| Item |
| | Round | Dia 12mm-500mm | |
| Flat (*when forged, production width is 4 times than thickness) | Thickness 12mm-400mm |
| Width 50mm-800mm |
| | AISI H13
| C:0.32-0.45, Si:0.80-1.20, Mn:0.20-0.50, Cr:4.75-5.50, Mo:1.10-1.75, V:0.80-1.20, P≤0.030, S:≤0.030 |
| DIN 1.2344 | C:0.37-0.42, Si:0.90-1.20, Mn:0.30-0.50, Cr:4.80-5.50, Mo:1.20-1.50, V:0.90-1.10, P≤0.030, S:≤0.030 |
| JIS SKD61 | C:0.32-0.42, Si:0.80-1.20, Mn:≤0.50, Cr:4.50-5.50, Mo:1.00-1.50, V:0.80-1.20, P≤0.030, S:≤0.030 |
| 4Cr5MoSiV1 | C:0.32-0.45, Si:0.80-1.20, Mn:0.20-0.50, Cr:4.75-5.50, Mo:1.10-1.75, V:0.80-1.20, P≤0.030, S:≤0.030 |
| Technique | Rolled or Forged |
| Process | EAF+LF+VD+ESR+FORGED/ROLLED+Heat Treatment (Annealed,A Normalized, Q+T) |
| Heat treatment | Normalized; Annealed ; Quenched ; tempered |
| Surface Condition/Treatment | Black surface ; Grinded/Peeled; Machined; Turned/Bright |
| Inspection | 100% Ultrasonic according to the test standards:SEP1921-84,CLASS C/c or D/d |
| Payment Terms | T/T;L/C (30% advance payment by T/T, and 70% should be paid against the color scanned copy of BL by T/T or irrevocable L/C at sight) |
| Trade Terms | FOB; CIF; CFR |
| Packing | Standard seaworthy packing or as customer required |
| Shipping Marks | As Buyer/Seller's option. N/M means no marks. |
| Invoicing | According to acctural weight (25 tons). If the acctural weight ≥ 25 tons, pls fill less to the seller for the over weight according to the PI price. |
| Size tolerence | 0/+2mm for bright / grinded / machined surface, 0/+4mm for black / peeled surface. |
| Length tolerence | 10% shorter length should be allowed. |
| Quantity tolerence | -10%/+10% for total quantity. |
| Heat Treatment |
| Forging | Preheat slowly to 750°C then increase the temperature more rapidly to 1050-1100 °C. Do not forge below 850°C. It is essential to cool the H13 slowly after forging, either in a furnace or in vermiculite |
| Annealing | Soak thoroughly at 840-860°C before furnace cooling at a maximum rate of 20°C per hour down to 600°C followed by cooling in air. |
| Stress relieving | When desirable to relieve the strains of machining, heat slowly to 1050°-1250°F, allow to equalize,and then cool in still air (Strain Relieving) |
| Preheat prior to hardening | Warm slightly before charging into the preheat furnace, which should be operating at 1400°-1500°F. |
| Hardening | H13 is a steel having very high hardenability and should be hardened by cooling in still air. The use of a salt bath or controlled atmosphere furnace is desirable to minimize decarburization, and if not available, pack hardening in spent pitch coke is suggested. The temperature employed is usually 1800°-1850°F, depending on size section. |
| Quenching | Quench in still air or dry air blast. If complicated forms are to be hardened, an interrupted oil quench can be used. Quench part in oil and remove from bath when it just loses its color (1000°-1100°F). Finish cooling to below 150°-125°F in air, then temper immediately. |
| Tempering | Tempering practice may vary with size and application, but is usually performed in the range of maximum secondary hardness or higher. Double tempering is recommended. The results below is H13 that was air quenched from 1800°F and tempered for 4 hours at various temperatures.The results may be used as a guide, keeping in mind that parts of heavy section or mass may be several points lower in hardness. |
| Applications | Typical applications for are forging dies, forging die inserts, hot gripper dies, hot nut tools, hot header dies, brass forging and pressing dies, aluminum base dies, aluminum casting and extrusion dies, zinc die casting dies, extrusion mandrels, plastic molds, cores, die holder blocks, hot press dies, hot work punches, etc. |
Main Products: mould steel ,die steel ,tool steel ,alloy steel ,special steel
Business Type: Manufacturer,Trading Company
Huangshi Hubei China
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