{"id":302248,"date":"2024-10-19T20:38:48","date_gmt":"2024-10-19T20:38:48","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-124202014\/"},"modified":"2024-10-25T18:09:28","modified_gmt":"2024-10-25T18:09:28","slug":"bs-en-124202014","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-124202014\/","title":{"rendered":"BS EN 12420:2014"},"content":{"rendered":"

This European Standard specifies the composition, the property requirements and tolerances on dimensions and form for copper and copper alloy die and hand forgings.<\/p>\n

The sampling procedures, the methods of test for verification of conformity to the requirements of this standard, and the delivery conditions are also specified.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
8<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
10<\/td>\n4 Designations
4.1 Material
4.1.1 General
4.1.2 Symbol
4.1.3 Number
4.2 Material condition
4.3 Product <\/td>\n<\/tr>\n
12<\/td>\n5 Ordering information
6 Requirements
6.1 Composition <\/td>\n<\/tr>\n
13<\/td>\n6.2 Mechanical properties
6.2.1 Hardness properties
6.2.2 Tensile properties
6.3 Electrical properties
6.4 Resistance to dezincification
6.5 Residual stress level
6.6 Tolerances for die forgings
6.6.1 General <\/td>\n<\/tr>\n
14<\/td>\nFigure 3 \u2014 Die forging
6.6.2 Tolerances for dimensions within the die cavity and for dimensions across the die parting line <\/td>\n<\/tr>\n
15<\/td>\nFigure 4 \u2014 Area A (in mm2) = nmax \u00d7 n
6.6.3 Mismatch <\/td>\n<\/tr>\n
16<\/td>\n6.6.4 Flash projection <\/td>\n<\/tr>\n
17<\/td>\nFigure 10 \u2014 Flash projection
6.6.5 Ejector marks
Figure 11 \u2014 Ejector marks
6.6.6 Flatness tolerances <\/td>\n<\/tr>\n
18<\/td>\nFigure 12 \u2014 Dimension nmax used as reference dimension of flatness tolerance
6.6.7 Angular tolerances
Figure 13 \u2014 Definition of shorter leg
6.7 Tolerances for cored forgings <\/td>\n<\/tr>\n
19<\/td>\nFigure 14 \u2014 Cored forgings (products cored in the forging direction)
Figure 15 \u2014 Cored forgings (products cored normally to the forging direction)
6.8 Tolerances for hand forgings
6.8.1 General <\/td>\n<\/tr>\n
20<\/td>\n6.8.2 Tolerances on dimensions
Figure 16 \u2014 Dimensions t and n
Figure 17 \u2014 Dimensions + a and \u2013 a
6.8.3 Flatness tolerance <\/td>\n<\/tr>\n
21<\/td>\n6.9 Surface quality
6.10 Drawings
7 Sampling
7.1 General
7.2 Analysis <\/td>\n<\/tr>\n
22<\/td>\n7.3 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 <\/td>\n<\/tr>\n
23<\/td>\n8.6 Retests
8.6.1 Analysis, hardness, electrical conductivity and dezincification resistance tests
8.6.2 Stress corrosion resistance test
8.7 Rounding of results
9 Declaration of conformity and inspection documentation
9.1 Declaration of conformity
9.2 Inspection documentation <\/td>\n<\/tr>\n
24<\/td>\n10 Marking, labelling, packaging <\/td>\n<\/tr>\n
25<\/td>\nTable 1 \u2014 Composition of copper <\/td>\n<\/tr>\n
26<\/td>\nTable 2 \u2014 Composition of copper alloys, low alloyed <\/td>\n<\/tr>\n
27<\/td>\nTable 3 \u2014 Composition of copper-aluminium alloys <\/td>\n<\/tr>\n
28<\/td>\nTable 4 \u2014 Composition of copper-nickel alloys
Table 5 \u2014 Composition of copper-nickel-zinc alloys <\/td>\n<\/tr>\n
29<\/td>\nTable 6 \u2014 Composition of copper-zinc alloys, binary <\/td>\n<\/tr>\n
30<\/td>\nTable 7 \u2014 Composition of copper-zinc-lead alloys <\/td>\n<\/tr>\n
31<\/td>\nTable 8 \u2014 Composition of copper-zinc alloys, complex <\/td>\n<\/tr>\n
32<\/td>\nTable 9 \u2014 Hardness properties for forgings of material group I <\/td>\n<\/tr>\n
33<\/td>\nTable 10 \u2014 Hardness properties for forgings of material group II
