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ASTM A829 & 4140 Steel Plate

A829-4140 steel plate is a structural-quality, alloy-steel plate that can be supplied in the following conditions: as rolled, annealed, normalized, and normalized and tempered. A829-4140 can be used for a wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades.

The list for uses of A829-4140 is long and includes: strippers, holder blocks, mold bases, ejectors, forming dies, back-up and support tooling, fixtures, stubs, couplings, reamer bodies, tie rods, gears, gear racks, valves, chain links, jigs, spindles, sprockets, tool bodies, tool holders, guides, tracks, ways, slides, wear strips or parts, molds, brake dies, trim dies, bolsters, machinery parts and components.

ASTM A829-4140 Availability

Heat Treated 1/4" – 6" 36" – 96" 96" – 240"
As Rolled 1/4" – 6" 36" – 96" 96" – 240"

ASTM A829 Grade 4140 Chemical Composition

A829/4140 Steel Composition
Carbon 0.36-0.44%
Manganese 0.75-1%
Phosphorus 0.03%
Sulfur 0.04%
Silicon 0.15-0.35%
Nickel ...
Chromium 0.8-1.1%
Molybdenum 0.15-0.25%