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AS 4291.1:2015
[Current]Mechanical properties of fasteners made of carbon steel and alloy steel, Part 1: Bolts, screws and studs
Adopts ISO 898-1:2013, which specifies mechanical and physical properties of bolts, screws and studs made of carbon steel and alloy steel when tested at an ambient temperature range of 10 °C to 35 °C.
Published: 26/08/2015
Pages: 57
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Designation system for property classes
6 Materials
7 Mechanical and physical properties
8 Applicability of test methods
8.1 General
8.2 Loadability of fasteners
8.2.1 Fasteners with full loadability
8.2.2 Fasteners which, due to their geometry, have reduced loadability
8.3 Manufacturer's test/inspection
8.4 Supplier's test/inspection
8.5 Purchaser's test/inspection
8.6 Feasible tests for groups of fasteners and machined test pieces
8.6.1 General
8.6.2 Applicability
8.6.3 Delivery of test results
9 Test methods
9.1 Tensile test under wedge loading of finished bolts and screws (excluding studs)
9.1.1 General
9.1.2 Applicability
9.1.3 Apparatus
9.1.4 Testing device
9.1.5 Test procedure
9.1.6 Test results
9.1.6.1 Determination of tensile strength, Rm
9.1.6.1.1 Method
9.1.6.1.2 Requirements
9.1.6.2 Determination of integrity of transition section between head and unthreaded shank/thread — Requirements
9.2 Tensile test for finished bolts, screws and studs for determination of tensile strength, Rm
9.2.1 General
9.2.2 Applicability
9.2.3 Apparatus
9.2.4 Testing device
9.2.5 Test procedure
9.2.6 Test results
9.2.6.1 Method
9.2.6.2 Requirements
9.3 Tensile test for full-size bolts, screws and studs for determination of elongation after fracture, Af, and stress at 0,0048d non-proportional elongation, Rpf
9.3.1 General
9.3.2 Applicability
9.3.3 Apparatus
9.3.4 Testing device
9.3.5 Test procedure
9.3.6 Test results
9.3.6.1 Determination of the elongation after fracture, Af
9.3.6.1.1 Method
9.3.6.1.2 Requirements
9.3.6.2 Determination of the stress at 0,0048d non-proportional elongation, Rpf
9.3.6.2.1 Method
9.3.6.2.2 Requirements
9.4 Tensile test for bolts and screws with reduced loadability due to head design
9.4.1 General
9.4.2 Applicability
9.4.3 Apparatus
9.4.4 Testing device
9.4.5 Test procedure
9.4.6 Test results — Requirements
9.5 Tensile test for fasteners with waisted shank
9.5.1 General
9.5.2 Applicability
9.5.3 Apparatus
9.5.4 Testing device
9.5.5 Test procedure
9.5.6 Test results
9.5.6.1 Method
9.5.6.2 Requirements
9.6 Proof load test for finished bolts, screws and studs
9.6.1 General
9.6.2 Applicability
9.6.3 Apparatus
9.6.4 Testing device
9.6.5 Test procedure
9.6.6 Test results — Requirements
9.7 Tensile test for machined test pieces
9.7.1 General
9.7.2 Applicability
9.7.3 Apparatus
9.7.4 Testing device
9.7.5 Machined test pieces
9.7.6 Test procedure
9.7.7 Test results
9.7.7.1 Method
9.7.7.2 Requirements
9.8 Head soundness test
9.8.1 General
9.8.2 Applicability
9.8.3 Testing device
9.8.4 Test procedure
9.8.5 Test results — Requirements
9.9 Hardness test
9.9.1 General
9.9.2 Applicability
9.9.3 Test methods
9.9.4 Test procedure
9.9.4.1 General
9.9.4.2 Hardness determined on a transverse section through the threaded portion
9.9.4.3 Hardness determined on a surface
9.9.4.4 Test load for hardness determination
9.9.5 Requirements
9.10 Decarburization test
9.10.1 General
9.10.2 Microscopic method
9.10.2.1 Applicability
9.10.2.2 Preparation of test specimen
9.10.2.3 Test procedure
9.10.2.4 Requirements
9.10.3 Hardness method
9.10.3.1 Applicability
9.10.3.2 Preparation of test specimen
9.10.3.3 Test procedure
9.10.3.4 Requirements
9.11 Carburization test
9.11.1 General
9.11.2 Hardness test on a longitudinal section
9.11.2.1 Applicability
9.11.2.2 Preparation of the test specimen
9.11.2.3 Test procedure
9.11.2.4 Requirements
9.11.3 Surface hardness method
9.11.3.1 Applicability
9.11.3.2 Preparation of test specimen
9.11.3.3 Test procedure
9.11.3.4 Requirements
9.12 Retempering test
9.12.1 General
9.12.2 Applicability
9.12.3 Test procedure
9.12.4 Requirements
9.13 Torsional test
9.13.1 General
9.13.2 Applicability
9.13.3 Apparatus and testing device
9.13.4 Test procedure
9.13.5 Test results
9.13.5.1 Method
9.13.5.2 Requirements
9.14 Impact test for machined test pieces
9.14.1 General
9.14.2 Applicability
9.14.3 Apparatus and testing device
9.14.4 Machined test piece
9.14.5 Test procedure
9.14.6 Requirements
9.15 Surface discontinuity inspection
10 Marking
10.1 General
10.2 Manufacturer's identification mark
10.3 Marking and identification of fasteners with full loadability
10.3.1 General
10.3.2 Marking symbols for property classes
10.3.3 Identification
10.3.3.1 Hexagon and hexalobular head bolts and screws
10.3.3.2 Hexagon and hexalobular socket head cap screws
10.3.3.3 Cup head square neck bolts
10.3.3.4 Studs
10.3.3.5 Other types of bolts and screws
10.3.4 Marking of bolts and screws with left-hand thread
10.4 Marking and identification of fasteners with reduced loadability
10.4.1 General
10.4.2 Marking symbols for fasteners with reduced loadability
10.5 Marking of packages
Annex A
Annex B
Annex C
Bibliography
Cited references in this standard
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