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4340 Steel Plate

4340 steel plates are typically produced through hot rolling or cold rolling processes and are available in various thicknesses and dimensions. The plates are often supplied in a normalized or tempered condition to enhance their strength and toughness. 4340 steel plates are widely used in industries that require high-strength and durable materials. They find applications in aerospace, automotive, oil and gas, machinery, and other engineering sectors. Some common uses of 4340 steel plates include manufacturing of gears, shafts, crankshafts, connecting rods, tooling components, and structural parts subjected to high stress and impact loads.
Specifications Of  4340 Steel Plate
Specification SAE J404, ASTM A829 / ASTM A6, AMS 2252/ 6359/ 2301
Grade AISI 4340/ EN24 
Value Added Services
  • Flame Cutting
  • Metal Processing
  • Annealing
  • Saw Cutting
  • Shearing
  • Plasma Cutting
  • Grinding
  • Surface Grinding
 
Thickness chart of 4340 Plate
Dimension thickness is in inches
0.025" 4" 0.75"
0.032" 3.5" 0.875"
0.036" 0.109" 1"
0.04" 0.125" 1.125"
0.05" 0.16" 1.25"
0.063" 0.19" 1.5"
0.071" 0.25" 1.75"
0.08" 0.3125" 2"
0.09" 0.375" 2.5"
0.095" 0.5" 3"
0.1" 0.625"  
 
Commonly Used Types Of 4340 Steel Plates

AMS 6359 Plate

4340 Steel Plate

EN24 Aq Steel Plate

4340 Steel Sheet

36CrNiMo4 Plate

DIN 1.6511 Plate
 
Chemical Composition of 4340 Steel Sheet
Grade Si Cu Mo C Mn P S Ni Cr

4340

0.15/0.35 0.70/0.90 0.20/0.30 0.38/0.43 0.65/0.85 0.025 max. 0.025 max. 1.65/2.00 0.35 max.
 
EQUIVALENT GRADES OF 4340 Steel Sheet
AISI Werkstoff BS 970 1991 BS 970 1955 EN
4340 1.6565 817M40 EN24
 
4340 Material Tolerance
Thick, inch Tolerance Range, Inch.
4340 Annealed Up - 0.5, excl.  +0.03 Inch, -0.01 Inch
4340 Annealed 0.5 - 0.625, excl. +0.03 Inch, -0.01 Inch
4340 Annealed 0.625 - 0.75, excl. +0.03 Inch, -0.01 Inch
4340 Annealed 0.75 - 1, excl. +0.03 Inch, -0.01 Inch
4340 Annealed 1 - 2, excl. +0.06 Inch, -0.01 Inch
4340 Annealed 2 - 3, excl. +0.09 Inch, -0.01 Inch
4340 Annealed 3 - 4, excl. +0.11 Inch, -0.01 Inch
4340 Annealed 4 - 6, excl.  +0.15 Inch, -0.01 Inch
4340 Annealed 6 - 10, excl.  +0.24 Inch, -0.01 Inch
 
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