1 - AS 2074-1982 STEEL CASTINGS
4 - PREFACE
5 - CONTENTS
7 - SECTION 1. SCOPE AND GENERAL
7 - 1.1 SCOPE.
7 - 1.2 APPLICATION.
7 - 1.3 REFERENCED DOCUMENTS.
7 - 1.4 DESIGNATION OF GRADE.
8 - 1.5 DEFINITIONS.
8 - 1.5.1 Certified material for elevated temperature properties
8 - 1.5.2 Elevated temperature tested material
8 - 1.5.3 Mass effect
8 - 1.5.4 Ruling section
8 - 1.5.5 Test bar
8 - 1.5.6 Test piece
8 - 1.6 CHEMICAL COMPOSITION.
8 - 1.6.1 General.
8 - 1.6.2 Residual Elements.
8 - 1.6.3 Cast Analysis.
8 - 1.7 FETTLING AND DRESSING.
8 - 1.8 FREEDOM FROM DEFECTS.
8 - 1.9 HEAT TREATMENT.
8 - 1.9.1 General.
8 - 1.9.2 Annealing Lugs
8 - 1.10 MASS EFFECT.
8 - 1.11 MECHANICAL PROPERTIES.
8 - 1.12 PROVISION AND PREPARATION OF TEST BARS.
8 - 1.12.1 General.
8 - 1.12.2 Heat Treatment of Separate Test Bars.
9 - 1.12.3 Heat Treatment of Attached Test Bars.
9 - 1.13 PREPARATION OF TEST PIECES.
9 - 1.13.1 General.
9 - 1.13.2 Tensile Test Piece.
9 - 1.13.3 Elevated Temperature Tensile Test Piece.
9 - 1.13.4 Izod Impact Test Piece.
9 - 1.13.5 Charpy V-notch Impact Test Piece.
9 - 1.13.6 Intergranular Corrosion Test Piece.
9 - 1.14 TEST REQUIREMENTS.
9 - 1.14.1 Tensile Test.
9 - 1.14.2 Elevated Temperature Tensile Test.
9 - 1.14.3 Izod Impact Test.
9 - 1.14.4 Charpy V-notch Impact Test.
9 - 1.14.5 Hardness Tests.
9 - 1.14.6 Magnetic Property Tests.
9 - 1.14.7 Intergranular Corrosion Test.
9 - 1.15 RETESTS.
9 - 1.15.1 General.
9 - 1.15.2 Failure of Mechanical Tests.
10 - 1.15.3 Failure of Low Temperature Impact Test.
10 - 1.15.4 Re-heat Treatment.
10 - 1.15.5 Acceptance.
10 - 1.16 TEST CERTIFICATE.
10 - 1.17 RECTIFICATION OF CASTINGS.
10 - 1.18 ROUNDING OF RESULTS OBTAINED BY INSPECTION AND TESTING.
10 - 1.18.1 General.
10 - 1.18.2 Tensile Properties.
11 - SECTION 2. REQUIREMENTS FOR CARBON STEEL CASTINGS
11 - 2.1 CARBONSTEEL CASTINGSFOR CASE HARDENING- GRADE AS 2074/C1.
11 - 2.1.1 Chemical Composition.
11 - 2.1.2 Heat Treatment.
11 - 2.1.3 Mechanical Properties.
12 - 2.2 CARBON STEEL CASTINGS WITH HIGH MAGNETIC PERMEABILITY- GRADE AS 2074/ C2.
12 - 2.2.1 Chemical Composition.
12 - 2.2.2 Heat Treatment.
12 - 2.2.3 Mechanical Properties.
12 - 2.2.4 Magnetic Properties.
13 - 2.3 CARBON STEEL CASTINGS FOR GENERAL PURPOSES -GRADES AS 2074/ C3, C4, C5.
13 - 2.3.1 Chemical Composition.
13 - 2.3.2 Heat Treatment.
13 - 2.3.3 Mechanical Properties.
14 - 2.4 CARBON STEEL CASTINGS FOR RESISTANCE TO WEAR AND SUITABLE FOR SURFACE HARDENING- GRADE AS 2074/ C6.
14 - 2.4.1 Chemical Composition.
14 - 2.4.2 Heat Treatment.
14 - 2.4.3 Mechanical Properties.
15 - 2.5 CARBON STEEL CASTINGS FOR PRESSURE PURPOSES -GRADE AS 2074/ C7A.
