ДСТУ EN 12420:2015 Мідь і мідні сплави. Поковки (EN 12420:2014, IDT)

ДСТУ EN 12420:2015
(EN 12420:2014, IDT)

Мідь і мідні сплави. Поковки

 
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Designations

4.1 Material

4.2 Material condition

4.3 Product

5 Ordering information

6 Requirements

6.1 Composition

6.2 Mechanical properties

6.3 Electrical properties

6.4 Resistance to dezincification

6.5 Residual stress level

6.6 Tolerances for die forgings

6.7 Tolerances for cored forgings

6.8 Tolerances for hand forgings

6.9 Surface quality

6.10 Drawings

7 Sampling

7.1 General

7.2 Analysis

7.3 Hardness, stress corrosion resistance, dezincification resistance and electrical property tests

8 Test methods

8.1 Analysis

8.2 Hardness test

8.3 Electrical conductivity test

8.4 Dezincification resistance test

8.5 Stress corrosion resistance test

8.6 Retests

8.7 Rounding of results

9 Declaration of conformity and inspection documentation

9.1 Declaration of conformity

9.2 Inspection documentation

10 Marking, labelling, packaging

Annex A (informative) Recommended guidelines for design

Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC, Pressure Equipment Directive (PED)

Bibliography