ДСТУ ISO 898-1:2015 Механічні властивості кріпильних виробів із вуглецевої сталі й легованої сталі. Частина 1

Contents

Foreword

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

8.3 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

9 Test methods

9.1 Tensile test under wedge loading of finished bolts and screws (excluding studs)

9.2 Tensile test for finished bolts, screws and studs for determination of tensile strength, Rm

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

9.4 Tensile test for bolts and screws with reduced loadability due to head design

9.5 Tensile test for fasteners with waisted shank

9.6 Proof load test for finished bolts, screws and studs

9.7 Tensile test for machined test piece

9.8 Head soundness test

9.9 Hardness test

9.10 Decarburization test

9.11 Carburization test

9.12 Retempering test

9.13 Torsional test

9.14 Impact test for machined test pieces

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

10.4 Marking and designation of fasteners with reduced loadability

10.5 Marking of packages

Annex A (informative) Relationship between tensile strength and elongation after fracture

Annex B (informative) Influence of elevated temperatures on mechanical properties of fasteners

Annex C (informative) Elongation after fracture for full-size fasteners, Af

Bibliography

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