DUCTILE IRON SPECIFICATIONS

Specifying
Body

 Spec.
No.

 Use

Class or
Grade 

 Min. Tensile
PSI

 Min. Yield
PSI

 %
Elongation

  Heat
Treatment

ASTM

A536-84 Maximum shock
resistance. Parts to
be used at subzero
temperatures.

60-40-18

60,000

40,000

18

May be
annealed

Most widely used
grade for normal
service.

60-45-12

65,000

45,000

12

          
Sutable for flame
and induction
hardening.

80-55-06

80,000

55,000

6

          
Best combination
of strength, wear
resistance and re-
sponse to surface
hardening

100-70-03

100,000

70,000

3

Usually
Normalized

Maximum strength
and wear resistance
120-90-02

120,000

90,000

2

Quenched &
Tempered

SAE

J434c

For automotive
and industries
          

BHN of Castings

              

D-4018

170 Max.

May be annealed

D-4512

156-217

                    

D-5506

187-255

                  

D-7003

241-302

May be
normalized

DQ&T

As Specified

Quenched &
Tempered

ASTM
ASME

A395-80
SA395

Pressure con-
taining parts for
use at elevated
temperatures

60-40-18

60,000

40,000

18

Ferritized
by
annealing

ASTM
ASME

A476-82
A476-84
(metric)
SA476

Ductile iron cast-
ings for paper mill
dryer rolls for ser-
vice temperatures
up to 450F (230C)

80-60-03

80,000

60,000

3

To be used in as-
cast condition.
Brinell hardness
shall be minimum
201 BHN.

U.S.
Military

Mil-1-
24137-
(Ships)
amended

Navy shipboard
and other applica-
tions requiring
shock resistance.

Class A

60,000

45,000

15

Shall be
Ferritized by
annealing to
190 max. BHN

Tri-Cast Ltd.®
2128 Killian Road
Akron, Ohio 44312
Phone (330)733-8718
Fax (330)733-8786
sales@tri-cast.com for our sales office