Castings
Baker Casting Division offers castings in a variety of materials and grades that impact strength, wear, ductility, chemical resistance, vibration dampening, and elasticity for the application. We are experts in achieving the properties required for your parts. Please contact us for assistance to ensure the right balance of material properties for your parts, 1-608-882-5100.
GRAY IRON
Gray Iron is the most common widely foundry casting alloy. The characteristic gray color is due to flakes of graphite contained in the metal. Graphite helps to make the properties of gray iron excellent for machining, outstanding in wear resistance and high-vibration damping.
| SPECIFYING BODY | Spec No. | Grade or class of Material | Tensile Strength (psi) | Brinell Range (BHN) | Typical application |
|---|---|---|---|---|---|
| ASTM SAE ASTM ASME | A48-94A J431 A159-83 | 25 | 25000 | 170-229 | General machinery, municipal and water works, light duty compressors. Machine tools, medium size gear blanks, heavy duty compressors. Dies, crankshafts, high pressure cylinders, heavy duty machine tool parts, large gears, press frames. |
| 30 | 30000 | 187-241 | |||
| 35 | 35000 | 207-255 | |||
| 40 | 40000 | 217-269 |
DUCTILE IRON
Ductile (or nodular) iron is valued for its ductility, elasticity and high strength properties that allow heavier loads. It is easily cast and machined and is as corrosion resistant as gray iron. Production of ductile iron requires more complex metallurgy, the use of special melting stock and special quality control procedures.
| SPECIFYING BODY | Spec No. | Grade or class of Material | Tensile Strength (psi) | Yield Strength (psi) | Elongation (%) | Brinell Range (BHN) | Typical Applications |
|---|---|---|---|---|---|---|---|
| ASTM SAE ASTM ASME | A536-88 J434C A395-88 SA395 | 60-40-18 * D-4018 | 60000 | 40000 | 18 | 170 Max | Pressure castings, such as valve & pump bodies. |
| 65-45-12 D-4512 | 65000 | 45000 | 12 | 156-214 | Machinery castings subject to shock and fatigue loading. | ||
| 80-55-06 D-5506 | 80000 | 55000 | 6 | 187-255 | Automotive and machine components; crankshafts, high strength gears and rollers. | ||
| 100-70-03 D-7003 | 100000 | 70000 | 3 | 245-295 |
AUSTEMPERED DUCTILE IRON
Ductile (or nodular) iron is valued for its enhanced elasticity and high strength properties that serve even heavier loads than plain ductile iron. It is easily cast and machined, and it is as corrosion resistant as gray iron. Production of austempered ductile iron requires more complex metallurgy testing, the use of special melting stock, and strict process controls and quality procedures.
| SPECIFYING BODY | Spec No. | Grade | Tensile Strength (KSI) | Yield Strength (KSI) | Elongation (%) | Brinell Range (BHN) | Typical Applications |
|---|---|---|---|---|---|---|---|
| ASTM | A897-90 | 1 | 130 | 90 | 9 | 269-341 | Typical applications for austempered ductile iron are where high strength is needed, and where excellent wear resistance and fatigue strength are required. |
| 2 | 150 | 110 | 7 | 302-375 | |||
| 3 | 175 | 125 | 4 | 341-444 | |||
| 4 | 200 | 155 | 2 | 388-477 |