ERNiFeCr-2

* Specification

AWS/ASME Spec 5.14

AWS Class ERNiFeCr-2

UNS N07718

* Chemical Composition,%

CMnSiCrSPNiFeCuAlMoTiNb+Ta
≤0.08≤0.35≤0.3517-21≤0.015≤0.01550-55Rest≤0.30.2-0.82.8-3.30.65-1.154.75-5.5

* Typical Welding Parameter & Mechanical Property

DiameterProcessVoltAmpsShielding Gas
Inmm
0.0350.9GMAW26-29150-190Spray Transfer 100% Argon
0.0451.2GMAW28-32180-220
1/161.6GMAW29-33200-250
1/161.6GTAW14-1890-130100% Argon
3/322.4GTAW15-20120-175100% Argon
1/83.2GTAW15-20150-220100% Argon
Tensile Strength MPa(ksi)Yield Strength MPa(ksi)Elongation %
AWS requirement1140(165)Not specifiedNot specified
Typical results as welded860(125)630(91)27

* Feature

Primarily for welding high strength aircraft components and liquid rocket components involving cryogenic temperatures.

High heat input processes such as MIG welding often result in micro fissuring. This alloy can be age hardened to higher strengths.

* Application

Used for welding alloys 718, 706 and X-750.