Table 11 \u2014 Electrical properties at 20 C <\/td>\n<\/tr>\n
34<\/td>\nTable 12 \u2014 Tolerances for die forgings of material group I <\/td>\n<\/tr>\n
35<\/td>\nTable 13 \u2014 Tolerances for die forgings of material group II <\/td>\n<\/tr>\n
36<\/td>\nTable 14 \u2014 Tolerances for die forgings of material group III <\/td>\n<\/tr>\n
37<\/td>\nTable 15 \u2014 Tolerances for die forgings of material group I
Table 16 \u2014 Angular tolerances <\/td>\n<\/tr>\n
38<\/td>\nTable 17 \u2014 Tolerances of cored forgings <\/td>\n<\/tr>\n
39<\/td>\nTable 18 \u2014 Tolerances a and b for dimensions n and t
Table 19 \u2014 Flatness tolerance <\/td>\n<\/tr>\n
40<\/td>\nTable 20 \u2014 Sampling rate <\/td>\n<\/tr>\n
41<\/td>\nAnnex A (informative) Recommended guidelines for design
A.1 Introduction
A.2 General information <\/td>\n<\/tr>\n
42<\/td>\nFigure A.3 \u2014 Casting: No fibre flow
A.3 Guidelines for die forgings
A.3.1 Drafts
A.3.2 Web thicknesses <\/td>\n<\/tr>\n
43<\/td>\nTable A.1 \u2014 Web thicknesses
A.3.3 Side wall thicknesses
Table A.2 \u2014 Side wall thicknesses <\/td>\n<\/tr>\n
44<\/td>\nA.3.4 Rib design <\/td>\n<\/tr>\n
45<\/td>\nFigure A.13
A.3.5 Cores <\/td>\n<\/tr>\n
46<\/td>\nA.3.6 Flash <\/td>\n<\/tr>\n
47<\/td>\nFigure A.18
A.3.7 Transition radii <\/td>\n<\/tr>\n
48<\/td>\nTable A.4 \u2014 Minimum transition radii <\/td>\n<\/tr>\n
49<\/td>\nA.3.8 Clamping lengths and clamping areas for finish machining
Table A.5 \u2014 Clamping lengths for finish machining
A.3.9 Design for cross-sectional shapes <\/td>\n<\/tr>\n
50<\/td>\nA.3.10 Recommended machining allowances and total allowances
Figure A.34 <\/td>\n<\/tr>\n
51<\/td>\nTable A.6 \u2014 Machining allowances for drop or die forgings
Figure A.35 \u2014 Total allowance taking into account the deviations of flatness <\/td>\n<\/tr>\n
52<\/td>\nFigure A.36 \u2014 Total allowance in case of mismatch
A.4 Guidelines for hand forgings
A.4.1 General
A.4.2 General information <\/td>\n<\/tr>\n
53<\/td>\nA.4.3 Section changes and transitions
A.4.4 Recommended machining allowances <\/td>\n<\/tr>\n
54<\/td>\nTable A.7 \u2014 Machining allowance for hand forgings
A.4.5 Total allowances per side of forging
A.5 Guidelines for marking <\/td>\n<\/tr>\n
56<\/td>\nAnnex B (informative) Tensile properties <\/td>\n<\/tr>\n
57<\/td>\nTable B.1 \u2014 Tensile properties for forgings of material group I (for information only) <\/td>\n<\/tr>\n
58<\/td>\nTable B.2 \u2014 Tensile properties for forgings of material group II (for information only) <\/td>\n<\/tr>\n
59<\/td>\nTable B.3 \u2014 Tensile properties for forgings of material group III (for information only) <\/td>\n<\/tr>\n
60<\/td>\nAnnex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97\/23\/EC, Pressure Equipment Directive (PED)
Table ZA.1 \u2014 Correspondence between this European Standard and Directive 97\/23\/EC, Pressure Equipment Directive (PED) <\/td>\n<\/tr>\n
61<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Copper and copper alloys. Forgings<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2014<\/td>\n64<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":302253,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1130,2641],"product_tag":[],"class_list":{"0":"post-302248","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-77-150-30","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/302248","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/302253"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=302248"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=302248"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=302248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}