|
Ductile iron is often an economical alternative to
replace steel fabrications or cast iron with increased strength, improved performance,
reduced cost and better looking parts. The wide range of physical
properties available as-cast or heat treated makes it the ideal material
for a wide variety of applications.
DUCTILE (NODULAR) IRON SPECIFICATIONS
|
Specifying Body (¹)
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Spec No. (²)
|
Use
|
Class or Grade
|
Min.Tensile psi (¹³)
|
Min., Yield psi (14)
|
% Elongation
|
Heat Treatment
|
Other Requirements
|
|
ASTM
|
A536-84
|
Shock resistance at low temperatures
|
60-40-18
|
60,000
|
40,000
|
18
|
May require a full Anneal
|
Chemical composition is subordinate to mechanical
properties; however, the content of any chemical element may be specified
by mutual agreement.
|
|
|
|
Most
commonly used grade.
|
65-45-12
|
65,000
|
45,000
|
12
|
|
|
|
|
|
Suitable
for flame and induction hardening.
|
80-55-06
|
80,000
|
55,000
|
6
|
|
|
|
|
|
For
strength and wear resistance.
|
100-70-03
|
100,000
|
70,000
|
3
|
Quench
Temper
|
|
|
|
|
Maximum
strength and wear resistance.
|
120-90-02
|
120,000
|
90,000
|
2
|
Usually
Quenched
|
|
|
|
|
Special
Applications
|
60-42-10
70-50-05
80-60-03
|
60,000
70,000
80,000
|
42,000
50,000
60,000
|
10
5
3
|
|
|
|
ASTM
|
A395-88
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Pressure
containing parts for use at elevated temperatures.
|
60-40-18
|
60,000
(15)
|
40,000
|
18
|
Ferritized
by annealing
|
|
%TC
|
%Si
|
%P
|
%S
|
%C.E.(19)
|
BHN
|
|
ASME
|
SA395
|
Pressure
containing parts for use at elevated temperatures
|
|
Min.
Max
|
3.0
|
2.50
|
0.08
|
|
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143
187
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© 1997 by Farrar Corporation
For more information call us at (620) 478-2212 or email us at farrar@farrarusa.com.
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