AS 1548-1995

1 - AS 1548-1995 STEEL PLATES FOR PRESSURE EQUIPMENT
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
6 - 3 DEFINITIONS
6 - 3.1 Cast analysis
6 - 3.2 Edge conditions
6 - 3.2.1 Trimmed edge
7 - 3.2.2 Untrimmed edge
7 - 3.3 Longitudinal direction
7 - 3.4 Plate
7 - 3.5 Plate as-produced
7 - 3.6 Product analysis
7 - 3.7 `Shall' and ‘should’
7 - 3.8 Testing
7 - 3.9 Test piece
7 - 3.10 Test sample
7 - 3.11 Test specimen
7 - 3.12 Thermomechanical controlled rolling (TMCR)
7 - 3.13 Transverse direction
7 - 4 DESIGNATION
8 - 5 HEAT TREATMENT
8 - 5.1 ‘N’ designation plate
8 - 5.2 `R' designation plate
9 - 5.3 `A' designation plate
9 - 5.4 `T' designation plate
9 - 6 CHEMICAL COMPOSITION
9 - 6.1 General
9 - 6.2 Sampling and testing
9 - 6.3 Residual elements
9 - 7 STEELMAKING PROCESS
9 - 8 MANUFACTURING TOLERANCES
9 - 9 FREEDOM FROM DEFECTS
9 - 9.1 General
11 - 9.2 Removal of surface defects
12 - 10 FREQUENCY OF SAMPLING
12 - 10.1 Room temperature tensile test
12 - 10.1.1 Continuous mill product
12 - 10.1.2 Reversing mill product
12 - 10.2 Charpy V-notch impact test
12 - 10.3 Elevated temperature tensile test
12 - 10.4 Through-thickness tensile test
12 - 11 SELECTION OF TEST SAMPLES
12 - 12 POSITION OF TEST SPECIMEN
12 - 13 ORIENTATION OF TEST PIECES
12 - 13.1 Room temperature tensile test piece
12 - 13.2 Charpy V-notch impact test pieces
12 - 13.3 Elevated temperature tensile test piece
12 - 13.4 Through-thickness tensile test pieces
13 - 14 PREPARATION OF TEST PIECES FOR MECHANICAL TESTING
13 - 14.1 General
13 - 14.2 Tensile test piece
13 - 14.3 Impact test piece
14 - 14.4 Elevated temperature test piece
14 - 14.5 Through-thickness tensile test
14 - 15 STRESS-RELIEVING TREATMENT
14 - 16 TESTING PROCEDURES
14 - 16.1 Tensile test
14 - 16.2 Charpy V-notch impact test
14 - 16.3 Elevated temperature tensile test
14 - 16.4 Through-thickness tensile test
15 - 17 MECHANICAL TEST REQUIREMENTS
15 - 17.1 Room temperature
15 - 17.2 Charpy V-notch impact tests
15 - 17.3 Elevated temperature tensile test
15 - 17.4 Through-thickness tensile test
15 - 17.5 Retests
15 - 18 RETESTS
15 - 18.1 Room temperature tensile tests
16 - 18.2 Charpy V-notch impact tests
16 - 18.3 Elevated temperature tensile test
16 - 18.4 Through-thickness tensile test
17 - 19 IDENTIFICATION
17 - 20 TEST CERTIFICATE
18 - 21 INTERPRETATION OF SPECIFIED LIMITING VALUES
18 - 21.1 General
18 - 21.2 Tensile properties
20 - APPENDIX A - PURCHASING GUIDELINES
20 - A1 INFORMATION TO BE SUPPLIED BY THE PURCHASER
20 - A2 ULTRASONIC TESTING
21 - A3 INDEPENDENT TESTS
21 - A4 INSPECTION
21 - A5 ELEVATED TEMPERATURE PROPERTIES
21 - A6 ADDITIONAL TESTS
22 - APPENDIX B - INFLUENCE OF FABRICATION AND HEAT TREATMENT ON MECHANICAL PROPERTIES
22 - B1 INFLUENCE OF HOT-FORMING ON THE MECHANICAL PROPERTIES
22 - B1.1 All ‘A’ designations
22 - B1.2 All `R' designations
22 - B1.3 All `N' designations
23 - B1.4 All `T' designations
23 - B2 INFLUENCE OF COLD-FORMING ON MECHANICAL PROPERTIES
23 - B3 INFLUENCE OF HOT-FORMING OR COLD-FORMING ON CREEP RUPTURE PROPERTIES
24 - APPENDIX C - INTERCHANGEABILITY OF HEAT TREATMENT DESIGNATIONS AND STRENGTH GRADES OF TYPE 7 STEEL
24 - C1 GENERAL
24 - C2 INTERCHANGEABILITY OF `R' DESIGNATION FOR 'A' DESIGNATION PLATE
25 - C3 USE OF `A' DESIGNATION PLATE WITHOUT NORMALIZING
25 - C4 USE OF 7-460 PLATE IN LIEU OF 7-430 OR 7-490 PLATES IN CURRENTLY APPROVED DESIGNS AND WELDING PROCEDURES
26 - APPENDIX D - CREEP RUPTURE PROPERTIES

Specifies the treatment and tests for the Type 7-490 grade steel. It sets out also the changeability between Types 7-490 and 7-460 grades of steel with the exception of a slightly higher carbon equivalent used on the Type 7-490 grade to achieve a higher strength.

This Standard specifies requirements for hot-rolled silicon-aluminium fully killed carbon-manganese steel plates to a maximum thickness of 150 mm for use in the construction of boilers and pressure vessels.NOTE: Guidelines to purchasers on requirements that should be specified by the purchaser and those that should be agreed to at the time of enquiry or order, or both, are given in Appendix A.

First published as part of AS E6-1925.
Revised and redesignated in part as AS B58-1937.
Reprinted and redated AS B58-1953.
Third edition 1958.
AS E6 withdrawn 1958.
AS B58-1958 revised and redesignated AS B250-1968.
Revised and redesignated AS 1548-1974.
Second edition 1981.
Third edition 1988.
Fourth edition 1995.