AS 1447-1991

1 - AS 1447-1991 HOT-ROLLED SPRING STEELS
4 - PREFACE
4 - CONTENTS
5 - SECTION 1 SCOPE AND GENERAL
5 - 1.1 SCOPE
5 - 1.2 REFERENCED DOCUMENTS
5 - 1.3 DEFINITIONS
5 - 1.3.1 Bar
5 - 1.3.2 Hardenability
5 - 1.3.3 Out-of-round
5 - 1.3.4 Out-of-square
5 - 1.4 DESIGNATION OF GRADE
5 - 1.4.1 General
6 - 1.4.2 Series designation
6 - 1.5 STEELMAKING PROCESS
6 - 1.6 CHEMICAL COMPOSITION
6 - 1.6.1 General
6 - 1.6.2 Cast analysis
6 - 1.6.3 Residual elements
6 - 1.6.4 Product analysis
6 - 1.7 FREEDOM FROM DEFECTS
6 - 1.8 AUSTENITE GRAIN SIZE
6 - 1.9 HARDENABILITY TEST
6 - 1.9.1 General
6 - 1.9.2 Requirements
6 - 1.10 DIMENSIONAL TOLERANCES
7 - 1.11 ROUNDING OF TEST RESULT NUMBERS
7 - 1.12 MARKING
8 - SECTION 2 STEELS SUPPLIED TO CHEMICAL COMPOSITION AND HARDENABILITY REQUIREMENTS
8 - 2.1 SCOPE OF SECTION
8 - 2.2 AUSTENITE GRAIN SIZE
8 - 2.3 HARDENABILITY REQUIREMENTS
8 - 2.3.1 General
8 - 2.3.2 Specification of hardenability limits
9 - 2.4 GRADE REQUIREMENTS
9 - 2.4.1 Grade AS 1447/ K5160HS
10 - 2.4.2 Grade AS 1447/ K51B60HS
11 - 2.4.3 Grade AS 1447/ K8660HIS
12 - SECTION 3 DIMENSIONAL TOLERANCE REQUIREMENTS
12 - 3.1 SCOPE OF SECTION
12 - 3.2 DIMENSIONAL TOLERANCES
14 - APPENDIX A - PURCHASING GUIDELINES
14 - A1 GENERAL
14 - A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER

Specifies requirements for hot-rolled carbon, carbon-chromium, nickel-chromium-molybdenum and silicon-manganese spring steels, including three hardenability grades, in the as-rolled, annealed or normalized condition.

This Standard specifies requirements for hot-rolled carbon, carbon-chromium, nickel-chromium-molybdenum and silicon-manganese spring steels which are in either the as-rolled, annealed or normalized condition. It specifies chemical composition and manufacturing tolerance requirements for all grades and end-quench hardenability requirements for hardenability grades. This Standard permits the addition of boron and micro-alloying elements for the achievement of special properties.NOTE: Advice and recommendations on information to be supplied by the purchaser at the time of enquiry and order are contained in the purchasing guidelines set out in Appendix A.

AS 1447-1991 first published in part as AS G29-1971.
AS G29-1971 revised and redesignated AS 1447-1974.
AS 1941 first published 1976.
AS 1447-1974 and AS 1941-1976 revised and amalgamated as AS 1447-1981.
AS 1941 withdrawn September 1981.
Third edition AS 1447-1991.