Alloy 48 (Pernifer® 48, NILO® 48) Round Bar | Rod

alloy 48 round bar rod controlled expansionEFINEA is a leader in supplying Alloy 48 round bar/rod. We stock Alloy 48 in round bar/rod in an array of diameters starting at 0.062″. Call today and speak with the experienced team at EFINEA


Alloy 48 is a low expansion alloy which is comprised of 48% nominal nickel with the balance of iron. The low coefficient of expansion at 400°C of this alloy makes it an optimal choice for glass-to-metal seals.


At EFINEA our in-house capabilities provide customers with the option of cutting, slitting, shearing, or centerless grinding your order to meet your engineering specifications. We also offer numerous custom programs which cater to the individual supply chain demands of our customers.

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.
MaterialFormSizes InchesSKU Number
Alloy 48Round Bar | Rod0.062”48-NI-RD-062
Alloy 48Round Bar | Rod0.140”48-NI-RD-140
Alloy 48Round Bar | Rod0.250”48-NI-RD-250
Alloy 48Round Bar | Rod0.500”48-NI-RD-500
Alloy 48Round Bar | Rod0.625”48-NI-RD-0.625
Alloy 48Round Bar | Rod0.750”48-NI-RD-0.750
Alloy 48Round Bar | Rod1.125”48-NI-RD-1.125
Alloy 48Round Bar | Rodup to 4.00"48-NI-RD-4.00

For an EFINEA Alloy 48 data sheet, or any other Controlled Expansion Alloy data sheets, please go to the Data Sheets section in our Technical Library.