| Country | USA | German | Japan |
| Standard | ASTM A681 | DIN EN ISO 4957 | JIS G4404 |
| Grade | P21/P20+S | 1.2312 | NAK80 |
| Grade | C | Si | Mn | P | S | Cr | Mo |
| NAK80 | 0.15 | 0.3 | 1.5 | 0.03 | 0.03 | 1.4-2 | 0.3-0.55 |
| 1.2312 | 0.06-0.16 | 0.4 | 1.4-1.7 | 0.03 | 0.03 | 1.8-2.1 | 0.15-0.25 |
| P21 | 0.18-0.22 | 0.2-0.4 | 0.2-0.4 | 0.03 | 0.03 | 1.4-2 | 0.3-0.55 |
| Size | Round | Dia 200-1000mm |
| Plate/Flat/Block |
Thickness
16mm-100mm |
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Width
200mm-2000mm |
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| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; C&F; etc.. | |
| Delivery time | 30-45 days | |
| Application |
NAK80 tool steels are used for transparent products and others for which mirror finished surface are particularly important; Products for which electrical discharge machined surfaces are very important; Typical for clear lens molds, extremely critical diamond finish applications, and molds requiring special EDM finish. |
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Hunan Qilu Industrial Co., Ltd has the capacity to forge round steel, steel flat, square steel, module, shaft and roller, etc. The main specifications of the products include Φ80-1000mm forging materials and 80-1200mm square billets and which the maximum piece weight can reach 50T.