ASTM 4340/DIN 36CrNiMo4/JISSNCM439
ASTM 4340/DIN 36CrNiMo4/JISSNCM439
- Chemical composition (approx.):C 0.38-0.43, Mn 0.60-0.80, P ≤0.035, S ≤0.040, Si 0.15-0.35, Ni 1.65-2.00, Cr 0.70-0.90, Mo 0.20-0.30.
- Mechanical properties:ASTM 4340 (quenched and tempered) Tensile strength 1030-1450 MPa, yield strength 895-1310 MPa, elongation ≥12%, hardness 269-341 HBW.
- Process selection: hot rolling, cold rolling, cold drawing
- Dimension specification range: outer diameter 20-325 mm, wall thickness 2-40 mm
- Length: 3-18 meters
- Accuracy: ±0.1, and accuracy parameters can be customized according to the material and specific requirements.
- Application fields:ASTM 4340 is used for manufacturing high-strength parts such as aircraft landing gears, shafts, gears, and bolts.
English 
Korean