Nickel-based alloy classification and composition comparison

A nickel-based alloy electrodes can be divided into five categories, namely, industrial pure Ni, Ni-Cu, Ni-Cr-Fe, Ni-Mo and Ni-Cr-Mo. Each category can be divided into one or more types of welding electrodes. This type of electrode is mainly used for welding nickel or high nickel alloy, sometimes can also be used for welding or overlay welding of dissimilar metals.

Second, how to choose nickel-based welding wire

1.ERNiCr-3

Used for welding 600, 601 and 800 alloy itself, and stainless steel and carbon steel between the dissimilar steel welding ERNiCrFe-7

Used to weld nickel-chromium-iron alloys within ASTM B163, 166, 167 and 168 standards

2.ERNiCrFe-6 for welding of steel and NiCrFe alloys, steel and stainless steel and nickel-based alloys

3.ERNiCrCoMo-1 is used for welding nickel-chromium-cobalt-molybdenum alloys and various high-temperature alloys for heterogeneous welding

4.ERNiCrMo-3

It is used for welding nickel alloy, carbon steel, stainless steel and low alloy steel, mainly for welding of 625, 601, 802 alloy and 9% nickel alloy.

5.ERNi-CI industrial pure nickel, used for welding of malleable and gray cast iron

6.ERCuNi is used for welding 70/30, 80/20, 90/10 copper-nickel alloys.

7.ERNi-Cu-7 for welding nickel-copper alloys B127, 163, 164 and 165 etc.

8.ERNi-1 is used for welding pure nickel castings and forgings, such as: ASTM B160, 161, 162, 163 standard alloys

9.ERNiFeMn-CI is used for the welding of nodular cast iron, ductile cast iron, malleable cast iron and gray cast iron themselves or for their welding with stainless steel, carbon steel, low alloy steel and various nickel alloys.

10.ERNiCrMo-4 is used for welding NiCrMo alloys by themselves or for welding NiCrMo alloys with steel and most other nickel-based alloys.

11.ERNiCrMo-11 is used for welding NiCrMo alloy itself, or NiCrMo alloy and steel and most other nickel-based alloys, and can also be used for overlay welding of NiCrMo alloy and steel welds.

12.ERNiCrMo-13 is used to weld low carbon nickel-chromium-molybdenum alloy

Three, nickel-based welding rod

1.ENiCrMo-3 is used for welding nickel-chromium-molybdenum alloy, such as 625, 800, 801, 825 and 600

2.ENiCrFe-3 is used for welding of NiCrFe alloy itself and welding with carbon steel

3.ENiCrFe-2 is used for dissimilar welding between austenitic steel, ferritic steel and high nickel alloys, and also for welding of 9% nickel alloys

4.ENiCu-7 is mainly used for dissimilar welding between nickel-copper alloy itself and steel

5.ENiCrFe-7 is used for welding of 690 (UNS N06690) nickel-chromium-iron alloy itself

6.ENiCrMo-4 is used to weld C-276 alloy and most other nickel-based alloys

7.ENiCrCoMo-1 is used for welding NiCrCoMo alloys and various high temperature alloys for dissimilar welding.

8.ERCuNi for welding forged or cast 70/30, 80/20, 90/10 copper-nickel alloys

9.ENiCrMo-13 is used to weld low carbon nickel-chromium-molybdenum alloys

10.ENiCrMo-11 is used for welding low carbon NiCrMo alloy

11.Pure nickel electrode A5.11 ENi-1 EL-NiTi3 ≥ 92 - - Ti2.5 - Welding of 200, 201 nickel alloys and nickel-plated steel sheets; - Welding of steel and nickel dissimilar materials; - Surface overlay welding of steel.

12. Nickel-copper electrode A5.11 ENiCu-7 EL-NiCu30Mn 65 - - Mn ≤ 4.0 The rest is copper - welding of Monel 400 alloy itself; and welding of Monel 400 alloy with steel; - for surface overlay welding of steel.

13.Copper-nickel electrodes A5.6 ECuNi S-CuNi30Mn ≥ 29 - - Mn2 remaining copper - for welding of copper-nickel alloys and specific bronze materials themselves, as well as for welding between these materials and Monel 400 alloy or Nickel200.

Nickel-chromium electrodes A5.11 ENiCrFe-2 EL-NiCr15FeNb ≥ 62 15 1.5 Mn2.5 Nb1.5 - for welding of creep-resistant joints, welding of dissimilar materials; - for welding of austenitic and ferritic steels and high nickel alloys, containing 9% nickel

IV. Composition comparison

1.Ni307 nickel and nickel alloy welding rod Model GB/T:ENiCrMo-0

Description:Low-hydrogen Ni70Cr15 heat-resistant corrosion-resistant alloy electrode, welding seam with the right amount of molybdenum, niobium and other alloying elements, the deposited metal has good crack resistance, using DC reverse connection.

Use: Used for welding nickel-based alloys with heat and corrosion resistance requirements, also can be used for some difficult to weld alloys, welding and overlay welding of dissimilar steels.

Deposited metal chemical composition /%

C≈0.05 Ni≈70 Fe≤7 Nb 3-5 Mo 2-6 Cr≈15

2.Ni307A nickel and nickel alloy welding rod Model GB/T:ENiCrFe-3 Equivalent to AWS:ENiCrFe-3

Description:Low-hydrogen Ni70Cr15 heat-resistant alloy electrode, welding seam with the right amount of manganese, niobium and other alloying elements, the deposited metal has good crack resistance, using DC reverse connection.

