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Surfacing Electrode - - WM - D516M

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Low Hydrogen Potassium	GB EDCrMn-A	F, V, OH, H	AC or DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
≤0.25	6.00-8.00	≤1.00	-	-	12.0-14.0	-	-	-	-	-	-

Hardness of Depostited 38 - 48.
Applications : Surfacing of sealing surface for high and middle pressure valves, working temperatures of which is below 450℃.

Surfacing Electrode - - WM - D516MA

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Low Hydrogen Potassium	GB EDCrMn-A	F, V, OH, H	AC or DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
≤0.25	6.00-8.00	≤1.00	-	-	12.0-14.0	-	-	-	-	-	-

Hardness of Depostited 38 - 48.
Applications : Surfacing of sealing surface for high and middle pressure valves, working temperatures of which is below 450℃.

Surfacing Electrode - - WM - D517

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Low Hydrogen Sodium	GB EDCr-B-15	F, V, OH, H	DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
≤0.25	-	-	-	-	10.0-16.0	-	-	-	-	-	≤5.00

Hardness of Depostited ≥ 45.
Applications: Surfacing and axles made of carbon steel and low alloy steel, valves, working temperatures of which is below 450℃.

Surfacing Electrode - - WM - D547Mo

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Low Hydrogen Sodium	GB EDCrNi-B-15	F	DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
≤0.18	0.60-5.00	3.80-6.50	≤0.030	≤0.040	14.0-21.0	6.50-12.0	3.50-7.00	-	-	0.50-1.20	≤2.50

Hardness of Depostited ≥ 37.
Applications : Surfacing and sealing surface for high pressure valves, working temperatures of which is below 600℃.

Surfacing Electrode - - WM - D557

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Low Hydrogen Sodium	GB EDCrNi-C-15	F	DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
≤0.20	2.00-3.00	5.00-7.00	≤0.030	≤0.040	18.0-20.0	7.0-10.0	-	-	-	-	-

Hardness of Depostited ≥ 37.
Applications : Surfacing and sealing surface for high pressure valves, working temperatures of which is below 600℃.

Surfacing Electrode - - WM - D577

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Low Hydrogen Sodium	GB EDCrMn-C-15 / JIS DF-ME	F	DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
≤1.10	12.0-18.0	≤2.00	-	-	12.0-18.0	≤6.00	≤4.00	-	-	-	≤3.00

Hardness of Depostited ≥ 28.
Applications : Surfacing and sealing surface for middle temperatures high pressure valves, working of temperatures of
which is below 510℃.

Surfacing Electrode - - WM - D608

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Graphite	GB ED Z-A1-08	F, V, OH, H	AC or DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
2.50-4.50	-	-	-	-	3.00-5.00	-	3.00-5.00	-	-	-	-

Hardness of Depostited ≥ 55.
Applications : Surfacing parts of agricaltural machinery and mining equipments worn and impacted by grits.

Surfacing Electrode - - WM - D618

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Graphite	-	F, V, OH, H	AC or DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
≤3.00	-	-	-	-	15.0-25.0	-	1.00-2.50	≤1.00	10.0-20.0	-	-

Hardness of Depostited ≥ 58.
Applications : Surfacing parts worn by grit, air, water at normal and middle temperature.

Surfacing Electrode - - WM - D638Nb

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Graphite	-	F	AC or DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
3.00-6.50	-	-	-	-	20.0-35.0	-	-	-	-	4.00-8.50	-

Hardness of Depostited ≥ 60.
Applications : Surfacing parts of excellent abrasion wear and high temperatures wear.

Surfacing Electrode - - WM - D642

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Lime Titania	GB ED ZCr-b-03	F	DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
1.50-3.50	≤1.00	-	-	-	22.0-32.0	-	-	-	-	-	≤7.00

Hardness of Depostited ≥ 45.
Applications : Surfacing structures of normal and high temperatures wear resistance, corronsion resistance.
Such as hydrauilc turbine vanes, parts of high pressure pump, etc.

Surfacing Electrode - - WM - D646

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Low Hydrogen Potassium	GB ED ZCr-B1-08	F	AC or DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
1.50-3.50	≤1.00	-	-	-	22.0-32.0	-	-	-	-	-	≤7.00

Hardness of Depostited ≥ 45.
Applications : Surfacing structures of normal and high temperatures wear resistance, corronsion resistance.
Such as hydrauilc turbine vanes, parts of high pressure pump, etc.

Surfacing Electrode - - WM - D658

Type of Covering	Equivalent Specification	Welding Position	Type of Current
Graphite	-	F	AC or DC+

Chemical Composition of Deposited Metal(%)

C	Mn	Si	S	P	Cr	Ni	Mo	V	W	Nb	Other Elements
3.00-6.50	-	-	-	-	20.0-35.0	-	4.00-9.50	0.50-2.50	2.50-7.50	4.00-8.50	-

Hardness of Depostited ≥ 60.
Applications : Surfacing parts of excellent wear and high temperatures wear.

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