SIST EN 2037:2018

Aerospace series - Hexagonal steel bars drawn - Dimensions - Tolerances h 11 and h 12

This European Standard specifies the dimensions, tolerances and physical constants of drawn hexagonal steel bars used in aerospace construction.

Luft- und Raumfahrt - Sechskantstangen aus Stahl gezogen - Abmessungen - Toleranzen h 11 und h 12

Série aérospatiale - Barres hexagonales étirées en acier - Dimensions - Tolérances h 11 et h 12

Aeronavtika - Šesterokotne vlečene jeklene palice - Mere - Tolerance h 11 in h 12

Ta evropski standard določa mere, tolerance in fizikalne konstante pravokotnih šesterokotnih vlečenih jeklenih palic, ki se uporabljajo v aeronavtiki.

General Information

• Status: Published
• Publication Date: 17-Dec-2017
• ICS: 49.025.10 - Steels
• ICS: 77.140.60 - Steel bars and rods
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Nov-2017
• Due Date: 14-Jan-2018
• Completion Date: 18-Dec-2017
• Ref Project: EN 2037:2017 - Aerospace series - Hexagonal steel bars drawn - Dimensions - Tolerances h 11 and h 12

Overview

EN 2037:2017 (CEN) is a European dimensional standard for drawn hexagonal steel bars used in aerospace construction. The standard specifies the permitted dimensions, tolerances and physical constants for hexagonal bars, and references material requirements to the relevant material standards (for example, EN 2030). It was prepared by ASD-STAN and adopted for implementation by CEN member bodies.

This document ensures a common reference for manufacturers, designers and quality engineers working with hexagonal steel bars in aerospace applications.

Key Topics

• Dimensional codes and sizes: The standard defines a series of dimensional codes (e.g., AA through BD) covering widths across flats from small sections (around 3.2 mm) up to larger sections (up to 80 mm). Each code maps to a nominal width, cross-sectional area and approximate linear mass.
• Tolerances: Tolerances are given using ISO tolerance grades: h11 is applied for widths A ≤ 65 mm and h12 for A > 65 mm. The table in the standard lists specific tolerance ranges and the applicable grade per dimensional code.
• Physical constants: Cross-sectional areas and linear mass are tabulated; linear mass is calculated using a steel density basis of 7.85 kg/dm³, allowing designers to estimate component mass and material handling requirements.
• Materials and references: Material specifications are defined in the relevant material standards (e.g., EN 2030 for certain steel grades). Normative references and applicable ISO standards (such as the ISO tolerance code system) are cited for complete application.
• Designation and marking: The standard prescribes a simple designation format that may include product name, material standard number, dimension (or dimensional code) and the dimensional standard number (EN 2037). Marking of semi-finished products should follow the applicable technical specification.

Applications

EN 2037:2017 is relevant to:

• Aerospace designers specifying hexagonal steel bar raw material for fasteners, fittings and machined components.
• Manufacturers of drawn hexagonal steel bars who require standardized dimensional codes, mass data and tolerance classes for production and inspection.
• Quality and procurement teams ensuring interchangeability, consistent acceptance criteria and traceability across suppliers.

Practical benefits include simplified parts interchange, clearer procurement specifications, consistent inspection criteria and predictable component mass for structural calculations.

Related Standards

• EN 2030 - referenced material specification for certain steel grades used in aerospace bars.
• EN 4700 (all parts) - technical specification for steel and heat resisting alloy wrought products.
• ISO 286 (all parts) - ISO code system for tolerances on linear sizes (used for h11/h12 tolerance definitions).

For implementation, consult the full EN 2037:2017 text and the cited normative documents to ensure correct application of dimensions, tolerance ranges, material call-outs and marking rules.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Sechskantstangen aus Stahl gezogen - Abmessungen - Toleranzen h 11 und h 12Série aérospatiale - Barres hexagonales étirées en acier - Dimensions - Tolérances h 11 et h 12Aerospace series - Hexagonal steel bars drawn - Dimensions - Tolerances h 11 and h 1277.140.60Jeklene palice in drogoviSteel bars and rods49.025.10JeklaSteelsICS:Ta slovenski standard je istoveten z:EN 2037:2017SIST EN 2037:2018en,fr,de01-februar-2018SIST EN 2037:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2037
October
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Aerospace series æ Hexagonal steel bars drawn æ Dimensions æ Tolerances h
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s t Série aérospatiale æ Barres hexagonales étirées en acier æ Dimensions æ Tolérances h
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Luftæ und Raumfahrt æ Sechskantstangen aus Stahl gezogen æ Abmessungen æ Toleranzen h
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s t This European Standard was approved by CEN on
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egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
t r u yã t r s y ESIST EN 2037:2018
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