1 Scope
This standard specifies requirements on terms and definitions, designation, technical requirements, sampling and test specimen, test methods, inspection rules, marking, packaging, storage and transportation of iron castings, etc.
This standard is applicable to the compacted (vermicular) graphite iron castings cast in a sand mould, or a mould of comparable thermal behaviour. This standard may be used as reference for the compacted (vermicular) graphite iron castings produced by other casting methods.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 228 Metallic materials - Tensile testing at ambient temperature (GB/T 228-2002, eqv ISO 6892:1998)
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method (GB/T 231.1-2009, ISO 65061:2005, MOD)
GB/T 5611 Foundry terminology
GB/T 5612 Code for representing cast iron (GB/T 5612-2008, ISO 15931:2004, MOD)
GB/T 6060.1 Roughness comparison specimens - Cast surfaces (GB/T 6060.1-1997, eqv ISO 2632-3:1979)
GB/T 6414 Castings - System of dimensional tolerances and machining allowances (GB/T 6414-1999, eqv ISO 8062:1994)
GB/T 11351 Mass tolerances for castings
GB/T 26656 Metallographic test for compacted (vermicular) graphite cast irons
3 Terms and definitions
For the purposes of this document, the terms and definitions established in GB/T 5611 and the following apply.
3.1
compacted/vermicular graphite cast iron
cast material with the carbon present mainly in the form of precipitated compacted (vermicular) graphite particles embedded in a metallic matrix
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Designation
5 Order information
6 Manufacture
7 Technical requirements
8 Sampling and samples
9 Test methods
10 Retests
11 Other tests on castings
12 Marking and quality report
13 Surface protection, packaging, storage and handling requirements
Annex A (Informative) Additional information on compacted/vermicular graphite cast irons
Annex B (Informative) Technological variables affecting machinability in compacted/vermicular graphite cast irons
Annex C (Informative) Compacted/vermicular graphite cast irons - Properties and typical applications
