EN 1562:2019

Overview

EN 1562:2019 - Founding - Malleable cast irons (CEN) defines grades and mechanical requirements for malleable cast irons used in foundry products. The standard classifies materials into whiteheart (decarburized) and blackheart (non-decarburized) malleable cast iron groups, specifying five whiteheart and nine blackheart grades. Mechanical properties are established from cast test samples; chemical composition is not covered except for phosphorus (see Clause 6). Brinell hardness is reported only when requested by the purchaser.

Key topics and requirements

• Material classification: Distinguishes whiteheart and blackheart malleable cast irons and their microstructural differences (temper carbon, ferrite/pearlite content).
• Grades and designation: Materials are designated by symbol or number (aligned with EN 1560/EN 10027–2 principles); properties relate to a preferred test-piece diameter (nominal 12 mm).
• Mechanical properties:
  • Tensile strength and elongation are mandatory and measured on cast samples.
  • 0.2% proof strength is included when requested by purchaser.
  • Brinell hardness values are determined only if specified in the order (guidance values appear in the standard’s tables).
  • Impact energy testing is normally required for specific grades (e.g., EN‑GJMB‑350‑10) and for grades used in pressure equipment; Charpy V-notched tests are used for pressure applications, while un‑notched Charpy may be used for other grades (Annex B).
• Sampling and test pieces: Defines cast sample types (separately cast and side‑by‑side), sizes, and wall‑thickness dependence of mechanical properties.
• Manufacture and composition: The manufacturer determines melt practice, composition and heat treatment to meet specified properties; phosphorus should be limited (≤ 0.10 %) for castings subject to additional treatments or low‑temperature service.
• Scope exclusions: Does not cover technical delivery conditions for castings - see EN 1559‑1 and EN 1559‑3 for delivery requirements.

Applications and users

• Foundries and casting manufacturers specifying or producing malleable cast iron components.
• Materials engineers, procurement specialists and quality inspectors who need standardized mechanical property requirements.
• Designers of components for general engineering and some pressure equipment (only permitted grades and conditions apply).
• Test laboratories performing tensile, Brinell and Charpy testing to verify compliance.

Related standards

• EN 1559‑1, EN 1559‑3 (technical delivery conditions for malleable cast iron castings)
• EN 1560 (designation system)
• EN ISO 6892‑1 (tensile testing), EN ISO 6506‑1 (Brinell), EN ISO 148‑1 (Charpy)
• EN 764‑5, EN 10204 (inspection/documentation)

Keywords: EN 1562:2019, malleable cast iron, whiteheart, blackheart, mechanical properties, Brinell hardness, tensile strength, impact energy, foundry standard.