BS ISO 945-4:2019

What is ISO 945-4- Microstructure of cast irons about? 

ISO 945-4 is a safety standard on the microstructure of cast irons. 

ISO 945-4 specifies a test method for evaluating nodularity in spheroidal graphite cast irons by comparative visual analysis and image analysis techniques. 

ISO 945-4 provides figures for different levels of nodularity and graphite particle count of spheroidal graphite cast irons for visual analysis. 

Who is ISO 945-4- Microstructure of cast irons for?  

ISO 945-4 on the test method for evaluating nodularity in spheroidal is relevant to: 

• Testing authorities 
• Metallurgical engineers 
• Chemical engineers 
• Corrosion engineers 
• Manufacturers of cast iron products 
• Metalworkers' engineers 

Why should you use ISO 945-4- Microstructure of cast irons? 

The shape of the graphite particles is an important characteristic of spheroidal graphite cast irons. 

ISO 945-4 characterizes the graphite particles observed, information is generally necessary on the nodularity, the size, and the number of the graphite particles. Nodularity is designated by a percentage, in increments of five percentage points. Graphite particle size is designated by numbers from 3 to 8. 

Overall, ISO 945-4 is useful as it assists the user with the test method for evaluating nodularity in spheroidal.