Specifications

steel plate 4340
1.34CrNiMo6
2.hot rolled,annealing or pre-hardened
3.steel sheet/flat/round bar
4.black/machined

 

steel plate 4340

 

4340 alloy steel flat bar

 

AISI 4340 steel

 

Alloy tool steel 4340, DIN 1.6582

1. Chemical composition: (%)
C: 0.37-0.44
Si: 0.17-0.37
Mn: 0.50-0.80
Cr: 0.60-0.90
Mo: 0.15-0.25
Ni: 1.25-1.65

2. Smelting process: EAF+LF+VD(+ESR if necessary )

3. Size: Flat:T20mm- 300mm*L200mm - 1500mm; Round: Dia 50mm - 600mm.

4. Characteristics:
High strength, High tenacity, good hardenability, and high resistance to thermal properties

5. Applications:
Used for manufacture big sized important Quenched-and-Tempered parts which request good toughness and high strength. Such as top load shaft in heavy-duty machinery;
For steam turbine shaft, vane, and heavy-load transmission parts, fastening piece, crankshaft, gears etc.