Use: Used for welding nickel-based alloys with heat and corrosion resistance requirements, such as Inconel 600, 601, etc. Can also be used for some difficult-to-weld alloys, dissimilar steel welding and overlay welding.

Chemical composition of deposited metal/%

C≤0.1 Mn 5-9.5 Si≤1 Ni 59 Fe≤10 Ti≤1 Nb+Ta 1-2.5

S≤0.015 P≤0.03 Cu≤0.5 Cr 13-17

3.Ni307B nickel and nickel alloy welding rod Model GB/T:ENiCrFe-3 Equivalent to AWS:ENiCrFe-3

Description:Low-hydrogen nickel-chromium heat-resistant alloy welding rod, the weld metal has a moderate amount of manganese, using DC reverse connection.

Uses:Used for welding nickel-based alloys with heat and corrosion resistance requirements, such as Inconel 600, 601, etc. Can also be used for welding of dissimilar steels or corrosion-resistant overlay materials.

Chemical composition of the deposited metal/%

C≤0.1 Mn 5-9.5 Si≤1 Ni≥59 Fe≤10 Ti≤1 Nb 1-2.5 S≤0.015

P≤0.03 Cu≤0.5 Cr 13-17

4.Ni317 nickel and nickel alloy welding rod

Description:Low-hydrogen nickel-chromium-molybdenum alloy electrode with a moderate amount of molybdenum in the weld metal and good anti-cracking properties.

Uses:Used for welding nickel-based alloy and chromium-nickel austenitic steel, also can be used for dissimilar steel welding.

Chemical composition of the deposited metal/%

C≤0.07 Mn 0.5-1.7 Si≤0.5 Ni 68-78 Nb 0.2-0.8 S≤0.012

P≤0.02 Mo 8.5-11 Cr 13.5-16.5

5.Ni327 nickel and nickel alloy welding rod Model GB/T:ENiCrMo-0 Equivalent to AWS:ENiCrMo-0

Description:Low-hydrogen Ni70Cr15 heat-resistant alloy electrode, the weld metal has the right amount of molybdenum, niobium and other alloying elements, the deposited metal has good crack resistance, using DC reverse connection.

Use: Used for welding nickel-based alloy with heat and corrosion resistance requirements, can also be used for some difficult to weld alloys, welding and overlay welding of dissimilar steel.

Deposited metal chemical composition /%

C ≤ 0.05 Mn 1-5 Si ≤ 0.75 Ni balance Fe 4-8 Nb + Ta 1.5-5.5 S ≤ 0.015 P ≤ 0.04 Mo 3-7.5 Cr 13-17

6.Ni337 nickel and nickel alloy welding rod Model GB/T:ENiCrMo-0 Equivalent to AWS: ENiCrMo-0

Description:Low-hydrogen nickel-chromium heat and corrosion resistant alloy electrode, the weld metal has the right amount of molybdenum, niobium and other alloy elements, has good crack resistance and corrosion resistance, wear resistance, good welding process, using DC reverse connection. Can be all-position welding.

Use: Used for nuclear reactor pressure vessel sealing surface overlay welding and tower components welding, can also be used for composite steel, dissimilar steel and the same type of nickel-based alloy welding.

Deposited metal chemical composition / %

C0.035 Mn2.35 Si0.28 Ni residual Fe6.28 Nb3.27 S0.015 P0.015

Co0.03 Mo4.8 Cr15.76

7.Ni347 nickel and nickel alloy welding rod Model GB/T:ENiCrFe-0

Description:Low-hydrogen nickel-chromium heat and corrosion resistant alloy electrode, weld metal has good crack resistance and corrosion resistance, good welding process, DC reverse connection, can be all-position welding.

Uses: Used for welding of nuclear power plant regulator, evaporator tube plate joint, also can be used for composite steel, dissimilar steel and the same type of nickel-based alloy welding.

Deposited metal chemical composition /%

C0.04 Mn4.65 Si0.13 Ni residual Fe5.92 Nb2.58 S0.02 P0.03 Co0.02 Al0.06 Cr18.55

8.Ni357 nickel and nickel alloy welding rod Model GB/T:ENiCrFe-2 Equivalent to AWS: ENiCrFe-2

Description:Low-hydrogen Ni70Cr15 nickel-based alloy electrode, the deposited metal contains appropriate amounts of manganese, molybdenum and niobium, with good crack resistance, using DC reverse connection.

Uses:Used for welding nickel-based alloy with heat and corrosion resistance requirements, also can be used for welding of dissimilar steel or as a transition layer and overlay welding rod.

Chemical composition of the deposited metal /%

C ≤ 0.1 Mn 1-3.5 Si ≤ 0.75 Ni ≥ 62 Fe ≤ 12 Nb + Ta0.5-3 S ≤ 0.02 P ≤ 0.03 Mo 0.5-2.5 Cr 13-17 Cu ≤ 0.5

9.HT-103 nickel and nickel alloy welding rod

Description:Low-hydrogen nickel-chromium-iron alloy electrode with excellent resistance to thermal cracking and intergranular corrosion and stress corrosion.

Uses:Used for nickel-based alloys and dissimilar steel welding, can also be used for welding large thickness ferrite steel components that can not be heat treated after welding.

Fused metal chemical composition /%

C ≤ 0.1 Mn 2-6 Si ≤ 0.1 Ni ≥ 67 Fe ≤ 4 Nb 1.5-3 S ≤ 0.015 P ≤ 0.02 Mo ≤ 2 Cr 18-22