Navy Eddy Current Standard Test Block (Metric Version) 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: 22mm thick x 100mm wide x 175mm long (20) Fastener Holes from 4mm to 19mm 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 (Metric Version) 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: 22mm thick x 100mm wide x 175mm long (20) Fastener Holes from 4mm to 19mm 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 (Metric Version) 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: 22mm thick x 100mm wide x 175mm long (20) Fastener Holes from 4mm to 19mm 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 (Metric Version) 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: 22mm thick x 100mm wide x 175mm long (20) Fastener Holes from 4mm to 19mm 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 (Metric Version) 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: 22mm thick x 100mm wide x 175mm long (20) Fastener Holes from 4mm to 19mm 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 (Metric Version) 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: 22mm thick x 100mm wide x 175mm long (20) Fastener Holes from 4mm to 19mm diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: TITANIUM

Navy Eddy Current Standard Test Block (Metric Version) 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: 22mm thick x 100mm wide x 175mm long (20) Fastener Holes from 4mm to 19mm 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 (Metric Version) 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: 22mm thick x 100mm wide x 175mm long (20) Fastener Holes from 4mm to 19mm 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 (Metric Version) 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: 22mm thick x 100mm wide x 175mm long (20) Fastener Holes from 4mm to 19mm diameter. (40) Corner notches, (20) Bore notches, (9) Surface notches, (1) Tapered notch, (1) Radius notch Material: MONAL 800