Need Bronze Now? 1-888-DURA-BAR

Dura Bar Metal Services
100-70-03 Ductile Iron offered by Dura-Bar Metal Services #

Ductile Iron 100-70-03

Dura-Bar 100-70-03 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 100-70-03.

Microstructure

Depiction of Dura-Bar microstructure

CENTER AREA
100x, etched in 5% Nitol Center view of Dura-Bar 100-70-03 microstructure

EDGE AREA
100x, etched in 5% Nitol Edge view of Dura-Bar 100-70-03 microstructure

The microstructure consists of Type I & Type II nodular graphite as defined in ASTM A247. The matrix is highly pearlite with small amounts of ferrite. The "rim" will have a higher nodule count and contain slightly higher ferrite concentration when compared to the center. Chill carbides will be less than 5% in any field at 100x and will be well dispersed.

Chemical Composition of Pearlitic Ductile Iron
C% Si% Mn% S% P%
3.50-3.90. 2.25-3.00 0.15-0.35 0.025 max 0.05 max

Typical Uses

Automotive:
Gears
Fluid Power:
Cylinder blocks, Gerotors, Glands, Manifolds, Pistons, Rotors, Valves
Machinery:
Barrell Rollers, Bushings, Chain Sheave Rollers, Chuck Bodies, Die Blocks, Flywheels, Gear Racks, Gears, Housings, Pile Drivers, Pulleys, Rams, Rotary Tables
Miscellaneous:
Port Plate
Power Transmission:
Gears, Pulleys
Pump and Compressor:
Gears, Housings, Liners, Pistons, Rotors
Steel Mill:
Guide Rolls, Pinch Rolls, Runout Table Rolls
Transportation:
Camshafts, Carriers, Gears, Pulleys, Rail Spacers

Grade Properties Pearlitic Ductile Iron

Tensile Strength (psi) 100,000
Yield Strength (psi) 70,000
Elongation (%) 3
Machinabilty Rating (1212=100%) 75%
Hardness (BHN) (AVG) 279
Relative Wear Resistance Excellent
Heat-Treat Response (Rc) 55-60
Machining
Operation
Machining
Speed (sfm)
Feed (ipr) Depth of
Cut (inches)
Rough Turn (OD & ID) 450 - 750 0.008 - 0.022 0.0100 - 0.175
Finish Turn (OD & ID) 800 - 1,000 0.006 - 0.010 0.010 - 0.050
Drilling/Milling (indexable) 400 - 600 0.004 - 0.012  
Drilling/Milling
(solid carbide)
250 - 350 0.003 - 0.012  
Grooving (OD & ID) 400 - 800 0.002 - 0.007