ISO/TR 24471:2019

TECHNICAL ISO/TR
REPORT 24471
First edition
2019-11
Brazing — Grouping systems for
materials — American materials
Reference number
ISO/TR 24471:2019(E)
©
ISO 2019

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ISO/TR 24471:2019(E)

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ii © ISO 2019 – All rights reserved

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ISO/TR 24471:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Basis for classification of base metals for brazing qualification . 1
4.1 Ferrous alloys . 1
4.2 Aluminium and alloys . 2
4.3 Copper and alloys . 2
4.4 Nickel and alloys . 2
4.5 Titanium and alloys . 2
4.6 Zirconium and alloys. 2
4.7 Magnesium alloys . 2
4.8 Cobalt alloys . 2
Bibliography .29
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ISO/TR 24471:2019(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
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iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 11, Qualification requirements for welding and allied processes personnel.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html. Official interpretations of
ISO/TC 44 documents, where they exist, are available from this page: https:// committee .iso .org/ sites/
tc44/ home/ interpretation .html.
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ISO/TR 24471:2019(E)

Introduction
This document mirrors the similar materials grouping system given in ISO/TR 20173 for welding of US
materials.
Parent materials have been grouped to minimize the number of brazer and brazing procedure
qualification tests. Substitution of one parent material for another, for any purpose other than for
qualification, even when within the allowable rules, should only be made after an evaluation of the
material’s suitability for its intended use. For some parent material substitutions, additional tests can
be appropriate to verify the suitability of the substituted parent material.
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TECHNICAL REPORT ISO/TR 24471:2019(E)
Brazing — Grouping systems for materials — American
materials
1 Scope
This document provides a grouping system for American parent materials for brazing.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Basis for classification of base metals for brazing qualification
Parent materials are grouped in Table 1 to Table 10.
Where classification is dependent on the amount of a given element, the controlling value is the
maximum content given in the parent material specification.
The tensile strength given in the tables is for the annealed condition. Where the minimum tensile
strength is not given, that value is established by the document referencing this document.
Subclauses 4.1 to 4.8 give the parent material group numbers for the materials listed.
4.1 Ferrous alloys
— 100  Steels containing 1 % or less chromium
— 110  Steels containing more than 1 % chromium (see NOTE 1).
— 120  Steels containing aluminium or titanium
— 130  Stainless steels, austenitic
— 140  Stainless steels, austenitic containing titanium of less than 0,3 %
— 145  Stainless steels, austenitic-ferritic (duplex)
— 150  Stainless steels, martensitic, and ferritic
— 160  Stainless steels, martensitic, and ferritic containing less than 0,3 % combined aluminium and
      titanium
— 170  Cast iron
— 180  Cast iron, austenitic
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ISO/TR 24471:2019(E)

NOTE 1 Steels with 12 % or greater chromium are included in stainless steels.
NOTE 2 Where the tensile strength given in the specification is dependent on parent material thickness, the
strength given in in the tables is the value for the thickest parent material, up to a limit of 25 mm.
4.2 Aluminium and alloys
— 200  Aluminium and aluminium alloys containing no magnesium
— 210  Aluminium alloys containing less than 1 % magnesium
— 220  Aluminium alloys containing 1 % or more magnesium
4.3 Copper and alloys
— 300  Copper and copper alloys
— 310  Copper alloys containing 0,5 % to 1 % lead
— 320  Copper alloys containing more than 1 % and no more than 7 % lead
— 330  Copper alloys containing more than 1 % silicon
— 340  Copper alloys containing 0,5 % to 1 % aluminium or beryllium
— 350  Copper alloys containing more than 1 % and no more than 5 % aluminium or beryllium
— 360  Copper alloys containing more than 5 % aluminium or beryllium
4.4 Nickel and alloys
— 400  Nickel and nickel-copper alloys
— 410  Nickel-molybdenum alloys
— 420  Nickel-chromium-iron and nickel-chromium-molybdenum alloys
— 430  Nickel-chromium-iron and nickel-chromium-molybdenum alloys containing less than 1,5 %
       combined aluminium and titanium
4.5 Titanium and alloys
— 500
4.6 Zirconium and alloys
— 600
4.7 Magnesium alloys
— 700
4.8 Cobalt alloys
— 800
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ISO/TR 24471:2019(E)

