1. Charpy test method is used to evaluate material toughness, brittle–ductile behavior, and resistance to sudden

impact, especially at low temperatures.

Typical Materials

• Metals: carbon steel, alloy steel, stainless steel, cast iron, aluminum alloys

• Engineering plastics & composites (ISO 179 when needed)

Common Application Fields

• Steel structure quality control

• Pressure vessels, boilers, pipelines

• Automotive & railway components

• Shipbuilding, offshore structures

• Nuclear & energy industry

• Welded joint quality verification

• Failure analysis & material development

Why Use Charpy?

• Good for metallic materials

• Detects ductile–brittle transition temperature

• Used to ensure safety in cold environments

• Standard test for industrial acceptance

2. IZOD Impact Test is used to evaluate resistance to impact for materials under cantilever loading—commonly used in plastics testing.

Typical Materials

• Plastics & polymers

• Rubber

• Reinforced composites

• Non-metallic engineering materials

• Some light metals (rare)

Common Application Fields

• Plastic product design & quality control

• Electronic housings & appliances

• Automotive plastic parts

• Consumer products

• Material R&D and comparison of polymer grades

Why Use Izod?

• Very suitable for non-metallic materials

• Sensitive to notch effects and crack initiation

• Useful for material comparison in plastics