Die steel H13 We are professional manufacturer of alloy steel, we supply kinds of alloy steel more than 20000 ton a year, and our factory passed ISO9001:2000, the main facilities are 1 set of 10 Ton EAF,1 set of 10 Ton LF & 1 set of 10 Ton VOD, and electro-slag furnace from 0.5Ton to 10Ton, Electro-hydraulic hammer from 1Ton to 10Ton, 40Ton annealing furnace. We have a experienced team for production, so we can ensure the quality. Standard Chemical Composition C Si Mn Cr Mo V P S GB/T1299-2000 % 0.32-0.45 0.80-1.20 0.20-0.50 4.75-5.50 1.3-1.75 0.89-1.20 �.025 �.010 Properties: 1. Hot working steel with dry hardening. 2. Excellent toughness. 3. Good resistance to cold and heat fatigue. 4. Wearing resistance in mesothermal conditions. 5. Small distortion after vacuum hardening. 6. Small oxidation orientation by air quenching. 7. Resistance for erosive attack of molten aluminums