42 Alloy


Application & Characteristics
Glass-to-metal sealing.

Chemical Composition (%)
Ni, Co & Cu 40.25-41.75, ; C 0.05 max.; Mn 1.00 max; Si 0.10-0.40; Balance Fe

Physical Properties
Melting Range (°F)	2606
Density (lbs/in³) 68F	0.293
Thermal Expansion (in/in °Fx10 to the power of -6)	3.8 (0 – 200F)
Electrical Resistivity (ohms/cir mil/ft.) 68F	421

Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)	80
Yield Strength (psi x 10³)	35
Elongation ( % )	35
Hardness	B90(Rockwell)

Mechanical Properties – Temper = H/2
Tensile Strength (psi x 10³)	100
Yield Strength (psi x 10³)	55
Elongation ( % )	20
Hardness	B90(Rockwell)

Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)	130
Yield Strength (psi x 10³)	85
Elongation ( % )	6
Hardness	C25(Rockwell)