3J40 Vibration-proof Wear-resistance Axle-centre Superelastic Alloy
3J40 is a kind of high hardness and high strength non magnetic
corrosion resistant high elastic alloy.
3J40 is a precipitation hardening nickel-based alloy. It has good
plasticity and is easy to be processed in solid solution state.
After cold working at high strain rate and aging treatment, high
mechanical and elastic properties are obtained. The alloy can also
be strengthened after solid solution by aging treatment. 3J40 is a
Ni-Cr-Al series alloy with a chromium content of 40% and excellent
corrosion resistance.
Chemical composition
| Element | C | Mn | Si | P | S | Cr | Ni | Al | Ce | Fe |
| Weight(%) | 0.03 max | 0.10 max | 0.20 max | 0.010 max | 0.010 max | 39.0~41.0 | Rem | 3.30~3.50 | 0.10~0.20 | 0.50 max |
Advantages
3J40 has high hardness, strength, elastic limit, energy storage
ratio, fatigue strength, small elastic lag and aftereffect,
non-magnetic, good wear resistance, shock resistance, excellent
corrosion resistance and other characteristics. The alloy has
excellent oxidation resistance. It has high corrosion resistance to
many kinds of mediums, such as damp heat, smoke environment, acid
and alkali.
Applications
3J40 is mainly used in bearings, shaft points used in aviation,
navigation, antiaircraft artillery and other fields.
Forms of supply
- Cold rolled strip: thickness 0.05~2.50mm
- Cold drawn wire: diameter 0.10~6.0mm
Heat treatment
For Axle-centre, 80%~90% cold work+500~550°C, keep for 5h, air cool
For others, 1180~1220°C, keep for 15min, water quench+ 500~550°C,
keep for 5h, air cool
