ISO 12215-3-2002 PDF

Full title and description

ISO 12215-3:2002 — Small craft — Hull construction and scantlings — Part 3: Materials: Steel, aluminium alloys, wood, other materials. This part specifies minimum material requirements and properties for materials intended for hulls, superstructures and appendages of small craft (hull length up to 24 m according to ISO 8666), including weldable hot‑rolled steels, austenitic stainless steels, wrought aluminium alloys, timber, plywood and other suitable materials.

Abstract

This part of ISO 12215 sets out the material categories, mandatory minimum properties and suitability criteria to be used when selecting and specifying materials for small craft hull construction and appendlings. It emphasizes ductility and weldability of steels, appropriate aluminium alloy forms, and acceptable timber/plywood forms, and notes that other materials may be used if demonstrated to be of equivalent suitability and durability for the intended purpose.

General information

• Status: Published — International Standard (confirmed through ISO systematic reviews).
• Publication date: May 2002 (2002‑05).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: Small craft / hulls and materials — common ICS entries include 47.080 and related shipbuilding categories (47.020.x).
• Edition / version: Edition 1 (2002).
• Number of pages: 10 pages (ISO bibliographic entry).

(Bibliographic and lifecycle details are recorded on the ISO catalogue; national/adopted editions (EN, BS, NF, etc.) may show different pagination or national status.)

Scope

Applies to materials used in the construction of hulls, superstructures and appendages of small craft having a hull length (LH) up to 24 m (ISO 8666). It specifies material categories and minimum properties for: weldable normal and higher‑strength hot‑rolled steel plates, flats, sections and bars; austenitic stainless steels in plate/profile form; wrought aluminium alloys (plates, sections, extrusions); timber (solid timber, plywood, veneer); and allows for other suitable materials where equivalence can be demonstrated.

Key topics and requirements

• Material categories covered: hot‑rolled steels (normal and higher strength), austenitic stainless steels, wrought aluminium alloys, solid timber, plywood/veneers, and other acceptable materials.
• Minimum mechanical properties for normal (mild) steel: typical values given as yield strength Re ≈ 235 N/mm2 and tensile strength Rm ≈ 340 N/mm2 (as a baseline preference because of ductility and weldability).
• Higher strength steels: permitted with specified limits (mechanical property ranges given and cautions about fatigue and heat‑treatment/welding effects).
• Requirements and guidance for aluminium alloys and stainless steels in forms suitable for marine fabrication (plates, extrusions, profiles) and for acceptable timber products (solid, plywood, veneer).
• Provision that alternative or novel materials may be used if their suitability and durability can be demonstrated to be equivalent to the listed materials for the intended service.

Typical use and users

Used by small craft naval architects and structural designers, boatbuilders and manufacturers, materials engineers, surveyors and classification societies, regulators and standards committees when specifying or checking material selection and minimum properties for hull and structural components of recreational and small commercial vessels up to 24 m. The standard supports scantling and strength assessments carried out under the wider ISO 12215 series.

Related standards

ISO 12215 is a multipart series; related parts include (examples): Part 1 — materials for thermosetting resins and glass‑fibre reinforcement (ISO 12215‑1:2000), Part 2 (materials for core/sandwich constructions), Part 4 — workshop and manufacturing (ISO 12215‑4:2002), and later updated parts that cover design pressures, stresses and scantling determination (ISO 12215‑5, edition 2019) and other structural detail parts (6–10). Users should consult the relevant part(s) of the ISO 12215 series for design/calculation and manufacturing guidance.

Keywords

small craft; hull construction; scantlings; materials; steel; aluminium alloys; stainless steel; timber; plywood; ISO 8666; design materials; welding; maritime standards.

FAQ

Q: What is this standard?

A: ISO 12215‑3:2002 is the part of the ISO 12215 series that sets out material requirements and minimum properties for steel, aluminium alloys, wood and other materials intended for small craft hulls, superstructures and appendages (hull length up to 24 m).

Q: What does it cover?

A: It covers the types of acceptable materials, minimum mechanical property requirements (for example baseline yield and tensile values for normal strength steel), forms of supply (plates, sections, extrusions, plywood, veneers), and the principle that other materials may be used if demonstrated equivalent. It does not itself set full scantling calculations (those are in other parts of the series such as Part 5).

Q: Who typically uses it?

A: Naval architects, structural designers, boatbuilders, materials engineers, surveyors and classification/regulatory bodies involved in small craft design, construction and certification. It is referenced alongside other ISO 12215 parts when completing scantling and strength assessments.

Q: Is it current or superseded?

A: ISO 12215‑3:2002 is recorded as a published ISO International Standard (Edition 1, 2002) and has been subject to ISO systematic reviews; the ISO bibliographic entry shows it in the published/confirmed lifecycle. However, elements of the broader ISO 12215 series have been revised in later years (for example Part 5 was reissued as ISO 12215‑5:2019). National adoptions (EN/BS/NF, etc.) may have been withdrawn or updated at national level even when the ISO bibliographic status is confirmed — consult ISO and your national standards body for the latest national adoption status.

Q: Is it part of a series?

A: Yes — ISO 12215 is a multipart standard (Parts 1–10 and related annexes across the series) covering materials, manufacturing, design pressures, scantlings, structural details, multihulls, rudders, appendages and rig loads. Users should reference the appropriate part(s) together for complete design and construction guidance.

Q: What are the key keywords?

A: Small craft, hull construction, scantlings, materials, steel, aluminium, stainless, timber, plywood, weldability, ISO 8666.