SPW Product Catalogue 2019

CONSUMABLES CLASSIFICATION TABLES
AS/NZS 4855: 2007 Covered Electrodes for Manual Metal Arc Welding of Non-Alloy and Fine
Grain Steels
AS/NZS 4855 classifies Manual Metal Arc Welding (MMAW / Stick) electrodes by using a series of letters and digits broken into alpha numeric groups.
The following layout outlines this classification system in part only. For full details Thermadyne recommend you refer to the current published version
of AS/NZS 4855, obtainable from the Standards Association of Australia or Standards New Zealand.
B E 49 18 A U H 10
6
B
E
B System Classifivcation – based on tensile strength and average impact energy of 27J of all-weld metal
Electrode – the first part gives a symbol indicating the product/process to be identified
49 The second part gives a symbol indicatiing the strength of all-weld metal (see Table 1B)
18 The third part gives a symbol indicating the tupe of electrode covering, the type of current and the welding position (see Table 4B)
The fourth part gives a symbol indicating the chemical composition of all-weld metal (see Table 3B)
A
The fifth part gives a symbol indicating the condition of post-weld heat treatment under which the alll-weld metal test was conducted: A = as
welded; P = post weld heat treated
U
The sixth part gives a symbl indicating that the electrode has satisfied a requirement for 47J impact energy at the temperature normally used for
the 27J requirement
H 10
The seventh part gives a symbol indicating the hydrogen content of deposited metal (see Table 7).
TABLE 1B – Symbol for strength of all-weld metal
(classification by tensile strength and 27J impact energy)
Symbol lMinimum tensile strength MPa
43 430
49 490
55 550
57 570
AS/NZS 4855: 2007 Covered Electrodes for Manual Metal Arc Welding of Non-Alloy and Fine
Grain Steels
TECHNICAL
TABLE 3B – Symbol for chemical composition
of all-weld metal
(classification by tensile strength and 27J impact energy)
Chemical composition
Alloy Symbol Principal alloy element(s) Nominal level mass %
No symbol, Mn 1
-1, or -P1
-1M3 Mo 0.5
-3M2 Mn 1.5
Mo 0.4
-3M3 Mn 1.5
Mo 0.5
-N1 Ni 0.5
-N2 Ni 1
-N3 Ni 1.5
-3N3 Mn 1.5
Ni 1.5
-N5 Ni 2.5
-N7 Ni 3.5
-N13 Ni 6.5
-2M3 Ni 1
Mo 0.5
-NC Ni 0.5
Cu 0.4
-CC Cr 0.5
Cu 0.4
-NCC Ni 0.2
Cr 0.6
Cu 0.5
-NCC2 Ni 0.3
Cr 0.2
-G Any other agreed composition
TABLE 4B – Symbol for type of covering
(classification by tensile strength and 27J impact energy)
Symbol Type of covering Welding positions* Type of current
03 Rutile basic All# AC & DC (±)
10 Cellulosic All DC (+)
11 Cellulosic All AC & DC (±)
12 Rutile All# AC & DC (–)
13 Rutile All# AC & DC (±)
14 Rutile + iron powder All# AC & DC (±)
15 Basic All# DC (+)
16 Basic All# AC & DC (+)
18 Basic + iron powder All# AC & DC (+)
19 Ilmenite All# AC & DC (±)
20 Iron oxide PA, PB AC & DC (–)
24 Rutile + iron powder PA, PB AC & DC (±)
27 Iron oxide + iron powder PA, PB AC & DC (–)
28 Basic + iron powder PA, PB, PC AC & DC (+)
40 Not specified Manufacturer’s recommendations
48 Basic All AC & DC (+)
*Positions are defined in ISO 6947. PA = flat;
PB = horizontal vertical fillet; PC = horizontal; PG = vertical down
#All position may or my not include vertical down welding.
This shall be specified in the manufacturer’s trade literature.
TABLE 7 – Symbol for hydrogen content of
deposited metal
Symbol
Hydrogen content max. ml/100g of deposited weld metal
H5 5
H10 10
H15 15
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