Alloy 42 (Pernifer® 40, NILO® 42, Glass Sealing 42®) Plate | Sheet

alloy 42 sheet controlled expansion alloy

EFINEA is a leading supplier of low expansion nickel-iron alloys.  We stock Alloy 42 plate and sheet in an array of thicknesses and tempers to meet the needs of our customers.   Our Alloy 42 plate is stocked in a range of thicknesses from 0.1875” to 0.410”.  Our Alloy 42 sheet dimensions start at 0.020”.  Contact our professional sales team to request a quote or to place your order.


The  EFINEA in-house team of experienced cutters provide our customers with the option to have your plate or sheet order shipped to your exact size requirements.  All Alloy 42 orders ship with mill test certification and conforms to ASTM F30 standards.


Share your supply chain challenges with the EFINEA sales team.  We partner with our customers to provide tailor-made solutions to your alloy supply chain needs.

Below please find a sampling of our standard stock items. Our inventory fluctuates based on market demands. If you do not see the size or form you require, we ask that you call us for current product availability.
MaterialFormSize InchesSKU Number
Alloy 42Plate0.1875"42NI-PL-1875
Alloy 42Plate0.281"42NI-PL-281
Alloy 42Plate0.410"42NI-PL-410
MaterialFormAlloy 42 Sheet ThicknessSKU Number
Alloy 42Sheet0.020”42NI-SH-020
Alloy 42Sheet0.030”42NI-SH-030
Alloy 42Sheet0.040”42NI-SH-040
Alloy 42Sheet0.050”42NI-SH-050
Alloy 42Sheet0.060”42NI-SH-060
Alloy 42Sheet0.085”42NI-SH-085
Alloy 42Sheet0.100”42NI-SH-100
Alloy 42Sheet0.125”42NI-SH-125

For an EFINEA Alloy 42 data sheet, or any other Controlled Expansion Alloy data sheets, please go to the Data Sheets section in our Technical Library.