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Chemical Specification
Frequently Asked Questions
What is a chemical specification?
A chemical specification defines the required chemical composition, purity levels, and maximum limits of impurities for a material to ensure its quality, safety, and performance consistency.
Why are chemical specifications important?
They ensure regulatory compliance (such as REACH or RoHS), guarantee compatibility in manufacturing processes, and prevent material failures in demanding applications.
How is the chemical composition verified?
Verification is typically performed using advanced analytical techniques such as ICP-OES, X-ray Fluorescence (XRF) spectroscopy, or wet chemistry, and is documented in a Certificate of Analysis (COA).
What is the difference between nominal and actual chemical composition?
Nominal composition is the target standard design value, while the actual composition is the precise measurement of a specific batch, which must fall within the allowed tolerance range.
Can custom chemical specifications be requested?
Yes, depending on application needs, custom alloying elements or stricter impurity thresholds can be engineered to achieve specific mechanical or chemical properties.