The performance, material selection and use of metal bellows are as follows:
Brass bellows
H80 H -60 -60 ~ +100 C has lower elasticity, greater hysteresis and greater aftereffect, and better solderability. It can be used as a measuring element in non corrosive media and instruments with low accuracy.
Tin bronze bellows
QSn6.5-0.1 *-60 ~+100 (?) has good elasticity, strength and corrosion resistance, less hysteresis and elastic aftereffect, better brazing performance, and is widely used as measuring elements.
Beryllium bronze bellows
QBe2 P-60 ~+150 (?) has little hysteresis and elastic aftereffect, high elastic stability, corrosion resistance and no magnetism. It is mostly used in high-precision measuring instruments.
stainless steel bellows
1Cr18Ni9Ti G -194 C ~ +400 C has high bending fatigue strength and corrosion resistance, and good weldability. It can be used as measuring, sealing, connecting and compensating elements in corrosive medium.
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