YAG 250RL
X2 NiCoMo18-9-5+Ti
Fe reste Ni17-19 Co8-10 Mo4.5-5.5 Ti0.5-0.8 C0-0.03
Chemical composition |
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Ni17-19
P0.01 max
FeBAL
Mn0.1 max
Si0.1 max
S0.01 max
Co8-10
Al0.05-0.15
C0.03 max
Ti0.5-0.8
Mo4.5-5.5
Alloy name | |
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RLSA no. | 973 |
EN standard | |
DIN standard | 1.6358 |
UNS no.* |
*Unified Numbering System (USA)
Characteristics and main uses
- Alloy developed specifically for the needs of the watch industry "low Ni 3 Ti"
- Superior formability, elevated mechanical properties by precipitation hardening through heat treatment at moderate temperature (which can be carried out after forming).
- Hardening treatment does not cause any dimensional change.
- No low-temperature embrittlement.
- Excellent fatigue-resistance.
- Structural stability after ageing.
- A low thermoelastic coefficient.
- Excellent weldability. Post-weld hardening treatment enables significant reduction of differences in properties between welded and non-welded zones, thus eliminating weak spots.
Main uses
- Springs for clock motors.
- Springs for rough watch movements.
- Form springs for analogue quartz watches.
- Springs for miscellaneous applications.
- Weighing machines.
- Precision ball bearings.
- Ball bearing cages.
- Electrical and electronic apparatuses.
- Plastics industry.
- Defense industry.
- Missile and rocket fins.
- Satellites.
- Automatic gearbox belt.
- Printer type-carrying band.