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AS 1444-2007
[Current]Wrought alloy steels - Standard, hardenability (H) series and hardened and tempered to designated mechanical properties
Specifies requirements for wrought alloy steels intended for general engineering purposes and is applicable to hot-rolled or cold-finished bars for machines, booms, billets and slabs for forgings, and forgings.
Published: 26/10/2007
Pages: 58
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Referenced documents
1.3 Definitions
1.4 Designation
1.4.1 General
1.4.2 Series designation
1.4.3 Modification symbols
1.4.4 Designations for tensile strength ranges of hardened and tempered material
1.4.5 Surface condition
1.4.6 Austenitic grain size
1.5 Condition of steel on delivery
1.6 Materials
1.6.1 Chemical composition
1.6.1.1 General
1.6.1.2 Cast analysis
1.6.1.3 Residual elements
1.6.1.4 Product analysis
1.6.2 Hardness requirements
1.6.3 Tensile test requirements
1.6.4 Hardenability test requirements
1.6.5 Austenitic grain size requirements
1.7 Freedom from defects
1.7.1 General
1.7.2 Hot-rolled bars
1.7.3 Cold-finished bars
1.8 Surface dressing
1.8.1 Hot-rolled bars
1.8.2 Blooms, billets and slabs
1.8.2.1 General
1.8.2.2 Depth of gouge
1.8.2.3 Width of gouge
1.9 Rounding of test result values
1.9.1 General
1.9.2 Tensile test results
1.10 Marking
2 Steels supplied to chemical composition only
2.1 Scope
2.2 Chemical composition
3 Steels supplied to chemical composition and hardenability requirements
3.1 Scope
3.2 Chemical composition
3.3 Hardenability test
3.3.1 General
3.3.2 Specification of hardenability limits
3.4 Hardenability requirements
3.4.1 General
3.4.2 Grade AS 1444/X1320H
3.4.2.1 Chemical composition, percent
3.4.2.2 Heat-treatment temperatures
3.4.3 Grade AS 1444/X3312H
3.4.3.1 Chemical composition, percent
3.4.3.2 Heat-treatment temperatures
3.4.4 Grade AS 1444/4130H
3.4.4.1 Chemical composition, percent
3.4.4.2 Heat-treatment temperatures
3.4.5 Grade AS 1444/4140H
3.4.5.1 Chemical composition, percent
3.4.5.2 Heat-treatment temperatures
3.4.6 Grade AS 1444/4150H
3.4.6.1 Chemical composition, percent
3.4.6.2 Heat-treatment temperatures
3.4.7 Grade AS 1444/X4317H
3.4.7.1 Chemical composition, percent
3.4.7.2 Heat-treatment temperatures
3.4.8 Grade AS 1444/4340H
3.4.8.1 Chemical composition, percent
3.4.8.2 Heat-treatment temperatures
3.4.9 Grade AS 1444/4620H
3.4.9.1 Chemical composition, percent
3.4.9.2 Heat-treatment temperatures
3.4.10 Grade AS 1444/5120H
3.4.10.1 Chemical composition, percent
3.4.10.2 Heat-treatment temperatures
3.4.11 Grade AS 1444/5132H
3.4.11.1 Chemical composition, percent
3.4.11.2 Heat-treatment temperatures
3.4.12 Grade AS 1444/5145H
3.4.12.1 Chemical composition, percent
3.4.12.2 Heat-treatment temperatures
3.4.13 Grade AS 1444/6150H
3.4.13.1 Chemical composition, percent
3.4.13.2 Heat-treatment temperatures
3.4.14 Grade AS 1444/8115H
3.4.14.1 Chemical composition, percent
3.4.14.2 Heat-treatment temperatures
3.4.15 Grade AS 1444/8617H
3.4.15.1 Chemical composition, percent
3.4.15.2 Heat-treatment temperatures
3.4.16 Grade AS 1444/8620H
3.4.16.1 Chemical composition, percent
3.4.16.2 Heat-treatment temperatures
3.4.17 Grade AS 1444/86B30H
3.4.17.1 Chemical composition, percent
3.4.17.2 Heat-treatment temperatures
3.4.18 Grade AS 1444/8660H
3.4.18.1 Chemical composition, percent
3.4.18.2 Heat-treatment temperatures
3.4.19 Grade AS 1444/8740H
3.4.19.1 Chemical composition, percent
3.4.19.2 Heat-treatment temperatures
3.4.20 Grade AS 1444/9260H
3.4.20.1 Chemical composition, percent
3.4.20.2 Heat-treatment temperatures
3.4.21 Grade AS 1444/9261H
3.4.21.1 Chemical composition, percent
3.4.21.2 Heat-treatment temperatures
3.4.22 Grade AS 1444/X9315H
3.4.22.1 Chemical composition, percent
3.4.22.2 Heat-treatment temperatures
4 Steels supplied to chemical composition and mechanical property requirements
4.1 Scope
4.2 Chemical composition
4.3 Heat treatment
4.3.1 Hardening and tempering
4.3.2 Nitriding
4.4 Mechanical properties
4.5 Methods for mechanical testing
4.5.1 Form of test sample
4.5.2 Preparation of test specimens
4.5.2.1 Bars and billets for forgings, and bars for machining not supplied in the finally heat-treated condition
4.5.2.2 Bars for machining, supplied in the finally heat-treated condition
4.5.2.3 Heat treatment of test specimens
4.5.3 Preparation of test pieces
4.5.3.1 General
4.5.3.2 Orientation of test pieces
4.5.3.3 Tensile test pieces
4.5.3.4 Impact test pieces
4.5.3.5 Hardness test piece
4.5.4 Tensile test
4.5.5 Hardness test
4.5.6 Impact test
4.6 Sampling
5 Manufacturing tolerances
5.1 Scope
5.2 Dimensional tolerances for hot-rolled bars
5.3 Dimensional tolerances for cold-finished bars
Appendix A
A1 General
A2 Information to be supplied by the purchaser
Appendix B
B1 Scope
B2 Statistical sampling
B3 Product certification
B4 Supplier’s quality management system
B5 Other means of assessment
Appendix C
C1 Scope
C2 Ruling section
Appendix D
Appendix E
Amendment control sheet
AS 1444—2007
Amendment no. 1 (2008)
Correction
Cited references in this standard
[Current]
Methods for the analysis of iron and steel, Part 1: Sampling iron and steel for chemical analysis
[Current]
Metallic materials — Brinell hardness test, Method 1: Test method (ISO 6506-1:2005, MOD)
[Current]
Metallic materials — Vickers hardness test, Method 1: Test method (ISO 6507-1:1997, MOD)
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