Ductile Iron EN-GJS-500-7 (DIN GGG50 / ASTM A536 65-45-12): Complete Engineering & Machining Datasheet

2 min read Materials MAT-007

Prerequisite: Ductile Iron Castings (EN-GJS / ASTM A536): Complete Metallurgy, Design & Purchasing Guide

EXECUTIVE QUICK ANSWER & METALLURGICAL OVERVIEW

  1. TECHNICAL FUNDAMENTALS & ENGINEERING SPECIFICATION MATRIX The operational capacity and fatigue life of components inside the Ductile Iron Castings category depend upon strict adherence to international material and dimensional standards (ISO, EN, DIN, ASTM). Below is the master specification matrix.

  2. GLOBAL SOURCING ECONOMICS & INDIAN FACTUAL BENCHMARKS (AQUASUB / TEXMO) Core Benchmark: Verifiable production of heavy-duty, zero-porosity EN-GJS-500-7 water pump casings and motor end shields across Coimbatore manufacturing lines (Aquasub / Aquagroup / Texmo). When evaluating international sourcing options for Ductile Iron Castings, European procurement directors can reference established Indian manufacturing leaders in the Coimbatore Corridor (Aquasub Engineering / Aquagroup and Texmo Industries). Operating captive automated green sand molding loops (DISAMATIC 2110) coupled with multi-axis CNC horizontal machining and 100% automated pressure testing, these groups prove definitively that Indian foundries routinely deliver European zero-defect (PPM < 10) standards at a 30%+ net landed DDP savings (PIL-008 / PRO-004).

[EXECUTIVE QUICK ANSWER: DUCTILE IRON CASTINGS] EN-GJS-500-7 (EN 1563 / DIN GGG50 / ASTM A536 65-45-12) is known as The Industry Workhorse Grade. Featuring a balanced ferritic-pearlitic matrix with spheroidal graphite nodules (>85% nodularity), it provides 500 MPa tensile strength, 320 MPa yield strength, and 7% elongation—delivering high toughness for heavy gears, tractor axles, and water pump housings (Aquasub benchmark).

Chemical Composition Element Typical Percentage Limit (%) Metallurgical & Mechanical Role
Total Carbon (% C) 3.50 – 3.85% Primary carbon source required for spheroidal graphite nodule precipitation during solidification.
Silicon (% Si) 2.20 – 2.60% Promotes ferrite matrix formation and prevents chilled white iron (Fe3C) carbides across thin edges.
Magnesium (% Mg) 0.035 – 0.060% The mandatory nodularizing agent that alters graphite growth from sharp flakes to rounded spheres (ISO 945-1).
Phosphorus (% P) ≤ 0.05% Strictly limited to prevent brittle phosphide eutectic (steadite) networks along grain boundaries.

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