ISO 7217:2023

Titanium and titanium alloys - Bar, rod and billet - Technical delivery conditions

This document specifies requirements for the manufacture and technical delivery conditions of bar, rod and billet made from titanium and titanium alloys.

Titane et alliages de titane — Barre, tige et billette — Conditions techniques de livraison

General Information

• Status: Published
• Publication Date: 06-Apr-2023
• ICS: 77.120.50 - Titanium and titanium alloys
• Technical Committee: ISO/TC 79/SC 11 - Titanium
• Drafting Committee: ISO/TC 79/SC 11 - Titanium
• Current Stage: 9093 - International Standard confirmed
• Start Date: 24-Aug-2023
• Completion Date: 13-Dec-2025

Relations

• Amended By: ISO 7217:2023/Amd 1:2024 - Titanium and titanium alloys - Bar, rod and billet - Technical delivery conditions - Amendment 1: Effective utilization of ISO 23515 specifying the designation of chemical composition
• Effective Date: 26-Aug-2023

Overview

ISO 7217:2023 - Titanium and titanium alloys - Bar, rod and billet - Technical delivery conditions defines the manufacturing and delivery requirements for solid wrought titanium and titanium alloy bars, rods and billets. It standardizes purchaser information, manufacturing processes, chemical composition reporting, mechanical properties, dimensional tolerances, surface condition, inspection, marking, packaging and certification to support consistent quality and global trade.

Key Topics

• Scope and definitions: differentiates bar/rod (solid product ≤ 10 000 mm) and billet (> 10 000 mm) with uniform cross-sections (round, square, rectangular, polygons).
• Information to be supplied by purchaser: quantity, designation, dimensions, packaging, inspection level, mill product certificate and optional certification.
• Manufacturing: typical routes include hot-working (hot rolling, forging, extrusion) with subsequent cold work, surface conditioning and heat treatment.
• Chemical composition: limits and reporting requirements are given in Table 1; intentional alloying elements must be declared and “other elements” reported above agreed thresholds. Referee analysis methods include ASTM E2371, ASTM E539, ASTM E1409 (O, N), ASTM E1447 (H) and ASTM E1941 (C); ISO methods may be cited for Fe and O.
• Mechanical properties: tensile property requirements and test-piece sampling are specified (references include ISO 6892-1 and ASTM E8/E8M).
• Dimensional tolerances & straightness: diameter, width, thickness, length and straightness tolerances with options for special tolerances when required.
• Surface condition & NDT: acceptance criteria for surface imperfections and guidance for non‑destructive testing (NDT) and NDT personnel qualification (see ISO 11484).
• Inspection, marking & documentation: inspection levels, mill product certificates, marking and packaging requirements to ensure traceability and conformity.

Applications

ISO 7217:2023 is used by:

• Manufacturers and mill operators to define production, testing and delivery processes for titanium bars, rods and billets.
• Procurement/specifiers and fabricators to create unambiguous purchase orders and acceptance criteria.
• Quality, inspection and certification bodies to perform and verify chemical and mechanical testing and issue mill product certificates.
• Design and engineering teams in sectors that rely on titanium semi-finished products - e.g., aerospace, medical devices, chemical processing, energy and marine - for consistent material supply and compliance.

Related Standards

Standards referenced in ISO 7217 include ISO 377, ISO 6892-1, ISO 10474, ISO 28401, ISO 11484 and ASTM methods (E8/E8M, E29, E139, E1409, E1447, E1941, E2371). These provide test methods, sampling and inspection frameworks that support the technical delivery conditions in ISO 7217.