15 - 2.5.1 Chemical Composition.
15 - 2.5.2 Heat Treatment.
15 - 2.5.3 Mechanical Properties at Room Temperature.
15 - 2.5.4 Mechanical Properties at Elevated Temperature.
16 - 2.5.5 Impact Properties at Low Temperature.
17 - SECTION 3. REQUIREMENTS FOR LOW ALLOY STEEL CASTINGS
17 - 3.1 1.5% MANGANESE STEEL CASTINGS -GRADES AS 2074/L1A, L1B.
17 - 3.1.1 Chemical Composition.
17 - 3.1.2 Heat Treatment.
17 - 3.1.3 Mechanical Properties.
17 - 3.1.4 Brinell Hardness of Castings.
18 - 3.2 1% CHROMIUM STEEL FOR RESISTANCE TO ABRASION -GRADES AS 2074/ L2A, L2B.
18 - 3.2.1 Chemical Composition.
18 - 3.2.2 Heat Treatment.
18 - 3.2.3 Brinell Hardness of Castings.
19 - 3.3 FERRITIC STEEL FOR USE AT LOW TEMPERATURE-GRADE AS 2074/ L3A.
19 - 3.3.1 Chemical Composition.
19 - 3.3.2 Heat Treatment.
19 - 3.3.3 Mechanical Properties at Room Temperature.
19 - 3.3.4 Impact Properties at Low Temperature.
20 - 3.4 3% NICKEL STEEL FOR CASE HARDENING- GRADE AS 2074/L4A.
20 - 3.4.1 Chemical Composition.
20 - 3.4.2 Heat Treatment.
20 - 3.4.3 Mechanical Properties.
21 - 3.5 LOW ALLOY STEEL FOR USE AT ELEVATED TEMPERATURES -GRADES AS 2074/ L5A, L5B, L5C, L5D, L5E, L5F, L5G, L5H.
21 - 3.5.1 Chemical Composition.
22 - 3.5.2 Heat Treatment.
22 - 3.5.3 Mechanical Properties at Room Temperature.
22 - 3.5.4 Mechanical Properties at Elevated Temperature.
23 - 3.5.5 Impact Properties at Low Temperature.
24 - 3.6 ALLOY STEEL FOR HIGHER TENSILE STRENGTH- GRADES AS 2074/ L6, L6A, L6B, L6C.
24 - 3.6.1 Chemical Composition.
24 - 3.6.2 Heat Treatment.
24 - 3.6.3 Mechanical Properties.
24 - 3.6.4 Brinell Hardness of Castings.
24 - 3.6.5 Reduction of Area.
25 - SECTION 4. REQUIREMENTS FOR HIGH ALLOY STEEL CASTINGS
25 - 4.1 AUSTENITIC MANGANESE STEELCASTINGS -GRADES AS 2074/ H1A, H1B.
25 - 4.1.1 Chemical Composition.
25 - 4.1.2 Heat Treatment.
26 - 4.2 9% CHROMIUM- MOLYBDENUM STEEL CASTINGS -GRADE AS 2074/ H2A.
26 - 4.2.1 Chemical Composition.
26 - 4.2.2 Heat Treatment.
26 - 4.2.3 Mechanical Properties.
26 - 4.2.4 Brinell Hardness of Castings.
27 - 4.3 13% CHROMIUM STEEL CASTINGS FOR RESISTANCE TO CORROSION- GRADES AS 2074/ H3A, H3B, H3C.
27 - 4.3.1 Chemical Composition.
27 - 4.3.2 Heat Treatment.
27 - 4.3.3 Mechanical Properties.
27 - 4.3.4 Brinell Hardness of Castings.
28 - 4.4 28% CHROMIUM STEEL CASTINGS -GRADES AS 2074/H4A, H4B.
28 - 4.4.1 Chemical Composition.
28 - 4.4.2 Heat Treatment.
29 - 4.5 AUSTENITIC CHROMIUM-NICKEL STEEL CASTINGS FOR RESISTANCE TO CORROSION- GRADES AS 2074/ H5A, H5B, H5C.
29 - 4.5.1 Chemical Composition.
29 - 4.5.2 Heat Treatment.
29 - 4.5.3 Mechanical Properties.
29 - 4.5.4 Impact Properties at Low Temperature.
29 - 4.5.5 Non-magnetic Castings.
