ISO/TR 24471:2019

TECHNICAL ISO/TR
REPORT 24471
First edition
2019-11
Brazing — Grouping systems for
materials — American materials
Reference number
©
ISO 2019
© ISO 2019
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ii © ISO 2019 – All rights reserved

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
Foreword
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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.
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iv © ISO 2019 – All rights reserved

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.
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
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
2 © ISO 2019 – All rights reserved

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
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
4 © ISO 2019 – All rights reserved

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
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
6 © ISO 2019 – All rights reserved

Table 1 (continued)
Standards bo
...