Navy Eddy Current Standard Test Block Special Alloy The Air Force general purpose eddy current standard (Figure 4-55, Sheet 1 through Figure 4-55, Sheet 3) SHALL be the common standard used to perform ET’s on components within the Air Force. The standard made to the Navy configuration (Figure 4-56) may be used as a substitute for the Air Force general purpose eddy current standard. When using the Navy standard, calibrate on the long EDM notches for surface inspections and the corner notches in the upper layers for bolt hole inspections unless otherwise directed by a part specific procedure. Navy Universal Eddy Current Standard. A (3) plate assembly containing (20) fastener holes with a total of (71) EDM notches in various locations. Overall Dimensions: .875" thick x 4.0" wide x 7.0" long (20) Fastener Holes from .156 to .750" diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: Special Alloy

Navy Eddy Current Standard Test Block 6AL-4V Titanium The Air Force general purpose eddy current standard (Figure 4-55, Sheet 1 through Figure 4-55, Sheet 3) SHALL be the common standard used to perform ET’s on components within the Air Force. The standard made to the Navy configuration (Figure 4-56) may be used as a substitute for the Air Force general purpose eddy current standard. When using the Navy standard, calibrate on the long EDM notches for surface inspections and the corner notches in the upper layers for bolt hole inspections unless otherwise directed by a part specific procedure. Navy Universal Eddy Current Standard. A (3) plate assembly containing (20) fastener holes with a total of (71) EDM notches in various locations. Overall Dimensions: .875" thick x 4.0" wide x 7.0" long (20) Fastener Holes from .156 to .750" diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: 6AL-4V Titanium

Navy Eddy Current Standard Test Block 4340 Steel The Air Force general purpose eddy current standard (Figure 4-55, Sheet 1 through Figure 4-55, Sheet 3) SHALL be the common standard used to perform ET’s on components within the Air Force. The standard made to the Navy configuration (Figure 4-56) may be used as a substitute for the Air Force general purpose eddy current standard. When using the Navy standard, calibrate on the long EDM notches for surface inspections and the corner notches in the upper layers for bolt hole inspections unless otherwise directed by a part specific procedure. Navy Universal Eddy Current Standard. A (3) plate assembly containing (20) fastener holes with a total of (71) EDM notches in various locations. Overall Dimensions: .875" thick x 4.0" wide x 7.0" long (20) Fastener Holes from .156 to .750" diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: 4340 Steel

Navy Eddy Current Standard Test Block STAINLESS STEEL 304 The Air Force general purpose eddy current standard (Figure 4-55, Sheet 1 through Figure 4-55, Sheet 3) SHALL be the common standard used to perform ET’s on components within the Air Force. The standard made to the Navy configuration (Figure 4-56) may be used as a substitute for the Air Force general purpose eddy current standard. When using the Navy standard, calibrate on the long EDM notches for surface inspections and the corner notches in the upper layers for bolt hole inspections unless otherwise directed by a part specific procedure. Navy Universal Eddy Current Standard. A (3) plate assembly containing (20) fastener holes with a total of (71) EDM notches in various locations. Overall Dimensions: .875" thick x 4.0" wide x 7.0" long (20) Fastener Holes from .156 to .750" diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: STAINLESS STEEL 304

Navy Eddy Current Standard Test Block STAINLESS STEEL 316 The Air Force general purpose eddy current standard (Figure 4-55, Sheet 1 through Figure 4-55, Sheet 3) SHALL be the common standard used to perform ET’s on components within the Air Force. The standard made to the Navy configuration (Figure 4-56) may be used as a substitute for the Air Force general purpose eddy current standard. When using the Navy standard, calibrate on the long EDM notches for surface inspections and the corner notches in the upper layers for bolt hole inspections unless otherwise directed by a part specific procedure. Navy Universal Eddy Current Standard. A (3) plate assembly containing (20) fastener holes with a total of (71) EDM notches in various locations. Overall Dimensions: .875" thick x 4.0" wide x 7.0" long (20) Fastener Holes from .156 to .750" diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: STAINLESS STEEL 316

Navy Eddy Current Standard Test Block TITANIUM The Air Force general purpose eddy current standard (Figure 4-55, Sheet 1 through Figure 4-55, Sheet 3) SHALL be the common standard used to perform ET’s on components within the Air Force. The standard made to the Navy configuration (Figure 4-56) may be used as a substitute for the Air Force general purpose eddy current standard. When using the Navy standard, calibrate on the long EDM notches for surface inspections and the corner notches in the upper layers for bolt hole inspections unless otherwise directed by a part specific procedure. Navy Universal Eddy Current Standard. A (3) plate assembly containing (20) fastener holes with a total of (71) EDM notches in various locations. Overall Dimensions: .875" thick x 4.0" wide x 7.0" long (20) Fastener Holes from .156 to .750" diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: TITANIUM

Navy Eddy Current Standard Test Block 7075-T651/T73 Aluminum The Air Force general purpose eddy current standard (Figure 4-55, Sheet 1 through Figure 4-55, Sheet 3) SHALL be the common standard used to perform ET’s on components within the Air Force. The standard made to the Navy configuration (Figure 4-56) may be used as a substitute for the Air Force general purpose eddy current standard. When using the Navy standard, calibrate on the long EDM notches for surface inspections and the corner notches in the upper layers for bolt hole inspections unless otherwise directed by a part specific procedure. Navy Universal Eddy Current Standard. A (3) plate assembly containing (20) fastener holes with a total of (71) EDM notches in various locations. Overall Dimensions: .875" thick x 4.0" wide x 7.0" long (20) Fastener Holes from .156 to .750" diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: 7075-T651/T73 Aluminum

Navy Eddy Current Standard Test Block INCONEL 625 The Air Force general purpose eddy current standard (Figure 4-55, Sheet 1 through Figure 4-55, Sheet 3) SHALL be the common standard used to perform ET’s on components within the Air Force. The standard made to the Navy configuration (Figure 4-56) may be used as a substitute for the Air Force general purpose eddy current standard. When using the Navy standard, calibrate on the long EDM notches for surface inspections and the corner notches in the upper layers for bolt hole inspections unless otherwise directed by a part specific procedure. Navy Universal Eddy Current Standard. A (3) plate assembly containing (20) fastener holes with a total of (71) EDM notches in various locations. Overall Dimensions: .875" thick x 4.0" wide x 7.0" long (20) Fastener Holes from .156 to .750" diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: INCONEL 625

Navy Eddy Current Standard Test Block MONAL 800 The Air Force general purpose eddy current standard (Figure 4-55, Sheet 1 through Figure 4-55, Sheet 3) SHALL be the common standard used to perform ET’s on components within the Air Force. The standard made to the Navy configuration (Figure 4-56) may be used as a substitute for the Air Force general purpose eddy current standard. When using the Navy standard, calibrate on the long EDM notches for surface inspections and the corner notches in the upper layers for bolt hole inspections unless otherwise directed by a part specific procedure. Navy Universal Eddy Current Standard. A (3) plate assembly containing (20) fastener holes with a total of (71) EDM notches in various locations. Overall Dimensions: .875" thick x 4.0" wide x 7.0" long (20) Fastener Holes from .156 to .750" diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: MONAL 800