GOST 24231-80 PDF

Full title and description

GOST 24231-80 — "Non-ferrous metals and alloys. General requirements for sampling and sample preparation for chemical analysis" (Russian: Цветные металлы и сплавы. Общие требования к отбору и подготовке проб для химического анализа). The standard establishes general rules for taking and preparing samples of non-ferrous metals and their alloys for routine chemical analysis.

Abstract

This standard specifies methods and general requirements for sampling (point/spot samples, templet cuts, drilling, sawing, milling) and for preparing those samples to ensure representative, uncontaminated material for chemical analysis of non‑ferrous metals and alloys. It excludes certain special cases (for example, some precious metals, mercury, sponge titanium and gas-analysis procedures) as noted in the text.

General information

• Status: Adopted by the State Committee for Standards of the USSR in 1980; remains the original GOST edition (with recorded amendments) and is listed in national catalogs and commercial repositories (status in national systems may vary by country).
• Publication date: Approved 10 June 1980 (Gosstandart decision) and published/entered into force in 1980 (often shown as 01 July 1980 in catalogues).
• Publisher: State Committee for Standards (Gosstandart) of the USSR / national standards bodies holding historic records.
• ICS / categories: Metallurgy — Non‑ferrous metals and alloys; classifier codes commonly shown under 77.120 (non‑ferrous metals).
• Edition / version: Original 1980 edition (designated GOST 24231-80) with subsequent amendments noted in commercial records (changes/editions listed as changes No.1 and No.2 / amendment references in catalogues).
• Number of pages: Short technical standard — typically 5 pages in the printed/codified form.

Scope

GOST 24231-80 applies to the sampling and preparation of material taken for chemical analysis from non‑ferrous metals and their alloys (ingots, billets, slabs, castings, semi‑finished products and the like). It gives general requirements for representative sampling procedures and sample‑preparation techniques intended to avoid contamination and loss of phases during mechanical sampling. The standard does not cover special procedures for some rare or precious metals, mercury, certain porous (sponge) titanium products, and does not formulate methods for gas composition analysis.

Key topics and requirements

• Definitions and types of samples: point (spot) samples, templet (section) samples, and composite samples.
• Recommended sampling methods: drilling, sawing, milling, cutting; permitted drill diameters and depths for different forms (ingots, slabs, blocks) to obtain representative material.
• Sampling locations and number of sample points for large castings/ingots (e.g., multiple drill/saw points across surfaces and ends to capture heterogeneity).
• Requirements to avoid contamination: appropriate tools, controlled machining speed (to prevent smearing or phase pull‑out), cleanliness, and avoidance of sampling methods that may redistribute components in non‑uniform alloys.
• Sample size and preparation: instructions on templet thicknesses, minimum depths for drilling, and subsequent preparation to produce material suitable for analytical chemistry methods.
• Applicability limits and exclusions: special alloys and analytical techniques (e.g., gas analysis) handled by separate normative documents.

Typical use and users

Used by metallurgical works, casting shops, quality control and analytical chemistry laboratories, inspection bodies, material engineers and specification writers who need standardised procedures for taking representative samples from non‑ferrous metals and alloys prior to chemical composition analysis. It is also referenced by other GOSTs and product specifications dealing with non‑ferrous alloys.

Related standards

GOST 24231-80 is commonly referenced by product and materials standards that specify chemical-analysis methods or alloy specifications (for example, standards on aluminum and aluminium alloys, bimetallic strips and other non‑ferrous alloy product standards). Examples of documents that cite or use GOST 24231-80 in their references include national GOSTs on aluminium alloys and bearing materials. Users should check product‑specific standards (e.g., those for particular alloy grades) for cross‑references.

Keywords

GOST 24231-80; non‑ferrous metals; alloys; sampling; sample preparation; chemical analysis; ingots; drilling; templet; contamination control.

FAQ

Q: What is this standard?

A: GOST 24231-80 is a Soviet (Gosstandart) standard from 1980 setting out general requirements for taking and preparing samples of non‑ferrous metals and alloys for chemical analysis.

Q: What does it cover?

A: It covers types of samples, recommended sampling techniques (drilling, sawing, milling, templet cuts and composite sampling), sampling locations and number of points for various product forms, and precautions to avoid contamination or phase loss during sampling and preparation. It does not define specialized analytical methods or some special cases such as certain precious metals, mercury, sponge titanium, or gas‑analysis sampling.

Q: Who typically uses it?

A: Metallurgical plants, QA/QC laboratories, metallurgists, inspectors and standards writers use it as a procedural reference to ensure representative and uncontaminated samples for chemical testing of non‑ferrous metals and alloys.

Q: Is it current or superseded?

A: The document is the original 1980 GOST edition (with recorded amendments). Its formal status can vary by country: it appears in national catalogs and commercial repositories and is referenced by later standards. Users should verify the legal status in their jurisdiction or check whether a later national adoption, replacement or modification exists for their specific application.

Q: Is it part of a series?

A: It is part of the body of GOST standards covering non‑ferrous metals and metallurgical testing practices and is referenced by product‑specific GOSTs and related test method standards; it should be used alongside the specific chemical‑analysis method standards applicable to the alloy under test.

Q: What are the key keywords?

A: Non‑ferrous metals, alloys, sampling, sample preparation, chemical analysis, ingots, drill sampling, templet, contamination prevention.