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4130 Sheet

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Introduction to 4130 Sheet

4130 (UNS G41300) sheet is available in annealed and normalized conditions.  4130 sheet is made from quality steel melted to meet the rigid standards of the aircraft industry.  It is carefully rolled and inspected to be free from laminations and tears. It is also free from pits, blisters, grooves, and seams, which cannot be removed without reducing its thickness below the minimum permissible dimensional tolerance limits.
  • American Specifications: AMS 6350, MIL-S-18729, AMS 6345
  • British Specifications: 708 A 25
  • Applications: Intended for general use where welding and moderate tensile properties are required. Sheet is used where 168 ksi minimum tensile strength is required in sections up to .125" thick, and where proportionately lower strength is required in heavier thickness
  • Size Range: .025" - .190" (.6mm - 5mm)  and available in plate
  • Weldability : yes
  • Heat Treating : Normalize, 1600°F - 1700°F; quench, oil; austenitize, 1500°F - 1600°F; temper, 700°F - 1250°F

Typical Chemical Analysis

C .27-.33%
Mn .40 - .60%
P .025% max
S .025% max
Si .20-.35%
Cr .80-1.10%
Mo .15-.25%

 

Typical Mechanical Properties

Annealed Normalized up to .062" - .187" Normalized over .187" - 1.50"
Tensile Strength (ksi) 85 max 95 min 90 min
Yield Point (ksi) - 75 70
Elongation (% in 2") - 12-Aug 15-18
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