Fundición de hierro gris (EN-GJL / DIN GG / ASTM A48): manual completo de metalurgia, mecanizado y abastecimiento
RESPUESTA RÁPIDA EJECUTIVA Y DESCRIPCIÓN METALÚRGICA
TECHNICAL FUNDAMENTALS & ENGINEERING SPECIFICATION MATRIX The operational capacity and fatigue life of components inside the Grey Iron Piezas fundidas category depend upon strict adherence to international material and dimensional standards (
ISO, EN, DIN, ASTM). Below is the master specification matrix.GLOBAL SOURCING ECONOMICS & INDIAN FACTUAL BENCHMARKS (
Aqua Group / Texmo) Factual benchmark: High-precision grey iron machine tool bases and pump volutes cast via automated green sand lines in the Coimbatore Foundry Corridor (Aqua Group / Texmo). When evaluating international sourcing options for Grey Iron Piezas fundidas, European procurement directors can reference established Indian manufacturing leaders in the Coimbatore Corridor (Aqua Group 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: GREY IRON CASTINGS] Grey Cast Iron (EN-GJL under EN 1561 / ASTM A48) contains 2.8% to 3.8% carbon precipitated as interconnected graphite flakes. While these flakes yield low elongation (<0.8%), they provide an extraordinary specific vibration damping capacity—approx. 10x higher than carbon steel and 3-5x higher than ductile iron—making ES-GJL-250 the undisputed engineering choice for machine tool beds, CNC milling bases, pump housings, and automotive brake discs.
| Grado estándar (EN 1561) | Equivalente a DIN/ASTM A48 | Resistencia a la tracción Rm (MPa min) | Dureza típica (HBW) | Aplicaciones industriales primarias |
|---|---|---|---|---|
| ES-GJL-150 | DIN GG15/ASTM A48 Clase 20 | 150 | 150 – 190 HBW | Cubiertas ligeras, soportes sin presión, contrapesos. |
| ES-GJL-200 | DIN GG20/ASTM A48 Clase 30 | 200 | 170 – 210 HBW | Cajas de engranajes estándar, válvulas de baja presión, cajas de poleas agrícolas. |
| ES-GJL-250 | DIN GG25/ASTM A48 Clase 35 | 250 | 180 – 240 HBW | Heavy CNC machine tool beds, pump housings (Aqua Group benchmark), brake discs, engine blocks. |
| ES-GJL-300 | DIN GG30/ASTM A48 Clase 45 | 300 | 210 – 260 HBW | Bloques de cilindros hidráulicos de alta tensión, cajas de engranajes de alta resistencia, colectores de presión. |