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All Categories > Alloyed Bars and Plates > Aircraft Alloy Steels > Hot Rolled Aircraft Alloy Bars > 4130 Aircraft Alloy Bars > 4130 Aircraft Hot Rolled Condition A (Annealed) - Descaled and Oiled Alloy - Plates > Thickness .250  
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Thickness .250, 4130 Aircraft Hot Rolled Condition A (Annealed) - Descaled and Oiled Alloy - Plates

4130 sheets and plates are made from quality steel melted to meet the rigid standards of the aircraft industry. They are carefully rolled and inspected to be free from laminations and tears. They are also free from pits, blisters, grooves, and seams which cannot be removed without reducing their thickness below the minimum permissible dimensional tolerance limits.

UNS G41300, MIL-S-18729 - AMS 6350

Color Marking: Corner striped Green and Yellow

Stock Widths: 18", 24", 36" 72", 84", 96"
Stock Lengths: 72", 144" 240"

Specifications  · Analysis  · Applications  · Mechanical Properties  · Heat Treating


Estimated Weight per Sq. Ft.

10.21 lb

Estimated Weight per Plate 36"x72"

184 lb

Estimated Weight per Plate 72"x144"

735 lb

Carbon .28/.33
Manganese .40/.60
Phosphorus .025 Max.
Sulphur .025 Max.
Si. .20/.35
Cr. .80/1.10
Mo. .15/.25

Intended for general use where welding and moderate tensile properties are required. Sheet is used where 168,000 psi minimum tensile strength is required in sections up to .125" thick, and where proportionately lower strength is required in heavier thicknesses.

Mechanical Properties
Minimum mechanical properties are as follows: Tensile Strength - 85.000 psi Min.

Heat Treating
Normalize—1600°/1700°F Quench—Oil
Austenitize— 1500°/1600°F Temper—700°/1250°F

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