Table 1 — American grouping system for steels
Standards body Specification Type/Grade/Class Group No. Minimum
tensile strength
MPa
ASTM A27 N1 100
ASTM A27 N2 100
ASTM A27 U60-30 100
ASTM A27 60-30 100
ASTM A27 65-35 100
ASTM A27 70-36 100
ASTM A27 70-40 100
ASTM A36 100 400
ASTM A53 F 100 310
ASTM A53 E, A 100 331
ASTM A53 E, B 100 414
ASTM A53 S, A 100 331
ASTM A53 S, B 100 414
ASTM A105 100 483
ASTM A106 A 100 331
ASTM A106 B 100 345
ASTM A106 C 100 483
ASTM A113 A 100 414
ASTM A113 B 100 345
ASTM A113 C 100 331
ASTM A128 A 100
ASTM A128 B1 100
ASTM A128 B2 100
ASTM A128 B3 100
ASTM A128 B4 100
ASTM A128 D 100
ASTM A128 E1 100
ASTM A128 E2 100
ASTM A128 F 100
ASTM A131 A 100 400
ASTM A131 B 100 400
ASTM A131 CS 100
ASTM A131 D 100 400
ASTM A131 DS 100
ASTM A131 E 100 400
ASTM A131 AH32 100
ASTM A131 DH32 100
ASTM A131 EH32 100
ASTM A131 AH36 100
ASTM A131 DH36 100
ASTM A131 EH36 100
ASTM A135 A 100 331
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ISO/TR 24471:2019(E)

Table 1 (continued)
Standards body Specification Type/Grade/Class Group No. Minimum
tensile strength
MPa
ASTM A135 B 100 414
ASTM A139 A 100 331
ASTM A139 B 100 414
ASTM A139 C 100 414
ASTM A139 D 100 414
ASTM A139 E 100 455
ASTM A161 Low carbon 100 324
ASTM A161 T1 100 379
ASTM A178 A 100
ASTM A178 C 100 414
ASTM A179 100
ASTM A181 Class 60 100 414
ASTM A181 Class 70 100
ASTM A182 Class F1 100
ASTM A182 Class F2 100
ASTM A192 100 324
ASTM A202 A 100
ASTM A202 B 100 414
ASTM A203 A 100
ASTM A203 B 100
ASTM A203 D 100
ASTM A203 E 100
ASTM A204 A 100
ASTM A204 B 100
ASTM A204 C 100
ASTM A209 T1 100 379
ASTM A209 T1a 100 414
ASTM A209 T1b 100 365
ASTM A210 A1 100 414
ASTM A210 C 100
ASTM A213 T2 100 414
ASTM A214 100
ASTM A216 WCA 100
ASTM A216 WCB 100
ASTM A216 WCC 100
ASTM A217 WC1 100
ASTM A217 WC4 100
ASTM A217 WC5 100
ASTM A225 A 100
ASTM A225 B 100
ASTM A226 100 324
ASTM A236 A 100
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ISO/TR 24471:2019(E)

Table 1 (continued)
Standards body Specification Type/Grade/Class Group No. Minimum
tensile strength
MPa
ASTM A236 B 100
ASTM A236 C 100
ASTM A236 D 100
ASTM A236 E 100
ASTM A236 F 100
ASTM A236 G 100
ASTM A236 H 100
ASTM A242 1 100
ASTM A242 2 100
ASTM A250 T1 100
ASTM A250 T1a 100
ASTM A250 T1b 100
ASTM A266 Class 1 100
ASTM A266 Class 2 100
ASTM A266 Class 3 100
ASTM A283 A 100
ASTM A283 B 100
ASTM A283 C 100
ASTM A283 D 100
ASTM A284 C 100 414
ASTM A284 D 100 414
ASTM A285 A 100 310
ASTM A285 B 100 345
ASTM A285 C 100 379
ASTM A299 100
ASTM A302 A 100
ASTM A302 B 100
ASTM A302 C 100
ASTM A302 D 100
ASTM A333 1 100
ASTM A333 3 100
ASTM A333 6 100
ASTM A333 7 100
ASTM A333 8 100
ASTM A333 9 100
ASTM A334 1 100
ASTM A334 3 100
ASTM A334 6 100
ASTM A334 7 100
ASTM A334 8 100
ASTM A334 9 100
ASTM A335 P1 100 379
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ISO/TR 24471:2019(E)