Keywords: ISO 7217:2023, titanium, titanium alloys, bar, rod, billet, technical delivery conditions, chemical composition, tensile properties, dimensional tolerance, inspection, mill product certificate.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 7217
First edition
2023-04
Titanium and titanium alloys — Bar,
rod and billet — Technical delivery
conditions
Titane et alliages de titane — Barre, tige et billette — Conditions
techniques de livraison
Reference number
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
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Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Information to be supplied by the purchaser . 2
4.1 General information. 2
4.2 Options. 2
5 Manufacturing . 3
6 Requirements . 3
6.1 General . 3
6.2 Chemical composition . 3
6.3 Tensile properties . 6
6.4 Dimensional tolerance . 8
6.4.1 General . 8
6.4.2 Tolerance of diameter and width across flats . 8
6.4.3 Tolerance of diameter for rounds with under 8 mm in diameter . 9
6.4.4 Tolerance of width and thickness . 9
6.4.5 Tolerance of length . 9
6.4.6 Straightness . 10
6.5 Surface conditions, imperfections and defects . 10
6.5.1 Non-destructive inspection . 10
7 Inspection .11
7.1 Types of inspection and inspection documents . 11
7.2 Specific inspection . 11
7.2.1 General . 11
7.2.2 Samples and test pieces for chemical composition and mechanical testing
for product analysis . 11
8 Rounding-off procedure.12
9 Reference test and analysis .12
10 Rejection .12
11 Marking . .12
11.1 General .12
11.2 Products marking . 13
12 Packaging.13
13 Mill product certificate .13
14 Certification .13
Bibliography .14
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 79, Light metals and their alloys,
Subcommittee SC 11, Titanium.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
This document was developed in response to worldwide demand for stabilizing the quality assurance
for titanium and titanium alloys by common regulations worldwide.
Determining condition concerning the technical delivery conditions for bar, rod and billet of titanium
and titanium alloys, such as chemical composition, mechanical properties and dimensional tolerance
is extremely important to promote commerce of titanium and titanium alloys products in the global
market.
The International Organization for Standardization (ISO) draws attention to the fact that it is claimed
that compliance with this document may involve the use of patents concerning titanium alloys given in
Table 1 and Table 2.
ISO takes no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured ISO that he/she is willing to negotiate licences under
reasonable and non-discriminatory terms and conditions with applicants throughout the world. In
this respect, the statement of the holder of this patent right is registered with ISO. Information may be
obtained from the patent database available at www.iso.org/patents.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights other than those in the patent database. ISO shall not be held responsible for identifying
any or all such patent rights.
v
INTERNATIONAL STANDARD ISO 7217:2023(E)
Titanium and titanium alloys — Bar, rod and billet —
Technical delivery conditions
1 Scope
This document specifies requirements for the manufacture and technical delivery conditions of bar, rod
and billet made from titanium and titanium alloys.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical
testing
ISO 6892-1:2019, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 10474:2013, Steel and steel products — Inspection documents
ISO 11484, Steel products — Employer's qualification system for non-destructive testing (NDT) personnel
ISO 28401, Light metals and their alloys — Titanium and titanium alloys — Classification and terminology
ASTM E8/E8M, Standard Test Methods for Tension Testing of Metallic Materials
ASTM E29, Practice for Using Significant Digits in test Data to Determine Conformance with Specifications
ASTM E539, Standard Test Method for Analysis of Titanium Alloys by Wavelength Dispersive X-Ray
Fluorescence Spectrometry
ASTM E1409, Test method for determination of oxygen and nitrogen in titanium and titanium alloys by the
inert gas fusion technique
ASTM E1447, Test method for determination of hydrogen in titanium and titanium alloys by the inert gas
fusion thermal conductivity/ Infrared detection method
ASTM E1941, Standard Test method for determination of Carbon in Refractory and Reactive Metals and
Their Alloys by Combustion Analysis
ASTM E2371, Standard Test method for Analysis of Titanium and Titanium alloys by Direct Current Plasma
and Inductively Coupled Plasma Atomic Emission Spectrometry (Performance-Based Test Methodology)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 28401 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
bar
rod
solid wrought product of uniform cross-section equal to or under 10 000 mm along its whole length,
supplied in straight lengths
Note 1 to entry: The cross-section is in the shape of rounds, squares, rectangles or regular polygons like hexagons
and octagons.
Note 2 to entry: Products with a square, rectangular or polygonal cross-section may have corners rounded along
their whole length.
3.2
billet
solid wrought product of uniform cross-section above 10 000 mm along its whole length, supplied in
straight lengths
Note 1 to entry: The cross-section is in the shape of rounds, squares, rectangles or regular polygons like hexagons
and octagons.
Note 2 to entry: Products with a square, rectangular or polygonal cross-section may have corners rounded along
