4140 Plate

AISI 4140 PLATE
Typical Analysis
C Mn P S Si Cr Mo
.40 .85 .020 .025 .25 .90 .20
Characteristics
  • The combined effect of the chromium and molybdenum contents ensures excellent hardenability with uniform properties. In the heat treated condition, plate exhibits strong abrasion and wear resistance as well as good impact and fatigue properties
Typical Applications
  • Recommended for use in high stress, abrasion/wear resistant applications such as gears, oil tools and machine tool components
Condition
  • As rolled surface finish, annealed alloy steel plate
Plate Dimensions
  • Available in gauge/width combinations from ¼" x 96" to 4 ¼" x 72"

4140 TG&P Alloy

Alloy Cold Finished AISI 4140 PRECISION GROUND SHAFTING (UNS G 41400)
  • Turned, ground and polished shafting
  • Straightness tolerance of 1 1/16" max in any five feet (5')
Typical Analysis
4140
C Mn P S Si Cr Mo
.40 .85 .020 .025 .25 .90 .20
E-4140
C Mn P S Si Cr Mo
.42 .83 .006 .005 .28 1.02 .22
Characteristics
  • This high strength precision ground shafting is produced to exacting OD tolerances. The product offers the highest degree of overall accuracy and concentricity with a seam free surface finish of RMS 25 max. Precision ground shafting 4140 is available in both imperial and metric sizes
Typical Applications
  • All forms of close tolerance shafting: camshafts, drive shafts, mill shafts, motor shafts, pump shafts, bolts, pins, studs, etc
Mechanical Properties
  • For 215/16" or 74.9 mm diameter bar and smaller,
  • ASTM A193, Grade B7 applies.
  • For 3" or 76.2 mm diameter and greater, ASTM A434,
  • Class BD or BC applies.
Alloy Cold Finished AISI 4140 PRECISION GROUND SHAFTING (UNS G 41400) Size Tolerances
  • all tolerances are MINUS
1 1/2" dia. (38.1 mm) and under Minus 0.001” (0.03 mm)
Over 1 1/2" dia. to 2 1/2" dia (63.5 mm) Minus 0.0015” (0.04 mm)
2 1/2" dia. to 3" dia (76.2 mm) Minus 0.002” (0.05 mm)
Over 3" dia. to 4" dia (101.6 mm) Minus 0.003” (0.08 mm)
Over 4" dia. to 6" dia (152.4" mm) Minus 0.004” (0.10 mm)
Over 6" dia. to 7" dia (177.8 mm)> Minus 0.004” (0.10 mm)

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