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SAE AMS-S-18729
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SAE AMS-S-18729 Revision A, January 1, 2002
Steel Plate, Sheet, and Strip, Alloy 4130, Aircraft Quality
Description / Abstract:
The steel is intended for applications requiring moderate
mechanical properties and in which welding may be required. In
thickness of 0.187 inch and less, a minimum tensile strength of
180,000 psi can be obtained by proper heat treatment, and lower
strengths in greater thicknesses. The hardenability of the steel
does not assure through-hardening to a uniform structure in sizes
greater than 0.500 inch in thickness or diameter of equivalent
round.
Condition (A): More time in the annealing furnace is required to attain condition (A) than condition (MA). Condition (A) material possesses more desirable forming properties.
Condition (MA): The modified annealed condition is intended to provide a more favorable base for quench-and-temper heat treatment than condition (A).
Condition (A): More time in the annealing furnace is required to attain condition (A) than condition (MA). Condition (A) material possesses more desirable forming properties.
Condition (MA): The modified annealed condition is intended to provide a more favorable base for quench-and-temper heat treatment than condition (A).
SAE AMS-S-18729 Revision A, January 1, 2002
Steel Plate, Sheet, and Strip, Alloy 4130, Aircraft Quality