t1305 - Table 13.5 Designations, Minimum Mechanical...

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Unformatted text preview: Table 13.5 Designations, Minimum Mechanical Properties, Approximate Compositions, and Typical Applications for Various Gray, Nodular, and Malleable Cast Irons Mechanical Properties Tensile Yield Ductility Strength Strength [%EL in 50 [MPa (ksi)] [MPa (ksi)] mm (2 in.)] Gray Iron 124 (18) — — 412 Grade SAE G1800 UNS Number F10004 Composition (wt%)a 3.40–3.7 C, 2.55 Si, 0.7 Mn 3.2–3.5 C, 2.20 Si, 0.8 Mn 3.0–3.3 C, 2.0 Si, 0.8 Mn Matrix Structure Ferrite Pearlite Typical Applications Miscellaneous soft iron castings in which strength is not a primary consideration Small cylinder blocks, cylinder heads, pistons, clutch plates, transmission cases Diesel engine castings, liners, cylinders, and pistons SAE G2500 F10005 Ferrite Pearlite 173 (25) — — SAE G4000 F10008 Pearlite 276 (40) — — Ductile (Nodular) Iron ASTM A536 60-40-18 F32800 3.5–3.8 C, 2.0–2.8 Si, 0.05 Mg, 0.20 Ni, 0.10 Mo Ferrite 414 (60) 276 (40) 18 Pressure-containing parts such as valve and pump bodies High-strength gears and machine components Pinions, gears, rollers, slides 100-70-03 120-90-02 F34800 F36200 Pearlite Tempered martensite Ferrite 689 (100) 827 (120) 483 (70) 621 (90) 3 2 Malleable Iron 32510 F22200 2.3–2.7 C, 1.0–1.75 Si, 0.55 Mn 2.4–2.7 C, 1.25–1.55 Si, 0.55 Mn 345 (50) 224 (32) 10 General engineering service at normal and elevated temperatures Ferrite Pearlite 448 (65) 310 (45) 6 45006 — The balance of the composition is iron. Source: Adapted from ASM Handbook, Vol. 1, Properties and Selection: Irons, Steels, and High-Performance Alloys, 1990. Reprinted by permission of ASM International, Materials Park, OH. a ...
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