H13 1. excellent themal shock resistance 2. Good red hardness 3. in stock H13 1.2344 tool steel1. High purity, high hardness, good abrasion resistance2. High hot strength and hardness3. Good resistance to heat, good hot toughness, high resistance to temperature fatigue and wear in medium heat4. Small heat deformation5. The tendency of the appearing of iron oxide skin are small in air-quenching6. ...