International Standard ISO 5954: 2014
Cold-reduced carbon steel sheet according to hardness requirements
Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Dimensions
5 Surface characteristics
5.1 General
5.2 Surface quality
5.3 Surface finish
5.4 Suitability for surface coating
5.5 Oiling
6 Conditions of manufacture
6.1 Steelmaking
6.2 Chemical composition
6.3 Chemical analysis
6.4 Weldability
6.5 Application
6.6 Hardness ranges
7 Dimensional tolerances
8 Sampling
9 Tests
10 Cold bending properties
11 Retests
11.1 Machining and flaws
11.2 Additional tests
12 Resubmission
13 Workmanship
14 Inspection and acceptance
15 Coil size
16 Marking
17 Information to be provided by the purchaser
Bibliography
1 Scope
This International Standard applies to cold-reduced carbon steel sheet and corresponding hardness requirements. It is suitable for applications where the surface is of prime importance.
The following are common hardness ranges (see 6.6):
— CRH-50: Rockwell B 50 to 70;
— CRH-60: Rockwell B 60 to 80;
— CRH-70: Rockwell B 70 to 90;
— CRH-NN: Any Rockwell B range of 20 points up to and including HRB 90 maximum (designated minimum of specified range will be shown).
NOTE By agreement between the supplier and purchaser, Rockwell ranges less than 20 points can be specified.
This International Standard does not cover commercial quality or drawing qualities (covered in ISO 3574) and cold-reduced carbon steel strip.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6508 (all parts), Metallic materials — Rockwell hardness test
ISO 16162, Cold-rolled steel sheet products — Dimensional and shape tolerances
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