H11

H11, equivalent to 882, is a 5% chromium hot work tool steel designed particularly for applications requiring extreme toughness combined with good red hardness. It provides an extra margin of safest in tools subject to heavy hammer blows, and those tools containing deep recesses or sharp corners. While H11 has been designed primarily as a hot work tool steel, it has been used in many cold work applications where extra toughness is required at the sacrifice of some wear resistance. This alloy has been used at very high strength levels in excess of 260,000 psi (1793 MPa). It also displays high creep and rupture strength at temperatures between 800 and 1200°F (427 and 649°C).