29 - 4.5.6 Intergranular Corrosion Test.
30 - 4.6 AUSTENITIC CHROMIUM-NICKEL-MOLYBDENUMSTEEL CASTINGS FOR RESISTANCE TO CORROSION -GRADES AS 2074/ H6A, H6B, H6C.
30 - 4.6.1 Chemical Composition.
30 - 4.6.2 Heat Treatment.
30 - 4.6.3 Mechanical Properties.
30 - 4.6.4 Non-magnetic Castings.
30 - 4.6.5 Intergranular Corrosion Test.
31 - 4.7 PRECIPITATION HARDENING STEEL CASTINGS FOR RESISTANCE TO CORROSION- GRADES AS 2074/ H7A, H7B.
31 - 4.7.1 Chemical Composition.
31 - 4.7.2 Heat Treatment.
31 - 4.7.3 Mechanical Properties.
31 - 4.7.4 Brinell Hardness of Castings.
33 - 4.8 ALLOY STEEL CASTINGS FOR USE AT HIGH TEMPERATURE - GRADES AS 2074/ H8A, H8B, H8C, H8E, H8F, H8G, H8H, H8J.
33 - 4.8.1 Chemical Composition.
33 - 4.8.2 Heat Treatment.
33 - 4.8.3 Mechanical Properties.
33 - 4.8.4 Non-magnetic Castings.
33 - 4.9 AUSTENITIC CHROMIUM-NICKEL- MOLYBDENUM- COPPER STEEL CASTINGS FOR RESISTANCE TO CORROSION -GRADE AS 2074/ H9A.
33 - 4.9.1 Chemical Composition.
33 - 4.9.2 Heat Treatment.
34 - APPENDIX A - PURCHASING GUIDELINES (see Preface and Appendix B)
34 - A1 INTRODUCTION.
34 - A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
34 - A3 PATTERNS, DRAWINGS, AND SAMPLES OF THE CASTING.
34 - A3.1 New Patterns.
34 - A3.2 Existing Patterns and Equipment.
35 - A3.3 Colouring and Marking.
35 - A3.4 Sample Casting or Drawing.
35 - A4 IDENTIFICATION.
35 - A5 DRESSING AND FETTLING.
35 - A6 DEFECTS IN CASTINGS.
35 - A6.1 General.
35 - A6.2 Rectification of Defects.
35 - A7 MECHANICAL PROPERTY REQUIREMENTS.
35 - A7.1 General.
35 - A7.2 Tensile Properties.
35 - A7.3 Izod Impact Test.
35 - A7.4 Attached Test Bars.
35 - A7.5 Free-machining Grades.
35 - A8 TEST BARS.
35 - A8.1 General.
36 - A8.2 Provision of Test Bars.
36 - A8.3 Heat Treatment of Test Bars.
36 - A9 TEST REQUIREMENTS.
36 - A9.1 Tensile Test.
36 - A9.2 Retests.
36 - A9.3 Independent Tests.
36 - A10 OPTIONAL TEST REQUIREMENTS.
36 - A10.1 Hardness Test.
36 - A10.2 Charpy V-notch Impact Test.
36 - A10.3 Magnetic Requirements.
36 - A10.4 Intergranular Corrosion Test.
36 - A10.5 Non-destructive Inspection.
37 - A10.6 Pressure Tests.
37 - A11 SPECIAL OR SUPPLEMENTARY REQUIREMENTS.
37 - A11.1 Heat Treatment.
37 - A11.2 Limits of Chemical Elements.
37 - A11.3 Grades AS 2074/L6A and L6C.
37 - A11.4 Grades AS 2074/C1 and L4A.
37 - A11.5 Special Finishing.
37 - A11.6 Special Handling Requirements.
37 - A12 CERTIFICATES.
37 - A12.1 General.
37 - A12.2 Certificates of Compliance.
37 - A12.3 Test Certificates.
37 - A13 INSPECTION.
38 - APPENDIX B - STEEL CASTINGS -SELECTION OF GRADES FOR SPECIFIC APPLICATIONS
41 - APPENDIX C - ROUNDING OF RESULTS OBTAINED BY INSPECTION AND TESTING
41 - C1 ROUNDING OFF.
41 - C2 MEANING TO BE ATTACHED TO NUMERICAL VALUES OF MAXIMA AND MINIMA
42 - C3 REFERENCES.