Loading Port:Shanghai
Payment Terms:TT OR LC
Min Order Qty:10000 m
Supply Capability:1000000 m/month
Description:
It is very good material for manufacturing watch and clock, timer and other elastic elements.
Please feel free to send us a inquiry and we are looking forward to cooperating with you!
Before you send us a inquiry, please confirm the following information
1. Alloy grade
2. Dimensions of the alloys
3. Surface requirements
4. Size tolerance requirement
5. Quantities
6. Package request
7. Specific end use
8. Other information that may be useful in supplying the most suitable products
| Grade | Chemical Composition(%) | ||||||||
| C | Mn | Si | P | S | Cr | Ni | Mo | Fe | |
| ≤ | |||||||||
| 3J9 | 0.22~ 0.26 | 1.80~ 2.20 | 1.30~ 1.70 | 0.030 | 0.020 | 19.0~ 20.5 | 9.0~ 10.5 | 1.60~ l.85 | balance |
Mechanical Property
| Alloy delivery state | Diameter/mm | Tensile Strength ób/MPa | Elongation δ10(%) |
| Cold draw wire | O.40~0.70 | ≥2058 | |
| >0.70~1.80 | ≥1666 | ||
| >1.80~3.50 | ≥1470 | ||
| >3.50~6.00 | ≥1274 | ||
| Soft hot rolled wire | 8.00~12.00 | ≤835 | >40 |
physical properties
Average linear expansion coefficient in different temperature range
| Alloy state | Average linear expansion coefficient /(106/K) | |||||
| -40~20ºC | 20~50ºC | 20~100ºC | 20~200ºC | 20~300ºC | 20~400ºC | |
| solution treatment | 16.4~17.6 | 15.4~16.O | 16.0~16.4 | 16.3~16.7 | 16.8~17.2 | 17.3~17.7 |
| solution treatment+aging | 17.1~18.1 | 16.5~18.2 | 16.0~16.2 | 16.3~16.5 | 16.7~16.9 | 17.2~17.3 |
| Cold draw | 18.0 | 14.6~15.6 | 15.9~16.4 | 16.7~16.8 | 16.8~17.2 | 17.2~17.4 |
| Cold draw+aging | 17.8~18.1 | 15.5~15.9 | 15.9~16.1 | 16.3~16.5 | 16.6~16.9 | 17.2~17.4 |
Elasticity modulus and frequency temperature coefficient
| Alloy state | elasticity modulusE/MPa | shear modulus G/MPa | frequency temperature coefficient βf/(106/ºC)30~50ºC | Q20ºC |
| solution treatment | 186500~196000 | 72500~74500 | -190~-210 | 17000~19000 |
| solution treatment+aging | 186500~196000 | 73500~74500 | -190~-210 | 15000~18000 |
| Cold draw | 166500~176500 | 68500~71500 | -200~-240 | 5000~6000 |
| Cold draw+aging | 181500~196000 | 73500~75500 | -190~-210 | 14000~17000 |
The magnetic permeability and resistivity of the alloy 3J9
| Alloy state | magnetic permeabilityμ/(mH/m) | Resistivity ρ/(μΩ@m) | |
| H=40000A/m | H=80000A/m | ||
| solution treatment | 0.0012589~0.0012595 | O.0012589~O.0012595 | _ |
| solution treatment+550ºC×4h | 0.0012594~O.0012596 | O.0012594~O.0012596 | _ |
| solution treatment+≥43%deformation rate | O.0012602~O.0012624 | O.0012602~0.0012624 | 0.87~O.88 |
| solution treatment+≥43%deformation rate+480ºC×3h | O.0012615 | O.0012614 | 0.84~O.86 |
The vickers hardness of the alloy
| deformation rate(%) HV Alloy state | 0 | 27 | 43 | 62 | 82 | 95 |
| Cold state | 270~300 | 340~360 | 380~400 | 420~450 | 470~500 | 5l0~540 |
| Cold state+480ºC×3h | 230~260 | 390~420 | 440~480 | 5lO~550 | 570~590 | 600~620 |
