Bsi bs en 00611 1 1996 (1999)

www bzfxw com BRITISH STANDARD BS EN 611 1 1996 Tin and tin alloys — Pewter and pewterware — Part 1 Pewter The European Standard EN 611 1 1995 has the status of a British Standard ICS 77 120 60 BS EN[.]

BRITISH STANDARD BS EN

611-1:1996

Tin and tin alloys —

Pewter and

pewterware —

Part 1: Pewter

The European Standard EN 611-1:1995 has the status of a

British Standard

ICS 77.120.60

This British Standard, having

been prepared under the

direction of the Engineering

Sector Board, was published

under the authority of the

Standards Board and

comes into effect on

15 February 1996

© BSI 08-1999

The following BSI references

relate to the work on this

standard:

Committee reference NFE/27

Draft for comment 92/35561 DC

ISBN 0 580 25348 1

Committees responsible for this British Standard

The preparation of this British Standard was entrusted to Technical Committee NFE/27, Tin and tin alloys, upon which the following bodies were represented:

Association of British Pewter Craftsmen British Iron and Steel Producers’ Association Federation of the Electronics Industry ITRI Ltd

London Metal Exchange Metal Packaging Manufacturers’ Association Solder Makers’ Association

Amendments issued since publication

Amd No Date Comments

BS EN 611-1:1996

Contents

Page Committees responsible Inside front cover

ii © BSI 08-1999

National foreword

This British Standard has been prepared by Technical Committee NFE/27 and is

the English language version of EN 611-1:1995 Tin and tin alloys — Pewter and

pewterware — Part 1: Pewter, published by the European Committee for

Standardization (CEN) It partially supersedes BS 5140:1988, which will be withdrawn upon publication of BS EN 611-21)

The United Kingdom took an active part in the preparation of EN 611-1:1995

A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application

Compliance with a British Standard does not of itself confer immunity from legal obligations.

Summary of pages

This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, an inside back cover and a back cover

This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover

1) In preparation.

Cross-references Publication referred to Corresponding British Standard

EN 610:1995 BS EN 610:1996 Tin and tin alloys — Ingot tin

EN 29453:1994 BS EN 29453:1994 Soft solder alloys — Chemical

compositions and forms

EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN 611-1

July 1995

ICS 77.120.60

Descriptors: Tin, tin alloys, ingots, sheets, manufacturing, works of art, specifications, chemical composition, sampling, marking

English version Tin and tin alloys — Pewter and pewterware —

Part 1: Pewter

Étain et alliages d’étain — Étain pour la

fabrication d’objets en étain et objets en

étain — Partie 1: Étain pour la fabrication

d’objets en étain

Zinn und Zinnlegierungen — Zinnlegierungen und Zinngerät —

Teil 1: Zinnlegierungen

This European Standard was approved by CEN on 1995-06-05 CEN members

are bound to comply with the CEN/CENELEC Internal Regulations which

stipulate the conditions for giving this European Standard the status of a

national standard without any alteration

Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the Central Secretariat or to any

CEN member

This European Standard exists in three official versions (English, French,

German) A version in any other language made by translation under the

responsibility of a CEN member into its own language and notified to the

Central Secretariat has the same status as the official versions

CEN members are the national standards bodies of Austria, Belgium,

Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,

Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and

United Kingdom

CEN

European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung

Central Secretariat: rue de Stassart 36, B-1050 Brussels

© 1995 All rights of reproduction and communication in any form and by any means reserved in all

countries to CEN and its members

Ref No EN 611-1:1995 E

© BSI 08-1999

2

Foreword

This European Standard has been prepared by the

Technical Committee CEN/TC 220, Tin and tin

alloys, of which the secretariat is held by BSI

This European Standard consists of two Parts, of

which Part 1 specifies the requirements for pewter

alloys The compositions of pewter alloys in Part 1

are based largely on proposals from the European

Pewter Union Part 2 of EN 611 will specify

requirements for pewterware, made from the

pewter alloys specified in Part 1

This European Standard shall be given the status of

a national standard, either by publication of an

identical text or by endorsement, at the latest by

January 1996, and conflicting national standards

shall be withdrawn at the latest by January 1996

According to the CEN/CENELEC Internal

Regulations, the following countries are bound to

implement this European Standard: Austria,

Belgium, Denmark, Finland, France, Germany,

Greece, Iceland, Ireland, Italy, Luxembourg,

Netherlands, Norway, Portugal, Spain, Sweden,

Switzerland and the United Kingdom

Contents

Page

2 Normative references 3

4 Ordering information 3

6 Selection and preparation of samples

8 Inspection documentation 4

9 Marking and labelling of ingots,

Annex A (normative) Rounding rules 5 Annex B (normative) Method for sampling

ingots, sheets and blanks for analysis 5 Annex C (normative) Solders in

EN 29453 referred to in 5.2 6 Table 1 — Chemical composition of

Table B.1 — Sampling rate for batch of ingots 5 Table C.1 — Chemical composition of

EN 611-1:1995

1 Scope

This Part of EN 611 specifies the chemical

composition of pewter alloys to be used for the

manufacture of pewterware The specified

compositions apply to the alloy in the form of ingots,

sheets and blanks

This Part of EN 611 also specifies the chemical

composition of the solders to be used for the joining

of:

a) pewterware which may reasonably be expected

to come into contact with foodstuffs; and

b) pewterware for other purposes

NOTE The requirements for pewterware and the procedures for

sampling pewterware are specified in prEN 611-2.

