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Alloy steel pipe & tube

The benefits of alloy steel pipe include its tensile strength, yield strength, fatigue resistance, toughness, and wear resistance.

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

Table 1-1:
Grade UNS Designation C Mn P S Si Nickel Chromium Molybdenum
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 0.5 ... 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 0.5 ... 4.00–6.00 0.45–0.65
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 0.5 ... 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 ...
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 0.5 ... 1.90–2.60 0.87–1.13
T23 K40712 0.04–0.10 0.10–0.60 0.03 0.01 0.5 0.4 1.90–2.60 0.05–0.30
T24 K30736 0.05–0.10 0.30–0.70 0.02 0.01 0.15–0.45 ... 2.20–2.60 0.90–1.10
T36 K21001 0.10–0.17 0.80–1.20 0.03 0.025 0.25–0.50 1.00–1.30 0.3 0.25–0.50
T91 K90901 0.07–0.14 0.30–0.60 0.02 0.01 0.20–0.50 0.4 8.0–9.5 0.85–1.05
T92 K92460 0.07–0.13 0.30–0.60 0.02 0.01 0.5 0.4 8.5–9.5 0.30–0.60
T122 K91271 0.07–0.14 0.7 0.02 0.01 0.5 0.5 10.0–11.5 0.25–0.60
T911 K91061 0.09–0.13 0.30–0.60 0.02 0.01 0.10–0.50 0.4 8.5–9.5 0.90–1.10
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
The recommended ASTM A213 alloy pipes/ tubes as below:

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

ASTM A213 T5 Superheater and Heat-Exchanger Tubes
A213 T5 Superheater Tubes
ASTM A213 T5 Standard covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes.
Measurment out diameter
ASTM A213 T5b alloy tube
ASTM A213 T5b Standard covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes.
ASTM A213 T9
ASTM A213 T9 alloy pipe
ASTM A213 T9 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Heat-Exchanger Tubes.
ASTM A213 T11
ASTM A213 T11 alloy pipe
ASTM A213 T91 tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified.
ASTM A213 T91
ASTM A213 T91 alloy tube
ASTM A213 T91 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.
ASTM A213 T22
ASTM A213 T22 alloy pipes
ASTM A213 T22 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.
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.

Table 2-1:

ASTM
STANDARD
UNS NO.
KOREA/JAPANES

GERMAN

KS/JIS Symbol
KS/JIS Numbe
Remarks
DIN Type

DIN
Number

Materiral
Number

Remarks

A 312

Seamless and WeldedAusteniticStainless Steel Pipe

TP 304 S30400 STS 304TP / SUS 304 TP D3576 / G3459 (16) X5CrNi 18 9 17440 1.4301 (3b)
TP 304H S30409 STS 304HTP / SUS 304HTP D3576 / G3459 (16) (3)
TP 304L S30403 STS 304LTP/SU D3576 / G3459 (16) X2 CrNi 19 9 17440 1.4306 (3b)
TP 310 S31000 304LTP D3576 / G3459 (16) (3)
TP 316 S31600 STS 310STP/SU D3576 / G3459 (16) X5 CrNiMo 18 10 17440 1.4401 (3b)
TP 316H S34609 310STP D3576 / G3459 (16) (3)
TP 316L S31603 STS 316TP / SUS 316TP D3576 / G3459 (16) X2 CrNiMo 18 10 17440 1.4404 (3b)
TP 321 S32100 STS 316HTP /SU D3576 / G3459 (16) x10 CrNiTi 18 9 17440 1.4541 (3b)
TP 347 S34700 316HTP D3576 / G3459 (16) X5 CrNiNb 18 9 1.4543 (3b)
TP 347H S34709 STS 316LTP /SU D3576 / G3459 (16) (3)
321LTP
STS 321TP / SUS 321TP
STS 347TP / SUS 347TP
STS 347HTP / SUS 347HTP

Table 2-2:

ASTM
STANDARD
UNS NO.
BRITISH
FRENCH
ITALIAN

B.S
Number

B.S Grade
Remarks
AFNOR Type
NF Number
Ramarks
UNI Type
UNI Number
Ramarks

A 312

Seamless and WeldedAusteniticStainless Steel Pipe

TP 304 S30400 3605 304S18 TU Z6 CN19-10 A 49-230 X5 CrNi 18 10 6904 (3b)
TP 304H S30409 3605 304S59 TU Z6 CN19-10 A 49-214 X8 CrNi 19 10 6904 (3b)
TP 304L S30403 3605 304S14 TU Z2 CN19-11 A 49-230 X2 CrNi 18 11 6904 (3b)
TP 310 S31000 X22 Cr Ni 25 20 6904 (3b)(11)
TP 316 S31600 3605 316S18 Z 6 CND 17.11 A 35-573 (3b) X5 CrNiMo 17 12 6904 (3b)
TP 316H S34609 3605 316S59 TUZ6CND17-12 A 49-230 X8 CrNiNb 17 12 6904 (3b)
TP 316L S31603 3605 316S14 TUNZ2CND17-12 A 49-230 X2 CrNiMo 17 12 6904 Dalmine 941(3b)
TP 321 S32100 3605 321S18 Z6 CNT 18.11 A 49-230 X6 CrNiTi 18 11 6904 (3b)
TP 347 S34700 3605 347S18 Z6 CNNb 18.11 A 35-573 (3b) X6 CrNiNb 18 11 6904 (3b)
TP 347H S34709 X6 CrNiNb 18 11 6904 (3b)
ASTM A213 Standard Scope:

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.
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.

The recommended Alloy pipes

We are specialized in offering precision engineered alloy steels, which are used in various engineering applications and can be availed in various grades like.

Please view the recommended Abrasion resistant pipe, bend, elbow, tee, reducers as below:

ASTM A213 T5b Seamless alloy tube
ASTM A213 T5b Standard covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes.
ASTM A213 T22
ASTM A213 T22 alloy pipes
ASTM A213 T22 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.
ASTM A335 P9 alloy pipe
ASTM A213 T91 alloy tube
ASTM A213 T91 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.


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