| Country | China | Japan | Germany | USA | UK |
| Standard | GB/T 1299 | JIS G4404 | DIN EN ISO4957 | ASTM A681 | BS 4659 |
| Grade | 3Cr2MnNiMo | / | 1.2738 | P20+Ni / 718 | / |
| Grade | C | Mn | Si | Cr | Ni | Mo | ||||||
| 1.2738 | 0.40 | 1.50 | 0.30 | 1.90 | 1.10 | 0.20 | ||||||
| 3Cr2MnNiMo | 0.33 | 0.37 | 0.8 | 1.1 | 0.15 | 0.35 | 1.65 | 1.75 | 0.4 | 0.5 | 0.4 | 0.5 |
| P20+Ni / 718 | 0.35 | 0.45 | 1.3 | 1.6 | 0.2 | 0.4 | 1.8 | 2.1 | 1.9 | 1.2 | 0.15 | 1.35 |
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block |
Thickness
6mm-500mm |
|
|
Width
20mm-1000mm |
||
| Process | EAF+LF+VD+Forged+Heat treatment(optional) | |
| 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 | DIN 1.2738 is applicable for large & small plastic mould dies for Automotive Industries, Dies for Domestic goods , High finishing plastic Die, Boaster Plates of Presses, Die Holders & Shoe blocks for drop Hammers, Press Cassettes , Upsetter Blocker, forging dies, Different dies & mold for plastic products etc. | |
Soft annealing:
710 to 740 °C for about 2 to 5 hours; slow controlled cooling of 10 to 20 °C per hour to about 600 °C further cooling in air, max. 220 HB
Hardening:
840 to 870 °C
15 to 30 minutes keeping curing temperature
quenching in oil/hot bath/air 180 bis 220 °C
obtainable hardness: 53 HRC
Tempering:
slow heating to tempering temperature immediately after hardening; minimum time in furnace: 1 hour per 20 mm part thickness; tempering twice is recommended.
7: Delivery condition
For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.
For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.
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.
The company owns advanced special steel smelting facilities and forging processing equipments, the main steel-making equipment include 2 sets of 50t ultra-high power electric arc furnaces,2 sets of 60t LF refining furnaces,1 set of 60t vacuum degassing refining furnace and 4 sets of 1-20t electroslag re-melting furnaces.