their whole length.
4 Information to be supplied by the purchaser
4.1 General information
The purchase order shall include the following information:
a) quantity (e.g. total mass or total length)
b) designation
c) dimensions
d) packaging
e) inspection
f) mill product certificate
g) certification (document issued and/or validated by an independent third party that assures that a
product meets specified requirements such as a purchase order)
4.2 Options
A number of options are specified in this document and listed below. In the event that the purchaser
does not indicate a wish to implement any of these options at the time of enquiry and order, the bar, rod
or billet shall be supplied in accordance with the basic specification.
a) restrictive chemistry (see 6.2)
b) product analysis (see 6.2)
c) special mechanical properties (see 6.3)
d) special tolerance (see 6.4)
e) method of manufacture and finish (see Clause 5 and 6.5)
5 Manufacturing
The bar, rod and billet shall be manufactured by hot-working such as hot-rolling, hot-forging, hot-
extrusion of ingot or intermediate product followed by appropriate cold-working, if necessary, as well
as surface conditioning and heat treatment. The bar, rod and billet shall be supplied as solid wrought
product in straight shapes with uniform cross-section along their whole length.
6 Requirements
6.1 General
When supplied in the delivery condition indicated in 4.1 and inspected in accordance with Clause 7, the
bar, rod and billet shall conform to the requirements of this document.
6.2 Chemical composition
The bar, rod and billet of titanium and titanium alloys shall conform to the chemical requirements
prescribed in Table 1.
The elements listed in Table 1 are either intentional alloy additions or elements that are inherent to the
manufacture of titanium sponge, ingot, or mill product.
The content of any element intentionally added to the formulation of the heat shall be reported.
Other elements are those not specified in the relevant designated material such as Cr and Mo of Ti1-
0,18Pd and those not originally specified in the Table 1 such as Co and Hf. Generally, other elements
include aluminium, vanadium, tin, molybdenum, chromium, manganese, zirconium, nickel, copper,
silicon, cobalt, tungsten, hafnium and yttrium except for alloying elements contained in the designation.
The element which is taken as the other element shall be subjected to the agreement between the
manufacturer and the purchaser, and shall be noted in the purchase order.
Other elements should not be reported unless the content is greater than 0,1 % for each, or 0,4 % for
total. The content of yttrium should not be reported unless the content is greater than 0,005 % for each.
When agreed upon between the manufacturer and the purchaser and specified in the purchase order,
other specific residual elements not listed in Table 1 may be added and their content shall be reported.
The chemical analysis shall be conducted by the standard techniques normally used by the manufacturer
and the purchaser. In case of disagreement, the test methods defined in ASTM E2371 or ASTM E539
shall be used as the referee method except for carbon, oxygen and hydrogen, which are not covered in
these standards. Test methods defined in ISO 22960, ISO 22961 or ISO 22962 may be used as the referee
method for iron instead of ASTM E2371 or ASTM E539. The test method defined in ASTM E1409 shall
be used as a referee method for oxygen and nitrogen, and ISO 22963 may be used as a referee method
for oxygen. The test method defined in ASTM E1447 shall be used as a referee method for hydrogen and
the test method defined in ASTM E1941 shall be used as a referee method for carbon.
Table 1 — Chemical composition
Chemical composition in % mass fraction
Other elements
max
Designation C max O max N max H max Fe max Al V Pd Ru Ni Mo Cr Co Sn
single total
Ti1 0,08 0,18 0,03 0,015 0,20 0,1 0,4
Ti1H 0,08 0,18 0,03 0,015 0,20 0,1 0,4
Ti2L 0,08 0,20 0,03 0,015 0,25 0,1 0,4
Ti2 0,08 0,25 0,03 0,015 0,30 0,1 0,4
Ti3 0,08 0,35 0,05 0,015 0,30 0,1 0,4
Ti3H 0,08 0,35 0,05 0,015 0,30 0,1 0,4
Ti4 0,08 0,40 0,05 0,015 0,50 0,1 0,4
0,12-
Ti1-0,18Pd 0,08 0,18 0,03 0,015 0,20 0,1 0,4
0,25
0,12-
Ti1H-0,18Pd 0,08 0,18 0,03 0,013 0,20 0,1 0,4
0,25
0,12-
Ti2L-0,18Pd 0,08 0,20 0,03 0,015 0,25 0,1 0,4
0,25
0,12-
Ti2-0,18Pd 0,08 0,25 0,03 0,015 0,30 0,1 0,4
0,25
0,12-
Ti3H-0,018Pd 0,08 0,35 0,05 0,015 0,30 0,1 0,4
0,25
0,04-
Ti1-0,06Pd 0,08 0,18 0,03 0,015 0,20 0,1 0,4
0,08
0,04-
Ti1H-0,06Pd 0,08 0,18 0,03 0,013 0,20 0,1 0,4
0,08
0,04-
Ti2L-0,06Pd 0,08 0,20 0,03 0,015 0,25 0,1 0,4
0,08
0,04-
Ti2-0,06Pd 0,08 0,25 0,03 0,015 0,30 0,1 0,4
0,08
Ti2-0,75Ni- 0,2-
0,08 0,25 0,03 0,015 0,30 0,6-0,9 0,1 0,4
0,3Mo 0,4
Ti1L-0,5Ni- 0,04-
0,08 0,10 0,03 0,015 0,20 0,4-0,6 0,1 0,4
0,05Ru 0,06
Table 1 (continued)
Other elements
max
Designation C max O max N max H max Fe max Al V Pd Ru Ni Mo Cr Co Sn
single total
Ti2L-0,5Ni- 0,04-
0,08 0,15 0,03 0,015 0,30 0,4-0,6 0,1 0,4
0,05Ru 0,06
Ti2-0,5Ni- 0,04-
0,08 0,25 0,05 0,015 0,30 0,4-0,6 0,1 0,4
0,05Ru 0,06
Ti2-0,5Co- 0,04- 0,2-
0,08 0,25 0,03 0,015 0,30 0,1 0,4
0,06Pd 0,08 0,8
Ti3-0,5Co- 0,04- 0,2-
0,08 0,35 0,05 0,015 0,30 0,1 0,4
0,06Pd 0,08 0,8
Ti2-0,45Ni-
0,01- 0,02- 0,35- 0,1-
0,15Cr-0,03Ru- 0,08 0,25 0,03 0,015 0,30 0,1 0,4
0,02 0,04 0,55 0,2
0,015Pd
Ti3-0,45Ni-
0,01- 0,02- 0,35- 0,1-
0,15Cr-0,03Ru- 0,08 0,35 0,05 0,015 0,30 0,1 0,4
0,02 0,04 0,55 0,2
0,015Pd
2,0-
Ti-5Al-2,5Sn 0,08 0,20 0,03 0,015 0,50 4,0-6,0 0,1 0,4
3,0
Ti-1,5Al 0,08 0,25 0,03 0,015 0,30 1,0-2,0 0,1 0,4
...