MIL2018-03-09T13:57:06-05:00

MIL-I-24768

Military Specifications

 

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 TypeDescriptionNorplex-Micarta Grades
/27 – GEE-Fepoxy glass
flame retardant
NP130
NP130HF
NP510A
/28 – GEB-Fepoxy glass
flame retardant
high temperature
MC511FR
/18 – GPGphenolic glassNP504
NP515LS
/8 – GMGmelamine glassNP509
/17 – GSG (see note)silicone glassMC507U
/1 – GMEmelamine glassNP509
/2 – GEEepoxy glassNP500A
/3 – GEBepoxy glass
high temprature
NP572
MC511AF
MC511A
NP511
NP511EM
/16 – FBMphenolic canvasNP310
NP310HT
NP342
/14 – FBGphenolic canvas
electrical grade
NP310E
CFphenolic canvas
electrical post forming grade
NP318
/15 – FBIphenolic linenNP320
/13 – FBEphenolic linen
electrical grade
NP320E
MC320LE
/12 – PBMphenolic paperNP610
/19 – PBM-Pphenolic paper
punching grade
NP611
NP611R
NP660
/20 – PBM-PCphenolic paper
cold punching grade
NP612
NP625
NP664
/11 – PBGphenolic paperNP629
/9 – NPGphenolic nylonNP101

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 TypeDescriptionNorplex-Micarta Grades
/27 – GEE-Fepoxy glass
flame retardant
RT130
RT130M
RT130X
/18 – GPG
(see note)
phenolic glassRT504
RT504F
/8 – GMGmelamine glassRT505
RT505F
/17 – GSGsilicone glassRT507
RT507F
RT507L
/1 – GMEmelamine glassRT509
RT509F
/2 – GEEepoxy glassRT500
RT500F
RT500M
RT500X
RT520M
RT520MH
RT520X
RT571
/2 – GEE High Temperature
(see note)
epoxy glass
high temperature
RT511
RT511H
RT511F
RT511M
/16 – FBMphenolic canvasRT310
RT310H
RT310S
RT342
RT342H
/13 – FBEphenolic linenRTB320
RTB320H
RTB320S
RTB320X
RTB320Z
/12 – PBMphenolic paperRT610
/11 – PBGphenolic paperRT628
RT628H
RT629
/10 – PBE phenolic paperRT630
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 TypeDescriptionNorplex-Micarta Grades
/27 – GEE-Fepoxy glass
flame retardant
RM130
/18 – GPG
(see note)
phenolic glassRM504
/8 – GMGmelamine glassRM505
/2 – GEEepoxy glassRM500A
/2 – GEE High Temperature
(see note)
epoxy glass
high temperature
RM511A
/16 – FBMphenolic canvasRM310
/14 – FBGphenolic canvasRM310E
/15 – FBIphenolic linenRM320
RM320H
/13 – FBEphenolic linen
electrical grade
RM320LE
/11 – PBGphenolic paperRM629
/10 PBE phenolic paperRM630

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.