2 Normative references

This Part of this European Standard incorporates

by dated or undated reference, provisions from other

publications These normative references are cited

at the appropriate places in the text and the

publications are listed hereafter For dated

references, subsequent amendments to or revisions

of any of these publications apply to this European

Standard only when incorporated in it by

amendment or revision For undated references the

latest edition of the publication referred to applies

EN 610, Tin and tin alloys — Ingot tin

EN 29453, Soft solder alloys — Chemical

compositions and forms

3 Definitions

For the purposes of this standard the following definitions apply

3.1 ingot

cast, unwrought product in a form suitable only for remelting

3.2 sheet

rolled flat product supplied in straight lengths

3.3 blank

shape stamped, or cut, from a sheet

3.4 batch

series of ingots, sheets or blanks produced from a single uniform melt

4 Ordering information

The following information shall be supplied by the purchaser in the enquiry and/or order, to assist the supplier in providing the correct material:

a) the number of this Part of this European Standard (EN 611-1);

b) the pewter alloy required (see Table 1);

c) whether ingots, sheets or blanks are required; d) if sheets or blanks are required, their nominal dimensions;

e) the quantity required;

Table 1 — Chemical composition of pewter alloys

Composition in % (m/m)

Pewter

alloy

Total other elements

1 Remainder, but tin + silver not

less than 91 % min.max. —4,0a

— 0,5

— 0,05

1,0 2,5

— 0,25

5,0 7,0

— 0,2

2 Remainder, but not less than

94 % min.max. —0,05 —0,5 —0,05 0,52,5 —0,25 3,05,0 —0,2

3 Remainder, but not less than

91,5 % min.max. —0,05 —0,5 —0,05 0,252,0 —0,25 4,58,0 —0,2

4 Remainder, but not less

than 94 % min.max. —0,05 —0,5 —0,05 —0,05 —0,25 3,06,0 —0,2

5 Remainder, but not less

than 92,5 % min.max. —0,05 —0,5 —0,05 —0,05 —0,25 6,57,5 —0,2

max

— 0,05

— 0,5

— 0,05

— 1,5

— 0,25

— 2,5

— 0,2

a For alloy 1, the silver range required, up to a maximum of 4,0 %, Ag, shall be agreed between the purchaser and the supplier, and

stated in the order [see 4 g)].

f) whether a certificate of analysis or a statement

of conformity is required (see clause 8);

g) for alloy 1, the agreed range for the silver

content (see Table 1);

h) the specific packaging requirements

5 Requirements

5.1 Chemical composition of pewter alloys

The chemical composition of the pewter alloys in the

form of ingots, sheets or blanks, shall conform to the

requirements for the appropriate alloy given

in Table 1 when determined on samples selected in

accordance with clause 6 In expressing the results

for the analysis, the values obtained shall be

rounded to the same number of decimal places as

used in expressing the specified limit given in

Table 1 The rounding rules are given in Annex A

Methods for sampling a batch for analysis are given

in Annex B

5.2 Chemical composition of solders for

joining pewterware

For those cases where the soldered joint may

reasonably be expected to come into contact with

foodstuffs, the solder used for joining the component

parts of the pewterware shall contain not more

than 0,25 % lead and 0,05 % cadmium Examples of

solders which meet this requirement are as follows:

a) one of the alloys designated 1 to 6 in Table 1 of

this Part of this European Standard; or

b) alloy No 21 in EN 29453 (see Annex C); or

c) tin conforming to any of the grades specified in

EN 610

NOTE It is recommended that soldered joints which may

reasonably be expected not to come into contact with foodstuffs

should be made using solder which conforms to a), b), c) of this

subclause, or to alloy No 11 or alloy No 12 in EN 29453

(see Annex C).

6 Selection and preparation of

samples for analysis

When analysis is to be carried out to verify

conformity of a batch of ingots, sheets or blanks with

the composition requirements of this European

Standard, the selection of the samples, and the

preparation of the analysis samples, shall be in

accordance with Annex B

7 Analytical methods

For routine control purposes, the samples selected

and prepared in accordance with clause 6 shall be

analysed by the use of recognized chemical or instrumental analytical methods In cases of dispute concerning the results of chemical analysis

of pewter ingots, sheets or blanks, until the publication of European Standards2) for the analysis of pewter, the analytical methods to be used shall be subject to agreement between the disputing parties and any independent arbitrator

8 Inspection documentation

The supplier shall provide inspection documentation with each consignment of ingots, sheets or blanks The documentation shall be as requested by the purchaser in the enquiry and/or

order [see 4 f)], and shall be in accordance with

either a) or b) as follows:

a) a certificate giving the chemical analysis specific to each batch in the consignment, based

on sample(s) taken from the melt from which the batch was produced; or

b) a statement of conformity of the consignment with the order requirements

NOTE The statement of conformity does not necessarily relate

to specific tests carried out on the consignment.

