Hardness Standards: Selection Based on Application
How should hardness standards for hardware structural components be selected? Choose based on application: load-bearing components (hardness/strength), wear-resistant components (hardness/wear resistance), fasteners (hardness/grade), and decorative components (hardness/moderate).
Industry experts note that selection should be evaluated by application: load-bearing components (hardness/strength/matching), wear-resistant components (hardness/wear resistance/grade), fasteners (hardness/grade/standard), and decorative components (hardness/moderate/balance);
selecting by application prevents mismatches.
Selection Based on Application
- Load-bearing components: Hardness/strength (load-bearing), matching;
- Wear-resistant components: Hardness/wear resistance (wear resistance), graded;
- Fasteners: Hardness/grade (fastening), standard;
- Decorative components: Hardness/moderate (decoration), balance;
- Selection based on application: By application (standard), preventing mismatches.
Key Evaluation Points
First, load-bearing matching.
Hardness/strength (load-bearing) matching prevents excessive brittleness.
Second, wear resistance grading.
Hardness/wear resistance (wear resistance) grading prevents premature wear.
Third, fastening standards.
Hardness/grade (fastening) standards prevent breakage.
Fourth, decorative balance.
Hardness/moderate (decoration) balance prevents deformation.
Pitfalls to Avoid
First, the “higher is better” fallacy.
Excessive brittleness leads to breakage (hidden risk);
focus on load-bearing matching. Second, mismatched grades.
Failure (loss) and fastening standards.
Third is “ignoring operating conditions.”
Mismatching (risk);
selection should be based on application.
Trends and Reminders
Hardness standards are moving towards “refinement”: a trend of grading based on specific needs (refinement) and material upgrading (moving upmarket).
For purchasers, the recommendation is to “select based on application, specify grades clearly, and match operating conditions.”
Choosing the right hardness standard ensures more stable performance.
