Generic material names hide important differences
Terms such as stainless steel or alloy steel describe broad families. A purchasing specification should name a grade, condition, applicable material standard and required test evidence.
Material grades for hardware buyers
Understand why stainless steel, carbon steel, alloy steel, brass and aluminium require more than a generic material label.
START WITH THREE QUESTIONS
What a careful reader should establish.
- Is the grade named in an accepted designation system?
- Are chemistry and mechanical properties both required?
- What evidence must accompany each lot?
- Grade and designation system
- Heat treatment or condition
- Chemical and mechanical test requirements
Match material to the operating environment
Strength, corrosion, temperature, conductivity, magnetic response and compatibility can all affect suitability. Engineering approval remains essential for safety-critical use.
- Service temperature and load
- Corrosion and chemical exposure
- Galvanic and material compatibility
Check the original source.
These links are starting points, not proof that a particular product or supplier complies.
ISO standards catalogue↗ASTM standards and publications↗