AS 2027-1985

1 - AS 2027-1985 IRON CASTINGS - ABRASION-RESISTANT WHITE IRON
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE.
5 - 2 REFERENCED DOCUMENTS.
5 - 3 DESIGNATION.
5 - 3.1 General.
5 - 3.2 White iron specified by hardness.
5 - 3.3 Nickel-chromium types.
5 - 3.4 High chromium types.
5 - 4 DEFINITION.
5 - 5 CHEMICAL COMPOSITION.
5 - 5.1 General.
6 - 5.2 Analysis sample.
6 - 6 FREEDOM FROM DEFECTS.
6 - 7 CASTING DIMENSIONS.
6 - 8 MICROSTRUCTURAL EXAMINATION.
6 - 9 HARDNESS.
6 - 9.1 Provision and preparation of test sample.
6 - 9.2 Hardness test.
6 - 9.3 White iron specified by hardness.
6 - 9.4 Nickel-chromium types.
6 - 9.5 High chromium types.
6 - 10 INTERPRETATION OF SPECIFIED LIMITING VALUES
7 - APPENDIX A - PURCHASING GUIDELINES
7 - A1 INTRODUCTION.
7 - A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER.
7 - A3 PATTERNS, DRAWINGS AND SAMPLES OF THE CASTING.
7 - A3.1 New patterns.
7 - A3.2 Existing patterns and equipment.
8 - A3.3 Sample casting and/or drawing.
8 - A4 IDENTIFICATION.
8 - A5 DRESSING AND FETTLING.
8 - A6 RECTIFICATION OF DEFECTS.
8 - A7 DESIGNATION.
9 - A8 MICROSTRUCTURE.
9 - A8.1 Microstructural samples.
9 - A8.2 Chemical composition.
9 - A9 MECHANICAL TESTS.
9 - A9.1 Provision of test samples.
9 - A9.2 Hardness.
9 - A9.3 Retests.
9 - A9.4 Independent tests.
9 - A10 CERTIFICATES.
9 - A10.1 Certificates of compliance.
9 - A10.2 Test certificates.
11 - APPENDIX B - HEAT TREATMENT AND MICROSTRUCTURE OF ABRASION-RESISTANT WHITE IRON CASTINGS
11 - B1 WHITE IRON SPECIFIED BY HARDNESS.
11 - B1.1 Heat treatment.
11 - B1.2 Microstructure.
11 - B2 NICKEL-CHROMIUM TYPES.
11 - B2.1 Heat treatment.
11 - B2.2 Microstructure
11 - B3 HIGH CHROMIUM TYPES.
11 - B3.1 Heat treatment.
12 - B3.2 Microstructure.
13 - APPENDIX C - NICKEL-CHROMIUM TYPES-RELATIONSHIP BETWEEN SECTION SIZE AND CHEMICAL COMPOSITION*
14 - APPENDIX D - EXAMPLES OF INTERPRETATION OF SPECIFIED LIMITING VALUES IN ACCORDANCE WITH THE ROUNDING METHOD

Specifies requirements for three types of casting, viz. white iron specified by hardness, nickel-chromium types and high chromium types for use in the power, cement, mining, quarrying and other appropriate industries. Appendices provide guidelines on purchasing castings to this Standard, and give information on recommended heat treatment.

This standard specifies requirements for the following types of abrasion-resistant white iron castings for use in the power, cement, mining, quarrying and other appropriate industries:(a) White iron specified by hardness.(b) Nickel-chromium types.(c) High chromium types.NOTES:1. No provision is made for abrasion testing (see Preface).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 02394