Alloy steel 4340 (439/1.6511/40CrNiMo)
1.High strength/toughness
2.high hardenability
3.good impact capacity
4.large stocks
Detailed Product Description
Alloy Steel AISI 4340 /DIN 1.6511/JIS SNCM439/GB 40CrNiMo
Alloy tool steel 4340, 42CrNiMoA, , large stockist with competitive price.
Steel Grade: Alloy tool steel 4340, 42CrNiMoA
Characteristic: High strength,High tenacity,good hardenability,and high resistance to thermal properties.
Delivery Hardness: Pre-hardened HB270-300
Chemical Analysis in %
| C | Si | Mn | Cr | Mo | V | Others |
| 0.4 | 0.27 | 0.65 | 0.75 | 0.2 | Ni 1.45 |
Application:
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. with diameter is biger than 250mm.
