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Round steel for tooling

Name Brand Specifications Executive standard Chemical composition analysis (melting composition)% Performance characteristics Purpose
C Si Mn P  ≤ S  ≤ Cr
Round steel for tooling T7 Φ18~65 GB/T1299 0.65-0.74 ≤0.35 ≤0.40 0.030 0.030   Meet the requirements of relevant organizations and performance of national standards Cutting, cutting tools, such as file, turning tool, tap, etc
T8 Φ18~65 0.75-0.84 ≤0.35 ≤0.40 0.030 0.030  
T9 Φ18~65 0.85-0.94 ≤0.35 ≤0.40 0.030 0.030  
T10 Φ18~65 0.95-1.04 ≤0.35 ≤0.40 0.030 0.030  
T11 Φ18~65 1.05-1.14 ≤0.35 ≤0.40 0.030 0.030  
T12 Φ18~65 1.15-1.24 ≤0.35 ≤0.40 0.030 0.030  
T13 Φ18~65 1.25-1.35 ≤0.35 ≤0.40 0.030 0.030  
9SiCr Φ18~65 0.85-0.95 1.20-1.60 0.30-0.60 0.030 0.030 0.95-1.25 The hardness, wear resistance and hardenability are good, and the structure and properties meet the standard requirements. Cutting tools, drawing dies, cold forging tools, measuring tools, etc
Cr2 Φ18~65 0.95-1.10 ≤0.40 ≤0.40 0.030 0.030 0.10-0.30

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