SGS Test Report for Grade 12.9 Bolts
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SGS Test Report for Grade 12.9 Bolts
This page provides the full SGS certification test results for Grade 12.9 wheel bolts (material SCM440). The tests include chemical composition analysis, hardness, decarbonization, proof load verification, wedge loading, and fatigue//limited lifespan testing.
π Test Categories
- Chemical Composition Analysis
- Decarbonization & Decarburization Tests
- Hardness Test
- Verification Load Test
- Wedge Load Test
- 1 Million Cycles Fatigue/Limited Lifespan Test
- 2 Million Cycles Fatigue/Limited Lifespan Test
π Chemical Composition Test
SCM440 chemical composition result according to SGS standards.


π Decarbonization Test



π Decarburization Extended Test



π Hardness Test


π One Million Finite Lifespan/Limited Lifespan Test


π Two Million Finite Lifespan/Limited Lifespan Test


π Verification Load Test



π Wedge Load Test



π Conclusion
The Grade 12.9 SCM440 wheel bolts successfully passed all SGS certified testsοΌ
- Chemical composition within SCM440 standards
- No decarburization issues
- Hardness meets Grade 12.9 requirement
- Verification load test passed
- Wedge load test passed
- 1 million fatigue/limited lifespan cycles passed
- 2 million fatigue/imited lifespan cycles passed
Please contact us for additional information or customized testing requirements.