Ams 2759 2 [top] -

Compliance with AMS 2759/2 isn't just about following a recipe; it’s about proving the results. Key requirements include:

This "slash specification" works in tandem with the general AMS 2759 requirements, adding the rigorous controls needed for ultra-high-strength components. The Scope: Who is AMS 2759/2 For?

| Specification | Strength Level | Typical Applications | |---------------|----------------|------------------------| | AMS 2759/1 | Low to medium (≤ 200 ksi) | General structural parts | | | ≥ 220 ksi | Landing gear, high-load fasteners | | AMS 2759/3 | Carburizing steels | Gears, bearings | | AMS 2759/4 | Stainless steels | Corrosion-resistant parts | | AMS 2759/5 | Martensitic stainless | High-strength + corrosion resistance | ams 2759 2

The specification mandates a sequence of controlled operations:

AMS 2759-2 is titled “Heat Treatment of Steel Parts, Through Hardening.” Its primary function is to establish the standard process requirements for heat-treating carbon and low-alloy steel parts to achieve high strength and hardness through cross-sectional penetration. Unlike surface hardening methods (such as carburizing or nitriding, which are covered under other AMS 2759 subsections), through hardening alters the core properties of the material. Compliance with AMS 2759/2 isn't just about following

This is perhaps the most critical phase for achieving through-hardening. AMS 2759-2 specifies acceptable quench media—usually oil or polymer. The specification details the temperature limits for the quench bath and often the agitation requirements. Rapid cooling is necessary to "trap" the hard martensitic structure, but the specification acts as a brake against the introduction of thermal shock (cracking). It dictates that the transfer time from furnace to quench tank must be minimized to prevent premature transformation.

is a specialized aerospace material specification published by SAE International. It establishes the engineering requirements for the heat treatment of low-alloy steel parts that must achieve a minimum tensile strength of 220 ksi (approximately 1517 MPa) or higher. This specification is critical for manufacturing highly stressed aerospace components such as landing gear, actuation systems, fasteners, and structural fittings. | Specification | Strength Level | Typical Applications

Excess carbon uptake, which can make the surface too brittle. 4. Quality Assurance and Testing