MIL-DTL-46100E (MR)
activity) and to the ballistic test agency. The ballistic test agency shall record the first
article ballistic test plates submitted, showing the dates tested. Requests from the procuring
activity to the ballistic test agency as to prior conformance with first article tests shall be
accompanied by copies of the first article test firing records. Any deviation(s) noticed by
the ballistic agency shall be brought to the attention of the contracting activity and to the
manufacturer.
3.1.1 First time producer. First time producers wishing to qualify to this specification shall
follow the instructions of 6.7.
3.2 Production acceptance.
3.2.1 Chemical composition. A declared chemistry shall be submitted to the contracting
agency or its authorized representative and to the ballistic test agency. The chemical
composition of the declared chemistry shall conform to the requirements of Table I, column
A, unless otherwise specified in the contract or purchase order (see 6.2). The chemical
composition shall be determined by a product analysis (values shall be listed as weight
percent) in accordance with 4.6.1.1 and 4.8.1. The first article samples and the production
test plates shall utilize the same declared chemistry within the allowable ranges proposed
for use in production. A statement showing the heat analysis of each melt and one product
analysis of each lot and complete details of the heat treatment of each lot shall be furnished
for the files of the purchaser at no cost. All elements of the chemical composition specified
in Table I shall be shown in the statement. This statement shall be attached to the
completed High Hard Armor Test Data Form (see Figure 1).
3.2.2 Carbon equivalence. Carbon equivalence (CE) shall be calculated for each heat per
ASTM A6/A6M, i.e.,
CE = C + [Mn/6] + [(Cr + Mo + V)/5] + [(Ni + Cu)/15]
where the elements are expressed in wt%.
3.2.2.1 Class 1. Class 1 steels shall have a CE of less than 0.80 wt%.
3.2.2.2 Class 2. Class 2 steels shall have no CE limit unless otherwise specified in the
contract or purchase order (see 6.2).
3.2.3 Heat treatment. All plates in each lot, including samples, shall receive the same heat
treatment except for such variations in tempering temperature as shall be necessary to
produce the prescribed hardness. Unless otherwise specified in the contract or purchase
order (see 6.2), local or general heating shall not be performed after the final heat treating
operation. This does not include preheating for welding or flame cutting, as long as the
tempering temperature is not exceeded (see 6.6 and 6.11). Tempering temperature shall be
reported on Figure 1.
3.2.4 Condition. Unless otherwise specified in the contract or purchase order (see 6.2),
plates shall be in the as-heat treated condition; surfaces shall not be pickled.
4
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business