MIL 2018-03-09T13:57:06+00:00

MIL-I-24768

Military Specifications

 

Industry Standard Cross Reference Guide

MIL-I-24768Insulation, Plastic, Laminated, Thermosetting.

Specifications for Sheet, Tube and Rod, to meet military requirements. This document is the most prevalent specification for materials that will be used in military applications. It describes fairly tight ranges for many of the material parameters.

Norplex-Micarta has a set of materials that has been tested and may be certified to MIL-I-24768. In some cases this requires a special material that has been engineered specifically by Norplex-Micarta to meet one or more of the test conditions or requirements.

 

Sheet Grades

Grade Type Description Norplex-Micarta Grades
/27 – GEE-F epoxy glass
flame retardant
NP130
NP130HF
NP510A
/28 – GEB-F epoxy glass
flame retardant
high temperature
MC511FR
/18 – GPG phenolic glass NP504
NP515LS
/8 – GMG melamine glass NP509
/17 – GSG (see note) silicone glass MC507U
/1 – GME melamine glass NP509
/2 – GEE epoxy glass NP500A
/3 – GEB epoxy glass
high temprature
NP572
MC511AF
MC511A
NP511
NP511EM
/16 – FBM phenolic canvas NP310
NP310HT
NP342
/14 – FBG phenolic canvas
electrical grade
NP310E
CF phenolic canvas
electrical post forming grade
NP318
/15 – FBI phenolic linen NP320
/13 – FBE phenolic linen
electrical grade
NP320E
MC320LE
/12 – PBM phenolic paper NP610
/19 – PBM-P phenolic paper
punching grade
NP611
NP611R
NP660
/20 – PBM-PC phenolic paper
cold punching grade
NP612
NP625
NP664
/11 – PBG phenolic paper NP629
/9 – NPG phenolic nylon NP101

MC507U does not meet all of the electrical properties of MIL-I-24768/17 – GSG. Contact us for assistance.

 

Convolute Wound Tube Grades

Grade TypeGrade Type Description Norplex-Micarta Grades
/27 – GEE-F epoxy glass
flame retardant
RT130
RT130M
RT130X
/18 – GPG
(see note)
phenolic glass RT504
RT504F
/8 – GMG melamine glass RT505
RT505F
/17 – GSG silicone glass RT507
RT507F
RT507L
/1 – GME melamine glass RT509
RT509F
/2 – GEE epoxy glass RT500
RT500F
RT500M
RT500X
RT520M
RT520MH
RT520X
RT571
/2 – GEE High Temperature
(see note)
epoxy glass
high temperature
RT511
RT511H
RT511F
RT511M
/16 – FBM phenolic canvas RT310
RT310H
RT310S
RT342
RT342H
/13 – FBE phenolic linen RTB320
RTB320H
RTB320S
RTB320X
RTB320Z
/12 – PBM phenolic paper RT610
/11 – PBG phenolic paper RT628
RT628H
RT629
/10 – PBE  phenolic paper RT630
RT630H
RT630S

Although phenolic glass tubing grades are recognized by NEMA, ASTM and MIL-I-24768 standards as a material form, property requirements are undefined at this time.

NEMA Standard LI-1 and MIL-I-24768 do not recognize a high temperature epoxy glass convolute rolled tube form, but, these materials are manufactured with a high temperature epoxy resin system, commonly used for NEMA G-11 and MIL-I-24768/27, type GEB sheet products, and do have improved thermal properties at elevated temperatures.

 

Rolled and Molded Rods

Grade Type Description Norplex-Micarta Grades
/27 – GEE-F epoxy glass
flame retardant
RM130
/18 – GPG
(see note)
phenolic glass RM504
/8 – GMG melamine glass RM505
/2 – GEE epoxy glass RM500A
/2 – GEE High Temperature
(see note)
epoxy glass
high temperature
RM511A
/16 – FBM phenolic canvas RM310
/14 – FBG phenolic canvas RM310E
/15 – FBI phenolic linen RM320
RM320H
/13 – FBE phenolic linen
electrical grade
RM320LE
/11 – PBG phenolic paper RM629
/10 PBE  phenolic paper RM630

Although phenolic glass tubing grades are recognized by NEMA, ASTM and MIL-I-24768 standards as a material form, property requirements are undefined at this time.

NEMA Standard LI-1 and MIL-I-24768 do not recognize a high temperature epoxy glass convolute rolled tube form, but, these materials are manufactured with a high temperature epoxy resin system, commonly used for NEMA G-11 and MIL-I-24768/27, type GEB sheet products, and do have improved thermal properties at elevated temperatures.

 

Does a new design challenge require a unique material solution?
Speak with one of our applications engineers to discuss how Norplex-Micarta’s thermoset composites can be designed your specific application.

Speak with one of our applications engineers