Materials / Material Selection Guide
Material Selection Guide
Selecting the right alloy is the single biggest lever on component cost, life and performance. This guide walks through the practical decision framework Monmet engineers use to specify cast and forged materials.
Quick answer
Choosing the right cast or forged alloy comes down to three questions: what is the service environment (temperature, chemistry, abrasion), what mechanical properties are required, and which process fits the part's size and complexity at the lowest lifecycle cost. Monmet's engineers help match the answer to a specific alloy family.
Step 1 — Service Environment
Define operating temperature, chemistry (pH, chlorides, H2S, oxidizing/reducing), pressure and abrasion. These inputs narrow the alloy choice before anything else.
Step 2 — Mechanical Demands
Quantify required tensile, yield, impact toughness (esp. at low temp) and fatigue life. Match to the most economical grade meeting all minimums with a margin.
Step 3 — Process Fit & Cost
Confirm castability or forgeability of the chosen grade at your part size and complexity. Compare lifecycle cost (material + machining + service life) — not just per-kg purchase price.
Quick Picks
General industrial: carbon steel. Mild corrosion: stainless steel. Seawater: super-duplex stainless or a nickel alloy. High wear: chrome-white iron or a wear-resistant grade. High temperature: heat-resistant steel or a nickel-based alloy. Lightweight high-strength: aluminum or titanium alloys.
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