What is BS EN ISO 630:2019?

BS EN ISO 630:2019 is an international standard that specifies the requirements for high-yield-strength, quenched, and tempered structural steel plates. It provides guidelines for the chemical composition, mechanical properties, and tolerances of these steel plates. This standard is applicable to hot-rolled or cold-rolled steel plates with thicknesses ranging from 4 mm to 160 mm.

Chemical Composition Requirements

The standard defines the chemical composition requirements for various elements in the steel plate. These elements include carbon (C), manganese (Mn), silicon (Si), sulphur (S), phosphorus (P), chromium (Cr), nickel (Ni), copper (Cu), molybdenum (Mo), vanadium (V), niobium (Nb), titanium (Ti), aluminum (Al), nitrogen (N), and boron (B). Each element has specific limits and should be within those limits to meet the standard's requirements.

Mechanical Properties and Testing

BS EN ISO 630:2019 specifies the minimum values for yield strength, tensile strength, and elongation of the steel plates. These properties are determined through tension tests and impact tests conducted at specified temperatures. The standard also outlines the requirements for hardness testing, bend testing, and ultrasonic testing. These tests ensure that the steel plates meet the required quality standards and can withstand the intended load and environmental conditions.

Tolerances and Dimensional Requirements

The standard provides tolerances for dimensions such as length, width, thickness, flatness, and straightness. It also specifies requirements for the surface quality, including roughness and imperfections. These dimensional requirements and tolerances ensure that the steel plates can fit into various structural applications and meet the desired specifications.

Conclusion

BS EN ISO 630:2019 is an essential standard for manufacturers, engineers, and designers involved in the production and use of high-yield-strength, quenched, and tempered structural steel plates. By complying with this standard, stakeholders can ensure the quality, reliability, and compatibility of these steel plates in different construction projects. It provides clear guidelines for chemical composition, mechanical properties, testing, and dimensional requirements, enabling seamless integration of the steel plates into various applications.