BS EN 10222-4:2017+A1:2021

What is BS EN 10222‑4 about?  

BS EN 10222‑4 is the fourth part of a series of documents on steel forgings.  

BS EN 10222‑4 specifies the technical delivery conditions, specified elevated temperature properties, chemical composition, and mechanical properties required for forgings of weldable fine grain steels for manufacturing pressure equipment.  

Who is BS EN 10222‑4 for?  

BS EN 10222‑4 on steel forgings for pressure purposes is relevant to: 

• Steel forgings Industries 
• Mechanical engineer 
• Quality engineers 
• Manufacturer of pressure vessels 

Why should you use BS EN 10222‑4?  

Fine-grained steels are very tough, resulting in better processing properties. 

BS EN 10222‑4 provides information on heat treatment, chemical composition, table on mechanical properties at various temperatures, surface conditions required to manufacture products by steel forgings of weldable fine grain steels. 

BS EN 10222‑4 assists the user to manufacture high-quality forged steel products of weldable fine grain steels. BS EN 10222‑4  helps the user to improve the quality of the product and make it safer to handle the pressure. With BS EN 10222‑4 you can be ensured that the products consistently meet and exceed quality assurance targets. 

What’s changed since the last update?  

BS EN 10222‑4:2017+A1:2021 supersedes BS EN 10222‑4:2017, which is withdrawn 

Some significant changes done compared to the previous version are 

• Updated normative references and optional information’s 
• Table containing values and statements on the heat treatment of the steels updated 
• New Table  containing values for the mechanical properties at room temperature added 
• New steel grades added: P355NL1 and NL2; P355QL1 and QL2; P460QH, P460QL1, and QL2 
• Updating of the values for the chemical composition and mechanical properties for the steel grades covered by this part of the EN 10222 series; 
• Resistance to hydrogen-induced cracking inserted in the standard