Continuous Cast Iron

Continuously Cast Iron 65-45-12 Ductile Iron

Typical Analysis

C	MN	P	S	Si
3.6- 3.9	0.1- 0.4	.10 Max	.015 Max	2.3-2.8

*numbers are in percentage*

Characteristics

Ferritic, as-cast, 65-45-12, ductile iron will be the softest of the regular grades of ductile iron. The matrix structure will contain some pearlite and less than 5% well dispersed carbides. In bars over 2 in. (51 mm) diameter the pearlite content will range up to 25%. This microstructure permits high speed machining with good surface finishes.

Typical Applications

Hydraulic-pump rotors, gear blanks, rams, machine-tool gibs, foundry patterns plates, ways, collets, valve bodies, manifolds, compressor valves, hydraulic cylinder bushings, rod bushings, etc.

Typical Heat Treatment

Because of its ferritic structure, this material is not intended for hardening

Mechanical Properties

As-cast 65-45-12, ductile iron has approximately the same tensile and yield strengths as hot rolled SAE 1035 steel in the as-rolled condition. Elongations in as-cast, 65-45-12 will be slightly lower than SAE 1035 steel in the as-rolled condition. This material is manufactured to produce material similar to ASTM specification A536.
Tensile tests are taken from the actual as-cast bar.
Tensile Strength (min)* – 65,000 psi
Yield Strength (min)* – 45,000psi
Elongation (min)* – 12%
* Determined as prescribed by ASTM standards.

Continuously Cast Iron 65-45-12 Ductile Iron	Hardness Hardness properties listed are minimum, maximum across the bar. Hardness for shapes other than rounds will be supplied on request
Bar Dia – inches	Bar Dia – centimeters	BHN min to max
1 – 2	2.5 – 5.1	152 to 212
2 – 3	5.1 – 7.6	152 to 201
3 – 6	7.6 – 15.2	143 to 201
6 – 10	15.2 – 25.4	131 to 201
10 – 19	25.4 – 48.2	131 to 201

Continuously Cast Iron G2 – Highly Pearlitic Gray Iron
Characteristics	This specification covers a dense fine-grained gray iron produced by the continuous cast process. The “highly pearlitic” structure is developed by alloy additions to the electrically melted base iron. This material is suitable for applications where higher strength irons requiring good wear resistance and response to heat treatment are required.
Typical Applications	Hydraulic-pump rotors, gear blanks, rams, machine-tool gibs, foundry patterns plates, ways, collets, etc.
Typical Heat Treatment	This iron can be hardened by fast methods, such as flame and induction hardening, in addition to conventional quench and temper methods. Gray Iron can be oil quench hardened from 1575℉ (85℃) to a Rockwell “C” 50 minimum on the outside diameter of the bar. The inside diameter hardness will be less than Rockwell “C” 50. Lower quench hardnesses on the inside diameters are a result of larger graphite flakes and not a loss of matrix hardness.
Mechanical Properties	Machining characteristics of this alloy are excellent. Although the hardness of the material is generally higher than found in static castings, the close grain structure, its freedom from inclusions, hard spots and porosity permit superior machining speeds

Continuously Cast Iron G2 – Highly Pearlitic Gray Iron	Mechanical Properties – Hardness Hardness properties listed are minimum, maximum across the bar. Hardness for shapes other than rounds will be supplied on request.
Bar Dia – inches	Bar Dia – centimeters	BHN min to max
¾ – 1 1/2	1.9 – 3.8	207 to 285
1 ½ – 3	3.8 – 7.6	207 to 277
1 ½ – 3	7.6 – 15.2	197 to 269
6 – 10	15.2 – 25.4	183 to 269
10 – 19	25.4 – 48.2	183 to 269

Continuously Cast Iron 80-55-06 Partially Pearlite Ductile Iron

Characteristics

Grade 80-55-06 ductile iron will contain nodular graphite in a matrix of ferrite and pearlite. The pearlite/ferrite structure provides higher wear resistance and strength when compared to a ferritic grade of ductile iron. This material will be readily machinable with good surface finishes. Tensile and yield strengths will be similar to AISI 1040 steel in the as-rolled condition. This specification is similar to ASTM A536 grade 80-55-06.