Table 1 (continued)
Standards body Specification Type/Grade/Class Group No. Minimum
tensile strength
MPa
ASTM A335 P2 100 379
ASTM A335 P15 100 414
ASTM A336 F1 100
ASTM A336 F30 100
ASTM A336 F31 100
ASTM A350 LF1 100 414
ASTM A350 LF2 100
ASTM A350 LF3 100
ASTM A350 LF5 100
ASTM A350 LF9 100
ASTM A352 LCA 100 414
ASTM A352 LCB 100 448
ASTM A352 LCC 100
ASTM A352 LC1 100
ASTM A352 LC2 100
ASTM A352 LC3 100
ASTM A352 LC4 100
ASTM A356 1 100 483
ASTM A356 2 100 448
ASTM A356 5 100 483
ASTM A366 100
ASTM A369 FPA 100 331
ASTM A369 FPB 100 414
ASTM A369 FP1 100 379
ASTM A369 FP2 100 379
ASTM A381 Class Y35 100 414
ASTM A381 Class Y42 100 414
ASTM A381 Class Y46 100 434
ASTM A381 Class Y48 100 427
ASTM A381 Class Y50 100 441
ASTM A381 Class Y52 100 455
ASTM A381 Class Y56 100
ASTM A381 Class Y60 100
ASTM A381 Class Y65 100
ASTM A387 2 100 379
ASTM A414 A 100 310
ASTM A414 B 100 345
ASTM A414 C 100 379
ASTM A414 D 100 414
ASTM A414 E 100 448
ASTM A414 F 100 483
ASTM A414 G 100 517
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ISO/TR 24471:2019(E)

Table 1 (continued)
Standards body Specification Type/Grade/Class Group No. Minimum
tensile strength
MPa
ASTM A423 2 100
ASTM A426 CP1 100 448
ASTM A426 CP2 100 414
ASTM A426 CP15 100 414
ASTM A441 100 462
ASTM A442 55 100 379
ASTM A442 60 100 414
ASTM A455 I 100 483
ASTM A455 II 100 483
ASTM A486 Class 70 100 483
ASTM A486 Class 90 100
ASTM A487 Class 1 100
ASTM A487 Class 2 100
ASTM A487 Class 4 100
ASTM A487 Class 6 100
ASTM A487 Class 7 100
ASTM A487 Class 10 100
ASTM A487 Class 11 100 483
ASTM A487 Class 12 100 483
ASTM A487 Class 13 100
ASTM A487 Class 14 100
ASTM A487 Class A 100 414
ASTM A487 Class B 100 483
ASTM A487 Class C 100 483
ASTM A487 Class D 100 552
ASTM A500 A 100 310
ASTM A500 B 100 400
ASTM A500 C 100 427
ASTM A501 100 400
ASTM A512 MT 1010 100
ASTM A512 MT 1015 100
ASTM A512 MTX 1015 100
ASTM A512 MT 1020 100
ASTM A512 MTX 1020 100
ASTM A512 1025 100
ASTM A512 1110 100
ASTM A512 1115 100
ASTM A512 1030 100
ASTM A513 1008 100
ASTM A513 MT 1010 100
ASTM A513 MT 1015 100
ASTM A513 MTX 1015 100
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ISO/TR 24471:2019(E)

