SAE AMS2762C-2018 PDF

Full title and description

SAE AMS2762C — Carburizing Carbon and Low-Alloy Steel Parts. Material specification that defines the procedures, process controls and acceptance criteria for carburizing and related heat treatments used to produce a carburized (case‑hardened) surface on carbon and low‑alloy steel components. This edition is AMS2762C, stabilized March 14, 2018.

Abstract

This specification establishes requirements for carburizing processes (gas, vacuum, low‑pressure and other applicable methods), post‑carburize heat treatments, quenching and tempering, and the inspection/acceptance checks needed to achieve specified case depth, hardness and mechanical properties on carbon and low‑alloy steels. It is intended to ensure repeatable case formation and part performance within the metallurgical limits of the base material.

General information

• Status: Stabilized.
• Publication date: March 14, 2018.
• Publisher: SAE International (issued by the AMS B — Finishes Processes and Fluids Committee).
• ICS / categories: 77.140 — Iron and steel products; heat‑treatable steels (ICS 77.140.10).
• Edition / version: AMS2762C (revision C, stabilized 2018).
• Number of pages: 14.

Scope

The specification covers the procedure for carburizing and related heat treatments of carbon and low‑alloy steel parts to produce case hardening and specified mechanical properties within the capability of each respective steel. It addresses process requirements, applicable steels, and inspection methods to verify case depth, hardness and acceptable metallurgical condition after treatment.

Key topics and requirements

• Definition and classification of carburizing processes and permissible heat‑treat methods for carbon and low‑alloy steels.
• Process control requirements: temperatures, times, and atmosphere/chemistry control to achieve target case depths and carbon gradients.
• Quenching and tempering procedures to achieve required core properties and minimize distortion.
• Acceptance criteria and inspection: case depth measurement, hardness testing, microstructure checks and limits on decarburization/overheating.
• Material suitability and limits — guidance on steels and expected performance within metallurgical capability.
• Documentation, recordkeeping and processing notes required for traceability and quality assurance.
• Safety and handling for hazardous atmospheres and furnace environments associated with carburizing processes.

(Key scope and editorial emphasis summarized from the official AMS2762C specification.)

Typical use and users

Used by heat‑treating shops, OEM and sub‑tier manufacturers, metallurgical engineers, quality and procurement teams in aerospace, automotive, power transmission and other industries where carburized surfaces (gears, pinion shafts, bearings, splines) are specified. The standard is applied to define process requirements on purchase orders, inspection plans and internal shop procedures.

Related standards

Commonly used alongside other AMS heat‑treat and process control standards such as the AMS2759 series (carburizing/nitriding and related heat‑treat procedures) and AMS2750 (pyrometry and furnace temperature control/qualification). These documents together form the set of process, control and acceptance standards typically referenced for controlled carburizing and heat‑treat operations.

Keywords

AMS2762C, SAE, carburizing, case hardening, low‑alloy steel, heat treatment, case depth, quench and temper, pyrometry, process control, inspection, AMS2759, AMS2750.

FAQ

Q: What is this standard?

A: SAE AMS2762C is an SAE material specification that defines the requirements and procedures for carburizing carbon and low‑alloy steel parts to achieve specified case hardening and mechanical properties.

Q: What does it cover?

A: It covers carburizing process definitions, process control parameters, post‑carburize heat treatments (quench/temper), inspection and acceptance criteria (case depth, hardness, metallography) and documentation needed to ensure repeatable, acceptable carburized parts.

Q: Who typically uses it?

A: Heat‑treat shops, OEMs, quality engineers, metallurgists and procurement specialists in industries where carburized surfaces are required (aerospace, automotive, power transmission, heavy equipment).

Q: Is it current or superseded?

A: The current designation is AMS2762C, which was stabilized on March 14, 2018. It supersedes earlier revisions (AMS2762B, AMS2762A and the original AMS2762). The document in this form is listed as stabilized by SAE International.

Q: Is it part of a series?

A: Yes — AMS2762C forms part of the AMS family of material and process specifications administered by SAE (AMS B Finishes Processes and Fluids Committee) and is commonly used together with related AMS documents covering carburizing/nitriding procedures and pyrometry (for example, the AMS2759 series and AMS2750).

Q: What are the key keywords?

A: Carburizing, case hardening, AMS2762C, SAE, heat treatment, low‑alloy steel, case depth, hardness, quench and temper, process control.