Technical Data Sheet
Alloy 48 (Nilo 48) is a nickel-iron controlled-expansion alloy containing 48% nickel. Alloy 48 (Nilo 48 coefficient of thermal expansion matches that of soft lead and soda lime glasses therefore Alloy 48\’s main use is for glass to metal seals in soft lead or soda lime type glasses. Alloy 48 is also used for thermostats in industrial applications up to 450°C (840°F).
| Chemical Composition Limits | |||||||||
| Weight % | Ni | Cr | Mn | Si | C | Al | P | S | Fe |
| Alloy 48 | 48 | 0.25 max | 0.80 max | 0.30 max | 0.05 max | 0.10 max | 0.025 max | 0.025 max | Bal |
Typical Mechanical Properties
| Material | Ultimate Tensile Strength | Yield Strength 0.2 % | Elongation (%) | ||
| psi | MPa | psi | MPa | ||
| Alloy 48 | 75,000 | 520 | 38,000 | 260 | 43 |
| Coefficient of Expansion – Alloy 48 (Nilo 48) | |
| 68-212°F, 10ˉ6 in/in °F | 4.7 |
| 20-100°C, μ m/m °C | 8.5 |
| 68-752 °F, 10ˉ6 in/in °F | 4.6 / 5.2 |
| 20-400°C, μ m/m °C | 8.3 / 9.3 |
Availability
Alloy 48 is available in Round Bar, Tube, Sheet, Coil, Strip and Wire. For all stock availability contact Sales.
Alloy 48 Tube is available the following size ranges.
Outside Diameter – 0.25mm (0.010") up to 16.00mm (0.625")
Wall – 0.05mm (0.002") up to 1.00mm (0.040")
Straight Lengths – 1.00mm (0.040") up to 5000.00mm (197")
Coils Lengths – 5 Metres to 15 Metres
Standard Tolerance- OD &ID +/-0.03mm (0.0012")
Wall +/- 10%
Tight Tolerance – OD&ID +/- 0.015mm (0.0006")
Wall +/-3%
Some thin wall tubes up to 25.40 mm (1.000") can be supplied.
| Alloy 48 Strip in Coil | Alloy 48 Sheet | Alloy 48 Plate |
| 0.010" | 0.010" | 0.200" |
| 0.015" | 0.015" | 0.235" |
| 0.020" | 0.020" | 0.250" |
| 0.040" | 0.070" | 0.375" |
| 0.060" | 0.080" | 0.450" |
| 0.135" | 0.500" | |
| 0.188" | ||
| many other sizes available |
Specifications
UNS K94800
ASTM F30 Sheet, Strip, Rod, Bar, Tubing and Wire
DIN 17745
Werkstoff Nr.1.3922
Werkstoff Nr. 1.3926
Werkstoff Nr. 1.3927
AFNOR NF A54-301
Tradename Nilo Alloy 48
SUPRA 50