BS 5996-1993_1998

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BRITISH STANDARD BS 5996:1993

Specification for

Acceptance levels for

internal imperfections

in steel plate, strip and

wide flats, based on

ultrasonic testing

UDC 669.14-41:620.179.16

BS5996:1993

This British Standard, having

been prepared under the

direction of the Iron and Steel

Standards Policy Committee,

was published under the

authority of the Standards

Board and comes into effect on

15 August 1993

First published as DD 21, 1972

First published as BS 5996,

October1980

Second edition August 1993

The following BSI references

relate to the work on this

standard:

Committee reference ISM 73

Draft for comment 91 47792 DC

ISBN 0 580 21676 4

Committees responsible for this

British Standard

The preparation of this British Standard was entrusted by the Iron and Steel

Standards Policy Committee (ISM/-) to Technical Committee ISM/73, upon

which the following bodies were represented:

Associated Offices Technical Committee

BEAMA Ltd.

British Forging Industry Association

British Gas plc

British Steel Industry

Electricity Supply Industry in England and Wales

Engineering Equipment and Materials Users’ Association

Lloyd’s Register of Shipping

Power Generation Contractors’ Association (BEAMA Ltd.)

Process Plant Association

Seamless Steel Tube Association

Welding Institute

Coopted members

The following body was also represented in the drafting of the standard,

through subcommittees and panels:

National Association of Steel Stockholders

Amendments issued since publication

Amd. No. Date Comments

BS5996:1993

Contents

Page

Committees responsible Inside front cover

Foreword ii

1Scope 1

2Normative references 1

3Definitions 1

4Acceptance levels 1

Annex A (normative) Method for ultrasonic testing of

steel plate, strip and wide flats 5

Annex B (normative) Technique for establishing a distance

amplitude correction (DAC) curve 7

Annex C (normative) Determination of the size of internal

imperfections by manual ultrasonic scanning 8

Figure 1 — Schematic representation of terms 4

Table 1 — Acceptance criteria for material body examination 2

Table 2 — Acceptance criteria for material edge examination 3

Table A.1 — Types of ultrasonic transducer for manual

and assisted manual testing 5

Table A.2 — Band width for material edge testing 6

List of references Inside back cover

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摘要：

BS 5996-1993（1998年确认）是英国标准学会发布的关于铁素体钢板的超声检测方法标准，主要适用于厚度在6毫米至250毫米范围内的碳钢、低合金钢及部分不锈钢板材的内部缺陷检测。该标准规定了使用直探头和斜探头进行接触式或液浸式超声检测的技术要求，包括校准方法、灵敏度设定、缺陷记录及验收等级划分。其内容涵盖了从薄板到中厚板的典型工业应用场景，如压力容器、结构钢及船舶制造，并提供了A、B、C三级验收标准，分别对应不同质量要求的工件。1998年的重新确认确保了该标准在无损检测领域持续有效，至今仍

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BS 5996-1993_1998

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