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| Goldens’ provides customers the highest quality casting in the industry. We pour to exact customer chemistries for gray and ductile iron. We are also pleased to provide austempered ductile iron. |
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| Ductile Irons |
| Ductile iron offers the castability, machinability, and corrosion resistance of gray iron while adding the high strength, ductility, and hardening ability of steel. Our ductile iron castings are well known throughout the industry for high-impact resistance and a high modulus of elasticity and strength, resulting in heavier load capacity with less deflection. |
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| Specifying Body |
Spec. No. |
Use |
Class or Grade |
Min. Tensile PSI |
Min. Yield PSI |
% Elongation |
Heat Treatment |
Other Requirements |
Typical Applications |
| ASTM |
A395-99 |
Maximum shock resistance.
Parts to be used at
sub-zero temperatures |
60-40-18 |
60000 |
40000 |
18 |
Ferritized by
annealing |
Chemical composition is subordinate to mechanicalproperties; however, the content of any chemical element may be specified by mutualagreement. |
Pressure castings such as valve and pump bodies |
| ASTM |
|
Maximum shock resistance.
Parts to be used at sub-zero temperatures |
60-40-18 |
60000 |
40000 |
18 |
May be annealed |
Machinery castings subject to shock and fatigue loading |
| Most widely grade for normal service |
65-45-12 |
65000 |
45000 |
12 |
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Crankshafts,gears and rollers |
| Suitable for flame and induction hardening |
80-55-06 |
80000 |
55000 |
6 |
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High strength gears, automotive and machine components |
| Best combination of strength,wear resistance and response to surface hardening |
100-70-03 |
100000 |
70000 |
3 |
Usually normalized |
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Steering knuckles |
| SAE |
J434c |
For automotive and allied industries |
D-4018 |
BHN of Casting |
170 Max. |
May be annealed |
The Microstructure shall consist of at least 80% spheroidal graphite conforming to Types I and II and be substantially free of primary cementite. |
Disc brake calipers |
| D-4512 |
156-217 |
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Crankshafts |
| D-5506 |
187-255 |
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Gears |
| D-7003 |
241-302s |
May be normalized |
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| Austempered Ductile Irons (ADI) |
| A recent addition to our ductile iron technology, ADI offers the design engineer a remarkable combination of strength, toughness, and wear resistance, with high elongation characteristics. Our ADI can be substituted for steel forgings and castings in many applications, with no loss of casting performance. |
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| Grade |
Tensile* Strength (KSI) |
Yield* Strength (KSI) |
Elongation* |
Impact Energy
(FT-LBS) |
Typical Brinell Hardness |
| 1 |
125 |
80 |
75 |
75 |
269-321 |
| 2 |
150 |
100 |
60 |
60 |
302-363 |
| 3 |
175 |
125 |
45 |
45 |
341-444 |
| 4 |
200 |
155 |
25 |
25 |
388-477 |
| 5 |
230 |
185 |
N/A |
N/A |
444-555 |
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| Gray Irons |
Gray iron has a dense gray structure and offers excellent machinability. Grades 20, 25, 30, 35, and 40 can fill specific requirements for hardness and wear, and heat treatments can yield even higher mechanical properties.
Popular applications for gray iron include diesel and gasoline engine blocks and cylinder liners, and structural machine components where vibration dampening is required. |
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Specifying
Body |
Spec. No. |
Use |
Grade or Class |
Min. Tensile
Strength (PSI) |
Other Requirements |
Typical Applications |
| ASTM |
A126-99 |
Valves, flanges and pipe fittings |
A |
21000 |
.15% S. Max. .75% P Max
1.2"dia. X 12" Transverse Test
is Optional |
Stock fittings and castings not requiring critical tensile test evaluation |
| B |
31000 |
| C |
41000 |
| ASTM |
A48-99 |
Castings intended for general engineering use where strength is a major consideration (Written exception takes precedence) |
20
25 |
20000
25000 |
I) Test bar size shall be related in cooling to the critical section of the casting and so specified.
II) At least two test bars shall be cast and prepared for each casting lot, the lot size being designated.
III) Test bars shall be cast in dry silica sand molds similar to that in which the castings are poured.
IV Tension tests shall be under true axial loading. |
Small or thin section castings, requiring good appearance, high machinability, and close dimensions |
30
35 |
30000
35000 |
General machinery, municipal and water works, light compressors |
40
45 |
40000
45000 |
Machine Tools, medium gear blanks, heavy compressors |
| ASTM SAE |
A159-99
J431 |
Cast in sand molds for the automobile, truck, tractor,
and allied industries |
G1800 |
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Brinell Hardness |
Total Carbon % |
Micro-structure |
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| 187 Max. |
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Ferritic-Pearlitic |
Machinability where a higher strength is not necessary |
| G2500 |
170-229 |
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Ferritic-Pearlitic |
Small cylinder blocks and heads, pistons, clutch plates, pump bodies, gear boxes, housings, light duty brake drums |
| G2500a |
G2500a |
3.40 Min. Mandatory |
"A" Graphite size 2-4 15%max.ferrite |
Brake drums and clutch plates to minimize heath checking |
| G3000 |
187-241 |
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Pearlitic |
Automotive cylinder blocks, heads, liners, flywheels, pistons, medium duty brake drums, and clutch plates |
| G3500 |
207-255 |
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Pearlitic |
Truck cylinder blocks and heads, heavy flywheels and transmission cases, differential castings |
| G3500b |
207-255 |
3.40 Min. Mandatory |
"A" Graphite size 2-4
15% max. ferrite |
Brake drums and clutch plates for heavy service, requiring heat resistance and higher strength |
| G3500c |
207-255 |
3.40 Min. Mandatory |
"A" Graphite size 2-4 15% max. ferrite |
Extra heavy duty service for brake drums |
| G4000 |
217-269 |
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Pearlitic |
Diesel engine castings, liners, cylinders, pistons and heavy engine parts in general |
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