Kõrgtugev malm EN-GJS-500-7 (DIN GGG50 / ASTM A536 65-45-12): täielik inseneri- ja mehaanilise töötlemise andmeleht
Prerequisite: Kõrgtugevast malmist valandid (EN-GJS / ASTM A536): täielik metallurgia-, disaini- ja ostujuhend
KIIRE VASTUS JA METALLURGIKA ÜLEVAADE
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.GLOBAL SOURCING ECONOMICS & INDIAN FACTUAL BENCHMARKS (
Aqua Group / 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 (Aqua Group / Texmo). When evaluating international sourcing options for Ductile Iron Castings, 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: 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 (Aqua Group benchmark).
| Keemilise koostise element | Tüüpiline protsendipiirang (%) | Metallurgiline ja mehaaniline roll |
|---|---|---|
Total Carbon (% C) |
3,50–3,85% | Peamine süsinikuallikas, mis on vajalik sfäärilise grafiidi sõlmede sadestamiseks tahkestumise ajal. |
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. |