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GB/T 41112-2021 (GB/T41112-2021)

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GB/T 41112-2021: PDF in English (GBT 41112-2021)
GB/T 41112-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 25.160.20
CCS J 33
Solid wire electrodes, solid wires and rods for fusion welding
of magnesium and magnesium alloys
(ISO 19288:2016, Welding consumables - Solid wire electrodes, solid wires and rods
for fusion welding of magnesium and magnesium alloys - Classification, MOD)
ISSUED ON: DECEMBER 31, 2021
IMPLEMENTED ON: JULY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions... 4 
4 Models ... 4 
5 Technical requirements ... 5 
6 Test methods ... 7 
7 Reinspection ... 8 
8 Supply technical conditions ... 8 
Annex A (informative) Comparison on structure number ... 9 
Annex B (informative) Technical differences between this Standard and ISO
19288:2016 and their reasons ... 10 
Annex C (informative) Welding wire model comparison ... 11 
Annex D (informative) Description of chemical composition classification ... 12 
Solid wire electrodes, solid wires and rods for fusion welding
of magnesium and magnesium alloys
1 Scope
This Standard specifies the models, technical requirements, test methods, re-inspection
and supply technical conditions of solid wire electrodes, solid wires and rods for fusion
welding of magnesium and magnesium alloys.
This Standard applies to magnesium and magnesium alloy solid welding wire and filler
wire (hereinafter referred to as "welding wire") used for molten inert gas arc welding
(MIG), tungsten inert gas arc welding (TIG), plasma arc welding, laser welding, laser-
MIG hybrid welding and other fusion welding.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 25775, Technical delivery conditions for welding consumables - Type of
product dimensions tolerances and markings (GB/T 25775-2010, ISO 544:2003,
MOD)
GB/T 25778, Procurement guidelines for welding consumables (GB/T 25778-2010,
ISO 14344:2010, MOD)
3 Terms and definitions
There are no terms and definitions that need to be defined in this Standard.
4 Models
4.1 Model division
Welding wire models are divided by chemical composition. Refer to Annex C for
comparison on the wire models between this document and other relevant standards.
4.2 Model preparation method
Annex D
(informative)
Description of chemical composition classification
D.1 Mg1611
The alloy contains 6.5% Al-0.3%Mn-1%Zn and a small amount of Be. It is used to weld
base metals of similar composition and AZ61A/UNSM11610. Mg1611 is generally
suitable for welding forgings of such alloys because of its low crack sensitivity.
D.2 Mg1922
The alloy contains 9% Al-0.3%Mn-2%Zn and a small amount of Be. It is used to weld
base metals of similar composition. Crack susceptibility is extremely low when welding
Mg-Al-Zn and AM100A/UNSM10100 castings with Mg1922 filler wire. Welds usually
have a precipitation heat treatment effect when repairing castings.
D.3 Mg1101
The alloy contains 10% Al-0.3%Mn-1%Zn and a small amount of Be. It can be used to
weld AZ92A/UNSM11920 castings.
D.4 Mg2331
The alloy does not contain Al and Mn but contains 2.5% Zn-0.75%Zr-3.2% rare earth
elements and a small amount of Be. It is used to weld wrought iron and cast materials
for high temperature service, such as UNSM12330. Such alloys are not suitable for
welding magnesium alloys containing aluminum due to severe cracking problems.
D.5 Mg1313, Mg1611A, Mg1911A
For welding magnesium-aluminum-zinc alloys such as:
- MgAl3Zn1/UNS M11311, UNS M11312 and UNS M11313;
- MgAl6Zn1/UNS M11610 and UNS M11611;
- MgAl9Zn1/UNS M11910, UNS M11911, UNS M11912, UNS M11913, UNS
M11914, UNS M11915, UNS M11916, UNS M11917, UNS M11918 and UNS
M11919.
They are used in electrodes and printed circuit boards. Aluminum is beneficial to
improve its strength.
D.6 Mg0602A
......
 
(Above excerpt was released on 2022-06-04, modified on 2022-06-04, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT41112-2021