ASTM B194-22 PDF

Full title and description

ASTM B194-22 — Standard Specification for Copper‑Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar. This specification defines chemical, metallurgical, mechanical, and dimensional requirements for wrought copper‑beryllium (Cu‑Be) plate, sheet, strip and rolled bar, including accepted alloy designations, temper/heat‑treatment conditions, and required tests.

Abstract

ASTM B194-22 establishes requirements for copper‑beryllium alloys (UNS C17000 and C17200) supplied as plate, sheet, strip, or rolled bar. The standard covers permitted alloy compositions, processing conditions (solution heat treatment, cold working, precipitation heat treatment, and mill‑hardening), sampling and test methods, and minimum conformance criteria for tensile properties, hardness, grain size, and bend performance. Inch‑pound units are primary in the document.

General information

• Status: Active
• Publication date: July 1, 2022
• Publisher: ASTM International
• ICS / categories: 77.150.30 — Copper products
• Edition / version: ASTM B194-22 (2022)
• Number of pages: 11

Scope

This specification applies to copper‑beryllium alloy plate, sheet, strip, and rolled bar. It specifies two principal alloys by UNS number (C17000 and C17200) and their nominal beryllium contents, defines acceptable product forms and processing conditions, and requires verification by chemical analysis, metallography (grain size/ grain count), mechanical testing (tensile, yield, elongation), bend testing, and Rockwell hardness. Unless the purchase order states otherwise, C17200 is the default alloy furnished.

Key topics and requirements

• Alloy designations and composition: UNS C17000 (approx. 1.7% Be) and UNS C17200 (approx. 1.9% Be) as the specified alloys.
• Permitted product forms: plate, sheet, strip, and rolled bar with specified edge and dimensional tolerances.
• Processing/temper conditions covered: solution heat treatment, solution heat treatment plus cold working, precipitation (age) heat treatment, and mill‑hardening.
• Mechanical property requirements: tensile strength, yield strength, and elongation with specified test methods and acceptance criteria per temper.
• Hardness testing: Rockwell hardness requirements and procedures (Rockwell test method referenced).
• Metallurgical controls: grain‑size / grain‑count criteria and sampling for metallographic examination.
• Chemical analysis and sampling: requirements and referenced analytical practices for determining beryllium and other elements.
• Referenced test practices and standards for tensile, hardness, grain size, sampling and numbering (UNS), and significant‑digit practice.
• Safety note: handling/testing of beryllium‑bearing materials requires attention to health and regulatory controls due to beryllium toxicity.

Typical use and users

Used by material engineers, mill and product specification writers, procurement and quality personnel, and manufacturers of wrought copper‑beryllium products. Typical applications include spring and contact components, precision electrical connectors, aerospace and defense components, tooling, and other applications requiring a combination of high strength, corrosion resistance, conductivity and good spring properties. Also used by testing laboratories for conformance verification.

Related standards

Companion and referenced documents commonly used with B194 include ASTM B248 (General requirements for wrought copper and copper‑alloy plate, sheet, strip, and rolled bar), ASTM E8/E8M (tension testing), ASTM E18 (Rockwell hardness), ASTM E112 (grain size), ASTM E255 (sampling copper and copper alloys), ASTM E527 (UNS numbering), and ASTM B601 (temper designations for copper alloys). The 2022 edition of B194 supersedes the prior B194-15 edition.

Keywords

copper‑beryllium, Cu‑Be, C17000, C17200, plate, sheet, strip, rolled bar, precipitation hardening, solution heat treatment, mill hardening, tensile properties, Rockwell hardness, grain size, ASTM B194-22

FAQ

Q: What is this standard?

A: ASTM B194-22 is the ASTM International standard specification that defines requirements for wrought copper‑beryllium plate, sheet, strip and rolled bar including composition, processing conditions, mechanical and metallurgical tests, and acceptance criteria.

Q: What does it cover?

A: It covers two principal Cu‑Be alloys (UNS C17000 and C17200), product forms (plate, sheet, strip, rolled bar), heat‑treatment/temper conditions, chemical and metallurgical requirements, mechanical testing (tensile, bend, elongation) and Rockwell hardness, plus sampling and referenced test methods.

Q: Who typically uses it?

A: Material engineers, manufacturers, quality/control labs, purchasers, and designers who specify or verify wrought copper‑beryllium materials for electrical, spring, aerospace, defense, and precision mechanical applications.

Q: Is it current or superseded?

A: The 2022 edition (ASTM B194-22) is the current active edition and it supersedes the previous B194-15 edition.

Q: Is it part of a series?

A: It is one product specification within the suite of ASTM standards for copper and copper‑alloy wrought products; it is commonly used together with the general requirements specification (ASTM B248) and referenced ASTM test methods and practices for analysis, tensile and hardness testing.

Q: What are the key keywords?

A: Copper‑beryllium, C17000, C17200, plate, sheet, strip, rolled bar, precipitation hardening, tensile strength, Rockwell hardness, grain size, ASTM B194-22.