ASTM
ASTM International
ASTM D-709, 1997, “Standard Specifications for Laminated Thermosetting Materials.”
This standard matches, fairly closely, the grades that are in NEMA LI-1 and was re-approved in 2001. For the most part, the reference to military standards is out of date, and most of them have been removed from circulation because they are obsolete.
This standard is utilized to obtain information about the test methodology used to measure specific properties. The ASTM is well recognized for its work in standardizing procedures and test methods as well as conditions that should be present in the laboratory or equipment from which the testing is performed. Norplex-Micarta’s lab and testing is done in strict accordance with the ASTM standards as described in this document.
Sheet Grades
| Grade Type | Description | Norplex-Micarta Grades |
|---|---|---|
| Fr-4 | epoxy glass flame retardant | NP130 NP130HF NP510A |
| Fr-5 | epoxy glass flame retardant high temperature | MC511FR |
| G-3 | phenolic glass | NP504 NP515LS |
| G-5 | melamine glass | NP509 |
| G-7 (see note) | silicone glass | MC507U |
| G-9 | melamine glass | NP509 |
| G-10 | epoxy glass | NP500A |
| G-11 | epoxy glass high temprature | NP572 MC511AF MC511A NP511 NP511EM NP519 |
| C | phenolic canvas | NP310 NP310HT NP342 |
| CE | phenolic canvas electrical grade | NP310E |
| CF | phenolic canvas electrical post forming grade | NP318 |
| L | phenolic linen | NP320 |
| LE | phenolic linen electrical grade | NP320E MC320LE |
| X | phenolic paper | NP610 |
| XP | phenolic paper punching grade | NP611 NP611R NP660 |
| XPC | phenolic paper cold punching grade | NP612 NP625 NP664 |
| XX | phenolic paper | NP629 |
| N-1 | phenolic nylon | NP101 |
MC507U does not meet all of the electrical properties of NEMA G-7. Contact us for assistance.
Convolute Wound Tube Grades
| Grade Type | Description | Norplex-Micarta Grades |
|---|---|---|
| Fr-4 | epoxy glass flame retardant | RT130 RT130M RT130X |
| G-3 (see note) | phenolic glass | RT504 RT504F |
| G-5 | melamine glass | RT505 RT505F |
| G-7 | silicone glass | RT507 RT507F RT507L |
| G-9 | melamine glass | RT509 RT509F |
| G-10 | epoxy glass | RT500 RT500F RT500M RT500X RT520M RT520MH RT520X RT571 |
| G-10 High Temperature “G-11” (see note) | epoxy glass high temperature | RT511 RT511H RT511F RT511M |
| C | phenolic canvas | RT310 RT310H RT310S RT342 RT342H |
| LE | phenolic linen | RTB320 RTB320H RTB320S RTB320X RTB320Z |
| X | phenolic paper | RT610 |
| XX | phenolic paper | RT628 RT628H RT629 |
| XXX | phenolic paper | RT630 RT630H RT630S |
Although G-3 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 |
|---|---|---|
| Fr-4 | epoxy glass flame retardant | RM130 |
| G-3 (see note) | phenolic glass | RM504 RT504F |
| G-5 | melamine glass | RM505 RT505F |
| G-10 | epoxy glass | RM500A |
| G-10 High Temperature “G-11” (see note) | epoxy glass high temperature | RM511A |
| C | phenolic canvas | RM310 |
| L | phenolic linen | RM320 RM320H |
| LE | phenolic linen electrical grade | RM320LE |
| XX | phenolic paper | RM629 |
| XXX | phenolic paper | RM630 |
Although G-3 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.