SAE AMS5070K-2020 PDF

Full title and description

SAE AMS5070K:2020 — Steel, Bars and Forgings 0.18 - 0.23C (SAE 1022). This aerospace material specification defines composition, mechanical and manufacturing requirements for carbon steel supplied in the form of bars (up to 3.000 in / 76.20 mm), forgings, and forging stock intended for engineering and aerospace applications.

Abstract

AMS5070K establishes supplier and purchaser requirements for SAE 1022 carbon steel (nominal 0.18–0.23% carbon) in bar and forging forms — covering chemical limits, mechanical properties, heat treatment and inspection/acceptance criteria so material is suitable for structural and hardware uses in regulated industries. The K revision was issued in 2020.

General information

• Status: Revised (AMS5070K, superseded by a later revision).
• Publication date: October 19, 2020 (AMS5070K).
• Publisher: SAE International (formerly SAE).
• ICS / categories: Steels / Materials (ICS 49.025.10 — Steels).
• Edition / version: AMS5070K (2020 revision).
• Number of pages: 7 pages.

Scope

This specification covers a carbon steel in the form of bars up through 3.000 inches (76.20 mm) and forgings and forging stock (with applicable limits and delivery conditions defined in the document). It applies to material designated SAE 1022 with a carbon range of approximately 0.18–0.23% C and sets the requirements for composition, heat treatment/tempering, mechanical properties, testing, marking and certification for supply to aerospace and related industries.

Key topics and requirements

• Chemical composition limits (specified carbon range ~0.18–0.23% and other element limits for SAE 1022).
• Permissible product forms: bars (size limits noted), forgings and forging stock; dimensional/tolerance guidance.
• Mechanical property requirements (tensile, yield, elongation) and acceptance criteria.
• Heat treatment and tempering or other required thermal processes to achieve specified properties.
• Inspection and testing requirements (mill tests, mechanical tests, hardness checks, nonconformance handling).
• Surface condition, marking, packaging and certification/delivery documentation expected from suppliers.

Typical use and users

Used by aerospace and defense manufacturers, forging shops, raw material suppliers, quality and procurement engineers, and design engineers specifying material for structural components, shafts, pins and general-purpose forgings where SAE 1022 carbon steel properties are appropriate. Purchasing documents and material certifications reference AMS5070 when buyers require standardized, traceable material characteristics.

Related standards

Related materials and control documents include earlier and later revisions of the same AMS designation (AMS5070J, AMS5070H, etc.) and other AMS material specifications for carbon and low-alloy steels used in aerospace supply chains. AMS5070K has been superseded by AMS5070L (2025 revision) which updates and replaces the K edition.

Keywords

AMS5070, AMS5070K, SAE 1022, carbon steel, steel bars, forgings, forging stock, material specification, aerospace material, 0.18-0.23%C.

FAQ

Q: What is this standard?

A: AMS5070K:2020 is an SAE aerospace material specification for SAE 1022 carbon steel supplied as bars and forgings; it defines composition, mechanical, processing and acceptance requirements.

Q: What does it cover?

A: It covers chemical composition limits for 0.18–0.23% carbon steel, allowable product forms (bars up to 3.000 in / 76.20 mm and forgings/forging stock), mechanical property and heat-treatment requirements, inspection/testing and supplier delivery documentation.

Q: Who typically uses it?

A: Aerospace and defense OEMs and suppliers, forging shops, material purchasers, metallurgists, and quality/inspection teams use this standard when specifying or accepting SAE 1022 material for engineered components.

Q: Is it current or superseded?

A: AMS5070K (2020) was a current revision from 2020 but has subsequently been superseded by AMS5070L, published in 2025; users should reference AMS5070L for the latest requirements.

Q: Is it part of a series?

A: Yes — AMS5070 is part of the AMS family of material specifications (carbon and low-alloy steels) and has a documented revision history (A, B, … up to K and L), so users should confirm the required revision on purchase orders or procurement documents.

Q: What are the key keywords?

A: Key keywords include SAE 1022, carbon steel, AMS5070, bars, forgings, material specification, 0.18-0.23%C, heat treatment, mechanical properties.