Campfire Steel
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Tool Steel 1045 4340 4140 Alloy Forged Round Steel Forging Bar
1: 4340 Steel Introduction
AISI 4340 steel is a medium carbon, low alloy steel known for its toughness and strength in relatively large sections. It is a nickel chromium molybdenum steel, generally supplied hardened and tempered in the tensile range of 930 - 1080 Mpa. Pre-hardened and tempered 4340 steels can be further surface hardened by flame or induction hardening and by nitriding. It offers excellent shock and impact resistance, as well as wear resistance. ASTM 4340 material is utilized where high hardenability and strength are required for highly stressed parts.
2: 4340 Steel Equivalent
| Country | Japan | Germany | Britain | USA |
|---|---|---|---|---|
| Standard | JIS G4103 | EN10250 | BS970 | ASTM A29 |
| Grade | SNCM439 | 36CrNiMo4/1.6511 | EN24/817M40 | 4340 |
3: 4340 Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
|---|---|---|---|---|---|---|---|---|
| 4340 | 0.38-0.43 | 0.15-0.35 | 0.6-0.8 | 0.035 | 0.04 | 0.7-0.9 | 0.2-0.3 | 1.65-2.0 |
4: Mechanical Properties & Size Overviews
| Size Range | Round | Dia 6-1200mm |
| Plate/Flat | Thickness 6mm-500mm | |
| Width | 20mm-1000mm | |
| Heat Treatment | Normalized; Annealed; Quenched; Tempered | |
| Surface | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
Our facilities have the capacity to forge round steel, steel flat, square steel, modules, shafts, and rollers. Specifications include Φ80-1000mm forging materials and 80-1200mm square billets, with a maximum piece weight reaching 50T.
We supply a great variety of hot forged, hot rolled, and cold drawn steels, including engineering steel, tool steel, mold steel, and stainless steel. The facilities own advanced smelting and forging equipment, including 50t ultra-high power electric arc furnaces, LF refining furnaces, and vacuum degassing units.
