590] 34 [235] 35 200 HV
219 HBW/
95 HRB
230 HV
S31002 73 [500] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP310S S31008 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP310H S31009 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP310MoCbN S31025 93 [640] 39 [270] 30 256 HBW/ 100 HRB
270 HV
S31035 95 [655] 45 [310] 40 220 HBW/ 96 HRB
230 HV
TP310Cb S31040 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP310HCb S31041 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP310HCbN S31042 95 [655] 43 [295] 30 256 HBW 100 HRB
TP310MoLN S31050
T # 0.25 in. [6 mm] 84 [580] 39 [270] 25 217 HBW 95 HRB
t > 0.25 in. [6 mm] 78 [540] 37 [255] 25 217 HBW 95 HRB
S31060 87 [600] 41 [280] 40 217 HBW 95 HRB
S31254
T # 0.187 in. [5 mm] 98 [675] 45 [310] 35 220 HBW/ 96 HRB
230 HV
T > 0.187 in. [5 mm] 95 [655] 45 [310] 35 220 HBW/ 96 HRB
230 HV
S31272 65 [450] 29 [200] 35 217 HBW 95 HRB
S31277 112 [770] 52 [360] 40 241 HBW 100 HRB
TP316 S31600 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP316L S31603 70 [485] 25 [170] 35 192 HBW/ 90 HRB
200 HV
TP316H S31609 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP316Ti S31635 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP316N S31651 80 [550] 35 [240] 35 192 HBW/ 90 HRB
200 HV
TP317 S31700 75 [515] 30 [205] 34 192 HBW/ 90 HRB
200 HV
TP317L S31703 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
S31725 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
S32050 98 [675] 48 [330] 40 256 HBW 100 HRB
TP321 S32100 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP321H S32109 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
S32615 80 [550] 32 [220] 25 192 HBW/ 90 HRB
200 HV
S32716 80 [240] 35 [240] 35 192 HBW/ 90 HRB
200 HV
S33228 73 [500] 27 [185] 30 192 HBW/ 90 HRB
200 HV
S34565 115 [790] 60 [415] 35 241 HBW 100 HRB
TP347 S34700 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP347W S34705 90 [620] 38 [260] 30 219 HBW/ 95 HRB
230 HV
TP347H S34709 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP347HFG S34710 80 [550] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP347LN S34751 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP348 S34800 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP348H S34809 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
S35045 70 [485] 25 [170] 35 192 HBW/ 90 HRB
200 HV
XM-15 S38100 75 [515] 30 [205] 35 192 HBW/ 90 HRB
S38815 78 [540] 37 [255] 30 200 HV
256 HBW
100 HRB
800 N08800
cold-worked
75 [515] 30 [205] 30 192 HBW/ 90 HRB
annealed
hot-finished
65 [450] 25 [170] 30 200 HV
192 HBW/
90 HRB
800H annealed
N08810
65 [450] 25 [170] 30 200 HV
192 HBW/
90 HRB
N08811 65 [450] 25 [170] 30 200 HV
192 HBW/
90 HRB
N08904 71 [490] 31 [215] 35 200 HV
192 HBW/
90 HRB
N08925 87 [600] 43 [295] 40 200 HV
217 HBW
95 HRB
N08926 94 [650] 43 [295] 35 256 HBW 100 HRB
Ferritic Stainless Steels TP444 S44400 60[415] 40[275] 20 217 HBW/ 230 HV 96 HRB
A Max, unless a range or a minimum is specified.
B  When standard round 2 in. or 50 mm gage length or smaller proportionally sized specimens with gage length equal to 4D (4 times the diameter) is used, the minimum elongation shall be 22 % for all low alloy grades except T23, T24, T91, T92, T122, and T911; and except for TP444.
C  For longitudinal strip tests, a deduction from the basic minimum elongation values of 1.00 % for TP444, T23, T24, T91, T92, T122, and T911, and of 1.50 % for all other low alloy grades for each 1⁄32-in. [0.8-mm] decrease in wall thickness below 5⁄16 in. [8 mm] shall be made.
Computed Minmum ValuesA
Wall Thickness Elongation in 2in or 50 mm, min,%
in. mm S44400, T23, T24, T91, T 36 All Other
T92, T122, and Ferritic Grades
T911
5⁄16  [0.312] 8 20 15 30
9⁄32  [0.281] 7.2 19 14 29
1⁄4  [0.250] 6.4 18 13 27
7⁄32  [0.219] 5.6 17 12 26
3⁄16  [0.188] 4.8 16 11 24
5⁄32  [0.156] 4 15 10 23
1⁄8  [0.125] 3.2 14 9 21
3⁄32  [0.094] 2.4 13 8 20
1⁄16  [0.062] 1.6 12 7 18
0.062 to 0.035, excl 1.6 to 0.9 12 7 17
0.035 to 0.022, excl 0.9 to 0.6 11 6 17
0.022 to 0.015 incl 0.6 to 0.4 11 6 16
A Calculated elongation requirements shall be rounded to the nearest whole number.
Permitted Variations in Average Wall Thickness for Hot Formed Tubes
NPS [DN] Designator Tolerance in Over %, from specified Under
1⁄8  to 21⁄2  [6 to 65] incl, all t/D ratiosA 20 12.5
Above 21⁄2  [65], t/D # 5 %A 22.5 12.5
Above 21⁄2  [65], t/D > 5 %A 15 12.5
A t = specified wall thickness D = specified outside diameter
Number of Tubes in a Lot Heat Treated by the Continuous Process or by Direct Quench After Hot Forming
Size of Tube Size of Lot
2 in. [50.8 mm] and over in outside diameter and 0.200 in. [5.1 mm] and over in wall thickness
2 in. [50.8 mm] and over in outside diameter and
under 0.200 in. [5.1 mm] in wall thickness Less than 2 in. [50.8 mm] but over 1 in. [25.4 mm] in outside diameter
1 in. [25.4 mm] or less in outside
diameter
not more than 50 tubes
not more than 75 tubes
not more than 75 tubes
not more than 125
tubes

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