"27-30% chromium content isn’t magic – it’s carbide geometry that matters."*– Journal of Materials Engineering (2023)
Most high-chromium cast iron parts fail because of uneven carbide networks. When carbides cluster, they create stress points that crack under abrasion. Our metallurgists solved this by:
1.Controlled Solidification in lost foam casting – reduces clustering by 60%
2.Post-Cast Heat Treatment at 450°C – aligns carbides into protective "chains"
A rockwell 62 HRC rating means nothing if microstructure is flawed. Recent field data shows:
Alloy Grade | Hardness (HRC) | Actual Service Life |
---|---|---|
Generic 26Cr | 61 | 8,200 hrs |
Optimized 28Cr | 60 | 14,500 hrs |
Source: Cement Plant Crusher Report (Guangzhou, 2024) |
Key insight: Toughness > Hardness. Our alloys absorb impact energy via tempered martensite matrices.
Switch to hyper-eutectic alloys (4.5% C content) – 40% fewer replacement stops
You don’t need a $200k spectrometer:
Spark Test: Golden-yellow sparks = 25-28% Cr content
File Test: No visible scratches at 55+ HRC
Break Test: Fine-grained fracture = good toughness
Pro tip: Request certified spectrograph reports – we include them with every batch.
Free Resource: [Download Our Alloy Selection Checklist]
→ "Choose wear parts that outlive equipment, not vice versa."