SPRON is a well-balanced material that has better mechanical characteristics (hardness, tensile strength, elongation, relaxation, corrosion resistance, and fatigue limit) than SUS304 and Ni base alloy.
(The data values were measured by SII)

• 2-1, Mechanical Characteristic (Fatigue Characteristics)
• 2-2, Mechanical Characteristics (Spring Relaxation)
• 2-3, Corrosion Resistance
• 2-4, Magnetic Characteristics
• 2-5, High-Temperature Strength

2-1, Mechanical Characteristic (Fatigue Characteristics)

This graph compares the S-N curves obtained during a bend test of SPRON 510 and SPRON 100, which were processed at roll drawing rates of 73% and 60%, respectively, with the S-N curve of SUS304.

2-2, Mechanical Characteristics (Spring Relaxation)

Fatigue due to both statistical and dynamic loads is very small, thus achieving large spring load by a fine spring. High fatigue strength against repetition makes it resistant to fatigue breaking.

2-3, Corrosion Resistance

SPRON has superior corrosion resistance.

2-4, Magnetic Characteristics

SPRON has superior characteristics even at magnetic.

2-5, High-Temperature Strength

SPRON has superior characteristics even at high temperatures.

For details, please contact Seiko Instruments Sales offices.