NO | 
composizione chimica % | 
HRC | ||||||||

C | 
Si | 
Mn | 
CR | 
MO | 
Na | 
Cu | 
P | 
S | ||

KmTBCr4Mo | 
2.5-3.5 | 
0.5-1.0 | 
0.5-1.0 | 
3.5-4.5 | 
0.3-0.5 | 
- | 
- | 
≤0.15 | 
≤0.10 | 
≥55 |

KmTBCr9Ni5Si2 | 
2.5-3.6 | 
1.5-2.2 | 
0.3-0.8 | 
8.0-10.0 | 
0-1.0 | 
4.5-6.5 | 
4.5-6.5 | 
- | 
- | 
≥58 |

KmTBCr15Mo | 
2.8-3.5 | 
≤1.0 | 
0.5-1.0 | 
13-18 | 
0.5-3.0 | 
0-1.0 | 
0-1.0 | 
≤0.10 | 
≤0.06 | 
≥58 |

KmTBCr20Mo | 
2.0-3.3 | 
≤1.2 | 
≤2.0 | 
18-23 | 
≤3.0 | 
≤2.5 | 
≤1.2 | 
- | 
- | 
≥60 |

KmTBCr26 | 
2.3-3.3 | 
≤1.2 | 
≤1.0 | 
23-30 | 
≤3.0 | 
≤2.5 | 
≤2.0 | 
- | 
- | 
≥60 |