Browse Publications Technical Papers 2005-01-1688
2005-04-11

Development of a Heat Resistant Cast Iron Alloy for Engine Exhaust Manifolds 2005-01-1688

A new heat-resistant cast iron alloy has been developed for the exhaust manifolds of new passenger-car diesel engines. This development occurred because operating demands on exhaust manifolds have increased significantly over the past decade. These demands are due to higher exhaust gas temperatures resulting from tighter emission requirements, improved fuel efficiencies, and designs for higher specific engine power. These factors have led to much higher elevated temperature strength and oxidation resistance requirements on exhaust manifold alloys. Additionally, thermal fatigue that occurs directly as a result of thermal expansions and mechanical constraint has become an increasingly important issue.
The research detailed in this paper focused on the optimization of the chemical composition of a Si-Mo ductile iron to improve the mechanical and physical properties for use in an engine exhaust manifold. Low cycle fatigue and high temperature oxidation properties were evaluated and found to yield an improved alloy for exhaust manifold applications.

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

Duplex Surface Treatment of Pearlitic Ductile Iron for Diesel Crankshaft

2005-01-1693

View Details

TECHNICAL PAPER

Dissimilar Welding of Si-Mo Ductile Iron Exhaust Manifold Welded to Stainless Steel Catalytic Converter using NI-ROD Filler Metal 44HT

2000-01-0763

View Details

TECHNICAL PAPER

Titanium - A Futuristic Material for Vehicle Exhaust System and Powertrain Components

2014-28-0043

View Details

X