1995-02-01

Development of High Strength and High Toughness Bainitic Steel for Automotive Lower Arm 950211

A high strength and high toughness new bainitic steel has been developed which shows comparable mechanical properties, fatigue property, and machinability to those of quenched and tempered SAE 5140. The heat treatment of the bainitic steel is aging after hot forging in order to improve ratio of 0.2% proof stress and tensile strength (i.e. yield ratio) and to avoid warpage associated with quenching. The new bainitic steel has been applied to the slender and lightweight lower arms for automotive suspension. As a result, the total production costs in the lower arms have been reduced by nearly 15 percent.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% 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

Reduction in Weight of Steel Wheels by Development of 780 MPa-Grade Hot Rolled Steel Sheets

940536

View Details

TECHNICAL PAPER

Effect of Shot-Peening Variables and Residual Stresses on the Fatigue Life of Leaf-Spring Specimens

540262

View Details

TECHNICAL PAPER

Development of Door Beam ERW Tubing Made of 1470N/mm2 Cold Rolled High Strength Steel Sheet

920785

View Details

X