Browse Publications Technical Papers 930263
1993-03-01

Development of a New Light-Weight Suspension Coil Spring 930263

This newly developed helical spring can be used at a stress level up to 1300 MPa. The material is composed of Fe-C-Si-Mn-Ni-Cr-Mo-V alloy. Its strength-toughness balance was greatly superior to that of other spring steels.
To improve the fatigue strength at a higher stress level, decarburization at the surface upon austenitizing was severely controlled, applying induction heating. Then, a special shot peening process, introduced for the first time, was applied to obtain a surface residual stress at the surface of over 1000 MPa. The spring was first applied to a 1992 TOYOTA model car. Plans are to increase the use since the spring material achieves a weight reduction of at least 30 % and, possibly, 35 to 40 %.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 17% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Development of High-Strength Suspension Coil Springs in Which Corrosion Fatigue Strength is Important

2000-01-0616

View Details

TECHNICAL PAPER

Development of High-Strength Suspension Coil Springs in Which Corrosion Fatigue Strength is Important

2000-01-0616

View Details

TECHNICAL PAPER

High Sag Resistance Spring Wire for Automotive Suspension

850059

View Details

X