MIL-DTL-32332 Detail Specifications: Ultra High Hardness Steel, Forged Armor Plate

The MIL-DTL-32332 standard, a United States military defense standard, covers quenched or quenched and tempered ultra-high hardness forged steel armor plate for light armor applications for thicknesses ordered up to 0.118 inches, including thicknesses ordered from 0.630 inches. The main purpose of ultra-high hardness is that although it is an armor appliqué, it can be used as an ultra-high hardness welded structural sheet if welded with special techniques.

Forged armor must be in the following classes as specified in the contract or purchase order:

• Class 1: Forged armor plate ordered from 46100 to 0.118 inches thick designed for puncture resistance better than the MIL-DTL-0.630 standard.
• Class 2: Forged armor plate of 1 to 0.118 inches in ordered thickness, designed for better puncture resistance than Class 0.630.

The main test methods performed under this standard are:

• Chemical analyzes: These analyzes are carried out according to the method specified in the ASTM A751 standard. The analysis must comply with the declared composition, which is formed in accordance with the requirements of the standard.
• Hardness tests: Brinell hardness tests are performed in accordance with ASTM E10 or ASTM E110 standards. Surface scale and decarburization will be removed from the areas where the tests will be carried out. However, it should not be lifted more than 0.060 inches from the test area.
• Charpy V-notch impact tests: At least six Charpy V-notch impact test samples are taken from the sample and prepared and tested according to ASTM E23 and ASTM A370 standards.
• Ballistic testing: The ballistic testing of the armor plate is carried out at an official institution, unless otherwise specified in the contract or purchase order. Testing requirements are included in the annex to this standard.

• Ultrasonic inspection: Ultrasonic soundness inspection equipment conforming to ASTM A578/A578M standard oshould be.

The standard annex describes the ballistic test method of ultra-high hardness armor plate, steel, forged (Appendix A). This appendix contains test requirements.

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