Typical Applications

Fluid Power:	Cylinder Blocks, Gerotors, Manifolds, Pistons, Glands, Rotors, Valve Bodies.
Machinery:	Bushings, Chain Sheave Rollers, Chuck Bodies, Die Blocks, Gears, Gear Racks, Pulleys, Press Rams, Rotary Tables, Tie Road Nuts, Ways, Barrel Rollers (cement truck), Flywheels, Pile Drivers, Pulleys, Rams.
Transportation:	Pulleys, Gears, Rail Spacers.
Pump and Compressor:	Gears, Housings, Liners, Pistons, Rotary Screws.
Steel Mill:	Guide Rolls, Pinch Rolls, Runout Table Rolls.
Miscellaneous:	Disamatic Pouring Rails, Dies, Pattern Plates, Core Boxes, Grinding Rolls, Mill Liners.

Typical Heat Treatment

Grade 80-55-06 can be oil quench hardened from 1600℉ (885℃) to a Rockwell C 50 minimum on the outside of the bar. The inside diameter hardness will be less than Rockwell C50. Lower quench hardnesses on the inside diameters are a result of larger graphite nodules and not a loss of matrix hardness. Typical Jominy end quench test data are shown in the section on Heat Treating.

Mechanical Properties

The tensile strength is determined from a longitudinal test specimen taken from mid-radius of the as-cast bar.
Tensile strength (min) – 80,000psi
Yield strength (min) – 55,000psi
Elongation (min) – 6%
In bars under 1.5″ diameter elongation will be 4-6%.

Continuously Cast Iron 100-70-02 Pearlitic Ductile Iron

Grade 100-70-02 is a non-inventoried item. A wide variety of sizes and shapes is available by special order

Characteristics

Grade 100-70-02 ductile iron contains nodular graphite in a matrix of pearlite with small amounts of ferrite. The pearlitic structure maximizes strength and wear characteristics in a non-alloyed as-cast ductile iron. This specification is similar to ASTM A536 grade 100-70-03.

Typical Applications

Fluid Power:	Cylinder Blocks, Gerotors, Manifolds, Pistons, Glands, Rotors, Valve.
Machinery:	Bushings, Chain Sheave Rollers, Chuck Bodies, Die Blocks, Gears, Gear Racks, Pulleys, Press Rams, Rotary Tables, Tie Road Nuts, Ways, Barrel Rollers (cement truck), Flywheels, Pile Drivers, Pulleys, Rams.(also see fluid power).
Transportation:	Pulleys, Gears, Rail Spacers, Hubs, Carriers, Camshafts.
Pump and Compressor:	Gears, Housings, Liners, Pistons.
Steel Mill:	Guide Rolls, Pinch Rolls, Runout Table Rolls.
Miscellaneous:	Disamatic Pouring Rails, Dies.

Typical Heat Treatment

Grade 80-55-06 can be oil quench hardened from 1600℉ (885℃) to a minimum hardness of Rockwell C 50 on the outside of the bar. The inside diameter hardness will be less than Rockwell C 50. Lower quench hardnesses on the inside diameters are a result of larger graphite nodules and not a loss of matrix hardness. Typical Jominy end quench test data for 80-55-06 ductile iron are shown in the section on Heat Treating. Similar data applies to 100-70-02.

Mechanical Properties

The tensile strength is determined from a longitudinal test specimen taken from mid-radius of the as-cast bar.
Tensile strength (min) – 100,000psi
Yield strength (min) – 70,000psi
Elongation (min) – 2%

Continuously Cast Iron 100-70-02 Pearlitic Ductile Iron	Mechanical Properties – Hardness Hardness properties for various diameters are shown in the table below. Hardness properties listed are minimum, maximum across the bar. For rectangles, squares and shapes, the hardness properties will depend on minimum and maximum section thickness and will be supplied on request.
Bar Dia – inches	Bar Dia – centimeters	BHN min to max
01.000 – 20.000	25 – 508	241 to 329

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