Table 1 (continued)
Standards body Specification Type/Grade/Class Group No. Minimum
tensile strength
MPa
ASTM A513 1016 100
ASTM A513 1017 100
ASTM A513 1018 100
ASTM A513 1019 100
ASTM A513 MT 1020 100
ASTM A513 MTX 1020 100
ASTM A513 1021 100
ASTM A513 1022 100
ASTM A513 1023 100
ASTM A513 1024 100
ASTM A513 1025 100
ASTM A513 1026 100
ASTM A513 1027 100
ASTM A513 1030 100
ASTM A513 1033 100
ASTM A513 1035 100
ASTM A513 8630 100
ASTM A515 55 100 379
ASTM A515 60 100 414
ASTM A515 65 100
ASTM A515 70 100
ASTM A516 55 100 379
ASTM A516 60 100 414
ASTM A516 65 100
ASTM A516 70 100
ASTM A519 1008 100
ASTM A519 1010 100
ASTM A519 MT 1010 100
ASTM A519 1012 100
ASTM A519 1015 100
ASTM A519 MT 1015 100
ASTM A519 MTX 1015 100
ASTM A519 1016 100
ASTM A519 1017 100
ASTM A519 1018 100
ASTM A519 1019 100
ASTM A519 1020 100
ASTM A519 MT 1020 100
ASTM A519 MTX 1020 100
ASTM A519 1021 100
ASTM A519 1022 100
ASTM A519 1025 100
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ISO/TR 24471:2019(E)

Table 1 (continued)
Standards body Specification Type/Grade/Class Group No. Minimum
tensile strength
MPa
ASTM A519 1026 100
ASTM A519 1030 100
ASTM A519 1035 100
ASTM A519 1040 100
ASTM A519 1045 100
ASTM A519 1050 100
ASTM A519 1118 100
ASTM A519 11L18 100
ASTM A519 1132 100
ASTM A519 1137 100
ASTM A519 1141 100
ASTM A519 1144 100
ASTM A519 1213 100
ASTM A519 12L14 100
ASTM A519 1215 100
ASTM A519 1330 100
ASTM A519 1335 100
ASTM A519 1340 100
ASTM A519 1345 100
ASTM A519 1518 100
ASTM A519 1524 100
ASTM A519 1541 100
ASTM A519 3140 100
ASTM A519 4012 100
ASTM A519 4023 100
ASTM A519 4024 100
ASTM A519 4027 100
ASTM A519 4028 100
ASTM A519 4037 100
ASTM A519 4042 100
ASTM A519 4047 100
ASTM A519 4063 100
ASTM A519 4118 100
ASTM A519 4337 100
ASTM A519 E4337 100
ASTM A519 4340 100
ASTM A519 E4340 100
ASTM A519 4422 100
ASTM A519 4427 100
ASTM A519 4520 100
ASTM A519 4615 100
ASTM A519 4617 100
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ISO/TR 24471:2019(E)

Table 1 (continued)
Standards body Specification Type/Grade/Class Group No. Minimum
tensile strength
MPa
ASTM A519 4620 100
ASTM A519 4621 100
ASTM A519 4718 100
ASTM A519 4720 100
ASTM A519 4815 100
ASTM A519 4817 100
ASTM A519 4820 100
ASTM A519 5015 100
ASTM A519 5115 100
ASTM A519 5120 100
ASTM A519 5132 100
ASTM A519 5140 100
ASTM A519 5145 100
ASTM A519 5150 100
ASTM A519 5155 100
ASTM A519 5160 100
ASTM A519 E50100 100
ASTM A519 6118 100
ASTM A519 6120 100
ASTM A519 8115 100
ASTM A519 8615 100
ASTM A519 8617 100
ASTM A519 8620 100
ASTM A519 8622 100
ASTM A519 8625 100
ASTM A519 8627 100
ASTM A519 8630 100
ASTM A519 8637 100
ASTM A519 8640 100
ASTM A519 8642 100
ASTM A519 8645 100
ASTM A519 8650 100
ASTM A519 8655 100
ASTM A519 8660 100
ASTM A519 8720 100
ASTM A519 8735 100
ASTM A519 8740 100
ASTM A519 8742 100
ASTM A519 8822 100
ASTM A519 9255 100
ASTM A519 9260 100
ASTM A519 9262 100
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ISO/TR 24471:2019(E)

Table 1 (continued)
Standards body Specification Type/Grade/Class Group No. Minimum
tensile strength
MPa
ASTM A519 9840 100
ASTM A519 9850 100
ASTM A519 50B40 100
ASTM A519 50B44 100
ASTM A519 50B46 100
ASTM A519 50B50 100
ASTM A519 50B60 100
ASTM A519 51B60 100
ASTM A519 81B45 100
ASTM A519 86B45 100
ASTM A519 94B15 100
ASTM A519 94B17 100
ASTM A519 94B3
...