9 Marking and labelling of ingots, sheets and blanks

9.1 Ingots

All ingots, or bundles of ingots, shall be marked with all the following information:

a) number of this Part of this European Standard (EN 611-1);

b) pewter alloy number (see Table 1);

c) producer’s name or mark; and d) batch identification

9.2 Sheets and blanks

Each packaging unit of sheets and/or blanks shall have affixed a label giving the following

information:

a) number of this Part of this European Standard (EN 611-1);

b) pewter alloy number (see Table 1);

c) producers name or mark; and d) batch identification

2) In course of preparation

EN 611-1:1995

Annex A (normative)

Rounding rules

For the purposes of determining conformity with

compositional limits an observed value, or a

calculated value, obtained from the analysis is

rounded to the same number of decimal places as

used in this European Standard in expressing the

specified limit The following rules shall be used for

rounding:

a) if the figure immediately after the last figure to

be retained is less than five, the last figure to be

retained shall be kept unchanged;

b) if the figure immediately after the last figure to

be retained is equal to or greater than five, the

last figure to be retained shall be increased by

one

Annex B (normative)

Method for sampling ingots, sheets

and blanks for analysis

B.1 Sampling of ingots

B.1.1 Principle

A number of ingots is randomly selected from the

batch Sawcuts are made systematically in the

selected ingots and the resulting sawings are

combined Analysis samples are obtained by

splitting the aggregated sample

B.1.2 Materials and apparatus

B.1.2.1 Steel wire brush

B.1.2.2 Soft bristle brush

B.1.2.3 Powered hacksaw, equipped with a steel

blade for coarse cutting

B.1.2.4 Large magnet

B.1.2.5 Degreasing solvent

B.1.2.6 Sample splitter, or equipment for coning

and quartering

B.1.3 Procedure

B.1.3.1 Selection of sample ingots from the batch

According to the number of ingots in the batch,

randomly select a number of sample ingots in

accordance with the ingot sampling rate given

in Table B.1

Table B.1 — Sampling rate for batch of ingots

B.1.3.2 Preparation of sample ingots

Ensure the sample ingots (B.1.3.1) are free of oil and

grease Clean the sample ingots by scratch brushing

the surface, using the steel wire brush (B.1.2.1)

Then use the soft brush (B.1.2.2) to remove any

loose surface contaminants

B.1.3.3 Sawing the sample ingots

Cut off, by sawing using the hacksaw (B.1.2.3), a quarter of the length of each sample ingot (B.1.3.2).

NOTE The sawcut should not be made through the end lug of the ingot If any sample ingot has end lugs which are longer than one-quarter the length of the ingot, the cut should be made closer

to the centre of the length of the ingot, such that the full cross-section of the ingot is sampled.

Collect the sawings from each sample ingot

Aggregate and mix the sawings and remove any free

iron with a magnet (B.1.2.4).

B.1.3.4 Obtaining the analysis sample

Reduce the aggregated sample obtained in B.1.3.3

by means of the sample splitter or by coning and

quartering (B.1.2.6), to obtain one, or more,

representative samples of suitable size for analysis

B.2.1 Principle

Small pieces are cut from a number of sheets or blanks in the batch The pieces are aggregated, melted and cast in a chill mould Sawings, drillings

or millings are taken from the resulting casting, to produce the analysis sample

B.2.2 Materials and apparatus

In addition to small-scale facilities for melting and casting pewter alloys, the following are required

B.2.2.1 Shears, or cutter, to obtain small pieces from sheets or blanks

B.2.2.2 Scales, capable of weighing up to 200 g

in 1 g divisions

B.2.2.3 Saw, drill or milling machine

B.2.2.4 Hand magnet

B.2.3 Procedure

B.2.3.1 For sheets, and for blanks of mass over 50 g

Randomly select four sheets or blanks from the batch From each of the selected sheets or blanks

use the shears or cutter (B.2.2.1) to cut, from

random locations, approximately 50 g of small pieces Aggregate the small pieces

B.2.3.2 For blanks of mass up to 50 g

Randomly select a number of whole blanks to give a combined mass of approximately 200 g

Number of ingots in batch Number of sample ingots

over 60 10 % of ingots in batch

B.2.3.3 Obtaining the analysis sample

Melt the aggregated small pieces (B.2.3.1), or the

selected blanks (B.2.3.2) in a clean iron or fireclay

crucible Stir well and chill-cast the melt into a clean

iron or steel mould Take sawings, drillings or

millings from the resulting casting Remove any free

iron with a magnet (B.2.2.4) and mix thoroughly to

produce the analysis sample

Annex C (normative) Solders in EN 29453 referred to in 5.2

Table C.1 gives the chemical composition requirements for solders with the alloy

numbers 21, 11 and 12, referred to in clause 5.2 of

this European Standard The details have been extracted from EN 29453