AS 1830-1986

1 - AS 1830-1986 IRON CASTINGS - GREY CAST IRON
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE.
6 - 1.2 REFERENCED DOCUMENTS.
6 - 1.3 FREEDOM FROM DEFECTS.
6 - 1.4 CASTING DIMENSIONS.
6 - 1.5 INTERPRETATION OF SPECIFIED LIMITING VALUES.
7 - SECTION 2. T-SERIES GREY IRON CASTINGS
7 - 2.1 SCOPE OF SECTION.
7 - 2.2 DESIGNATION.
7 - 2.3 TENSILE STRENGTH.
7 - 2.4 PROVISION AND PREPARATION OF TENSILE TEST BARS.
7 - 2.4.1 Casting of test bars.
7 - 2.4.2 Size of test bars.
7 - 2.5 TENSILE TEST.
7 - 2.5.1 General.
7 - 2.5.2 Tensile test piece.
7 - 2.5.3 Defective test piece.
7 - 2.6 RETESTS.
9 - SECTION 3. H-SERIES GREY IRON CASTINGS
9 - 3.1 SCOPE OF SECTION.
9 - 3.2 DESIGNATION.
9 - 3.3 HARDNESS.
9 - 3.4 HARDNESS TEST.
9 - 3.5 MICROSTRUCTURE.
10 - APPENDIX A - PURCHASING GUIDELINES
10 - A1 INTRODUCTION.
10 - A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER.
10 - A3 PATTERNS, DRAWINGS AND SAMPLES OF THE CASTING.
10 - A3.1 New patterns.
10 - A3.2 Existing patterns and equipment.
11 - A3.3 Sample casting and/or drawing.
11 - A4 IDENTIFICATION.
11 - A5 DRESSING AND FETTLING.
11 - A6 RECTIFICATION OF DEFECTS.
11 - A7 TEST REQUIREMENTS.
11 - A7.1 Casting of test bars.
11 - A7.2 Size of test bars.
12 - A7.3 Mechanical tests on standard test bars.
12 - A7.4 Number of tensile tests.
12 - A7.5 Hardness testing.
12 - A7.6 Retests.
12 - A7.7 Independent tests.
12 - A8 CERTIFICATES.
12 - A8.1 Certificates of compliance.
12 - A8.2 Test certificates.
13 - A9 INSPECTION.
13 - A10 SPECIAL OR SUPPLEMENTARY REQUIREMENTS.
13 - A10.1 Heat treatment.
13 - A10.2 Limits of chemical elements.
13 - A10.3 Microstructure.
14 - APPENDIX B - APPROXIMATE VARIATION OF STRENGTH
15 - APPENDIX C - TYPICAL PROPERTIES OF FLAKE GRAPHITE GREY CAST IRON (From BS 1452)
17 - APPENDIX D - FORM, DISTRIBUTION AND SIZE OF GRAPHITE FLAKES
17 - D1 GENERAL.
17 - D2 REFERENCE DIAGRAM FOR GRAPHITE FORM I
18 - D3 REFERENCE DIAGRAMS FOR THE DISTRIBUTION OF GRAPHITE (FORM I)
20 - D4 REFERENCE DIAGRAMS FOR GRAPHITE SIZE (FORM I) AND DISTRIBUTION A

Specifies requirements for flake graphite grey iron castings produced in sand or ceramic moulds, supplied to tensile strength requirements when intended for general engineering purposes and for applications where hardness, microstructure and machinability are the prime requirements.

This standard specifies requirements for flake graphite grey iron castings, produced in sand or ceramic moulds, as follows:T-series-seven grades of castings for general engineering, primarily to tensile strength requirements (see Section 2).H-series-four grades of castings for applications where hardness, microstructure and machinability are the prime requirements, e.g. the automotive and appliance industries (see Section 3).NOTES:1. Typical properties of flake graphite grey cast iron are given in Appendix C.2. Guidelines to purchasers on requirements that must be specified by the purchaser and those that must be agreed at the time of enquiry and/or order are given in Appendix A.

Under Revision See DR 02085 CP